CN116054521A - A Rotary Drive and Contactless Power Supply System Based on Single Excitation Coil - Google Patents

Abstract

The invention discloses a rotary driving and non-contact power supply system based on a single exciting coil, which is characterized in that three-phase square wave driving voltage is loaded on a stator exciting coil winding part through a three-phase inverter circuit module, electromagnetic torque generated by the stator exciting coil winding part is loaded on a rotor permanent magnet part, a rotor rotary platform part, a three-phase rectifying circuit module, a rotor power receiving coil winding part and the rotor permanent magnet part do rotary motion, meanwhile, the size of a magnetic linkage in the rotor power receiving coil winding part is periodically changed to generate three-phase induction electromotive voltage, and the three-phase rectifying circuit module rectifies and converts the three-phase induction electromotive voltage and then outputs direct current voltage; the rotary power supply device has the advantages that the rotary driving and non-contact rotary power supply functions can be realized at the same time, so that the number of functional modules in the rotary working condition equipment can be reduced, the volume of the rotary working condition equipment is reduced, the maintenance cost of the rotary working condition equipment is reduced, and the miniaturization and the low cost of the rotary working condition equipment are promoted.

Description

A Rotary Drive and Contactless Power Supply System Based on Single Excitation Coil

technical field

The invention relates to a power supply system, in particular to a rotary drive and non-contact power supply system based on a single excitation coil.

Background technique

In rotating working equipment such as lidar, smart drills, and visual imaging, some components need to work in a state of rotating motion. Therefore, on the one hand, it is necessary to provide rotational driving torque for these components to make them rotate, and on the other hand, it is also necessary to supply electric energy to the electronic devices in these components. For the requirement of rotary drive, the motor can be installed on the stationary base, and through the cooperation of the motor shaft and the pulley or other transmission mechanism, the rotary drive torque output by the motor can be transmitted to a specific part (that is, the rotating part), and finally drive the part rotate. For the requirement of rotating power supply, since the main power supply is usually installed on the stationary part, it is impossible to supply power to the powered equipment on the rotating part through direct connection of power cables. Usually, a conductive slip ring mechanism or a rotating coupling transformer is used to realize rotating power supply . The power supply scheme of the conductive slip ring mechanism belongs to the contact power supply technology. This scheme uses the sliding contact between the brush and the conductive slip ring for power transmission. The power transmission capacity and efficiency are high, but the mutual friction between the brush and the conductive slip ring is easy to generate sparks , dust, wear and other adverse conditions; the rotary coupling transformer solution belongs to the non-contact power supply technology. This solution uses the magnetic coupling between the primary side coil and the secondary side coil of the transformer to realize power transmission, which can solve the above-mentioned defects of the contact power supply technology.

Rotary drive and rotary power supply are used in many occasions. For example, the Chinese patent with the application number CN201910782720.0 discloses a rotary drive device and a rotating imaging device for LED light strips. The rotating imaging device for LED light strips uses an independent motor to drive the rotation of the LED light strips to present different visual effects. At the same time, the transmitting coil and the receiving coil are respectively installed on the stator platform and the rotor platform to realize non-contact power transmission, so as to supply power to the LED light strip in the state of rotating motion. Another example is the Chinese patent application number CN202110039571.6 which discloses an intelligent counter-attack system for light weapons. The system uses an independent rotating motor to drive the rotation of the laser emitting device, and at the same time uses an independent rotating power supply unit to rotate the laser emitting device. Power supply, so as to realize laser pointer in 360-degree range. Another example is a Chinese patent with the application number CN202110810362.7 disclosing a narrow-window coaxial single-line laser scanning rangefinder. The narrow-window coaxial single-line laser scanning rangefinder uses an independent motor to drive the distance measuring laser module to rotate. In this way, the 360-degree single-line laser scanning rangefinder is realized; at the same time, the narrow-window coaxial single-line laser scanning rangefinder is designed with an independent wireless power supply transmitting/receiving module, wherein the wireless power supply transmitting module is installed on a stationary base, and the wireless power supply receiving module The module rotates together with the ranging laser module, and transmits wireless energy through the magnetic coupling between the transmitting coil of the wireless power supply transmitting module and the receiving coil of the wireless power supply receiving module, thereby supplying power to the ranging laser module.

It can be seen that, at present, this kind of rotating working equipment mostly adopts the design scheme of separating the functions of rotating drive and rotating power supply, that is, a set of independent power devices (such as adding a motor, etc.) are used to realize the rotating drive. At the same time, another set of independent power supply device (such as conductive slip ring, rotary coupling transformer, etc.) is used to realize the rotating power supply. Although this scheme of separating the functions of the two can achieve the expected goal, it also leads to problems such as an increase in the number of functional modules in the rotating equipment, an increase in the size of the equipment, and an increase in maintenance costs. Miniaturization and cost reduction.

Contents of the invention

The technical problem to be solved by the present invention is to provide a rotary drive and non-contact power supply system based on a single excitation coil. The system can realize the function of rotating drive and non-contact rotating power supply at the same time, thereby reducing the number of functional modules in the rotating working equipment, reducing its volume, reducing its maintenance cost, and promoting the miniaturization and cost reduction of the rotating working equipment.

The technical solution adopted by the present invention to solve the above technical problems is: a rotary drive and non-contact power supply system based on a single excitation coil, including a stator base platform component, a three-phase inverter circuit module, a rotor permanent magnet component, and a stator excitation coil Winding components, rotor power receiving coil winding components, three-phase rectifier circuit module, rotor rotating platform components and rotor shaft, the rotor rotating platform components are located above the stator base platform components, and the stator excitation coil winding components , the rotor permanent magnet components and the three-phase inverter circuit modules are arranged at intervals from top to bottom, and the stator excitation coil winding components and the three-phase inverter circuit modules are fixed on the The stator base platform part, the rotor power receiving coil winding part is fixed on the rotor rotating platform part, the rotor power receiving coil winding part is located above the stator excitation coil winding part, the The three-phase rectification circuit module is located above the rotor power receiving coil winding part, and is fixed on the rotor rotating platform part, and the rotor shaft passes through the rotor rotating platform part sequentially from top to bottom, The three-phase rectification circuit module, the rotor receiving coil winding part, the stator excitation coil winding part, the rotor permanent magnet part, the three-phase inverter circuit module and the stator The base platform part, the rotor rotating shaft is fixedly connected to the rotor rotating platform part, the rotor receiving coil winding part and the rotor permanent magnet part, and the rotor rotating shaft is connected to the The stator base platform components are rotationally connected, the three-phase inverter circuit module is electrically connected to the stator excitation coil winding components through cables, and the three-phase rectifier circuit module is connected to the rotor by Electric coil winding components are electrically connected through cables; when the rotary drive and the non-contact power supply system are working, the three-phase inverter circuit module is connected to the external DC power supply, and the output of the external DC power supply is connected to the The DC power supply voltage is converted into a three-phase square wave driving voltage and loaded on the stator excitation coil winding part, and the stator excitation coil winding part generates an alternating rotating magnetic field to act on the rotor permanent magnet part, and the The permanent magnet magnetic fields generated by the rotor permanent magnet parts interact, thereby generating electromagnetic torque to be loaded on the rotor permanent magnet parts, and under the driving action of the electromagnetic torque, the rotor rotating platform parts, the The three-phase rectifier circuit module, the rotor power receiving coil winding part, the rotor permanent magnet part and the rotor shaft are relative to the stator excitation coil winding part, and the three-phase inverter circuit The module rotates with the stator base platform part; at the same time, the alternating rotating magnetic field acts on the rotor power receiving coil winding part, so that the flux linkage in the rotor power receiving coil winding part Periodic changes occur to generate a three-phase induced electromotive voltage, and the three-phase rectification circuit module rectifies and transforms the three-phase induced electromotive voltage to output a DC voltage, so as to be installed on the rotor rotating platform components, Power is supplied to other powered devices that perform synchronous rotational motion with the rotor rotating platform components.

The stator excitation coil winding components include a stator support structure, a three-phase stator coil winding and six stator silicon steel sheet groups, and the stator support structure includes a first outer circumferential ring, a first inner circumferential ring and six The first connecting arm, the first inner circumferential ring is coaxially arranged in the first outer circumferential ring, and the rotor shaft passes through the first outer circumferential ring coaxially, A rotatable connection is adopted between the first outer circumferential ring and the rotor shaft, the first outer circumferential ring is fixed on the stator base platform part, and the first outer The circumferential ring and the first inner circumferential ring are connected and fixed through the six first connecting arms, and the six first connecting arms are arranged at uniform intervals along the circumference with the rotor shaft as the center, each The angle between two adjacent first connecting arms is 60 degrees, a first assembly space is formed between every adjacent two first connecting arms, and six first assembly spaces are formed between the six first connecting arms. space, the six stator silicon steel sheet groups are installed one by one in the six first assembly spaces, each of the stator silicon steel sheet groups is composed of n silicon steel sheets along the first The assembly space is radially stacked, and its radial section is isosceles trapezoidal, n is an integer greater than or equal to 2, and the upper bottom of the isosceles trapezoidal radial section of each stator silicon steel sheet group faces the The first inner circumferential ring, the lower base of the isosceles trapezoidal radial section of each of the stator silicon steel sheet groups faces the first outer circumferential ring, each of the stator silicon steel sheet groups The two waists of the isosceles trapezoidal radial section are fixed on the two left and right first connecting arms in an adhesive manner; the three-phase stator coil winding includes six stator sub-coils, and the six stator sub-coils are connected with the The six stator silicon steel sheet groups are in one-to-one correspondence, and a corresponding stator sub-coil is in a stator silicon steel sheet group, and the stator sub-coil is wound on the inner side, the left side, and the left side of the stator silicon steel sheet group. On the outer side and the right side, one end of the stator coil is drawn from the outer side of the stator silicon steel sheet group, and the other end is close to the inner side of the stator silicon steel sheet group. The winding direction of two adjacent stator coils On the contrary, that is, one is clockwise and the other is counterclockwise; the three-phase stator coil windings are respectively denoted as A-phase stator coil windings, B-phase stator coil windings and C-phase stator coil windings; any winding direction The stator sub-coil in the clockwise direction is the first stator sub-coil, starting from the first stator sub-coil, the other five sub-coils in the clockwise direction are the second stator sub-coil, the third stator sub-coil, the third 4 stator sub-coils, the 5th stator sub-coil and the 6th stator sub-coil, the first stator sub-coil and the 4th stator sub-coil constitute the A-phase stator coil winding, the first stator sub-coil is close to One end of the outer surface of the stator silicon steel sheet group is marked as the A+ of the stator excitation coil winding part, and the end of the fourth stator sub-coil close to the outer surface of the stator silicon steel sheet group is marked as the stator excitation coil winding part A-, the other end of the first stator sub-coil is connected to the other end of the fourth stator sub-coil, the second stator sub-coil and the fifth stator sub-coil constitute the C-phase stator coil winding, the second The end of the first stator sub-coil close to the outer surface of the stator silicon steel sheet group is denoted as C- of the stator excitation coil winding part, and the end of the fifth stator sub-coil close to the outer surface of the stator silicon steel sheet group is denoted as the The C+ of the stator excitation coil winding part, the other end of the second stator sub-coil is connected to the other end of the fifth stator sub-coil, the third stator sub-coil and the sixth stator sub-coil constitute the B-phase stator Coil winding, the end of the third stator sub-coil close to the outer surface of the stator silicon steel sheet group is marked as B+ of the stator excitation coil winding part, and the end of the sixth stator sub-coil close to the outer surface of the stator silicon steel sheet group Denoted as B- of the stator excitation coil winding part, the other end of the third stator sub-coil is connected to the other end of the sixth stator sub-coil, A- of the stator excitation coil winding part, the The B- of the stator excitation coil winding part is connected to the C- of the stator excitation coil winding part; the three-phase inverter circuit module is connected to the A+, B+ and C+ of the stator excitation coil winding The three-phase stator coil winding is loaded with a three-phase square wave driving voltage, and the six-step commutation-two-two conduction method is used to control the power supply of the three-phase stator coil winding. The first step is the A-phase stator coil winding and the B-phase stator coil. Winding energization: the A+ of the stator excitation coil winding part applies a positive voltage, the B+ of the stator excitation coil winding part is grounded, and the C+ of the stator excitation coil winding part is suspended; the second step is the A phase stator coil winding , C-phase stator coil winding electrification: the A+ of the stator excitation coil winding part is applied with a positive voltage, the B+ of the stator excitation coil winding part is suspended, and the C+ of the stator excitation coil winding part is grounded; the third step is The B-phase stator coil winding and the C-phase stator coil winding are energized: the A+ of the stator excitation coil winding part is suspended, the B+ of the stator excitation coil winding part is positively voltaged, and the C+ of the stator excitation coil winding part is grounded The 4th step is B phase stator coil winding, A phase stator coil winding energization: the A+ of described stator excitation coil winding part is grounded, the B+ of described stator excitation coil winding part applies positive voltage, and described stator excitation coil The C+ of the winding part is suspended; the fifth step is to energize the C-phase stator coil winding and the A-phase stator coil winding: the A+ of the stator excitation coil winding part is grounded, the B+ of the stator excitation coil winding part is suspended, and the Apply a positive voltage to C+ of the stator field coil winding part; the 6th step is to energize the C-phase stator coil winding and the B-phase stator coil winding: the A+ of the stator field coil winding part is suspended, and the B+ of the stator field coil winding part Grounded, the C+ of the stator excitation coil winding part applies a positive voltage; under the energization control, the stator excitation coil winding part generates a clockwise alternating rotating magnetic field, and the alternating rotating magnetic field is the The permanent magnet part of the rotor provides electromagnetic torque, and at the same time provides non-contact power supply for the rotor power receiving coil winding part.

The rotor power receiving coil winding components include a rotor coil support structure, a three-phase rotor coil winding and six groups of rotor silicon steel sheets, and the rotor coil support structure includes a second outer circumferential ring, a second inner circumferential ring With the six second connecting arms, the second inner circumferential ring is coaxially arranged in the second outer circumferential ring, and the rotor shaft is coaxial from the second outer circumferential ring Through, the second outer circumferential ring is fixedly connected with the rotor shaft, the second outer circumferential ring is fixed on the rotor rotating platform part, and the second outer circumferential ring It is connected and fixed with the second inner circumferential ring through the six second connecting arms, and the six second connecting arms are evenly spaced along the circumference with the rotor shaft as the center, and every two adjacent The angle between the two second connecting arms is 60 degrees, a second assembly space is formed between every two adjacent second connecting arms, and six second assembly spaces are formed between the six second connecting arms, so The six rotor silicon steel sheet groups are installed in the six second assembly spaces one by one, and each of the rotor silicon steel sheet groups is composed of m silicon steel sheets along the second assembly space where it is located. It is stacked radially, and its radial section is isosceles trapezoidal, m is an integer greater than or equal to 2, and the upper base of the isosceles trapezoidal radial section of each rotor silicon steel sheet group faces the second Inner peripheral ring, the lower bottom of the isosceles trapezoidal radial section of each rotor silicon steel sheet group faces the second outer peripheral ring, and the isosceles trapezoidal radial section of each rotor silicon steel sheet group is The two waists of the radial section are glued to the left and right second connecting arms; the three-phase rotor coil winding includes six rotor sub-coils, and the six rotor sub-coils are connected to the The six rotor silicon steel sheet groups correspond one-to-one, and a corresponding rotor sub-coil is in a rotor silicon steel sheet group, and the rotor sub-coil is wound on the inner side, left side, outer side and On the right side, one end of the rotor sub-coil is drawn from the outer surface of the rotor silicon steel sheet group, and the other end is close to the inner surface of the rotor silicon steel sheet group, and the winding directions of two adjacent rotor sub-coils are opposite, that is, One is clockwise, and the other is counterclockwise; the three-phase rotor coil windings are respectively recorded as A-phase rotor coil winding, B-phase rotor coil winding and C-phase rotor coil winding; any winding direction is clockwise The rotor sub-coil in the direction is the first rotor sub-coil, starting from the first rotor sub-coil, the other five sub-coils in the clockwise direction are the second rotor sub-coil, the third rotor sub-coil, and the fourth rotor The sub-coil, the fifth rotor sub-coil and the sixth rotor sub-coil, the first rotor sub-coil and the fourth rotor sub-coil constitute the A-phase rotor coil winding, and the first rotor sub-coil is close to the rotor silicon steel sheet One end of the outer surface of the group is marked as A+ of the rotor power receiving coil winding part, and the end of the fourth rotor sub-coil close to the outer side of the rotor silicon steel sheet group is marked as the rotor power receiving coil winding part. A-, the other end of the first rotor sub-coil is connected to the other end of the fourth rotor sub-coil, the second rotor sub-coil and the fifth rotor sub-coil constitute the C-phase rotor coil winding, the second The end of the rotor sub-coil close to the outer surface of the rotor silicon steel sheet group is marked as the C- of the rotor receiving coil winding part, and the end of the fifth rotor sub-coil close to the outer surface of the rotor silicon steel sheet group is marked as the The other end of the second rotor sub-coil is connected to the other end of the fifth rotor sub-coil, and the third rotor sub-coil and the sixth rotor sub-coil constitute the B-phase Rotor coil winding, the end of the third rotor sub-coil close to the outer surface of the rotor silicon steel sheet group is marked as B+ of the rotor power receiving coil winding part, the sixth rotor sub-coil is close to the outer surface of the rotor silicon steel sheet group One end of the rotor is marked as B- of the rotor power receiving coil winding part, the other end of the third rotor sub-coil is connected to the other end of the sixth rotor sub-coil, and the A- of the rotor power receiving coil winding part , B- of the rotor power receiving coil winding part is connected with C- of the rotor power receiving coil winding part; the rotor power receiving coil winding part rotates with the rotor shaft, and the The alternating rotating magnetic field generated by the stator excitation coil winding components causes the magnetic induction line to cut due to relative motion, thereby generating an induced electromotive force on the three-phase rotor coil winding, and the induced electromotive force is input to the three-phase rectifier The circuit module outputs a DC voltage after rectification, which is used to supply power to the power receiving equipment on the rotor rotating platform component.

The rotor permanent magnet component includes a rotor permanent magnet support structure and six permanent magnets, and the rotor permanent magnet support structure includes a third outer circumferential ring, a third inner circumferential ring and six third connecting arms, so The third inner circumferential ring is coaxially arranged in the third outer circumferential ring, the rotor shaft passes through the third outer circumferential ring coaxially, and the third outer circumferential ring The circumferential ring is fixedly connected to the rotor shaft, the third outer circumferential ring is connected and fixed to the third inner circumferential ring through the six third connecting arms, and the six sixth The three connecting arms are evenly spaced along the circumference with the rotor shaft as the center, the angle between every two adjacent third connecting arms is 60 degrees, and a third assembly space is formed between every two adjacent third connecting arms , six third assembly spaces are formed between the six third connecting arms, and the six permanent magnets are installed in the six third assembly spaces one by one, each of the permanent magnets All adopt axial magnetization, and their radial sections are all isosceles trapezoidal, and the upper bottom of the isosceles trapezoidal radial section of each of the permanent magnets faces the third inner circumferential ring, and each of the The lower bottom of the isosceles trapezoidal radial section of the permanent magnet faces the third outer circumferential ring, and the two waists of the isosceles trapezoidal radial section of each permanent magnet are fixed on the left and right sides of the isosceles trapezoidal radial section of each permanent magnet. On the third connecting arm; the magnetic poles of the two adjacent permanent magnets facing the same axial direction are opposite, that is, viewed in the clockwise direction, the magnetic poles of the six permanent magnets facing the same axial direction are respectively N pole, S pole, N pole, S pole, N pole, S pole; the alternating rotating magnetic field generated by the stator excitation coil winding components interacts with the permanent magnet magnetic field generated by the rotor permanent magnet components, thereby generating electromagnetic rotation Torque acts on the rotor permanent magnet part, driven by the electromagnetic torque, the rotor rotating platform part, the three-phase rectification circuit module, the rotor receiving coil winding part, the The permanent magnet part of the rotor and the rotating shaft of the rotor undergo rotational motion.

The rotor shaft is installed on the stator base platform part through the first bearing, the inner ring of the first bearing is in contact with the rotor shaft, and the outer ring of the first bearing is in contact with the The above-mentioned stator base platform components are in contact with each other, the rotor permanent magnet components and the rotor shaft are axially fixed through keyway fit, and the stator excitation coil winding components are fixed on the On the stator base platform part, a second bearing is arranged between the stator excitation coil winding part and the rotor shaft, the inner ring of the second bearing is in contact with the rotor shaft, and the The outer ring of the second bearing is in contact with the stator excitation coil winding part, the rotor rotating platform part and the rotor shaft are axially fixed by means of key grooves, and the rotor power receiving coil winding part A plurality of bolts are used for axial fixing with the rotor rotating platform part.

Compared with the prior art, the present invention has the advantage that the stator base platform component, the three-phase inverter circuit module, the rotor permanent magnet component, the stator excitation coil winding component, the rotor receiving coil winding component, the three-phase rectification circuit module, The rotor rotating platform components and the rotor shaft constitute a rotary drive and non-contact power supply system based on a single excitation coil. When working, the three-phase inverter circuit module is connected to the external DC power supply, and the DC power supply voltage at the output of the external DC power supply is connected to it. Inverted into a three-phase square wave drive voltage and loaded on the stator excitation coil winding components, the stator excitation coil winding components generate an alternating rotating magnetic field that acts on the rotor permanent magnet components and interacts with the permanent magnet magnetic field generated by the rotor permanent magnet components, thereby The generated electromagnetic torque is loaded on the permanent magnet part of the rotor. Under the driving action of the electromagnetic torque, the rotor rotating platform part, the three-phase rectification circuit module, the winding part of the rotor receiving coil, the permanent magnet part of the rotor and the rotor shaft relative to the stator excitation coil The winding components, the three-phase inverter circuit module and the stator base platform components rotate; at the same time, the alternating rotating magnetic field acts on the winding components of the rotor power receiving coil, causing periodic changes in the flux linkage in the rotor power receiving coil winding components Thus, the three-phase induced electromotive voltage is generated, and the three-phase rectification circuit module rectifies and transforms the three-phase induced electromotive voltage to output a DC voltage, so as to be installed on the rotor rotating platform components and perform synchronous rotation with the rotor rotating platform components. The equipment is powered, so the present invention can simultaneously realize the function of rotating drive and non-contact rotating power supply, thereby reducing the number of functional modules in the rotating working equipment, reducing its volume, reducing its maintenance cost, and promoting the miniaturization of the rotating working equipment and lower costs.

Description of drawings

1 is a schematic diagram of the overall structure of the rotary drive and non-contact power supply system based on a single excitation coil of the present invention;

Fig. 2 is a schematic structural view of the stator excitation coil winding components of the rotary drive and contactless power supply system based on a single excitation coil of the present invention;

3 is a schematic diagram of the structure and connection of the A-phase stator coil winding and its stator silicon steel sheet group in the stator excitation coil winding components of the single excitation coil-based rotary drive and non-contact power supply system of the present invention;

Fig. 4 is a schematic structural view of the rotor permanent magnet component of the rotary drive and non-contact power supply system based on a single excitation coil of the present invention.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

Embodiment: As shown in Figure 1, a rotary drive and non-contact power supply system based on a single excitation coil, including a stator base platform component A1, a three-phase inverter circuit module A2, a rotor permanent magnet component A3, and a stator excitation coil winding component A4, rotor power receiving coil winding part A5, three-phase rectification circuit module A6, rotor rotating platform part A7 and rotor shaft A8, rotor rotating platform part A7 is located above the stator base platform part A1, stator excitation coil winding part A4, rotor permanent The magnet part A3 and the three-phase inverter circuit module A2 are arranged at intervals from top to bottom, the stator excitation coil winding part A4 and the three-phase inverter circuit module A2 are fixed on the stator base platform part A1, and the rotor receiving coil winding Part A5 is fixed on the rotor rotating platform part A7, the rotor power receiving coil winding part A5 is located above the stator excitation coil winding part A4, the three-phase rectification circuit module A6 is located above the rotor power receiving coil winding part A5, and is fixed on the rotor rotating platform part On A7, the rotor shaft A8 passes through the rotor rotating platform part A7, the three-phase rectification circuit module A6, the rotor power receiving coil winding part A5, the stator excitation coil winding part A4, the rotor permanent magnet part A3, and the three-phase inverter from top to bottom. The variable circuit module A2 and the stator base platform part A1, the rotor shaft A8 and the rotor rotation platform part A7, the rotor receiving coil winding part A5 and the rotor permanent magnet part A3 are all fixedly connected, and the rotor shaft A8 is connected to the stator base platform part A1 is rotationally connected, the three-phase inverter circuit module A2 is electrically connected with the stator excitation coil winding part A4 through a cable, and the three-phase rectification circuit module A6 is electrically connected with the rotor receiving coil winding part A5 through a cable; when rotating When the drive works with the non-contact power supply system, the three-phase inverter circuit module A2 is connected to the external DC power supply, and inverts the DC power supply voltage from the output of the external DC power supply to it into a three-phase square wave driving voltage and loads it on the stator excitation coil winding components On A4, the stator excitation coil winding part A4 generates an alternating rotating magnetic field to act on the rotor permanent magnet part A3, and interacts with the permanent magnet magnetic field generated by the rotor permanent magnet part A3, thereby generating electromagnetic torque and loading it on the rotor permanent magnet part A3 Above, under the driving action of electromagnetic torque, the rotor rotating platform part A7, the three-phase rectification circuit module A6, the rotor power receiving coil winding part A5, the rotor permanent magnet part A3 and the rotor shaft A8 are relative to the stator excitation coil winding part A4, three The phase inverter circuit module A2 and the stator base platform part A1 perform rotational movement; at the same time, the alternating rotating magnetic field acts on the rotor power receiving coil winding part A5, causing the flux linkage in the rotor power receiving coil winding part A5 to change periodically Thereby, the three-phase induced electromotive voltage is generated, and the three-phase rectification circuit module A6 rectifies and transforms the three-phase induced electromotive voltage to output a DC voltage, so as to be installed on the rotor rotating platform part A7 and perform synchronous rotating motion with the rotor rotating platform part A7 other powered devices.

Embodiment 2: This embodiment is basically the same as Embodiment 1, the only difference is that in this embodiment, as shown in Figure 2 and Figure 3, the stator excitation coil winding part A4 includes a stator support structure, a three-phase stator coil winding and six A stator silicon steel sheet group Y4-1, Y4-2, Y4-3, Y4-4, Y4-5 and Y4-6, the stator support structure includes a first outer circumferential ring Y1, a first inner circumferential ring Y3 and Six first connecting arms Y2-1, Y2-2, Y2-3, Y2-4, Y2-5 and Y2-6, the first inner circumferential ring Y3 is coaxially arranged in the first outer circumferential ring Y1, The rotor shaft A8 passes coaxially through the first outer circumferential ring Y1, the first outer circumferential ring Y1 and the rotor shaft A8 are rotatably connected, and the first outer circumferential ring Y1 is fixed on the stator base platform part On A1, the first outer circumferential ring Y1 and the first inner circumferential ring Y3 are connected and fixed through six first connecting arms Y2-1, Y2-2, Y2-3, Y2-4, Y2-5 and Y2-6 , the six first connecting arms are evenly spaced along the circumference with the rotor shaft A8 as the center, the angle between every two adjacent first connecting arms is 60 degrees, and a first connecting arm is formed between every two adjacent first connecting arms Assembly space, six first assembly spaces are formed between the six first connecting arms, six stator silicon steel sheet groups are installed in the six first assembly spaces one by one, and each stator silicon steel sheet group consists of n Silicon steel sheets are stacked along the radial direction of the first assembly space where they are located, and their radial section is isosceles trapezoidal, n is an integer greater than or equal to 2, and the isosceles trapezoidal radial section of each stator silicon steel sheet group is The upper bottom faces the first inner circumferential ring Y3, the lower bottom of the isosceles trapezoidal radial section of each stator silicon steel sheet group faces the first outer circumferential ring Y1, and the isosceles trapezoidal radial section of each stator silicon steel sheet group The two waists of the section are fixed on the two left and right first connecting arms by glue; the three-phase stator coil winding includes six stator sub-coils, and the six stator sub-coils correspond to the six stator silicon steel sheet groups one by one. Correspondingly, in a stator sub-coil and a stator silicon steel sheet group, the stator sub-coil is wound on the inner side, left side, outer side and right side of the stator silicon steel sheet group, one end of the stator sub-coil Lead out from the outer surface of the stator silicon steel sheet group, and the other end is close to the inner surface of the stator silicon steel sheet group. The winding directions of the two adjacent stator coils are opposite, that is, one is clockwise and the other is counterclockwise. direction; the three-phase stator coil windings are respectively recorded as A-phase stator coil winding, B-phase stator coil winding and C-phase stator coil winding; any stator coil whose winding direction is clockwise is taken as the first stator coil, from Starting from the first stator sub-coil, the other five sub-coils in the clockwise direction are the second stator sub-coil, the third stator sub-coil, the fourth stator sub-coil, the fifth stator sub-coil and the sixth stator The sub-coils, the first stator sub-coil and the fourth stator sub-coil constitute the A-phase stator coil winding, and the end of the first stator sub-coil close to the outer side of the stator silicon steel sheet group is marked as A+ of the stator excitation coil winding part A4 The end of the fourth stator sub-coil close to the outer surface of the stator silicon steel sheet group is marked as A- of the stator excitation coil winding part A4, and the other end of the first stator sub-coil is connected to the other end of the fourth stator sub-coil , the second stator sub-coil and the fifth stator sub-coil constitute the C-phase stator coil winding, and the end of the second stator sub-coil close to the outer surface of the stator silicon steel sheet group is denoted as C- of the stator excitation coil winding part A4, The end of the fifth stator sub-coil close to the outer surface of the stator silicon steel sheet group is marked as C+ of the stator excitation coil winding part A4, and the other end of the second stator sub-coil is connected to the other end of the fifth stator sub-coil. The 3 stator sub-coils and the 6th stator sub-coil constitute the B-phase stator coil winding, and the end of the third stator sub-coil close to the outer side of the stator silicon steel sheet group is marked as B+ of the stator excitation coil winding part A4, the 6th The end of the stator sub-coil close to the outer surface of the stator silicon steel sheet group is marked as B- of the stator excitation coil winding part A4, the other end of the third stator sub-coil is connected to the other end of the sixth stator sub-coil, and the stator excitation coil A- of winding part A4, B- of stator exciting coil winding part A4 and C- of stator exciting coil winding part A4 are connected; three-phase inverter circuit module A2 connects three phases through A+, B+ and C+ of stator exciting coil winding part A4 The three-phase stator coil winding is loaded with three-phase square wave driving voltage, and the three-phase stator coil winding is controlled by six-step commutation-two-two conduction. The first step is to energize the A-phase stator coil winding and the B-phase stator coil winding: the stator Positive voltage is applied to A+ of the field coil winding part A4, B+ of the stator field coil winding part A4 is grounded, and C+ of the stator field coil winding part A4 is suspended; the second step is to energize the A-phase stator coil winding and the C-phase stator coil winding: stator excitation Positive voltage is applied to A+ of the coil winding part A4, B+ of the stator excitation coil winding part A4 is suspended, and C+ of the stator excitation coil winding part A4 is grounded; the third step is to energize the B-phase stator coil winding and the C-phase stator coil winding: the stator excitation coil The A+ of the winding part A4 is suspended, the B+ of the stator excitation coil winding part A4 applies a positive voltage, and the C+ of the stator excitation coil winding part A4 is grounded; the fourth step is to energize the B-phase stator coil winding and the A-phase stator coil winding: the stator excitation coil winding A+ of component A4 is grounded, positive voltage is applied to B+ of stator field coil winding part A4, and C+ of stator field coil winding part A4 is suspended; the fifth step is to energize phase C stator coil winding and phase A stator coil winding: stator field coil winding part The A+ of A4 is grounded, the B+ of the stator excitation coil winding part A4 is suspended, and the C+ of the stator excitation coil winding part A4 applies a positive voltage; the sixth step is to electrify the C-phase stator coil winding and the B-phase stator coil winding: the stator excitation coil winding part A4 The A+ of the stator excitation coil winding part A4 is suspended, the B+ of the stator excitation coil winding part A4 is grounded, and the C+ of the stator excitation coil winding part A4 applies a positive voltage; The rotating magnetic field provides electromagnetic torque for the rotor permanent magnet part A3, and at the same time provides non-contact power supply for the rotor power receiving coil winding part A5.

Embodiment 3: This embodiment is basically the same as Embodiment 2, the only difference is that in this embodiment, the rotor receiving coil winding part A5 includes a rotor coil support structure, a three-phase rotor coil winding and six rotor silicon steel sheet groups, The rotor coil support structure includes a second outer circumferential ring, a second inner circumferential ring and six second connecting arms, the second inner circumferential ring is coaxially arranged in the second outer circumferential ring, and the rotor shaft A8 is connected from the second Coaxially passing through the outer circumferential ring, the second outer circumferential ring is fixedly connected to the rotor shaft A8, the second outer circumferential ring is fixed on the rotor rotating platform part A7, the second outer circumferential ring is connected to the second inner circumferential ring The ring is connected and fixed by six second connecting arms. The six second connecting arms are evenly spaced along the circumference with the rotor axis A8 as the center. The angle between every two adjacent second connecting arms is 60 degrees. A second assembly space is formed between the second connecting arms, and six second assembly spaces are formed between the six second connecting arms, and the six rotor silicon steel sheet groups are installed in the six second assembly spaces one by one. Each group of rotor silicon steel sheets is formed by stacking m silicon steel sheets along the radial direction of the second assembly space, and its radial section is isosceles trapezoidal, m is an integer greater than or equal to 2, and each rotor silicon steel sheet The upper base of the isosceles trapezoidal radial section of the group faces the second inner circumferential ring, the lower base of the isosceles trapezoidal radial section of each rotor silicon steel sheet group faces the second outer circumferential ring, and each rotor silicon steel sheet The two waists of the isosceles trapezoidal radial section of the group are glued to the left and right second connecting arms; the three-phase rotor coil winding includes six rotor sub-coils, six rotor sub-coils and six rotor sub-coils. There is a one-to-one correspondence between the silicon steel sheet groups, and the corresponding rotor sub-coil is in a rotor silicon steel sheet group, and the rotor sub-coil is wound on the inner side, left side, outer side and right side of the rotor silicon steel sheet group One end of the rotor sub-coil is drawn from the outer surface of the rotor silicon steel sheet group, and the other end is close to the inner surface of the rotor silicon steel sheet group. The winding directions of the two adjacent rotor sub-coils are opposite, that is, one is in the direction clockwise, and the other is counterclockwise; the three-phase rotor coil windings are respectively recorded as A-phase rotor coil winding, B-phase rotor coil winding and C-phase rotor coil winding; any one of the rotor sub-coils whose winding direction is clockwise is taken as The first rotor sub-coil, starting from the first rotor sub-coil, the other five sub-coils in the clockwise direction are the second rotor sub-coil, the third rotor sub-coil, the fourth rotor sub-coil, the fifth The rotor sub-coil and the sixth rotor sub-coil, the first rotor sub-coil and the fourth rotor sub-coil constitute the A-phase rotor coil winding, and the end of the first rotor sub-coil close to the outer surface of the rotor silicon steel sheet group is denoted as The A+ of the rotor power receiving coil winding part A5, the end of the fourth rotor sub-coil close to the outer surface of the rotor silicon steel sheet group is marked as the A- of the rotor power receiving coil winding part A5, the other end of the first rotor sub-coil and The other end of the fourth rotor sub-coil is connected, the second rotor sub-coil and the fifth rotor sub-coil constitute the C-phase rotor coil winding, and the end of the second rotor sub-coil close to the outer surface of the rotor silicon steel sheet group is marked as The C- of the rotor power receiving coil winding part A5, the end of the fifth rotor sub-coil close to the outer surface of the rotor silicon steel sheet group is marked as the C+ of the rotor power receiving coil winding part A5, the other end of the second rotor sub-coil and The other end of the fifth rotor sub-coil is connected, the third rotor sub-coil and the sixth rotor sub-coil constitute the B-phase rotor coil winding, and the end of the third rotor sub-coil close to the outer surface of the rotor silicon steel sheet group is marked as The B+ of the rotor power receiving coil winding part A5, the end of the sixth rotor sub-coil close to the outer surface of the rotor silicon steel sheet group is marked as the B- of the rotor power receiving coil winding part A5, the other end of the third rotor sub-coil and The other end of the sixth rotor sub-coil is connected, A- of the rotor power receiving coil winding part A5, B- of the rotor power receiving coil winding part A5 and C- of the rotor power receiving coil winding part A5 are connected; the rotor power receiving coil winding part A- The component A5 rotates with the rotor shaft A8, and the alternating rotating magnetic field generated by the stator excitation coil winding component A4 causes the magnetic induction line to cut due to the relative motion, thereby generating an induced electromotive force on the three-phase rotor coil winding, and the induced electromotive force is input to the three phases. The phase rectification circuit module A6 outputs a DC voltage after rectification, which is used to supply power to the power receiving equipment on the rotor rotating platform part A7.

Embodiment 4: This embodiment is basically the same as Embodiment 1, the only difference is that in this embodiment, as shown in Figure 4, the rotor permanent magnet component A3 includes a rotor permanent magnet support structure and six permanent magnets Z4-1, Z4 -2, Z4-3, Z4-4, Z4-5, Z4-6, the rotor permanent magnet support structure includes a third outer circumferential ring Z1, a third inner circumferential ring Z3 and six third connecting arms Z2-1 . Coaxially passing through the ring Z1, the third outer circumferential ring Z1 is fixedly connected to the rotor shaft A8, the third outer circumferential ring Z1 and the third inner circumferential ring Z3 are connected to Z2-1, Z2 through six third connecting arms -2, Z2-3, Z2-4, Z2-5, Z2-6 fixed, six third connecting arms Z2-1, Z2-2, Z2-3, Z2-4, Z2-5, Z2-6 The rotor shaft A8 is arranged with the center of the circle evenly spaced along the circumference, the angle between every two adjacent third connecting arms is 60 degrees, a third assembly space is formed between every adjacent two third connecting arms, and six third connecting arms Six third assembly spaces are formed between the arms Z2-1, Z2-2, Z2-3, Z2-4, Z2-5, Z2-6, and the six permanent magnets Z4-1, Z4-2, Z4-3, Z4-4, Z4-5, and Z4-6 are installed in six third assembly spaces one by one. Each permanent magnet is magnetized in the axial direction, and its radial section is isosceles trapezoidal. The upper base of the radial section of the isosceles trapezoid faces towards the third inner circumferential ring Z3, the lower base of the radial section of the isosceles trapezoid of each permanent magnet faces the third outer circumferential ring Z1, and the diameter of the isosceles trapezoid of each permanent magnet The two waists of the cross-section are fixed on the left and right third connecting arms by glue; the magnetic poles of the two adjacent permanent magnets facing the same axis are opposite in polarity, that is, viewed in the clockwise direction, the six permanent magnets face The polarities of the magnetic poles in the same axial direction are N pole, S pole, N pole, S pole, N pole, and S pole; the alternating rotating magnetic field generated by the stator excitation coil winding part A4 and the permanent magnet magnetic field generated by the rotor permanent magnet part A3 Interaction occurs, thereby generating electromagnetic torque to act on the rotor permanent magnet part A3, driven by the electromagnetic torque, the rotor rotating platform part A7, the three-phase rectification circuit module A6, the rotor receiving coil winding part A5, the rotor permanent magnet The magnet component A3 rotates with the rotor shaft A8.

Embodiment 5: This embodiment is basically the same as Embodiment 1, the only difference is that in this embodiment, the rotor shaft A8 is installed on the stator base platform component A1 through the first bearing B1, and the inner ring of the first bearing B1 is connected to the rotor The rotating shaft A8 is in contact and fit, the outer ring of the first bearing B1 is in contact with the stator base platform part A1, the rotor permanent magnet part A3 and the rotor shaft A8 are axially fixed by means of keyway fit, and the stator excitation coil winding part A4 is passed through multiple A bolt is fixed on the stator base platform part A1, a second bearing B2 is arranged between the stator excitation coil winding part A4 and the rotor shaft A8, the inner ring of the second bearing B2 is in contact with the rotor shaft A8, and the second bearing B2 The outer ring is in contact with the stator excitation coil winding part A4, the rotor rotating platform part A7 and the rotor shaft A8 are axially fixed through the keyway fit, and the rotor power receiving coil winding part A5 and the rotor rotating platform part A7 are connected by multiple bolts B3. to fix.

Claims (5)

1. The utility model provides a rotary drive and non-contact power supply system based on single excitation coil, its characterized in that includes stator base platform part, three-phase inverter circuit module, rotor permanent magnet part, stator excitation coil winding part, rotor power reception coil winding part, three-phase rectifier circuit module, rotor rotary platform part and rotor pivot, rotor rotary platform part be located stator base platform part top, stator excitation coil winding part, rotor permanent magnet part and three-phase inverter circuit module according to from the top down sequential interval distribution, stator excitation coil winding part and three-phase inverter circuit module all fix on stator base platform part, rotor power reception coil winding part fix on rotor rotary platform part, rotor power reception coil winding part be located stator excitation coil winding part top, three-phase rectifier circuit module be located rotor power reception coil winding part top, and fix on rotor rotary platform part, rotor pivot down pass in proper order rotor rotary platform part, three-phase rectifier circuit module, rotor coil winding part and rotor coil winding part between the rotor base platform part and the stator winding part and the rotary platform part, the stator winding part are connected with the stator winding part from the top down in proper order, the stator winding part and the stator winding part is fixed on the stator winding part and the stator winding part, the three-phase inverter circuit module is electrically connected with the stator exciting coil winding part through a cable, and the three-phase rectifying circuit module is electrically connected with the rotor power receiving coil winding part through a cable; when the rotary drive and non-contact power supply system works, the three-phase inverter circuit module is connected with an external direct current power supply, the direct current power supply voltage from the output of the external direct current power supply to the output of the external direct current power supply is inverted into three-phase square wave drive voltage to be loaded on the stator exciting coil winding part, the stator exciting coil winding part generates an alternating rotary magnetic field to act on the rotor permanent magnet part and interact with the permanent magnet magnetic field generated by the rotor permanent magnet part so as to generate electromagnetic torque to load on the rotor permanent magnet part, and under the action of the electromagnetic torque drive, the rotor rotary platform part, the three-phase rectifier circuit module, the rotor power receiving coil winding part, the rotor permanent magnet part and the rotor rotating shaft do rotary motion relative to the stator exciting coil winding part, the three-phase inverter circuit module and the stator base platform part; meanwhile, the alternating rotating magnetic field acts on the rotor power receiving coil winding part to enable the flux linkage in the rotor power receiving coil winding part to be periodically changed so as to generate three-phase induced electromotive force voltage, and the three-phase rectifying circuit module rectifies and converts the three-phase induced electromotive force voltage and then outputs direct current voltage, so that power is supplied to other power receiving equipment which is arranged on the rotor rotating platform part and synchronously rotates along with the rotor rotating platform part.

2. The rotary driving and non-contact power supply system based on a single exciting coil as set forth in claim 1, wherein said stator exciting coil winding part comprises a stator supporting structure, a three-phase stator coil winding and six stator silicon steel sheet groups, said stator supporting structure comprises a first outer circumferential ring, a first inner circumferential ring and six first connecting arms, said first inner circumferential ring is coaxially disposed in said first outer circumferential ring, said rotor shaft coaxially penetrates through said first outer circumferential ring, a rotatable connection mode is adopted between said first outer circumferential ring and said rotor shaft, said first outer circumferential ring is fixed on said stator base platform part, said first outer circumferential ring and said first inner circumferential ring are fixedly connected by said six first connecting arms, the six first connecting arms are uniformly arranged at intervals along the circumference by taking the rotor rotating shaft as the center of a circle, the angle between every two adjacent first connecting arms is 60 degrees, a first assembling space is formed between every two adjacent first connecting arms, six first assembling spaces are formed between the six first connecting arms, six stator silicon steel sheet groups are correspondingly arranged in the six first assembling spaces one by one, each stator silicon steel sheet group is formed by stacking n silicon steel sheets along the radial direction of the first assembling space, the radial section of each stator silicon steel sheet group is an isosceles trapezoid, n is an integer larger than or equal to 2, the upper bottom of the isosceles trapezoid radial section of each stator silicon steel sheet group faces the first inner circumference ring, the lower bottom of the isosceles trapezoid radial section of each stator silicon steel sheet group faces the first outer circumference ring, two waists of the isosceles trapezoid radial section of each stator silicon steel sheet group are fixed on the left and right first connecting arms in an adhesive manner; the three-phase stator coil winding comprises six stator sub-coils, the six stator sub-coils are in one-to-one correspondence with the six stator silicon steel sheet groups, one stator sub-coil is wound on the inner side surface, the left side surface, the outer side surface and the right side surface of the stator silicon steel sheet group, one end of each stator sub-coil is led out from the outer side surface of the stator silicon steel sheet group, the other end of each stator sub-coil is close to the inner side surface of the stator silicon steel sheet group, and the winding directions of two adjacent stator sub-coils are opposite, namely, one stator sub-coil is clockwise, and the other stator sub-coil is anticlockwise; the three-phase stator coil windings are respectively marked as an A-phase stator coil winding, a B-phase stator coil winding and a C-phase stator coil winding; taking a stator coil with any winding direction along the clockwise direction as a 1 st stator coil, starting from the 1 st stator coil, sequentially taking a 2 nd stator coil, a 3 rd stator coil, a 4 th stator coil, a 5 th stator coil and a 6 th stator coil as other five stator coils along the clockwise direction, wherein the 1 st stator coil and the 4 th stator coil form the A-phase stator coil, one end of the 1 st stator coil close to the outer side surface of a stator silicon steel sheet group is recorded as A+ of a stator exciting coil winding part, one end of the 4 th stator coil close to the outer side surface of the stator silicon steel sheet group is recorded as A-, the other end of the 1 st stator coil and the other end of the 4 th stator coil are connected, the 2 nd stator coil and the 5 th stator coil form a C-phase stator coil winding, one end of the outer side surface of the 1 st stator coil close to the stator steel sheet group is recorded as A-phase stator coil of a stator exciting coil winding part, one end of the 1 st stator coil close to the outer side surface of a stator steel sheet group is recorded as A-, one end of the first stator exciting coil of a first stator coil winding part is connected with the other end of the 4 th stator coil, one end of the 2 nd stator coil close to the other end of the 2 stator coil forms a C-phase stator coil winding, one end of the C-phase stator coil close to the C-phase stator coil winding of the C-phase stator coil is recorded as C-phase stator coil of a second stator coil, and the other end of the second stator coil is recorded as one end of the first stator coil of the C-phase coil of the stator coil, and the outer coil is connected with the other end of the first coil is recorded as one end of the first stator coil, and the outer coil of the stator coil is connected with the stator coil, and the outer coil is, the other end of the 3 rd stator sub-coil is connected with the other end of the 6 th stator sub-coil, the A-of the stator exciting coil winding part, the B-of the stator exciting coil winding part and the C-of the stator exciting coil winding part are connected; the three-phase inverter circuit module loads three-phase square wave driving voltage to the three-phase stator coil winding through A+, B+ and C+ of the stator exciting coil winding part, and the three-phase stator coil winding is electrified and controlled in a six-step phase-two-by-two conduction mode, wherein the 1 st step is that the A-phase stator coil winding and the B-phase stator coil winding are electrified: positive voltage is applied to A+ of the stator exciting coil winding part, B+ of the stator exciting coil winding part is grounded, and C+ of the stator exciting coil winding part is suspended; step 2, electrifying the A-phase stator coil winding and the C-phase stator coil winding: positive voltage is applied to the A+ of the stator exciting coil winding part, the B+ of the stator exciting coil winding part is suspended, and the C+ of the stator exciting coil winding part is grounded; step 3, electrifying the B-phase stator coil winding and the C-phase stator coil winding: the stator exciting coil winding part A+ is suspended, the stator exciting coil winding part B+ is applied with positive voltage, and the stator exciting coil winding part C+ is grounded; step 4, electrifying a B-phase stator coil winding and an A-phase stator coil winding: the A+ of the stator exciting coil winding part is grounded, the B+ of the stator exciting coil winding part is applied with positive voltage, and the C+ of the stator exciting coil winding part is suspended; step 5, energizing the C-phase stator coil winding and the A-phase stator coil winding: the A+ of the stator exciting coil winding part is grounded, the B+ of the stator exciting coil winding part is suspended, and the C+ of the stator exciting coil winding part is applied with positive voltage; step 6, electrifying a C-phase stator coil winding and a B-phase stator coil winding: the A+ of the stator exciting coil winding part is suspended, the B+ of the stator exciting coil winding part is grounded, and the C+ of the stator exciting coil winding part is applied with positive voltage; under the power-on control, the stator exciting coil winding part generates an alternating rotating magnetic field rotating clockwise, and the alternating rotating magnetic field provides electromagnetic torque for the rotor permanent magnet part and simultaneously carries out non-contact power supply for the rotor power receiving coil winding part.

3. The rotary driving and non-contact power supply system based on a single exciting coil as claimed in claim 2, wherein said rotor power receiving coil assembly comprises a rotor coil supporting structure, a three-phase rotor coil winding and six rotor silicon steel sheet groups, said rotor coil supporting structure comprises a second outer circumferential ring, a second inner circumferential ring and six second connecting arms, said second inner circumferential ring is coaxially disposed in said second outer circumferential ring, said rotor shaft coaxially penetrates through said second outer circumferential ring, said second outer circumferential ring is fixedly connected with said rotor shaft, said second outer circumferential ring is fixedly attached to said rotor rotating platform assembly, said second outer circumferential ring is fixedly connected with said second inner circumferential ring by said six second connecting arms, the six second connecting arms are uniformly arranged at intervals along the circumference by taking the rotor rotating shaft as the center of a circle, the angle between every two adjacent second connecting arms is 60 degrees, a second assembling space is formed between every two adjacent second connecting arms, six second assembling spaces are formed between the six second connecting arms, six rotor silicon steel sheet groups are correspondingly arranged in the six second assembling spaces one by one, each rotor silicon steel sheet group is formed by stacking m silicon steel sheets along the radial direction of the second assembling space, the radial section of each rotor silicon steel sheet group is an isosceles trapezoid, m is an integer larger than or equal to 2, the upper bottom of the radial section of each isosceles trapezoid of each rotor silicon steel sheet group faces the second inner circumference circle, the lower bottom of the radial section of each isosceles trapezoid of each rotor silicon steel sheet group faces the second outer circumference circle, two waists of the isosceles trapezoid radial section of each rotor silicon steel sheet group are fixed on the left and right second connecting arms in an adhesive manner; the three-phase rotor coil winding comprises six rotor sub-coils, the six rotor sub-coils are in one-to-one correspondence with the six rotor silicon steel sheet groups, one rotor sub-coil corresponds to one rotor silicon steel sheet group, the rotor sub-coils are wound on the inner side surface, the left side surface, the outer side surface and the right side surface of the rotor silicon steel sheet group, one end of each rotor sub-coil is led out from the outer side surface of the rotor silicon steel sheet group, the other end of each rotor sub-coil is close to the inner side surface of the rotor silicon steel sheet group, and the winding directions of two adjacent rotor sub-coils are opposite, namely, one rotor sub-coil is clockwise, and the other rotor sub-coil is anticlockwise; the three-phase rotor coil windings are respectively marked as an A-phase rotor coil winding, a B-phase rotor coil winding and a C-phase rotor coil winding; taking a rotor sub-coil with any winding direction along the clockwise direction as a 1 st rotor sub-coil, starting from the 1 st rotor sub-coil, sequentially taking the 2 nd rotor sub-coil, the 3 rd rotor sub-coil, the 4 th rotor sub-coil, the 5 th rotor sub-coil and the 6 th rotor sub-coil as other five sub-coils along the clockwise direction, wherein the 1 st rotor sub-coil and the 4 th rotor sub-coil form the A-phase rotor coil winding, one end of the 1 st rotor sub-coil, which is close to the outer side surface of a rotor silicon steel sheet group, is recorded as A+ of the rotor power receiving coil winding component, one end of the 4 th rotor sub-coil, which is close to the outer side surface of the rotor silicon steel sheet group, is recorded as A-, of the rotor power receiving coil winding component, the other end of the 1 st rotor sub-coil is connected with the other end of the 4 th rotor sub-coil, the 2 nd rotor sub-coil and the 5 th rotor sub-coil form the C-phase rotor coil winding, one end of the 2 nd rotor sub-coil, which is close to the outer side surface of the rotor silicon steel sheet group, is marked as C-of the rotor power receiving coil winding component, one end of the 5 th rotor sub-coil, which is close to the outer side surface of the rotor silicon steel sheet group, is marked as C+ of the rotor power receiving coil winding component, the other end of the 2 nd rotor sub-coil is connected with the other end of the 5 th rotor sub-coil, the 3 rd rotor sub-coil and the 6 th rotor sub-coil form the B-phase rotor coil winding, one end of the 3 rd rotor sub-coil, which is close to the outer side surface of the rotor silicon steel sheet group, is marked as B+ of the rotor power receiving coil winding component, and one end of the 6 th rotor sub-coil, which is close to the outer side surface of the rotor silicon steel sheet group, is marked as B-, the other end of the 3 rd rotor sub-coil is connected with the other end of the 6 th rotor sub-coil, the A-of the rotor power receiving coil winding component, the B-of the rotor power receiving coil winding component and the C-of the rotor power receiving coil winding component are connected; the rotor power receiving coil winding part rotates along with the rotor rotating shaft, and the alternating rotating magnetic field generated by the stator exciting coil winding part generates magnetic induction wire cutting because of relative motion, so that induced electromotive force is generated on the three-phase rotor coil winding, and the induced electromotive force is input into the three-phase rectifying circuit module to rectify and then output direct current voltage for supplying power to power receiving equipment on the rotor rotating platform part.

4. The rotary driving and non-contact power supply system based on a single excitation coil as claimed in claim 1, wherein the rotor permanent magnet component comprises a rotor permanent magnet supporting structure and six permanent magnets, the rotor permanent magnet supporting structure comprises a third outer circumferential ring, a third inner circumferential ring and six third connecting arms, the third inner circumferential ring is coaxially arranged in the third outer circumferential ring, the rotor rotating shaft coaxially penetrates through the third outer circumferential ring, the third outer circumferential ring is fixedly connected with the rotor rotating shaft, the third outer circumferential ring is fixedly connected with the third inner circumferential ring through six third connecting arms, the six third connecting arms are uniformly arranged along the circumference with the rotor rotating shaft as a circle center, the angle between each two adjacent third connecting arms is 60 degrees, a third assembly space is formed between each two adjacent third connecting arms, six third assembly spaces are formed between the six third connecting arms, the third connecting arms are correspondingly arranged in the radial direction of the isosceles trapezoid-shaped permanent magnets, the isosceles trapezoid-shaped permanent magnets are radially arranged on the radial sides of the isosceles trapezoid-shaped permanent magnets, and the isosceles-shaped permanent magnets are radially arranged on the radial sides of the isosceles trapezoid-shaped rings; the polarities of the magnetic poles of the adjacent two permanent magnets facing the same axial direction are opposite, namely, the polarities of the magnetic poles of the six permanent magnets facing the same axial direction are respectively N pole, S pole, N pole and S pole when observed along the clockwise direction; the alternating rotating magnetic field generated by the stator exciting coil winding part interacts with the permanent magnet magnetic field generated by the rotor permanent magnet part, so that electromagnetic torque is generated to act on the rotor permanent magnet part, and under the driving action of the electromagnetic torque, the rotor rotating platform part, the three-phase rectifying circuit module, the rotor power receiving coil winding part, the rotor permanent magnet part and the rotor rotating shaft rotate.

5. The rotary driving and non-contact power supply system based on the single exciting coil as claimed in claim 1, wherein the rotor shaft is mounted on the stator base platform part through a first bearing, an inner ring of the first bearing is in contact fit with the rotor shaft, an outer ring of the first bearing is in contact fit with the stator base platform part, the rotor permanent magnet part and the rotor shaft are axially fixed in a key slot fit mode, the stator exciting coil winding part is fixed on the stator base platform part through a plurality of bolts, a second bearing is arranged between the stator exciting coil winding part and the rotor shaft, an inner ring of the second bearing is in contact fit with the rotor shaft, an outer ring of the second bearing is in contact fit with the stator exciting coil winding part, the rotor rotating platform part and the rotor shaft are axially fixed in a key slot fit mode, and the rotor power receiving coil winding part and the rotor rotating platform part are axially fixed in a plurality of bolts.

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