CN221408560U - Three-phase permanent magnet motor with radial magnetic field and triangle connection - Google Patents

Abstract

The invention provides a radial magnetic field triangle connection three-phase permanent magnet motor, which is different from a common three-phase alternating current motor, wherein a motor stator is formed by superposing silicon steel sheets, the inside of which is cylindrical and is provided with armature grooves for winding wires and armature teeth, a stator coil is wound in a manner of surrounding two armature teeth by crossing three armature grooves, a cylindrical rotor is radially provided with a permanent magnet with magnetic force lines perpendicular to a motor rotating shaft, the magnetic force lines generated by the stator and the rotor are perpendicular to a motor shaft, the motor adopts a triangle connection method, can be directly used on a three-phase alternating current power supply without a driver, can also be used for rotating speed adjustment through an alternating current frequency converter, is also a high-efficiency permanent magnet brushless motor, can be driven to operate through a brushless motor driver, drives all north poles and south poles of the magnetic rotor with the permanent magnet during each driving, and realizes high electric energy driving efficiency and high power density. The energy conservation and emission reduction are realized in industrial power application, and the method has application prospect and great significance for replacing the existing widely used three-phase alternating current motor.

Description

Three-phase permanent magnet motor with radial magnetic field and triangle connection

The invention discloses a radial magnetic field triangle connection three-phase permanent magnet motor.

Technical Field

The invention relates to the technical field of three-phase alternating current motors and brushless motors.

Background

The radial magnetic field triangle connection three-phase permanent magnet motor is a novel product for converting electric energy into mechanical energy.

A three-phase AC motor is a typical main mode for converting electric energy into mechanical energy in industrial application, and the principle is that a cylindrical stator is wound with three-phase winding coils, when three-phase AC passes through the stator, a rotating magnetic field is generated, current is induced on a squirrel-cage rotor, a magnetic field on the rotor is generated, the magnetic fields of the stator and the rotor interact to drive the rotor to rotate, and mechanical energy is output. In the prior art, loss occurs during the induction of current on the squirrel-cage rotor by the induced current being reduced by the forced air gap between the stator and rotor, and the induced current on the squirrel-cage rotor and the magnetic field on the rotor will again be lost, resulting in a decrease in the efficiency of the motor. The radial magnetic field triangle connection three-phase permanent magnet motor directly acts the rotating magnetic field generated by the three-phase alternating current on the stator on the rotor with the permanent magnets to drive the rotor to rotate, so that the conversion efficiency of electric energy to output mechanical energy is improved, and meanwhile, the radial magnetic field triangle connection three-phase permanent magnet motor is also an efficient permanent magnet brushless motor, so that the radial magnetic field triangle connection three-phase permanent magnet motor has important significance for energy conservation and emission reduction in industrial power application, and is green and low in carbon.

Disclosure of Invention

In the radial magnetic field delta-connected three-phase permanent magnet motor, a mode that magnetic force lines of a stator and a rotor are perpendicular to a cylindrical rotor rotating shaft is adopted, a permanent magnet on the rotor is radially arranged on a rotor cylinder, the magnetic force lines of the rotor are perpendicular to the rotor rotating shaft, a motor stator is formed by superposing silicon steel sheets which are cylindrical inside and provided with armature grooves for winding and armature teeth, a winding mode of a stator coil on the motor stator is wound around two armature teeth in a distributed mode by crossing three armature grooves, the magnetic force lines generated by the stator and the rotor are perpendicular to a motor shaft, the motor can be directly used on a three-phase alternating current power supply without a driver, and the motor efficiency and the power can be improved under the same specification condition compared with the traditional three-phase alternating current motor.

The motor stator of the radial magnetic field delta-connected three-phase permanent magnet motor is formed by superposing silicon steel sheets, the inside of which is cylindrical and is provided with armature grooves for winding wires and armature teeth, magnetic force lines generated by the stator are perpendicular to a motor rotating shaft, three-phase stator windings are wound between the armature teeth in a mode of winding stator coils around two armature teeth by crossing three armature grooves, and a radial magnetic field is generated during power-on driving; the cylindrical rotor is provided with permanent magnets with magnetic force lines perpendicular to a motor rotating shaft in the radial direction of a rotor cylinder, the magnetic force lines are distributed in the radial direction, the magnetic poles of the permanent magnets are adjacently arranged in the south and north poles, and each south pole and each north pole on the rotor are driven by the repulsive force and attractive force of a magnetic field generated by a stator coil at the same time when the rotor is electrified and driven; the three-phase windings are connected by adopting a triangle, and when the three-phase winding is applied to three-phase alternating current, the input ends of the three-phase stator windings are respectively connected with three phase lines of the three-phase alternating current; when the three-phase stator winding is applied to a permanent magnet brushless motor, the input ends of the three-phase stator winding are respectively connected with three output ends of a brushless motor driver.

The winding mode of the stator winding and the connection mode between the windings are that the same phase winding is wound around two armature teeth by crossing three armature grooves on the armature teeth of a stator formed by superposition of silicon steel sheets, the winding directions of two adjacent coils of the same phase winding are opposite, and when the armature grooves of the centers of the two adjacent coils are not counted, the centers of the two coils are separated by two armature grooves; the winding mode of the three-phase windings is the same; adjacent windings of adjacent phases are placed with adjacent winding edges in the same armature slot; after the three-phase winding is completed, connecting the starting end of one phase winding with the tail end of the winding of the adjacent phase, and connecting the starting end of the one phase winding with the tail end of the winding of the adjacent phase to form three input ends of the winding according to the three input ends of the three phase winding so as to form the traditional triangle connection; when one phase winding of the three-phase winding is opposite to the other two phases winding, the starting end and the ending end of the phase winding are exchanged and connected according to the method to form the same electrical characteristic.

The cylindrical rotor is constructed in such a way that magnetic lines of force of permanent magnets on the cylindrical rotor are perpendicular to a rotating shaft of a motor and are distributed in a radial direction, magnetic poles of the permanent magnets on the rotor in the outer diameter direction of the rotor are adjacently arranged in a south pole and a north pole, the permanent magnets can be magnetized in the outer diameter direction by using magnetic rings, and the permanent magnets can also be mounted on a rotor body of the cylindrical rotor.

The relationship between the number of magnetic poles of a permanent magnet rotor of the radial magnetic field triangle connection three-phase permanent magnet motor in the outer radial direction and the number of armature slots of a stator is as follows: the number of stator armature slots is equal to the number of the sum of the north and south poles of the permanent magnet rotor in the outer radial direction multiplied by 3.

When the radial magnetic field triangle connection three-phase permanent magnet motor is applied to three-phase alternating current, the input ends of three-phase windings on a stator are respectively connected to three phase lines of the three-phase alternating current, the phase difference of each phase of the three-phase alternating current is 120 degrees, and the three-phase alternating current drives a motor rotor to rotate.

When the radial magnetic field triangle connection three-phase permanent magnet motor is applied to a permanent magnet brushless motor, the input ends of three-phase windings on a stator are respectively connected with three corresponding output ends of a brushless motor driver, and the brushless motor driver with six output driving states drives a motor rotor to rotate.

When the radial magnetic field triangle connection three-phase permanent magnet motor is applied to three-phase alternating current, the rotation speed of a motor rotor is regulated by a three-phase alternating current frequency converter which can change the output frequency and has 120-degree phase difference of each phase, and three phase lines output by the three-phase alternating current frequency converter are respectively connected to three input ends of a three-phase winding on a stator. The frequency of the three-phase alternating current output by the frequency converter is changed so as to achieve the aim of adjusting the rotating speed.

Drawings

Fig. 1 is a schematic illustration of a three-phase 12-tooth stator M1 wound in a distributed manner.

Fig. 2 is a winding diagram showing only one phase winding (U-phase) on the stator with fig. 1 broken away for ease of understanding.

Fig. 3 is a winding diagram showing only one phase winding (V-phase) on the stator with fig. 1 broken away for ease of understanding.

Fig. 4 is a diagram of the magnetic field generated by the three-phase drive current and the drive to the rotor when the U-phase current is 0 degrees.

Fig. 5 is a diagram of the magnetic field generated by the three-phase drive current and the drive to the rotor when the U-phase current is 30 degrees.

Fig. 6 is a diagram of the magnetic field generated by the three-phase drive current and the drive to the rotor when the U-phase current is 60 degrees.

Fig. 7 is a diagram of the magnetic field generated by the three-phase drive current and the drive to the rotor when the U-phase current is 90 degrees.

Fig. 8 is a diagram of the magnetic field generated by the three-phase drive current and the drive to the rotor when the U-phase current is 120 degrees.

Fig. 9 is a diagram of the magnetic field generated by the three-phase drive current and the drive to the rotor when the U-phase current is 150 degrees.

Fig. 10 is a diagram of the magnetic field generated by the three-phase drive current and the drive to the rotor when the U-phase current is 180 degrees.

Fig. 11 is a diagram of the magnetic field generated by the three-phase drive current and the drive to the rotor when the U-phase current is 210 degrees.

Fig. 12 is a diagram of the magnetic field generated by the three-phase drive current and the drive to the rotor when the U-phase current is 240 degrees.

Fig. 13 is a diagram of the magnetic field generated by the three-phase drive current and the drive to the rotor when the U-phase current is 270 degrees.

Fig. 14 is a diagram of the magnetic field generated by the three-phase drive current and the drive to the rotor when the U-phase current is 300 degrees.

Fig. 15 is a diagram of the magnetic field generated by the three-phase drive current and the drive to the rotor when the U-phase current is 330 degrees.

Fig. 16 to 21 are diagrams of magnetic fields generated in six driving states and driving of the rotor as brushless motors.

Fig. 22 is a winding diagram when the V-phase winding is wound in the opposite direction to the other two-phase winding.

Fig. 23 is a diagram showing the magnetic field generated by the three-phase drive current and the drive of the rotor when the U-phase current is 30 degrees when the V-phase winding is wound in the opposite direction to the other two-phase winding in fig. 22.

Detailed Description

The number of armature slots of the stator of the three-phase permanent magnet motor connected by the radial magnetic field triangle is equal to the sum of south pole and north pole of the permanent magnet rotor in the outer radial direction multiplied by 3. As can be seen in fig. 1, in the case of a three-phase winding, two pairs of 4 poles, the number of slots being equal to 4 poles by 3 slots being 12 slots; if six pairs of 12 poles are used, 36 slots are used.

The winding mode of the stator winding of the three-phase permanent magnet motor connected by the radial magnetic field triangle is to wind around two armature teeth across three armature grooves, and the winding directions of two adjacent coils of the same phase winding are opposite, when the armature grooves at the centers of the two coils are not counted, the centers of the two adjacent coils are separated by 2 armature grooves, so that the winding directions of the two adjacent coils of the same phase winding are kept opposite until the winding is finished, the winding mode is also used for winding the other two phase windings, and the adjacent winding edges of the adjacent phase windings are placed in the same armature groove. This can be seen in fig. 1 to 3. The three-phase windings are connected with each other according to the starting end of one phase winding and the tail end of the other phase winding to form three input ends of the windings, so that the traditional triangle connection method is formed. The winding and driving modes of the three-phase permanent magnet motor are described below by using a specific implementation mode that one stator is 12 armature teeth and the rotor is a radial magnetic field triangle connection three-phase permanent magnet motor with 4 magnetic poles.

Fig. 1 is a schematic diagram of a three-phase 12-armature-tooth stator M1 in a distributed winding manner in which the arrows on the windings indicate the winding direction, the winding manner is to wind around two armature teeth across three armature slots, adjacent two coils of the same phase winding are wound in opposite directions, and when the armature slots in which the centers of the two coils are located are not counted, the centers of the two coils are separated by two armature slots. The windings of adjacent phases are arranged adjacent to the same armature slot. M2 in the figure is a two-to-four pole cylindrical rotor with radial magnetic field. For the sake of clear pattern, the windings on the bottom surface of the stator silicon steel sheet are hidden.

In fig. 2, the U-phase winding starts with U1, the winding coil starts to wind clockwise from the left armature slot of the armature tooth 1 to the right armature slot of the armature tooth 2 (the center of the coil is in the middle of the armature teeth 1 and 2), turns out from the right armature slot of the armature tooth 2 after the required number of turns, leads to the right armature slot of the armature tooth 5, winds counterclockwise to the left armature slot of the armature tooth 4 (the center of the coil is in the middle of the armature teeth 4 and 5 and is separated from the center of the previous coil by 2 armature slots), turns out from the left armature slot of the armature tooth 4 after the required number of turns, leads to the left armature slot of the armature tooth 7, the coil is wound to the right armature groove of the armature tooth 8 in the clockwise direction (the center of the coil is located in the middle of the armature teeth 7 and 8 and is separated from the center of the previous coil by 2 armature grooves), the coil is wound to the required number of turns and then rotated out of the right armature groove of the armature tooth 8, the coil is led to the right armature groove of the armature tooth 11, the coil is wound to the left armature groove of the armature tooth 10 in the anticlockwise direction (the center of the coil is located in the middle of the armature teeth 10 and 11 and is also separated from the center of the previous coil by 2 armature grooves, and the center of the coil is also separated from the first coil centered in the middle of the armature teeth 1 and 2 by 2 armature grooves), and the coil is wound to the required number of turns and then rotated out of the left armature groove of the armature tooth 10 as a head U2.

In fig. 3, the V-phase winding starts with V1, the winding turns from the left armature slot of the armature tooth 3 in a clockwise direction to the right armature slot of the armature tooth 4 (the center of the winding is in the middle of the armature teeth 3 and 4), turns from the right armature slot of the armature tooth 4 after the required number of turns, turns from the right armature slot of the armature tooth 7 in an anticlockwise direction to the left armature slot of the armature tooth 6 (the center of the winding is in the middle of the armature teeth 6 and 7, 2 armature slots from the center of the previous winding), turns from the left armature slot of the armature tooth 6 after the required number of turns, turns from the left armature slot of the armature tooth 9 in a clockwise direction to the right armature slot of the armature tooth 10 (the center of the winding is in the middle of the armature teeth 9 and 10, 2 armature slots from the center of the previous winding), turns from the right armature slot of the armature tooth 10 after the winding to the required number of turns, turns from the right armature slot of the armature tooth 13 (the center of the winding is 2 armature slots from the center of the armature slot of the armature tooth 12 after the winding is in the middle of the armature slot of the armature tooth 12 and the armature slot of the winding 2 after the winding is in the middle of the armature slot of the winding 2 and the armature slot of the winding is 2.

In the same manner as described above, it can be seen in fig. 1 that the W-phase winding starts with W1, winding coil turns in a clockwise direction from the left armature slot of the armature tooth 5 to the right armature slot of the armature tooth 6 (the center of the coil is in the middle of the armature teeth 5 and 6), turns out from the right armature slot of the armature tooth 6 after the desired number of turns, turns out from the right armature slot of the armature tooth 9 after the desired number of turns, turns out from the left armature slot of the armature tooth 8 in a counter-clockwise direction (the center of the coil is in the middle of the armature teeth 8 and 9, 2 armature slots from the center of the previous coil), turns out from the left armature slot of the armature tooth 8 after the desired number of turns, turns out from the left armature slot of the armature tooth 11 after the desired number of turns (the center of the coil is in the middle of the armature teeth 11 and 12, 2 armature slots from the center of the previous coil is 2), turns out from the right armature slot of the armature tooth 12 after the desired number of turns (the center of the coil is in the middle of the armature slot 2) and turns out from the center of the armature slot 2 after the armature slot of the coil is in the middle of the center 2 and the armature slot 2 is in the middle of the armature slot 2.

The first coil of the U phase is wound around the armature teeth 1 and 2, the first coil of the V phase is wound around the armature teeth 3 and 4, armature slots are formed between the adjacent armature teeth 2 and 3 of the U phase, the first coil of the W phase is wound around the armature teeth 5 and 6, armature slots are formed between the adjacent armature teeth 4 and 5 of the V phase, and therefore adjacent windings of the adjacent phases can be seen to be placed on the same armature slot. The winding mode of the three-phase windings is the same, after the three-phase windings are completed, the starting end of one-phase winding is connected with the tail end of the winding of the adjacent phase, the three-phase windings are all connected with the tail end of the winding of the adjacent phase according to the starting end of one-phase winding to form three input ends of the motor stator winding, and a traditional triangle connection (in the motor field, the triangle connection and the star connection are all known connection methods, but from the patent angle, two completely different motor structures are connected), such as U1 and W2 in fig. 1 are connected with an A phase line of three-phase alternating current, V1 and U2 are connected with a B phase line of the three-phase alternating current, and W1 and V2 are connected with a C phase line of the three-phase alternating current.

Fig. 2 also shows the magnetic patterns on the individual teeth of the three-phase stator winding U1-U2 of fig. 1 when current +a flows in U1 and current-a flows out U2, respectively, the arrows on the windings on the figure are the coil winding direction and also indicate the current direction, 1 to 12 are the teeth of its stator, the U phase produces a magnetic pattern on the individual teeth, S is the south pole, and N is the north pole.

The following is a description of the principle and action mechanism of the motor by analyzing the magnetic pole variation generated on the armature teeth of the stator and the acting force of the permanent magnet field on the rotor with respect to each phase variation of the radial field triangle connection three-phase permanent magnet motor when the three-phase alternating current is in use in combination with fig. 4 to 15.

In fig. 4 to 21 and 23, arrows on the respective windings indicate the current direction, and the current flows from the positive electrode +a to the negative electrode-a; the broken lines in each figure represent the direction of magnetic lines from north to south, and in order to show the magnetic lines of force when the three-phase alternating current is in each phase, we have intentionally drawn the rotor smaller to show the magnetic lines of force when in that phase. For theoretical analysis, the magnetic poles of the stator and the rotor can be equivalent to a certain point, and the method is commonly adopted as a common method in electrodynamics. In addition, for clarity, we have omitted from the corresponding figures for phases without current flow. For the case where one phase winding is energized on one of the teeth to produce a south pole and the other phase winding is energized to produce a north pole, which appears in the figures, we mark the one tooth with a small circle, such as teeth 2,5,8 and 11 on fig. 4, which we call electrical losses (power losses). To facilitate analysis of the stator field variation, the magnitude of the normalized field strength is indicated on the armature teeth and a value of 0.866 is indicated at 0.9 and a value of 0.433 is indicated at 0.4 (for two-phase series windings, the current is half that of one-phase winding, 0.866/2=0.433, with the winding inductance omitted). In fig. 4 to 21, the so-called "left" and "right" are defined in terms of left and right positions of the center of the armature tooth 6 so as to unify the directions of observation.

From the basic knowledge of three-phase ac, we know that the phases of three-phase ac differ in phase by 120 degrees, and this common knowledge we do not give a plot of three-phase ac, e.g. when phase a is 0 degrees, phase B is-120 degrees and phase C is 120 degrees.

The stator and rotor magnetic pole driving conditions at each driving moment are described below in units of 30 degrees (the magnitude of the magnetic field intensity on the armature teeth is 1 according to the normalization theory, the maximum value is 1, the magnetic field intensity on the armature teeth is also 1 when the current is 1, for convenience of understanding, the resultant value of the magnetic field intensity generated on each phase winding on the armature teeth is marked on the periphery of the teeth, such as 1.8S,0.9N, and the like, for example, one phase winding generates 0.9N on one armature tooth, another phase generates 0.9N, and is combined on the periphery of the tooth to mark 1.8N, one phase winding generates 1.0S and another phase generates 0.5S, and is combined on the periphery of the tooth to mark 1.5S), and S and N after numbers represent the north-south attribute of the magnetic poles, and are described by taking phase A as a phase reference:

At 0 degrees, as shown in fig. 4, the a phase is 0 degrees, and the magnetic field strength is 0; phase B is-120 degrees, and the magnetic field intensity is-0.866; when the C phase is 120 degrees, the magnetic field intensity is 0.866; the phase A has no current passing through, the current flows in from the phase C, and the phase B flows out. Generating the magnetic poles and strength as shown in fig. 4, the stator south pole is combined between the armature teeth 12 and 1 to push the rotor magnetic pole south pole S1 to rotate anticlockwise, and the north pole is combined between the armature teeth 3 and 4 to also attract the rotor magnetic pole south pole S1 to rotate anticlockwise; the north poles between the armature teeth 3 and 4 also push the rotor magnetic pole north pole N1 to rotate anticlockwise, and the south poles synthesized between the armature teeth 6 and 7 of the stator also attract the rotor magnetic pole north pole N1 to rotate anticlockwise; the south pole between the armature teeth 6 and 7 also pushes the south pole S2 on the rotor to rotate anticlockwise, and the north pole is combined between the armature teeth 9 and 10 and also attracts the south pole S2 of the rotor to rotate anticlockwise; the north poles between the armature teeth 9, 10 also push the rotor magnetic pole north pole N2 to rotate anticlockwise, and the south poles combined between the armature teeth 12, 71 of the stator also attract the rotor magnetic pole north pole N2 to rotate anticlockwise; this together constitutes a counter-clockwise rotation of the rotor. The armature teeth 2,5,8 and 11 are magnetized zero by the two windings creating opposite magnetic properties on them and being of equal value.

At 30 degrees, as shown in FIG. 5, the A phase is 30 degrees, and the magnetic field strength is 0.5; phase B is-90 degrees, and the magnetic field intensity is-1; when the C phase is 150 degrees, the magnetic field intensity is 0.5; the current flows in from the C phase and the A phase, and flows out from the B phase. Generating magnetic poles and strength as shown in fig. 5, wherein the stator south pole is combined with the armature teeth 1 to push the rotor magnetic pole south pole S1 to rotate anticlockwise, and the north pole is combined with the armature teeth 4 to also attract the rotor magnetic pole south pole S1 to rotate anticlockwise; the north pole of the armature teeth 4 also pushes the rotor magnetic pole north pole N1 to rotate anticlockwise, and the south pole of the stator synthesized on the armature teeth 7 also attracts the rotor magnetic pole north pole N1 to rotate anticlockwise; the south pole of the armature teeth 7 also pushes the south pole S2 on the rotor to rotate anticlockwise, and the north pole is combined with the armature teeth 10 and also attracts the south pole S2 of the rotor to rotate anticlockwise; the north pole of the armature teeth 10 also pushes the rotor magnetic pole north pole N2 to rotate anticlockwise, and the south pole of the stator synthesized on the armature teeth 1 also attracts the rotor magnetic pole north pole N2 to rotate anticlockwise; this together constitutes a counter-clockwise rotation of the rotor.

At 60 degrees, as shown in FIG. 6, the A phase is 60 degrees, and the magnetic field strength is 0.866; phase B is-60 degrees, and the magnetic field intensity is-0.866; when the C phase is 180 degrees, the magnetic field intensity is 0; the current flows in from phase A and flows out from phase B. Generating magnetic poles and strength as shown in fig. 6, wherein a stator south pole is combined between the armature teeth 1 and 2 to push a rotor magnetic pole south pole S1 to rotate anticlockwise, and a north pole is combined between the armature teeth 4 and 5 to also attract the rotor magnetic pole south pole S1 to rotate anticlockwise; the north poles between the armature teeth 4 and 5 also push the rotor magnetic pole north pole N1 to rotate anticlockwise, and the south poles synthesized between the armature teeth 7 and 8 of the stator also attract the rotor magnetic pole north pole N1 to rotate anticlockwise; the south pole between the armature teeth 7 and 8 also pushes the south pole S2 on the rotor to rotate anticlockwise, and the north pole is combined between the armature teeth 10 and 11 and also attracts the south pole S2 of the rotor to rotate anticlockwise; the north poles between the armature teeth 10 and 11 also push the rotor magnetic pole north pole N2 to rotate anticlockwise, and the south poles synthesized between the armature teeth 1 and 2 of the stator also attract the rotor magnetic pole north pole N2 to rotate anticlockwise; this together constitutes a counter-clockwise rotation of the rotor. The armature teeth 3,6,9 and 12 are magnetized zero by the two windings creating opposite magnetic properties on them and being of equal value.

At 90 degrees, as shown in fig. 7, the phase a is 90 degrees, and the magnetic field strength is 1; phase B is-30 degrees, and the magnetic field intensity is-0.5; when the C phase is 210 degrees, the magnetic field intensity is-0.5; the current flows in from phase a, and the current flows out from phases B and C. Generating magnetic poles and strength as shown in fig. 7, wherein the stator south pole is combined with the armature teeth 2 to push the rotor magnetic pole south pole S1 to rotate anticlockwise, and the north pole is combined with the armature teeth 5 to also attract the rotor magnetic pole south pole S1 to rotate anticlockwise; the north pole of the armature teeth 5 also pushes the rotor magnetic pole north pole N1 to rotate anticlockwise, and the south pole of the stator synthesized on the armature teeth 8 also attracts the rotor magnetic pole north pole N1 to rotate anticlockwise; the south pole of the armature teeth 8 also pushes the south pole S2 on the rotor to rotate anticlockwise, and the north pole is combined with the armature teeth 11 and also attracts the south pole S2 of the rotor to rotate anticlockwise; the north pole of the armature tooth 11 also pushes the rotor magnetic pole north pole N2 to rotate anticlockwise, and the south pole of the armature tooth 2 is synthesized by the stator to attract the rotor magnetic pole north pole N2 to rotate anticlockwise; this together constitutes a counter-clockwise rotation of the rotor.

120 Degrees, as shown in FIG. 8, the A phase is 120 degrees, and the magnetic field strength is 0.866; phase B is 0 degree, and the magnetic field intensity is 0; when the C phase is 240 degrees, the magnetic field intensity is-0.866; the current flows in from phase A and flows out from phase C. Generating magnetic poles and strength as shown in fig. 8, wherein a stator south pole is combined between the armature teeth 2 and 3 to push a rotor magnetic pole south pole S1 to rotate anticlockwise, and a north pole is combined between the armature teeth 5 and 6 to also attract the rotor magnetic pole south pole S1 to rotate anticlockwise; the north poles between the armature teeth 5 and 6 also push the rotor magnetic pole north pole N1 to rotate anticlockwise, and the south poles synthesized between the armature teeth 8 and 9 of the stator also attract the rotor magnetic pole north pole N1 to rotate anticlockwise; the south pole between the armature teeth 8 and 9 also pushes the south pole S2 on the rotor to rotate anticlockwise, and the north pole is combined between the armature teeth 11 and 12 and also attracts the south pole S2 of the rotor to rotate anticlockwise; the north poles between the armature teeth 11, 12 also push the rotor magnetic pole north pole N2 to rotate anticlockwise, and the south poles synthesized between the armature teeth 2,3 also attract the rotor magnetic pole north pole N2 to rotate anticlockwise; this together constitutes a counter-clockwise rotation of the rotor. The armature teeth 4,7, 10 and 1 are magnetized zero by the two windings creating opposite magnetic properties on them and being of equal value.

At 150 degrees, as shown in fig. 9, the a phase is 150 degrees, and the magnetic field strength is 0.5; phase B is 30 degrees, and the magnetic field intensity is 0.5; when the C phase is 270 degrees, the magnetic field intensity is-1; the current flows in from the A phase and the B phase, and flows out from the C phase. Generating magnetic poles and strength as shown in fig. 9, wherein the stator south pole is combined with the armature teeth 3 to push the rotor magnetic pole south pole S1 to rotate anticlockwise, and the north pole is combined with the armature teeth 6 to also attract the rotor magnetic pole south pole S1 to rotate anticlockwise; the north pole of the armature teeth 6 also pushes the rotor magnetic pole north pole N1 to rotate anticlockwise, and the south pole of the stator synthesized on the armature teeth 9 also attracts the rotor magnetic pole north pole N1 to rotate anticlockwise; the south pole of the armature teeth 9 also pushes the south pole S2 on the rotor to rotate anticlockwise, and the north pole is combined with the armature teeth 12 and also attracts the south pole S2 of the rotor to rotate anticlockwise; the north pole of the armature teeth 12 also pushes the rotor magnetic pole north pole N2 to rotate anticlockwise, and the south pole of the stator synthesized on the armature teeth 3 also attracts the rotor magnetic pole north pole N2 to rotate anticlockwise; this together constitutes a counter-clockwise rotation of the rotor.

180 Degrees, as shown in FIG. 10, the A phase is 180 degrees, and the magnetic field strength is 0; phase B is 60 degrees, and the magnetic field intensity is 0.866; when the C phase is 300 ℃, the magnetic field intensity is-0.866; the current flows in from phase B and flows out from phase C. Generating magnetic poles and strength as shown in fig. 10, wherein a stator south pole is combined between the armature teeth 3 and 4 to push a rotor magnetic pole south pole S1 to rotate anticlockwise, and a north pole is combined between the armature teeth 6 and 7 to also attract the rotor magnetic pole south pole S1 to rotate anticlockwise; the north poles between the armature teeth 6 and 7 also push the rotor magnetic pole north pole N1 to rotate anticlockwise, and the south poles combined between the armature teeth 9 and 10 of the stator also attract the rotor magnetic pole north pole N1 to rotate anticlockwise; the south poles between the armature teeth 9, 10 also push the south pole S2 on the rotor to rotate anticlockwise, and the north pole is combined between the armature teeth 12,1 and also attracts the south pole S2 of the rotor to rotate anticlockwise; the north poles between the armature teeth 12,1 also push the rotor magnetic pole north pole N2 to rotate anticlockwise, and the south poles synthesized between the armature teeth 3,4 of the stator also attract the rotor magnetic pole north pole N2 to rotate anticlockwise; this together constitutes a counter-clockwise rotation of the rotor. The armature teeth 5,8, 11 and 2 are magnetized zero by the two windings creating opposite magnetic properties on them and being of equal value.

At 210 degrees, as shown in FIG. 11, the A phase is 210 degrees, and the magnetic field strength is-0.5; phase B is 90 degrees, and the magnetic field intensity is 1; when the C phase is 330 ℃, the magnetic field intensity is-0.5; the current flows in from the B, and the A phase and the C phase flow out. Generating magnetic poles and strength as shown in fig. 11, wherein the stator south pole is combined with the armature teeth 4 to push the rotor magnetic pole south pole S1 to rotate anticlockwise, and the north pole is combined with the armature teeth 7 to also attract the rotor magnetic pole south pole S1 to rotate anticlockwise; the north pole of the armature teeth 7 also pushes the rotor magnetic pole north pole N1 to rotate anticlockwise, and the south pole of the stator synthesized at the armature teeth 10 also attracts the rotor magnetic pole north pole N1 to rotate anticlockwise; the south pole of the armature teeth 10 also pushes the south pole S2 on the rotor to rotate anticlockwise, and the north pole is combined with the armature teeth 1 and also attracts the south pole S2 of the rotor to rotate anticlockwise; the north pole of the armature teeth 1 also pushes the rotor magnetic pole north pole N2 to rotate anticlockwise, and the south pole of the stator synthesized on the armature teeth 4 also attracts the rotor magnetic pole north pole N2 to rotate anticlockwise; this together constitutes a counter-clockwise rotation of the rotor.

240 Degrees, as shown in FIG. 12, the A phase is 240 degrees, and the magnetic field strength is-0.866; phase B is 120 degrees, and the magnetic field intensity is 0.866; when the C phase is 360 degrees, the magnetic field intensity is 0; the current flows in from phase B and flows out from phase A. Generating magnetic poles and strength as shown in fig. 12, wherein a stator south pole is combined between the armature teeth 4 and 5 to push the rotor magnetic pole south pole S1 to rotate anticlockwise, and a north pole is combined between the armature teeth 7 and 8 to also attract the rotor magnetic pole south pole S1 to rotate anticlockwise; the north poles between the armature teeth 7 and 8 also push the rotor magnetic pole north pole N1 to rotate anticlockwise, and the south poles combined between the armature teeth 10 and 11 of the stator also attract the rotor magnetic pole north pole N1 to rotate anticlockwise; the south poles between the armature teeth 10 and 11 also push the south pole S2 on the rotor to rotate anticlockwise, and the north pole is combined between the armature teeth 1 and 2 and also attracts the south pole S2 of the rotor to rotate anticlockwise; the north poles between the armature teeth 1 and 2 also push the rotor magnetic pole north pole N2 to rotate anticlockwise, and the south poles synthesized between the armature teeth 4 and 5 of the stator also attract the rotor magnetic pole north pole N2 to rotate anticlockwise; this together constitutes a counter-clockwise rotation of the rotor. The armature teeth 6,9, 12 and 3 are magnetized zero by the two windings creating opposite magnetic properties on them and being of equal value.

At 270 degrees, as shown in FIG. 13, the A phase is 270 degrees, and the magnetic field strength is-1; phase B is 150 degrees, and the magnetic field strength is 0.5; when the C phase is 30 degrees, the magnetic field intensity is 0.5; the current flows in from the B phase and the C phase, and the A phase flows out. Generating magnetic poles and strength as shown in fig. 13, wherein the stator south pole is combined with the armature teeth 5 to push the rotor magnetic pole south pole S1 to rotate anticlockwise, and the north pole is combined with the armature teeth 8 to also attract the rotor magnetic pole south pole S1 to rotate anticlockwise; the north pole of the armature teeth 8 also pushes the rotor magnetic pole north pole N1 to rotate anticlockwise, and the south pole of the stator synthesized at the armature teeth 11 also attracts the rotor magnetic pole north pole N1 to rotate anticlockwise; the south pole of the armature tooth 11 also pushes the south pole S2 on the rotor to rotate anticlockwise, and the north pole is combined with the armature tooth 2 and also attracts the south pole S2 of the rotor to rotate anticlockwise; the north pole of the armature teeth 4 also pushes the rotor magnetic pole north pole N2 to rotate anticlockwise, and the south pole of the stator synthesized on the armature teeth 5 also attracts the rotor magnetic pole north pole N2 to rotate anticlockwise; this together constitutes a counter-clockwise rotation of the rotor.

At 300 degrees, as shown in FIG. 14, the A phase is 300 degrees, and the magnetic field strength is-0.866; phase B is 180 degrees, and the magnetic field intensity is 0; when the C phase is 60 degrees, the magnetic field intensity is 0.866; the current flows in from the B phase and the C phase, and the A phase flows out. Generating the magnetic poles and strength shown in fig. 14, wherein the stator south pole is combined between the armature teeth 5 and 6 to push the rotor magnetic pole south pole S1 to rotate anticlockwise, and the north pole is combined between the armature teeth 8 and 9 to also attract the rotor magnetic pole south pole S1 to rotate anticlockwise; the north poles between the armature teeth 8 and 9 also push the rotor magnetic pole north pole N1 to rotate anticlockwise, and the south poles combined between the armature teeth 11 and 12 of the stator also attract the rotor magnetic pole north pole N1 to rotate anticlockwise; the south poles between the armature teeth 11, 12 also push the south pole S2 on the rotor to rotate anticlockwise, the north pole is combined between the armature teeth 2,3, and the south pole S2 of the rotor is also attracted to rotate anticlockwise; the north poles between the armature teeth 2 and 3 also push the rotor magnetic pole north pole N2 to rotate anticlockwise, and the south poles synthesized between the armature teeth 5 and 6 of the stator also attract the rotor magnetic pole north pole N2 to rotate anticlockwise; this together constitutes a counter-clockwise rotation of the rotor. The armature teeth 7, 10,1 and 4 are magnetized zero by the two windings creating opposite magnetic properties on them and being of equal value.

330 Degrees, as shown in FIG. 15, the A phase is 330 degrees, and the magnetic field strength is-0.5; phase B is 210 degrees, and the magnetic field intensity is-0.5; when the C phase is 90 degrees, the magnetic field intensity is 1; the current flows in from the C phase and flows out from the A phase and the B phase. Generating magnetic poles and strength as shown in fig. 15, wherein the stator south pole is combined with the armature teeth 6 to push the rotor magnetic pole south pole S1 to rotate anticlockwise, and the north pole is combined with the armature teeth 9 to also attract the rotor magnetic pole south pole S1 to rotate anticlockwise; the north pole of the armature teeth 9 also pushes the rotor magnetic pole north pole N1 to rotate anticlockwise, and the south pole of the stator combined at the armature teeth 12 also attracts the rotor magnetic pole north pole N1 to rotate anticlockwise; the south pole of the armature teeth 12 also pushes the south pole S2 on the rotor to rotate anticlockwise, and the north pole is combined with the armature teeth 3 and also attracts the south pole S2 of the rotor to rotate anticlockwise; the north pole of the armature teeth 3 also pushes the rotor magnetic pole north pole N2 to rotate anticlockwise, and the south pole of the stator synthesized on the armature teeth 6 also attracts the rotor magnetic pole north pole N2 to rotate anticlockwise; this together constitutes a counter-clockwise rotation of the rotor.

Through the phase change of the three-phase power supply and the caused driving of the permanent magnet on the rotor, the position of the permanent magnet S2 on the rotor is rotated to the position of S1 when the phase A is 0 degrees, the driving of one-time electric angle is completed, and the process is repeated later, so that the rotation of the motor rotor is realized. From the above process, it can be seen that the rotation speed of the motor rotor is caused by the phase change of the three-phase alternating current, and the speed of the phase change depends on the frequency of the three-phase alternating current, that is, the radial magnetic field triangle is connected with the three-phase permanent magnet motor to regulate the rotation speed by the three-phase alternating current frequency converter by changing the frequency of the output current, and the three phase lines output by the three-phase alternating current frequency converter are respectively connected with the input end of the radial magnetic field triangle connected with the three-phase permanent magnet motor.

The driving principle of the present invention when applied to a permanent magnet brushless motor is described below, the input ends of the motor are respectively connected to three corresponding output ends of the brushless motor driver, the position sensor of the rotor magnetic pole on the motor adopts a hall sensor with latch, and the hall sensor is represented by HA, HB and HC in fig. 16 to 21, and other sensing modes can be used. The drive adopts a conventional brushless motor drive, the driving states of which are six, namely current flows from W to V, U to W, V to U and W to U, the working principle of the conventional brushless motor drive is not described here, in fig. 18 to 23, we use +A for current inflow, use-A for current outflow, and use N,2S for magnetism and magnitude of a combined magnetic field on the armature teeth.

In the driving state 1, as shown in fig. 16, the three hall sensor output states are ha=l, hb=h, and hc=h; the U phase has no current passing therethrough, so it is hidden in the figure, and the current flows in from W1, flows out from W2, flows in V2, and flows out from V1. Generating the magnetic poles and strength as shown in fig. 16, the stator south pole is combined between the armature teeth 12 and 1 to push the rotor magnetic pole south pole S1 to rotate anticlockwise, and the north pole is combined between the armature teeth 3 and 4 to also attract the rotor magnetic pole south pole S1 to rotate anticlockwise; the north poles between the armature teeth 3 and 4 also push the rotor magnetic pole north pole N1 to rotate anticlockwise, and the south poles synthesized between the armature teeth 6 and 7 of the stator also attract the rotor magnetic pole north pole N1 to rotate anticlockwise; the south pole between the armature teeth 6 and 7 pushes the south pole S2 on the rotor to rotate anticlockwise, and the north pole is combined between the armature teeth 9 and 10 and also attracts the south pole S2 of the rotor to rotate anticlockwise; the north poles between the armature teeth 9, 10 simultaneously push the rotor magnetic pole north pole N2 to rotate anticlockwise, and the south poles combined between the armature teeth 12,1 of the stator also attract the rotor magnetic pole north pole N2 to rotate anticlockwise; this together constitutes a counter-clockwise rotation of the rotor.

In the driving state 2, as shown in fig. 17, the three hall sensor output states are ha=l, hb=l, and hc=h; the W phase has no current passing therethrough, so it is hidden in the figure, and the current flows in from U1, flows out from U2, flows in V2, and flows out from V1. Generating magnetic poles and strength as shown in fig. 17, wherein a stator south pole is combined between the armature teeth 1 and 2 to push a rotor magnetic pole south pole S1 to rotate anticlockwise, and a north pole is combined between the armature teeth 4 and 5 to also attract the rotor magnetic pole south pole S1 to rotate anticlockwise; the north poles between the armature teeth 4 and 5 also push the rotor magnetic pole north pole N1 to rotate anticlockwise, and the south poles synthesized between the armature teeth 7 and 8 of the stator also attract the rotor magnetic pole north pole N1 to rotate anticlockwise; the south pole between the armature teeth 7 and 8 also pushes the south pole S2 on the rotor to rotate anticlockwise, and the north pole is combined between the armature teeth 10 and 11 and also attracts the south pole S2 of the rotor to rotate anticlockwise; the north poles between the armature teeth 10 and 11 also push the rotor magnetic pole north pole N2 to rotate anticlockwise, and the south poles synthesized between the armature teeth 1 and 2 of the stator also attract the rotor magnetic pole north pole N2 to rotate anticlockwise; this together constitutes a counter-clockwise rotation of the rotor.

In the driving state 3, as shown in fig. 18, the three hall sensor output states are ha=h, hb=l, and hc=h; since the V phase does not pass current, the current is hidden in the figure, and the current flows in from U1, flows out from U2, flows in W2, and flows out from W1. Generating magnetic poles and strength as shown in fig. 18, wherein a stator south pole is combined between the armature teeth 2 and 3 to push a rotor magnetic pole south pole S1 to rotate anticlockwise, and a north pole is combined between the armature teeth 5 and 6 to also attract the rotor magnetic pole south pole S1 to rotate anticlockwise; the north poles between the armature teeth 5 and 6 also push the rotor magnetic pole north pole N1 to rotate anticlockwise, and the south poles synthesized between the armature teeth 8 and 9 of the stator also attract the rotor magnetic pole north pole N1 to rotate anticlockwise; the south pole between the armature teeth 8 and 9 also pushes the south pole S2 on the rotor to rotate anticlockwise, and the north pole is combined between the armature teeth 11 and 12 and also attracts the south pole S2 of the rotor to rotate anticlockwise; the north poles between the armature teeth 11, 12 also push the rotor magnetic pole north pole N2 to rotate anticlockwise, and the south poles synthesized between the armature teeth 2,3 also attract the rotor magnetic pole north pole N2 to rotate anticlockwise; this together constitutes a counter-clockwise rotation of the rotor.

In the driving state 4, as shown in fig. 19, the three hall sensor output states are ha=h, hb=l, and hc=l; since the U phase does not pass through the current, the current is hidden in the figure, and the current flows in from V1, flows out from V2, flows in from W2, and flows out from W1. Generating the magnetic poles and strength shown in fig. 19, wherein the south poles of the stator are combined between the armature teeth 3 and 4 to push the south pole S1 of the rotor to rotate anticlockwise, and the north poles are combined between the armature teeth 6 and 7 to also attract the south pole S1 of the rotor to rotate anticlockwise; the north poles between the armature teeth 6 and 7 also push the rotor magnetic pole north pole N1 to rotate anticlockwise, and the south poles combined between the armature teeth 9 and 10 of the stator also attract the rotor magnetic pole north pole N1 to rotate anticlockwise; the south poles between the armature teeth 9, 10 also push the south pole S2 on the rotor to rotate anticlockwise, and the north pole is combined between the armature teeth 12,1 and also attracts the south pole S2 of the rotor to rotate anticlockwise; the north poles between the armature teeth 12,1 also push the rotor magnetic pole north pole N2 to rotate anticlockwise, and the south poles synthesized between the armature teeth 3,4 of the stator also attract the rotor magnetic pole north pole N2 to rotate anticlockwise; this together constitutes a counter-clockwise rotation of the rotor.

In the driving state 5, as shown in fig. 20, the three hall sensor output states are ha=h, hb=h, and hc=l: the w phase has no current passing through it, so it is hidden in the figure, the current flows in from V1, V2 flows out and into U2, and out through U1. Generating the magnetic poles and strength shown in fig. 20, wherein the south poles of the stator are combined between the armature teeth 4 and 5 to push the south pole S1 of the rotor to rotate anticlockwise, and the north poles are combined between the armature teeth 7 and 8 to also attract the south pole S1 of the rotor to rotate anticlockwise; the north poles between the armature teeth 7 and 8 also push the rotor magnetic pole north pole N1 to rotate anticlockwise, and the south poles combined between the armature teeth 10 and 11 of the stator also attract the rotor magnetic pole north pole N1 to rotate anticlockwise; the south poles between the armature teeth 10 and 11 also push the south pole S2 on the rotor to rotate anticlockwise, and the north pole is combined between the armature teeth 1 and 2 and also attracts the south pole S2 of the rotor to rotate anticlockwise; the north poles between the armature teeth 1 and 2 also push the rotor magnetic pole north pole N2 to rotate anticlockwise, and the south poles synthesized between the armature teeth 4 and 5 of the stator also attract the rotor magnetic pole north pole N2 to rotate anticlockwise; this together constitutes a counter-clockwise rotation of the rotor.

In the driving state 6, as shown in fig. 21, the three hall sensor output states are ha=l, hb=h, and hc=l; the V phase has no current passing therethrough, so it is hidden in the figure, and the current flows in from W1, flows out from W2 into U2, and flows out from U1. Generating the magnetic poles and strength shown in fig. 21, wherein the south poles of the stator are combined between the armature teeth 5 and 6 to push the south pole S1 of the rotor to rotate anticlockwise, and the north poles are combined between the armature teeth 8 and 9 to also attract the south pole S1 of the rotor to rotate anticlockwise; the north poles between the armature teeth 8 and 9 also push the rotor magnetic pole north pole N1 to rotate anticlockwise, and the south poles combined between the armature teeth 11 and 12 of the stator also attract the rotor magnetic pole north pole N1 to rotate anticlockwise; the south poles between the armature teeth 11, 12 also push the south pole S2 on the rotor to rotate anticlockwise, the north pole is combined between the armature teeth 2,3, and the south pole S2 of the rotor is also attracted to rotate anticlockwise; the north poles between the armature teeth 2 and 3 also push the rotor magnetic pole north pole N2 to rotate anticlockwise, and the south poles synthesized between the armature teeth 5 and 6 of the stator also attract the rotor magnetic pole north pole N2 to rotate anticlockwise; this together constitutes a counter-clockwise rotation of the rotor.

Through the driving of the permanent magnets on the rotor in the 6 driving states, the position of the permanent magnet S2 on the rotor is rotated to the position of S1 in the driving state 1, the driving of the electric angle is completed once, and the process is repeated later, so that the rotation of the motor rotor is realized. The rotation speed of the motor rotor is adjusted by the driver.

The invention provides a winding mode of connecting each phase winding of a three-phase permanent magnet motor by radial magnetic field triangle, drives a motor rotor provided with a permanent magnet under each phase condition when three-phase alternating current is input to each phase winding, and drives the motor rotor as a high-efficiency brushless motor through a brushless motor driver, thereby improving the conversion efficiency of the three-phase alternating current to realize electric energy and mechanical energy, meeting corresponding industrial application and having great significance.

It will be evident to those skilled in the art that the present invention includes but is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned. The permanent magnets on the rotor have many different structural shapes and manufacturing modes, such as ring magnetizing, surface magnetic sheet pasting, permanent magnet inserting in the rotor body, etc., and the permanent magnets are regarded as motors with the same radial magnetic field mode as long as the magnetic force lines of the permanent magnets are perpendicular to the motor rotating shaft rather than parallel. It is noted that, in general, for the convenience of production, three-phase windings are manufactured in the same manner with less errors, and for the winding of one phase winding in the opposite direction to the other two sets of windings (as shown by the arrow in fig. 22, the winding direction is opposite to the other two sets of windings), the winding manner of the motor is formed by only connecting the starting end and the ending end of the phase winding in a switching manner, and is not essentially different (for the case of driving the a phase at 30 degrees, the V1 originally connected to the B phase is changed to the V2, and the V2 originally connected to the C phase is changed to the V1, and fig. 23 and 5 constitute the same stator driving magnetic field), that is, the starting end and the ending end of the phase winding are connected in the same manner as above, and the motor has the same electric driving characteristics, which are regarded as the invention.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims (7)

1. The radial magnetic field triangle connection three-phase permanent magnet motor comprises a motor stator and a permanent magnet rotor, and is characterized in that: the motor stator of the radial magnetic field triangle-connected three-phase permanent magnet motor is formed by superposing silicon steel sheets, the inside of which is cylindrical and is provided with armature grooves for winding wires and armature teeth, magnetic force lines generated by the stator are perpendicular to a motor rotating shaft, three-phase stator windings are wound between the armature teeth in a mode of winding stator coils around two armature teeth by crossing three armature grooves, and a radial magnetic field is generated during power-on driving; the cylindrical rotor is provided with permanent magnets with magnetic force lines perpendicular to a motor rotating shaft in the radial direction of a rotor cylinder, the magnetic force lines are distributed in the radial direction, the magnetic poles of the permanent magnets are adjacently arranged in the south and north poles, and each south pole and each north pole on the rotor are driven by the repulsive force and attractive force of a magnetic field generated by a stator coil at the same time when the rotor is electrified and driven; the three-phase windings are connected by adopting a triangle, and when the three-phase winding is applied to three-phase alternating current, the input ends of the three-phase stator windings are respectively connected with three phase lines of the three-phase alternating current; when the three-phase stator winding is applied to a permanent magnet brushless motor, the input ends of the three-phase stator winding are respectively connected with three output ends of a brushless motor driver.

2. The radial field delta connection three-phase permanent magnet machine of claim 1, wherein: the winding mode of the same phase winding on the armature teeth of the stator formed by superposition of the silicon steel sheets is to wind around two armature teeth by crossing three armature grooves, the winding directions of two adjacent coils of the same phase winding are opposite, and when the armature grooves of the centers of the two adjacent coils are not counted, the centers of the two coils are separated by two armature grooves; the winding mode of the three-phase windings is the same; adjacent windings of adjacent phases are placed with adjacent winding edges in the same armature slot; after the three-phase winding is completed, connecting the starting end of one phase winding with the tail end of the winding of the adjacent phase, and connecting the starting end of the one phase winding with the tail end of the winding of the adjacent phase to form three input ends of the winding according to the three input ends of the three phase winding so as to form the traditional triangle connection; when one phase winding of the three-phase winding is opposite to the other two phases winding, the starting end and the ending end of the phase winding are exchanged and connected according to the method to form the same electrical characteristic.

3. The radial field delta connection three-phase permanent magnet machine of claim 1, wherein: the magnetic force lines of the permanent magnets on the cylindrical rotor are perpendicular to the rotating shaft of the motor and are distributed in the radial direction, the magnetic poles of the permanent magnets on the rotor in the outer diameter direction of the rotor are adjacently arranged in the south pole and the north pole, the permanent magnets can be magnetized in the outer diameter direction by using magnetic rings, and the permanent magnets can also be arranged on the rotor body of the cylindrical rotor.

4. The radial field delta connection three-phase permanent magnet machine of claim 1, wherein: the relationship between the number of magnetic poles of the permanent magnet rotor of the radial magnetic field triangle-connected three-phase permanent magnet motor in the outer diameter direction and the number of armature slots of the stator is: the number of stator armature slots is equal to the number of the sum of the north and south poles of the permanent magnet rotor in the outer radial direction multiplied by 3.

5. The radial field delta connection three-phase permanent magnet machine of claim 1, wherein: when the motor is applied to three-phase alternating current, the input ends of three-phase windings on the stator are respectively connected to three phase wires of the three-phase alternating current, the phase difference of each phase of the three-phase alternating current is 120 degrees, and the motor rotor is driven to rotate by the three-phase alternating current.

6. The radial field delta connection three-phase permanent magnet machine of claim 1, wherein: when the motor is applied to a permanent magnet brushless motor, the input ends of three-phase windings on a stator are respectively connected with three corresponding output ends of a brushless motor driver, and the brushless motor driver with six output driving states drives a motor rotor to rotate.

7. The radial field delta connection three-phase permanent magnet machine of claim 1, wherein: when the motor rotor is applied to three-phase alternating current, the rotation speed of the motor rotor is regulated by a three-phase alternating current frequency converter which can change the output frequency and has 120-degree phase difference of each phase, and three phase lines output by the three-phase alternating current frequency converter are respectively connected to three input ends of a three-phase winding on a stator.