CN112511072A - Electronic motor and electrical equipment - Google Patents
Electronic motor and electrical equipment Download PDFInfo
- Publication number
- CN112511072A CN112511072A CN202011291637.2A CN202011291637A CN112511072A CN 112511072 A CN112511072 A CN 112511072A CN 202011291637 A CN202011291637 A CN 202011291637A CN 112511072 A CN112511072 A CN 112511072A
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- motor
- electronic switch
- electronic
- conducting
- bars
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using DC to AC converters or inverters
- H02P27/08—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using DC to AC converters or inverters with pulse width modulation
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
The invention discloses an electronic motor and electrical equipment, the electronic motor includes: a motor winding including a plurality of conductive bars, one end of the plurality of conductive bars being interconnected; and the switch circuits are connected with the other ends of the conducting bars in a one-to-one mode. The invention can control the current magnitude and direction of the corresponding conducting bar by controlling the operation of the switch circuit, thereby changing the magnetic pole number pairs of the motor, realizing seamless switching of the magnetic pole number pairs, realizing variable frequency speed regulation of the motor and meeting the application requirement of low speed and large torque. Meanwhile, the problems that the motor winding is complex to produce and the material consumption is large can be solved.
Description
Technical Field
The invention relates to the technical field of electronic motors, in particular to an electronic motor and electrical equipment.
Background
The existing mainstream speed regulation mode is frequency conversion speed regulation, and a frequency converter and an asynchronous motor have the following defects: the low-speed moment can only be equivalent to the moment under the rated rotating speed, and the application of low-speed large moment required in most occasions cannot be met. The motor winding is complex to produce and the material consumption is large.
Disclosure of Invention
The invention mainly aims to provide an electronic motor and electrical equipment, aiming at realizing the adjustable frequency of the motor and meeting the application requirement of low speed and large torque; and simultaneously, the problems of complex production and high material consumption of the motor winding are solved.
In order to achieve the above object, the present invention provides an electronic motor, including:
a motor winding including a plurality of conductive bars, one end of the plurality of conductive bars being interconnected;
and the switch circuits are connected with the other ends of the conducting bars in a one-to-one mode.
Optionally, the electronic motor further comprises:
the power supply is connected with the other ends of the conducting bars through the plurality of switch circuits, and the power supply is used for supplying power to the corresponding conducting bars when the switch circuits are switched on.
Optionally, each of the switch circuits includes a first upper bridge electronic switch and a first lower bridge electronic switch, and an input end of the first upper bridge electronic switch is connected to a positive electrode of the power supply; the output end of the first upper bridge electronic switch is interconnected with the input end of the first lower bridge electronic switch and the other end of the conducting bar; and the output end of the first lower bridge electronic switch is connected with the negative electrode of the power supply.
Optionally, the electronic motor further comprises:
the plurality of control ends of the main controller are respectively connected with the controlled ends of the first upper bridge electronic switch and the first lower bridge electronic switch; and the main controller is used for outputting PWM signals, controlling the first upper bridge electronic switch and the first lower bridge electronic switch to work, adjusting the voltage of the conducting bar so as to adjust the current size and direction of the conducting bar and change the number of pole pairs of the electronic motor.
Optionally, the main controller is configured to output a PWM signal, control the first upper bridge electronic switch and the first lower bridge electronic switch to operate, adjust the voltage of the conducting bar, adjust the current magnitude and direction of the conducting bar, and change the phase number of the electronic motor;
and/or the main controller is further used for outputting a PWM signal, controlling the first upper bridge electronic switch and the first lower bridge electronic switch to work, and adjusting the voltage of the conducting bar so as to adjust the current magnitude and direction of the conducting bar and adjust the frequency of the electronic motor.
Optionally, the first upper bridge electronic switch is one or a combination of a MOS transistor, an IGBT, and a triode;
and/or the first lower bridge electronic switch is one or a combination of a plurality of MOS (metal oxide semiconductor) tubes, IGBTs (insulated gate bipolar transistors) and triodes.
Optionally, the electronic motor further comprises a metal conductor, and one end of each of the plurality of conducting bars is interconnected through the metal conductor to realize short circuit.
Optionally, the electronic motor further comprises a PCB, and one end of the plurality of conductive bars is interconnected through the PCB to realize short circuit.
Optionally, the number of the motor windings is multiple, and the number of the power supply corresponds to the number of the motor windings;
each power supply supplies power to one motor winding;
when the electronic motor is provided with the metal conductors, one ends of the conducting bars in each motor winding are interconnected through one metal conductor to realize short circuit; the number of the metal conductors corresponds to that of the motor windings, and the metal conductors are mutually insulated;
when the electronic motor is provided with the PCB, one ends of a plurality of conducting bars in each motor winding are interconnected through one short-circuit area to realize short-circuit; the number of short-circuit areas on the PCB board corresponds to the number of motor windings, and the short-circuit areas are insulated from one another.
Optionally, the electronic motor further comprises:
and the conducting bars are arranged in the grooves of the stator core.
The invention also provides electrical equipment comprising the electronic motor.
The motor winding is provided with a plurality of conducting bars, one ends of the conducting bars are interconnected, and a plurality of switch circuits are arranged and are connected with the other ends of the conducting bars in a one-to-one mode. The invention can control the voltage of the corresponding conducting bar by outputting the PWM signal, thereby changing the current output to the conducting bar and the direction, further changing the magnetic pole pair number of the motor, realizing the seamless switching of the magnetic pole pair number, and further meeting the application requirement of low speed and large torque. Meanwhile, the problems that the motor winding is complex to produce and the material consumption is large can be solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic circuit diagram of an electronic motor according to an embodiment of the present invention;
fig. 2 is a schematic circuit diagram of an electronic motor according to another embodiment of the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 10 | Electric machine winding | 11 | Conducting |
| 20 | Switching circuit | Q11 | First upper bridge electronic switch |
| 30 | Power supply | Q21 | First lower bridge electronic switch |
| 40 | Main controller |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
The invention provides an electronic motor.
Referring to fig. 1, in an embodiment of the present invention, the electric motor includes:
a motor winding 10, said motor winding 10 comprising a plurality of conducting bars 11, one end of said plurality of conducting bars 11 being interconnected;
and a plurality of switch circuits 20, wherein the switch circuits 20 are connected to the other ends of the conductors 11 in a one-to-one manner.
The electronic motor further includes:
and the power supply 30 is connected with the other ends of the plurality of conducting bars 11 through the plurality of switch circuits 20, and the power supply 30 is used for supplying power to the corresponding conducting bars 11. The power supply 30 is configured to supply power to the motor winding to drive the motor rotor to work, and an output voltage of the power supply 30 may be set according to the motor, which is not limited herein.
The electronic motor further comprises a metal conductor, and one ends of the conducting bars 11 are interconnected through the metal conductor to realize short circuit.
The electronic motor further comprises a PCB, and one end of each conducting bar 11 is connected with the PCB in an interconnecting mode to achieve short circuit.
In this embodiment, the motor winding 10 is provided with a plurality of conducting bars 11, the conducting bars 11 are metal conducting bars, one ends of the metal conducting bars are all short-circuited through a metal conductor or a PCB, the other ends of the metal conducting bars are connected with the switch circuit 20, and the voltage regulation of the conducting bars 11 is realized through the PWM control of the switch circuit 20, so that the current direction of the conducting bars is controlled. The number of switching circuits 20 corresponds to the number of conductors 11. Wherein each bar is labeled 101, 102, … …, 10N, respectively. Each of the switching circuits is labeled 201, 202, … …, 20N, respectively.
In a further embodiment, each of the switch circuits 20 includes a first upper bridge electronic switch Q11 and a first lower bridge electronic switch Q21, an input terminal of the first upper bridge electronic switch Q11 is connected to the positive pole of the power supply 30; the output of the first upper bridge electronic switch Q11 is interconnected with the input of the first lower bridge electronic switch Q21 and the other end of the conductor bar 11; the output end of the first lower bridge electronic switch Q21 is connected with the negative pole of the power supply 30. The first upper bridge electronic switch Q11 is one or a combination of a MOS tube, an IGBT and a triode; and/or the first lower bridge electronic switch Q21 is one or a combination of MOS tube, IGBT and triode. In this embodiment, which electronic switch is used may be determined according to the power of the motor, for example, in a high-power motor, a MOS transistor, an IGBT, or the like may be used, and in a low-power motor, a triode or the like may be used.
In a further embodiment, the electronic motor further comprises:
a plurality of control ends of the main controller are respectively connected with the controlled ends of the first upper bridge electronic switch Q11 and the first lower bridge electronic switch Q21; and the main controller is used for outputting a PWM signal to control the first upper bridge electronic switch Q11 and the first lower bridge electronic switch Q21 to work so as to adjust the pole number pair of the electronic motor.
The main controller is used for outputting PWM signals to control the first upper bridge electronic switch Q11 and the first lower bridge electronic switch Q21 to work so as to adjust the phase number of the electronic motor.
In this embodiment, the main controller may be implemented by a microcontroller such as a single chip microcomputer, a DSP, or an FPGA, or may be implemented by a dedicated motor driving chip, and the main controller may be a central processing unit of an electrical device applied to an electronic motor, or may be a microprocessor dedicated to controlling the electronic motor. The main controller is connected with all parts of the whole electronic motor driving circuit board by various interfaces and lines, the electronic motor is controlled by running or executing stored software programs and/or modules and calling stored data, and the main controller can generate corresponding PWM control signals according to application requirements so as to control the electronic motor to work.
Referring to fig. 2, in an embodiment, the number of the motor windings 10 is multiple, and the number of the power supplies 30 corresponds to the number of the motor windings 10;
each power supply 30 supplies power to one motor winding 10;
when the electronic motor is provided with the metal conductors, one ends of the conducting bars in each motor winding are interconnected through one metal conductor to realize short circuit; the number of the metal conductors corresponds to the number of the motor windings, and the metal conductors are mutually insulated.
When the electronic motor is provided with the PCB, one end of each of the plurality of conducting bars in each of the motor windings 10 is interconnected through one of the short-circuit regions to realize a short-circuit; the number of short-circuit areas on the PCB board corresponds to the number of the motor windings 10, and the short-circuit areas are mutually insulated.
In this embodiment, the plurality of motor windings 11, 12, … 1M are supplied with power through the independent power supplies 31, 32, … 3M, which is beneficial to dispersing power density, improving heat dissipation of the motor, and improving working efficiency of the electronic motor. The number of switch circuits is also plural, and these are denoted by 21, 22, and … 2M, respectively.
On a PCB, different short circuit areas can be formed by spreading copper in different areas, and the plurality of short circuit areas are insulated through the insulating layer of the PCB. When a metal conductor is used, the plurality of metal conductors may be separated and connected by an insulator.
In one embodiment, the electronic motor further comprises:
and the winding coil is wound on the stator core.
The conducting bars are arranged in the grooves of the stator core, grooves are formed between the stator teeth and the stator teeth, and the conducting bars are arranged in the grooves.
The invention also provides electrical equipment comprising the electronic motor. The detailed structure of the electronic motor can refer to the above embodiments, and is not described herein; it can be understood that, because the electronic motor is used in the electrical apparatus of the present invention, the embodiment of the electrical apparatus of the present invention includes all technical solutions of all embodiments of the electronic motor, and the achieved technical effects are also completely the same, and are not described herein again.
The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. An electronic motor, characterized in that it comprises:
a motor winding including a plurality of conductive bars, one end of the plurality of conductive bars being interconnected;
and the switch circuits are connected with the other ends of the conducting bars in a one-to-one mode.
2. The electronic motor according to claim 1, further comprising:
and the power supply is connected with the other ends of the conducting bars through a plurality of switch circuits and used for supplying power to the corresponding conducting bars.
3. The electronic motor according to claim 2, wherein each of said switching circuits comprises a first upper bridge electronic switch and a first lower bridge electronic switch, an input terminal of said first upper bridge electronic switch being connected to a positive pole of said power supply; the output end of the first upper bridge electronic switch is interconnected with the input end of the first lower bridge electronic switch and the other end of the conducting bar; and the output end of the first lower bridge electronic switch is connected with the negative electrode of the power supply.
4. The electronic motor according to claim 3, further comprising:
the plurality of control ends of the main controller are respectively connected with the controlled ends of the first upper bridge electronic switch and the first lower bridge electronic switch; and the main controller is used for outputting PWM signals, controlling the first upper bridge electronic switch and the first lower bridge electronic switch to work, adjusting the voltage of the conducting bar so as to adjust the current size and direction of the conducting bar and change the number of pole pairs of the electronic motor.
5. The electronic motor according to claim 4, wherein the main controller is further configured to output a PWM signal, control the first upper bridge electronic switch and the first lower bridge electronic switch to operate, adjust the voltage of the conducting bar, adjust the current magnitude and direction of the conducting bar, and change the number of phases of the electronic motor;
and/or the main controller is further used for outputting a PWM signal, controlling the first upper bridge electronic switch and the first lower bridge electronic switch to work, and adjusting the voltage of the conducting bar so as to adjust the current magnitude and direction of the conducting bar and adjust the frequency of the electronic motor.
6. The electronic motor according to claim 3, wherein the first upper bridge electronic switch is one or more of MOS tube, IGBT and triode;
and/or the first lower bridge electronic switch is one or a combination of a plurality of MOS (metal oxide semiconductor) tubes, IGBTs (insulated gate bipolar transistors) and triodes.
7. The electronic motor according to claim 2, further comprising a metal conductor through which one ends of the plurality of conductive bars are interconnected to realize a short circuit;
and/or the PCB board, one end of a plurality of conducting bars is interconnected through the PCB board to realize short circuit.
8. The electric motor according to claim 7, wherein the number of the motor windings is plural, and the number of the power supply sources corresponds to the number of the motor windings;
each power supply supplies power to one motor winding;
when the electronic motor is provided with the metal conductors, one ends of the conducting bars in each motor winding are interconnected through one metal conductor to realize short circuit; the number of the metal conductors corresponds to that of the motor windings, and the metal conductors are mutually insulated;
when the electronic motor is provided with the PCB, one ends of a plurality of conducting bars in each motor winding are interconnected through one short-circuit area to realize short-circuit; the number of short-circuit areas on the PCB board corresponds to the number of motor windings, and the short-circuit areas are insulated from one another.
9. The electronic motor according to any one of claims 1 to 8, further comprising:
and the conducting bars are arranged in the grooves of the stator core.
10. An electrical apparatus, characterized in that it comprises an electric motor according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011291637.2A CN112511072A (en) | 2020-11-17 | 2020-11-17 | Electronic motor and electrical equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011291637.2A CN112511072A (en) | 2020-11-17 | 2020-11-17 | Electronic motor and electrical equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112511072A true CN112511072A (en) | 2021-03-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011291637.2A Pending CN112511072A (en) | 2020-11-17 | 2020-11-17 | Electronic motor and electrical equipment |
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| Country | Link |
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| CN (1) | CN112511072A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101212197A (en) * | 2006-12-27 | 2008-07-02 | 比亚迪股份有限公司 | AC motor system with variable number of pole pairs for electric automobile |
| US20140265994A1 (en) * | 2013-03-15 | 2014-09-18 | Hengchun Mao | Dynamically Reconfigurable Motor and Generator Systems |
| CN106233583A (en) * | 2014-04-22 | 2016-12-14 | 菲艾姆股份有限公司 | Motor |
| US20200067442A1 (en) * | 2017-01-13 | 2020-02-27 | Shenzhen Yunlin Electric Co., Ltd. | Electronic pole changing-based induction motor control system and control method thereof |
| CN111052553A (en) * | 2017-08-15 | 2020-04-21 | 鲲腾科技公司 | Motor system with multiple connecting bars |
| CN111133658A (en) * | 2017-08-30 | 2020-05-08 | 鲲腾科技公司 | Motor system and control method |
| CN111293847A (en) * | 2018-12-10 | 2020-06-16 | 常州威灵电机制造有限公司 | Rotor assemblies, motors and compressors |
-
2020
- 2020-11-17 CN CN202011291637.2A patent/CN112511072A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101212197A (en) * | 2006-12-27 | 2008-07-02 | 比亚迪股份有限公司 | AC motor system with variable number of pole pairs for electric automobile |
| US20140265994A1 (en) * | 2013-03-15 | 2014-09-18 | Hengchun Mao | Dynamically Reconfigurable Motor and Generator Systems |
| CN106233583A (en) * | 2014-04-22 | 2016-12-14 | 菲艾姆股份有限公司 | Motor |
| US20200067442A1 (en) * | 2017-01-13 | 2020-02-27 | Shenzhen Yunlin Electric Co., Ltd. | Electronic pole changing-based induction motor control system and control method thereof |
| CN111052553A (en) * | 2017-08-15 | 2020-04-21 | 鲲腾科技公司 | Motor system with multiple connecting bars |
| CN111095741A (en) * | 2017-08-15 | 2020-05-01 | 鲲腾科技公司 | Connecting bars for motor systems |
| CN111819782A (en) * | 2017-08-15 | 2020-10-23 | 鲲腾科技公司 | Motor system with distributed winding structure |
| CN111133658A (en) * | 2017-08-30 | 2020-05-08 | 鲲腾科技公司 | Motor system and control method |
| CN111293847A (en) * | 2018-12-10 | 2020-06-16 | 常州威灵电机制造有限公司 | Rotor assemblies, motors and compressors |
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Application publication date: 20210316 |
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| RJ01 | Rejection of invention patent application after publication |