CN102170211A - Variable excitation permanent magnet synchronous motor - Google Patents
Variable excitation permanent magnet synchronous motor Download PDFInfo
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- CN102170211A CN102170211A CN 201110109156 CN201110109156A CN102170211A CN 102170211 A CN102170211 A CN 102170211A CN 201110109156 CN201110109156 CN 201110109156 CN 201110109156 A CN201110109156 A CN 201110109156A CN 102170211 A CN102170211 A CN 102170211A
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- rotor
- soft iron
- motor
- connecting rod
- permanent magnet
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Abstract
The invention discloses a variable excitation permanent magnet synchronous motor, which belongs to the technical field of motors. The variable excitation permanent magnet synchronous motor comprises a stator and a rotor arranged on a motor shaft, wherein the two sides of the rotor are provided with a set of flux-weakening regulation mechanism respectively; the flux-weakening regulation mechanism comprises soft iron plates which are arranged on the two sides of the rotor and coaxial with the rotor; a spring is arranged between the rotor and the soft iron plate; and connecting rod counterweight mechanisms are arranged corresponding to each soft iron plate. The variable excitation permanent magnet synchronous motor has the advantages of automatically and correspondingly regulating distances between the rotor and the soft iron plates along with the change of rotating speed, thereby changing a magnetic flux path, fulfilling the aim of controlling reduction in motor excitation intensity along with the increasing of the rotating speed and further increasing the highest running speed of the motor.
Description
Technical field
The present invention relates to a kind of motor, specifically is a kind of permanent magnet synchronous motor that can adjust excitation intensity according to rotating speed automatically.
Background technology
Permanent magnet synchronous motor is a kind of of synchronous motor, and its excitation field is produced by permanent magnet, has eliminated excitation loss, has advantages such as high power density, high efficiency and speed-regulating range width, is widely used in the servo and motion control field of high-performance.
Different with electric excitation synchronous motor, permanent magnet synchronous motor produces excitation field by permanent magnet, thereby magnetic field intensity is generally invariable.Concern according to the permanent magnet synchronous motor basic electromagnetic, motor rotation back-emf increases with rotating speed, and the rotation back-emf is near the power supply supply power voltage when the motor high-speed cruising, and current regulator is saturated, motor torque output performance rapid deterioration has limited motor speed and has further improved.
The weak magnetic control system technology of permanent magnet synchronous motor can overcome the above problems, promptly along with motor speed increases, and the corresponding reduction of control motor gas-gap magnetic field intensity, thus reduce the speed that the rotation back-emf increases.Thereby under the constant situation of supply voltage, improved the motor highest running speed.
Summary of the invention
The objective of the invention is traditional permagnetic synchronous motor structure is transformed, a kind of variable excitation permagnetic synchronous motor is provided.Along with rotor speed increases, under action of centrifugal force, rotor structure generation respective change causes that the motor excitation magnetic circuit changes, and excitation field intensity is corresponding to be weakened thereby cause.
The present invention realizes with following technical scheme: a kind of variable excitation permanent magnet synchronous motor, comprise stator and the rotor that is installed on the motor shaft, and the weak magnetic governor motion of a cover respectively is installed in the rotor both sides; Described weak magnetic governor motion comprises the soft iron dish that is installed in rotor both sides and rotor coaxial; Between rotor and soft iron dish spring is installed, corresponding each soft iron dish is equipped with the connecting rod balance weight mechanism, and described connecting rod balance weight mechanism is the support that has on motor shaft with the motor shaft one; Also comprise connecting rod, connecting rod is installed on the motor shaft by support and can is the center swing with the support; End at connecting rod is installed a counterweight, and the other end is installed a roller, and connecting rod is resisted against on the soft iron dish by roller.
Principle is: along with motor speed increases, and the corresponding reduction of motor excitation intensity; Motor speed reduces, the corresponding increase of excitation intensity.Thereby the excessive increase of armature back-emf improves the motor highest running speed when helping controlling high speed.Along with the increase of motor speed, the mechanical mechanism on the motor shaft drives the soft iron dish to the side shifting near rotor, has changed magnetic flux path, thereby has reduced magnetic flux.When rotating speed reduced, spring drove the soft iron dish to the side shifting away from rotor, the corresponding magnetic flux that increased.This magnetic flux has satisfied the needs of electric machine speed regulation with the rule of rotation speed change.
The invention has the beneficial effects as follows: for same motor, when low speed, excitation field is strong, the torque fan-out capability when having guaranteed low speed; During high speed, excitation field weakens, and has expanded the highest running speed of permagnetic synchronous motor.
Description of drawings
Below in conjunction with drawings and Examples the present invention is described in further detail.
Fig. 1 is a permagnetic synchronous motor structure diagram of the present invention.
Fig. 2 is the profile that support and motor shaft coupling part make progress at A.
1, motor shaft, 2, counterweight, 3, support, 4, connecting rod, 5, roller, 6, the soft iron dish, 7, spring, 8, permanent magnet, 9, rotor, 10, stator.
Embodiment
As shown in Figure 1, variable excitation permagnetic synchronous motor basic structure is similar with common permagnetic synchronous motor, and difference concentrates on the rotor.Comprise stator 10 and be installed in rotor 9 on the motor shaft 1, be installed in the coaxial soft iron dish 6 of rotor 9 both sides and rotor 9; Between rotor 9 and soft iron dish 6, spring 7 is installed; Corresponding each soft iron dish 6 is equipped with the connecting rod balance weight mechanism, and the connecting rod balance weight mechanism is included on the motor shaft 1 and support 3 motor shaft 1 one; Connecting rod 4 is connected with support 3 on being installed in motor shaft 1 by bearing.And can be the center swing with support 3; At an end of connecting rod 4 counterweight 2. other ends are installed a roller 5 is installed, connecting rod 4 is resisted against on the soft iron dish 6 by roller 5, install roller 5 in order to reduce and soft iron dish 6 between frictional resistance.
For stressed even, each soft iron dish 6 is installed down two groups of connecting rod balance weight mechanisms.
The course of work is as follows: when motor was static, soft iron dish 6 was to the side shifting away from rotor under the effect of spring 7 elastic force, and extruding connecting rod 4 drives counterweight and is adjacent to motor shaft 1; Along with motor speed increases, counterweight 2 moves to the direction away from motor shaft under action of centrifugal force, drivening rod 4 swings, and connecting rod 4 is by roller 5 extruding soft iron dishes 6, the compression spring makes the soft iron dish to the direction motion near rotor 9, balances each other up to spring force and connecting rod thrust.Because along with motor speed increases, 9 distances of soft iron dish 6 and rotor diminish, the corresponding reduction of motor gas-gap magnetic field intensity, thus reduce the speed that the rotation back-emf increases.Therefore under the constant situation of supply voltage, improved the motor highest running speed.
Because the magneto resistive ratio soft iron material magnetic resistance of air is a lot of greatly, so the distance of soft iron dish and rotor distance has just caused the variation of permanent magnet excitation magnetic circuit, the corresponding excitation intensity that changed.Concrete rule is as follows: motor speed is fast more, and the soft iron dish is near more apart from the rotor distance, and excitation field intensity is more little.Since along with motor speed increases, the corresponding reduction of motor gas-gap magnetic field intensity, thus reduce the speed that the rotation back-emf increases.Therefore under the constant situation of supply voltage, improved the motor highest running speed.Thereby solved weak magnetic control system problem from the angle of motor self structure.
Claims (3)
1. variable excitation permanent magnet synchronous motor comprises stator (10) and is installed in rotor (9) on the motor shaft (1), it is characterized in that: the weak magnetic governor motion of a cover respectively is installed in rotor (9) both sides; Described weak magnetic governor motion comprises and is installed in rotor (9) the both sides soft iron dish (6) coaxial with rotor (9), between rotor (9) and soft iron dish (6), spring (7) is installed, corresponding each soft iron dish (6) is equipped with the connecting rod balance weight mechanism, and described connecting rod balance weight mechanism comprises the support (3) with motor shaft (1) one; Also comprise connecting rod (4), it can be the center swing with support (3) also upward that connecting rod (4) is installed in motor shaft (1) by support (3); At an end of connecting rod (4) counterweight (2) is installed, the other end is installed a roller (5), and connecting rod (4) is resisted against on the soft iron dish (6) by roller (5).
2. variable excitation permanent magnet synchronous motor according to claim 1 is characterized in that: described connecting rod (4) is connected with support (3) on being installed in motor shaft (1) by bearing.
3. variable excitation permanent magnet synchronous motor according to claim 1 is characterized in that: each soft iron dish (6) is installed down two groups of connecting rod balance weight mechanisms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110109156XA CN102170211B (en) | 2011-04-22 | 2011-04-22 | Variable excitation permanent magnet synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110109156XA CN102170211B (en) | 2011-04-22 | 2011-04-22 | Variable excitation permanent magnet synchronous motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102170211A true CN102170211A (en) | 2011-08-31 |
| CN102170211B CN102170211B (en) | 2012-11-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110109156XA Active CN102170211B (en) | 2011-04-22 | 2011-04-22 | Variable excitation permanent magnet synchronous motor |
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| CN (1) | CN102170211B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103944312A (en) * | 2014-05-06 | 2014-07-23 | 华中科技大学 | Squirrel cage type motor allowing adjustment of air gap between stator and rotor |
| CN105720719A (en) * | 2015-10-26 | 2016-06-29 | 徐州工业职业技术学院 | Rotor structure of variable excitation permanent magnet synchronous motor |
| CN106026584A (en) * | 2016-06-15 | 2016-10-12 | 燕胜 | Permanent-magnet synchronous motor rotor |
| CN106100269A (en) * | 2016-06-15 | 2016-11-09 | 孙跃 | A kind of permanent-magnetic synchronous motor rotor |
| CN109842255A (en) * | 2017-11-27 | 2019-06-04 | 丰田自动车株式会社 | Rotating electric machine with variable magnetic flux mechanism |
| WO2024012697A1 (en) | 2022-07-15 | 2024-01-18 | Gkn Automotive Limited | Electric machine |
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| DE2529874A1 (en) * | 1975-07-04 | 1977-01-20 | Philips Patentverwaltung | GENERATOR FOR SINGLE- OR MULTI-PHASE AC VOLTAGE WITH PERMANENT MAGNETIC RUNNER |
| CN2183637Y (en) * | 1993-01-12 | 1994-11-23 | 徐德华 | Automatic voltage stabilizor for permanent generator |
| CN1472868A (en) * | 2002-07-31 | 2004-02-04 | ������������ʽ���� | Rotation motor and vehicle therewith |
| CN101510716A (en) * | 2008-02-15 | 2009-08-19 | 精工爱普生株式会社 | Fluid power generator |
| EP2197090A1 (en) * | 2008-12-15 | 2010-06-16 | Appliances Components Companies S.p.A. | Electric permanent magnet motor |
| US20100164422A1 (en) * | 2008-12-26 | 2010-07-01 | Hitachi, Ltd. | Variable magnetic flux electric rotary machine |
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2011
- 2011-04-22 CN CN201110109156XA patent/CN102170211B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2529874A1 (en) * | 1975-07-04 | 1977-01-20 | Philips Patentverwaltung | GENERATOR FOR SINGLE- OR MULTI-PHASE AC VOLTAGE WITH PERMANENT MAGNETIC RUNNER |
| CN2183637Y (en) * | 1993-01-12 | 1994-11-23 | 徐德华 | Automatic voltage stabilizor for permanent generator |
| CN1472868A (en) * | 2002-07-31 | 2004-02-04 | ������������ʽ���� | Rotation motor and vehicle therewith |
| CN101510716A (en) * | 2008-02-15 | 2009-08-19 | 精工爱普生株式会社 | Fluid power generator |
| EP2197090A1 (en) * | 2008-12-15 | 2010-06-16 | Appliances Components Companies S.p.A. | Electric permanent magnet motor |
| US20100164422A1 (en) * | 2008-12-26 | 2010-07-01 | Hitachi, Ltd. | Variable magnetic flux electric rotary machine |
| CN101795039A (en) * | 2008-12-26 | 2010-08-04 | 株式会社日立制作所 | Variable magnetic flux electric rotary machine |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103944312A (en) * | 2014-05-06 | 2014-07-23 | 华中科技大学 | Squirrel cage type motor allowing adjustment of air gap between stator and rotor |
| CN105720719A (en) * | 2015-10-26 | 2016-06-29 | 徐州工业职业技术学院 | Rotor structure of variable excitation permanent magnet synchronous motor |
| CN106026584A (en) * | 2016-06-15 | 2016-10-12 | 燕胜 | Permanent-magnet synchronous motor rotor |
| CN106100269A (en) * | 2016-06-15 | 2016-11-09 | 孙跃 | A kind of permanent-magnetic synchronous motor rotor |
| CN106026584B (en) * | 2016-06-15 | 2018-04-17 | 徐州市柯瑞斯电机制造有限公司 | permanent-magnet synchronous motor rotor |
| CN106100269B (en) * | 2016-06-15 | 2018-07-27 | 佛山市顺德区科雄达电机制造有限公司 | A kind of permanent-magnetic synchronous motor rotor |
| CN109842255A (en) * | 2017-11-27 | 2019-06-04 | 丰田自动车株式会社 | Rotating electric machine with variable magnetic flux mechanism |
| CN109842255B (en) * | 2017-11-27 | 2021-11-26 | 丰田自动车株式会社 | Rotating electric machine with flux variable mechanism |
| WO2024012697A1 (en) | 2022-07-15 | 2024-01-18 | Gkn Automotive Limited | Electric machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102170211B (en) | 2012-11-21 |
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Application publication date: 20110831 Assignee: Jiangsu Jiuxiang Automobile Appliance Group Co., Ltd. Assignor: Xuzhou Institute of Industry Technology Contract record no.: 2013320000120 Denomination of invention: Variable excitation permanent magnet synchronous motor Granted publication date: 20121121 License type: Exclusive License Record date: 20130315 |
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