CN202231589U - Controllable excitation permanent magnet synchronous motor - Google Patents
Controllable excitation permanent magnet synchronous motor Download PDFInfo
- Publication number
- CN202231589U CN202231589U CN201120376417XU CN201120376417U CN202231589U CN 202231589 U CN202231589 U CN 202231589U CN 201120376417X U CN201120376417X U CN 201120376417XU CN 201120376417 U CN201120376417 U CN 201120376417U CN 202231589 U CN202231589 U CN 202231589U
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- Prior art keywords
- permanent magnet
- motor
- permanent magnets
- permanent
- speed
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- 230000001360 synchronised effect Effects 0.000 title claims abstract description 20
- 230000005284 excitation Effects 0.000 title claims abstract description 16
- 229910017709 Ni Co Inorganic materials 0.000 claims abstract description 27
- 229910003267 Ni-Co Inorganic materials 0.000 claims abstract description 27
- 229910003262 Ni‐Co Inorganic materials 0.000 claims abstract description 27
- 229910001172 neodymium magnet Inorganic materials 0.000 claims abstract description 23
- 238000004804 winding Methods 0.000 claims abstract description 7
- 230000005415 magnetization Effects 0.000 abstract description 13
- 230000004907 flux Effects 0.000 abstract description 9
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 10
- 230000000694 effects Effects 0.000 description 3
- 230000005389 magnetism Effects 0.000 description 3
- 230000005347 demagnetization Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- NPXOKRUENSOPAO-UHFFFAOYSA-N Raney nickel Chemical compound [Al].[Ni] NPXOKRUENSOPAO-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
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- Permanent Magnet Type Synchronous Machine (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
A kind of controllable excitation permanent magnet synchronous motor, including motor shaft, rotor core, stator core and stator winding, tangential magnetic circuit direction is equipped with multiple pairs of set of permanent magnets in rotor core, set of permanent magnets is made of Al-Ni-Co permanent magnet and Nd-Fe-B permanent magnet, and every group of set of permanent magnets is that parallel to each other or reverse phase is parallel with the pole orientation of adjacent set of permanent magnets. When carrying out weak magnetic control, only it need to can change permanent magnet power in the controllable current impulse of d-axis direction one amplitude of application and direction, to achieve the purpose that adjust air-gap field intensity according to revolving speed, reduce weak magnetoelectricity stream loss. When motor needs high-speed cruising, by applying the controllable direct-axis current vector of an amplitude
Change the intensity of magnetization and the direction of magnetization of rotor Al-Ni-Co permanent magnet, reaches the total magnetic flux in air gap and increase with revolving speed and excitation strength reduction to widen the speed adjustable range of motor improves motor highest running speed.
Description
Technical field
The utility model relates to a kind of motor, especially a kind of controlled excitation permagnetic synchronous motor that is applicable in the industrial and mineral production.
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.Traditional permagnetic synchronous motor mostly adopts vector control strategy to carry out weak magnetic control system, weakens permanent magnetic field through control direct-axis current vector
.During weak-magnetic speed-regulating, if the stator total current is limited, so total output torque will descend, the load capacity variation of motor.
Summary of the invention
The purpose of the utility model overcomes the weak point in the prior art, and a kind of simple in structure, speed-regulating range width, the fast controlled excitation permagnetic synchronous motor of the speed of service are provided
For realizing above-mentioned purpose; The controlled excitation permagnetic synchronous motor of the utility model comprises motor shaft, rotor core, stator core and stator winding, and tangential magnetic circuit direction is provided with a plurality of paired set of permanent magnets in the described rotor core; Described set of permanent magnets is made up of Al-Ni-Co permanent magnet and Nd-Fe-B permanent magnet; Al-Ni-Co permanent magnet is near the rotor core edge, and described Nd-Fe-B permanent magnet is near the rotor core center, and Al-Ni-Co permanent magnet and Nd-Fe-B permanent magnet are provided with at a distance from the magnetic magnetic bridge between the two; The pole orientation of every group of set of permanent magnets and adjacent set of permanent magnets is parallel to each other or anti-phase is parallel; Described a plurality of paired set of permanent magnets is 4～6 groups.
Beneficial effect: owing to adopted technique scheme; When carrying out weak magnetic control system; Apply direct-axis current vector
and remove to weaken permanent magnetic field quarter when not required; Only need apply an amplitude and the controlled current impulse of direction just can change the permanent magnet power in the d-axis direction; And the magnetization situation after keeping changing is constant, adjusts air-gap field intensity, reduces the purpose that weak magnetoelectricity flows loss thereby reach according to rotating speed.When motor needs high-speed cruising; Through applying the magnetization and the direction of magnetization that the controlled direct-axis current vector of an amplitude
changes the rotor Al-Ni-Co permanent magnet; Make the total magnetic flux in the air gap reach excitation intensity reduction with the rotating speed increase; Thereby widen the speed adjustable range of motor, improved the motor highest running speed.It is simple in structure, speed-regulating range width, and the speed of service is fast, has practicality widely.
Description of drawings
Fig. 1 is the controlled excitation permagnetic synchronous motor structural representation of the utility model.
Among the figure: 1-motor shaft, 2-rotor core, 3-Al-Ni-Co permanent magnet, 4-Nd-Fe-B permanent magnet, 5-stator core, 6-stator winding, 7-air gap.
Embodiment
Be further described below in conjunction with the enforcement of accompanying drawing the utility model:
As shown in Figure 1; With 24 grooves, 4 pole permanent-magnet synchronous machines is example; The controlled excitation permagnetic synchronous motor of the utility model mainly is made up of motor shaft 1, rotor core 2, Al-Ni-Co permanent magnet 3, Nd-Fe-B permanent magnet 4, stator core 5 and stator winding 6; Wherein tangential magnetic circuit direction is provided with 4～6 paired set of permanent magnets in the rotor core 2; Set of permanent magnets is made up of Al-Ni-Co permanent magnet 3 and Nd-Fe-B permanent magnet 4, and Al-Ni-Co permanent magnet 3 is near rotor core 2 edges, and Nd-Fe-B permanent magnet 4 is near rotor core 2 centers; The pole orientation of every group of set of permanent magnets and adjacent set of permanent magnets is parallel to each other or anti-phase is parallel, and Al-Ni-Co permanent magnet 3 is provided with at a distance from the magnetic magnetic bridge with Nd-Fe-B permanent magnet 4 between the two.The basic structure of the utility model is similar with common permagnetic synchronous motor, has air gap 7 between rotor core 2 and the stator core 5, and difference concentrates on the rotor; Rotor is made up of motor shaft 1, rotor core 2, Al-Ni-Co permanent magnet 3, Nd-Fe-B permanent magnet 4; Rotor is the tangential magnetic structure; Be that described Al-Ni-Co permanent magnet 3 is all placed along the axle tangential with Nd-Fe-B permanent magnet 4, motor stator structure is identical with traditional permagnetic synchronous motor; The cross section of Al-Ni-Co permanent magnet 3 and Nd-Fe-B permanent magnet 4 is rectangle, and two kinds of permanent magnets occur in pairs, and the direction of magnetization is parallel to each other; Al-Ni-Co permanent magnet 3 is near the rotor core edge, and Nd-Fe-B permanent magnet 4 is near the rotor core center; The Nd-Fe-B permanent magnet 4 that place the tangential is 4, and the pre-magnetizing direction of selected permanent magnet should be consistent with the direction that marked among Fig. 1, after magnetizing again on request in the embedding groove separately; Al-Ni-Co permanent magnet 3 also is 4, and its positive and negative both direction is to require to magnetize or degaussing according to speed regulating control during the motor operation.In the low cruise district, Al-Ni-Co permanent magnet 3 should be identical with Nd-Fe-B permanent magnet 4 direction of magnetizations, and the motor gas-gap magnetic flux is maximum, and motor is in the speed regulation by constant torque service area.In the high-speed cruising district; When needing weak magnetic to adjust; Only need on p-m rotor d-axis direction, applying an amplitude and the controlled current impulse of direction through the threephase stator winding; Just can change the working point that the aluminium nickel of placing the very low tangential of coercive force bores the magnetization situation of permanent magnet 3 and changes its demagnetization recovery straight line, thereby change the air-gap field power indirectly, and keep adjusted magnetization situation constant subsequently.
Operation principle: the Al-Ni-Co permanent magnet bulk properties is that residual flux density is higher but coercive force is very low; Can adjust the size of the controllable flux of motor effectively; Can adjust the weak magnetic scope of motor effectively; The Nd-Fe-B permanent magnetic bulk properties is that residual flux density and coercive force are all very high, and motor permanent magnetism master air-gap field is mainly by its generation.Apply the controlled direct-axis current vector of an amplitude
through threephase stator winding short time on rotor d-axis direction; After this direct-axis current vector
d-axis armature reaction MMF effect that pulse produced; Will change the magnetization power and the direction of magnetization of Al-Ni-Co permanent magnet, the working point that Al-Ni-Co permanent magnet demagnetization simultaneously recovers straight line also changes.When the direction of magnetization of Al-Ni-Co permanent magnet and Nd-Fe-B permanent magnet was consistent, Al-Ni-Co permanent magnet was known from experience and is played the magnetic flux that Nd-Fe-B permanent magnet is produced and pushes stator core to, and the effect that the permanent magnetism main field is strengthened to some extent; When the direction of magnetization of Al-Ni-Co permanent magnet and Nd-Fe-B permanent magnet is opposite; Variation along with magnetic reversal intensity; Al-Ni-Co permanent magnet also changes the magnetic flux that Nd-Fe-B permanent magnet produces in the quantity of rotor internal bypass thereupon, plays the effect that the permanent magnetism main flux is weakened.
Claims (2)
1. controlled excitation permagnetic synchronous motor; Comprise motor shaft (1), rotor core (2), stator core (5) and stator winding (6); It is characterized in that: the interior tangential of described rotor core (2) magnetic circuit direction is provided with a plurality of paired set of permanent magnets; Described set of permanent magnets is made up of Al-Ni-Co permanent magnet (3) and Nd-Fe-B permanent magnet (4); Al-Ni-Co permanent magnet (3) is near rotor core (2) edge, and described Nd-Fe-B permanent magnet (4) is near rotor core (2) center, and Al-Ni-Co permanent magnet (3) and Nd-Fe-B permanent magnet (4) are provided with at a distance from the magnetic magnetic bridge between the two; The pole orientation of every group of set of permanent magnets and adjacent set of permanent magnets is parallel to each other or anti-phase is parallel.
2. controlled excitation permagnetic synchronous motor according to claim 1 is characterized in that: described a plurality of paired set of permanent magnets are 4～6 groups.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120376417XU CN202231589U (en) | 2011-09-29 | 2011-09-29 | Controllable excitation permanent magnet synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120376417XU CN202231589U (en) | 2011-09-29 | 2011-09-29 | Controllable excitation permanent magnet synchronous motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202231589U true CN202231589U (en) | 2012-05-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120376417XU Expired - Fee Related CN202231589U (en) | 2011-09-29 | 2011-09-29 | Controllable excitation permanent magnet synchronous motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202231589U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103354395A (en) * | 2013-07-15 | 2013-10-16 | 周凌燕 | Bipolar-power weak magnetic resistance power generation device |
| CN106208450A (en) * | 2016-08-01 | 2016-12-07 | 哈尔滨工业大学 | Increase the adjustable flux electric machine of magnetic-type built-in tangential |
| CN109347229A (en) * | 2018-11-14 | 2019-02-15 | 珠海格力电器股份有限公司 | motor rotor structure and permanent magnet motor |
| CN110784082A (en) * | 2018-07-30 | 2020-02-11 | 本田技研工业株式会社 | Rotating electrical machine and vehicle equipped with rotating electrical machine |
| CN110838780A (en) * | 2019-11-26 | 2020-02-25 | 江苏大学 | Quadrature-direct axis magnetic resistance controllable permanent magnet brushless motor |
| US11450463B2 (en) | 2018-02-02 | 2022-09-20 | Robotiq Inc. | Programmable permanent magnet actuator and a magnetic field generation apparatus and method |
-
2011
- 2011-09-29 CN CN201120376417XU patent/CN202231589U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103354395A (en) * | 2013-07-15 | 2013-10-16 | 周凌燕 | Bipolar-power weak magnetic resistance power generation device |
| CN106208450A (en) * | 2016-08-01 | 2016-12-07 | 哈尔滨工业大学 | Increase the adjustable flux electric machine of magnetic-type built-in tangential |
| US11450463B2 (en) | 2018-02-02 | 2022-09-20 | Robotiq Inc. | Programmable permanent magnet actuator and a magnetic field generation apparatus and method |
| CN110784082A (en) * | 2018-07-30 | 2020-02-11 | 本田技研工业株式会社 | Rotating electrical machine and vehicle equipped with rotating electrical machine |
| CN110784082B (en) * | 2018-07-30 | 2021-07-06 | 本田技研工业株式会社 | Rotating electrical machine and vehicle equipped with rotating electrical machine |
| CN109347229A (en) * | 2018-11-14 | 2019-02-15 | 珠海格力电器股份有限公司 | motor rotor structure and permanent magnet motor |
| WO2020098339A1 (en) * | 2018-11-14 | 2020-05-22 | 珠海格力电器股份有限公司 | Motor rotor structure and permanent magnet motor |
| US11336135B2 (en) | 2018-11-14 | 2022-05-17 | Gree Electric Appliances, Inc. Of Zhuhai | Motor rotor structure and permanent magnet motor |
| CN109347229B (en) * | 2018-11-14 | 2024-05-14 | 珠海格力电器股份有限公司 | Motor rotor structure and permanent magnet motor |
| CN110838780A (en) * | 2019-11-26 | 2020-02-25 | 江苏大学 | Quadrature-direct axis magnetic resistance controllable permanent magnet brushless motor |
| CN110838780B (en) * | 2019-11-26 | 2021-05-25 | 江苏大学 | Quadrature-direct axis magnetic resistance controllable permanent magnet brushless motor |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120523 Termination date: 20130929 |