CN102244446A - Permanent magnet synchronism motor (PMSM) - Google Patents
Permanent magnet synchronism motor (PMSM) Download PDFInfo
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- CN102244446A CN102244446A CN2010101678606A CN201010167860A CN102244446A CN 102244446 A CN102244446 A CN 102244446A CN 2010101678606 A CN2010101678606 A CN 2010101678606A CN 201010167860 A CN201010167860 A CN 201010167860A CN 102244446 A CN102244446 A CN 102244446A
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- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
The invention, which relates to the motor technology field, aims at providing a permanent magnet synchronism motor (PMSM) which can be used to effectively reduce noises, reduce torque ripples and raise operation stability. The PMSM, which adopts a centralized winding subsection stator core structure, is characterized in that: circles in which a tooth arc of the subsection stator blocks and a stator outer arc are located are non-concentric circles; several segments of uniform distribution arcs form a whole inner bore of the stator core; an air gap width between tooth tips of two stator tooth ends and a rotor is (0.5-1) delta, wherein the delta is the air gap width between a central part of the stator tooth arc and the rotor; a transition part from the tooth tips of the two stator tooth ends to the central part of the stator tooth arc is smooth arc-shaped transition; an axial directional external surface of the rotor core can be a smooth surface. In the invention, through an improvement of the stator, a processing technology of the required rotor, especially the embedded magnetic steel rotor, can be greatly simplified.
Description
Technical field
The present invention relates to technical field of motors, particularly a kind of permagnetic synchronous motor that adopts centralized winding stator.
Background technology
Permagnetic synchronous motor commonly used now, its stator structure can be divided into distributed winding stator and centralized winding stator by winding configuration.Distributed winding stator and permanent-magnetic synchronous motor rotor structure match and more easily go out sinusoidal waveform, but distributed winding wire insertion technology complexity, the winding span is big, end size is big, motor length is longer usually.And the sectionalized stator core structure with centralized winding of current use, wire winding is simple, and winding overhang length is very short.For the bulk of motor being required the very harsh electric automobile and hybrid vehicle, centralized winding stator structure is more suitable.But centralized winding stator structure is difficult for producing the back emf waveform with sinuso sine protractor, is not easy controlling Design.In order to be easy to obtain having the back emf waveform of sinuso sine protractor, need to have the width of air gap that rule changes between stator inner surface and rotor outer surface, the permagnetic synchronous motor of the centralized winding stator structure of current use generally becomes rotor design the outer round surface rule to change, as the surface-mount type rotor, the Surface Mount magnet steel of segmentation makes that the rotor cylindrical is rough and uneven in surface; Embedded rotor then is the shape that the cylindrical of rotor core is designed to the variation of convex-concave rule.The frame mode that this rotor cooperates, though be easy to obtain sinusoidal waveform, but because rotor outer surface is rough, motor torque ripple is bigger, influence the traveling comfort of motor on the one hand, also can increase noise on the other hand, be unfavorable for the application of motor on electric automobile and hybrid vehicle.
Summary of the invention
The purpose of this invention is to provide a kind of effective reduction noise, reduce torque pulsation, improve the permagnetic synchronous motor of operation stability.
The present invention takes following technical scheme to realize: a kind of permagnetic synchronous motor, adopt the sectionalized stator core structure of centralized winding, it is characterized in that: the tooth portion circular arc of described sectionalized stator piece and stator outer arc place circle are non-concentric circles, whole stator core endoporus is made up of the uniform circular arc of plurality of sections, the crown at stator teeth two ends and the width of air gap between rotor are n δ, wherein δ is the centre of stator teeth circular arc and the width of air gap between rotor, and n is a multiple.
The present invention can also take following technical scheme: described stator teeth two ends crown is level and smooth circular arc transition to the centre of stator teeth circular arc.Described width of air gap multiple is got n=0.5～1.The rotor core axial external surface can be shiny surface.
The present invention compared with prior art has significant advantage and beneficial effect, is embodied in the following aspects:
1, the existing mode of obtaining the back emf waveform of sinuso sine protractor, be to obtain having the width of air gap that rule changes by the processing rotor outer surface, the present invention has saved the special processing to rotor by then having reached purpose by given shape processing stator, has simplified processing technology.
2, owing to do not need rotor is carried out special processing, promptly rotor surface is smooth cylinder, has therefore reduced torque pulsation greatly, reduced noise of motor, make motor even running better, thereby improve the service efficiency and the security performance of motor, increase the service life.
Description of drawings
Fig. 1 is a permagnetic synchronous motor structural representation before improving;
Fig. 2 is a permagnetic synchronous motor structural representation of the present invention;
Fig. 3 is a stator structure schematic diagram before improving;
Fig. 4 is a stator structure schematic diagram of the present invention;
Fig. 5 is the back emf waveform figure that permagnetic synchronous motor of the present invention produces.
Embodiment
Below in conjunction with accompanying drawing the embodiment of the invention is further described:
Shown in Fig. 1-4: the 1st, stator core, the 2nd, centralized winding, the 3rd, rotor core, the 4th, stator yoke portion circular arc, the 5th, stator teeth circular arc.
Fig. 1 is centralized winding stator of permagnetic synchronous motor and a rotor matching chart commonly used at present, and Fig. 2 is the structure chart that permagnetic synchronous motor of the present invention adopts the centralized winding stator after improving to cooperate with rotor.Centralized winding stator is the piece stator, become the development trend of permagnetic synchronous motor, current its endoporus of the stator core that uses is circular inner hole, be that each stator piece tooth portion circular arc 5 is all on same circle, and with stator yoke portion circular arc 4 be concentric circles, referring to Fig. 3,, all be δ if cooperate smooth 3 stator teeths of rotor core and the width of air gap between rotor then impartial everywhere.But this just is difficult to obtain the back emf waveform with sinuso sine protractor, therefore the rotor cylindrical is designed to the shape that rule changes.As the surface-mount type rotor, the Surface Mount magnet steel of segmentation makes that the rotor cylindrical is rough and uneven in surface; Embedded rotor then is the shape that the cylindrical of rotor core is designed to the variation of convex-concave rule.
In order to solve the motor fluctuation of service that causes owing to rotor surface is unsmooth, problems such as noise is big, the present invention improves stator profile, referring to Fig. 4, the distance of maintenance stator teeth center and rotor is constant still to be δ, and the width of air gap of two ends crown and rotor increases (0.5～1) δ, stator teeth two ends crown to the centre of stator teeth circular arc is level and smooth circular arc transition, the tooth portion circular arc 5 of sectionalized stator piece and stator yoke portion circular arc 4 places circle are non-concentric circles, and whole stator core endoporus is made up of the uniform circular arc of plurality of sections.In the present embodiment, δ is 1mm, thus the width of air gap at crown place to increase 0.8mm be that width is 1.8mm, each point is the rule variation to the width of air gap of rotor on the stator teeth circular arc 5.Stator after the improvement can be used with the rotor of shiny surface, has saved the special processing to rotor, has simplified processing technology, and this novel permagnetic synchronous motor can effectively reduce noise, reduces torque pulsation, improve operation stability.
The permagnetic synchronous motor that novel stator of the present invention cooperates with the shiny surface rotor, be easy to produce back emf waveform with better sinuso sine protractor, oscillogram referring to Fig. 5, this be stator with rotor between maximum air gap when 1.8 δ motor mutually, the line back emf waveform, the degree of agreement of itself and standard sine curve is about 0.98～1.05, is convenient to control, can obtain torque comparatively stably, motor when operation stationarity better, and noise of motor decreases and (reduces about 1～2dBA).
Claims (4)
1. permagnetic synchronous motor, adopt the sectionalized stator core structure of centralized winding, it is characterized in that: the tooth portion circular arc of described sectionalized stator piece and stator outer arc place circle are non-concentric circles, whole stator core endoporus is made up of the uniform circular arc of plurality of sections, the crown at stator teeth two ends and the width of air gap between rotor are n δ, wherein δ is the centre of stator teeth circular arc and the width of air gap between rotor, and n is a multiple.
2. a kind of permagnetic synchronous motor according to claim 1 is characterized in that: described stator teeth two ends crown is level and smooth circular arc transition to the centre of stator teeth circular arc.
3. a kind of permagnetic synchronous motor according to claim 2 is characterized in that: described width of air gap multiple is got n=0.5～1.
4. a kind of permagnetic synchronous motor according to claim 1 is characterized in that: the rotor core axial external surface can be shiny surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101678606A CN102244446A (en) | 2010-05-11 | 2010-05-11 | Permanent magnet synchronism motor (PMSM) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101678606A CN102244446A (en) | 2010-05-11 | 2010-05-11 | Permanent magnet synchronism motor (PMSM) |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102244446A true CN102244446A (en) | 2011-11-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101678606A Pending CN102244446A (en) | 2010-05-11 | 2010-05-11 | Permanent magnet synchronism motor (PMSM) |
Country Status (1)
| Country | Link |
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| CN (1) | CN102244446A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105830319A (en) * | 2013-12-20 | 2016-08-03 | 法雷奥电机设备公司 | Motor Vehicle Engine Starter Having A Rotary Electric Machine With Perfected Salient Pole Inductor, And Corresponding Pole Shoe |
| CN106849406A (en) * | 2017-03-15 | 2017-06-13 | 浙江永昌电气股份有限公司 | A kind of highly effective low noise stator punching |
| CN106972665A (en) * | 2017-04-17 | 2017-07-21 | 常州嘉轩数控设备有限公司 | A kind of high rotating speed permanent-magnetic synchronous motor rotor of high density used for electric vehicle |
| CN107251368A (en) * | 2014-12-03 | 2017-10-13 | 阿什伍兹自动化有限公司 | Radial flux motor |
| CN107994689A (en) * | 2018-01-18 | 2018-05-04 | 江苏环晟电机有限公司 | A kind of stator piece with direct current generator non-uniform gap |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1351776A (en) * | 1999-05-21 | 2002-05-29 | 松下电器产业株式会社 | Motor with permanent magnet |
| JP2005033941A (en) * | 2003-07-08 | 2005-02-03 | Toshiba Corp | Stator core for permanent magnet motor, and permanent magnet motor |
| CN101247055A (en) * | 2008-02-23 | 2008-08-20 | 广东美芝制冷设备有限公司 | Low-fluctuation rare earth permanent magnetic brushless motor |
| CN201450431U (en) * | 2009-06-18 | 2010-05-05 | 常州市裕成富通电机有限公司 | Lamination of stator of hub motor for electric bicycle |
-
2010
- 2010-05-11 CN CN2010101678606A patent/CN102244446A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1351776A (en) * | 1999-05-21 | 2002-05-29 | 松下电器产业株式会社 | Motor with permanent magnet |
| JP2005033941A (en) * | 2003-07-08 | 2005-02-03 | Toshiba Corp | Stator core for permanent magnet motor, and permanent magnet motor |
| CN101247055A (en) * | 2008-02-23 | 2008-08-20 | 广东美芝制冷设备有限公司 | Low-fluctuation rare earth permanent magnetic brushless motor |
| CN201450431U (en) * | 2009-06-18 | 2010-05-05 | 常州市裕成富通电机有限公司 | Lamination of stator of hub motor for electric bicycle |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105830319A (en) * | 2013-12-20 | 2016-08-03 | 法雷奥电机设备公司 | Motor Vehicle Engine Starter Having A Rotary Electric Machine With Perfected Salient Pole Inductor, And Corresponding Pole Shoe |
| CN107251368A (en) * | 2014-12-03 | 2017-10-13 | 阿什伍兹自动化有限公司 | Radial flux motor |
| CN107251368B (en) * | 2014-12-03 | 2019-09-17 | 阿什伍兹电机有限公司 | Radial flux motor |
| CN106849406A (en) * | 2017-03-15 | 2017-06-13 | 浙江永昌电气股份有限公司 | A kind of highly effective low noise stator punching |
| CN106972665A (en) * | 2017-04-17 | 2017-07-21 | 常州嘉轩数控设备有限公司 | A kind of high rotating speed permanent-magnetic synchronous motor rotor of high density used for electric vehicle |
| CN107994689A (en) * | 2018-01-18 | 2018-05-04 | 江苏环晟电机有限公司 | A kind of stator piece with direct current generator non-uniform gap |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| ASS | Succession or assignment of patent right |
Owner name: TIANJIN SANTROLL ELECTRIC AUTOMOBILE TECHNOLOGY CO Free format text: FORMER OWNER: TIANJIN SANTROLL ELECTRIC SCIENCE + TECHNOLOGY CO., LTD. Effective date: 20120514 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20120514 Address after: 300308 No., West ten road, airport logistics processing zone, Shanghai Applicant after: Tianjin Santroll Electric Automobile Technology Co., Ltd. Address before: 300308 No., West ten road, airport logistics processing zone, Shanghai Applicant before: Tianjin Santroll Electric Science & Technology Co., Ltd. |
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| C10 | Entry into substantive examination | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20111116 |