CN102142755A - V-shaped slot rotor of self-starting permanent magnet synchronous motor - Google Patents
V-shaped slot rotor of self-starting permanent magnet synchronous motor Download PDFInfo
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- CN102142755A CN102142755A CN 201110053605 CN201110053605A CN102142755A CN 102142755 A CN102142755 A CN 102142755A CN 201110053605 CN201110053605 CN 201110053605 CN 201110053605 A CN201110053605 A CN 201110053605A CN 102142755 A CN102142755 A CN 102142755A
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- 230000001360 synchronised effect Effects 0.000 title claims abstract description 22
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 17
- 241000555745 Sciuridae Species 0.000 claims abstract 12
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 11
- 229910052782 aluminium Inorganic materials 0.000 claims description 11
- 230000005347 demagnetization Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 2
- 239000004411 aluminium Substances 0.000 description 7
- 230000005284 excitation Effects 0.000 description 6
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 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 1
- 230000006698 induction Effects 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
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- Permanent Magnet Type Synchronous Machine (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
本发明公开的自起动永磁同步电机V型槽转子包括铁心、永磁体、鼠笼导条和轴，铁心具有成V型排列的槽，每两块置于V型槽中的永磁体构成一个磁极，每个V型槽的底部相隔，形成V型槽中两块永磁体的磁桥，在相邻V型槽顶部所对应的两根鼠笼导条之间设置轴向空气槽。也可以仅采用每个V型槽的底部相隔，形成V型槽中两块永磁体的磁桥。或者仅采用在相邻V型槽顶部所对应的两根鼠笼导条之间设置轴向空气槽。与目前国内外使用的V型槽转子相比，避免了起动过程中永磁体局部退磁的现象，同时也减小了稳态运行过程中转子内部的涡流损耗，对提高自起动永磁同步机的可靠性和稳态性能均有一定的效果。
The V-groove rotor of the self-starting permanent magnet synchronous motor disclosed by the present invention includes an iron core, a permanent magnet, a squirrel cage bar and a shaft. The magnetic poles are separated from the bottom of each V-shaped groove to form a magnetic bridge of two permanent magnets in the V-shaped groove, and an axial air groove is arranged between the two squirrel cage guide bars corresponding to the top of the adjacent V-shaped groove. It is also possible to only separate the bottoms of each V-shaped groove to form a magnetic bridge of two permanent magnets in the V-shaped groove. Or only the axial air grooves are arranged between the two squirrel cage guide bars corresponding to the tops of the adjacent V-shaped grooves. Compared with the V-groove rotor currently used at home and abroad, it avoids the phenomenon of partial demagnetization of the permanent magnet during the starting process, and at the same time reduces the eddy current loss inside the rotor during the steady-state operation, which is helpful for improving the performance of the self-starting permanent magnet synchronous machine. Both reliability and steady-state performance have some effect.
Description
Technical field
The present invention relates to the rotor of self-starting permanent magnet synchronous motor.
Background technology
Self-starting permanent magnet synchronous motor more and more is subject to people's attention in recent years, compare with asynchronous machine, the operation stability height, efficient and power factor all are higher than the asynchronous machine of equal-wattage grade, the economical operation wide ranges, be expected to replace asynchronous machine in a lot of industrial applications, but the reliability of permanent magnet becomes the key factor that hinders this motor extensive use always.With regard to the motor body structure, existing self-starting permanent magnet synchronous motor rotor structure can be divided into parallel, tandem and hybrid combination according to putting of permanent magnet.V-type groove structure belongs to a kind of of series-mode frame, and existing V-type groove rotor core is (is example with 4 utmost point motors) as shown in Figure 1.The rotor of this structure comprises iron core 1, mouse cage sliver 2, permanent magnet 4 and axle 5, and iron core has into the groove that V-type is arranged, and per two place the permanent magnet of V-type groove to constitute magnetic poles.
There is following problem in this V-type rotor:
1, in the starting process, serious distortion can take place in the internal rotor magnetic circuit, causes the irreversible loss of excitation of the local generation of permanent magnet easily.
2, the close variation of magnetic is violent in the rotor, has increased permanent magnet, mouse cage and interior eddy current loss unshakable in one's determination, influences motor performance.
3, the mechanical stress of rotor silicon steel sheet is relatively poor, and the radial pull of rotor is only by providing every the magnetic magnetic bridge between permanent magnet and the squirrel-cage bar.
Summary of the invention
The purpose of this invention is to provide a kind of efficient height, reliability height, self-starting permanent magnet synchronous motor rotor that mechanical stress is strong.
For reaching above-mentioned purpose, the present invention has following three kinds of technical solutions:
Self-starting permanent magnet synchronous motor V-type groove rotor, comprise iron core, permanent magnet, mouse cage sliver and axle, iron core has into the groove that V-type is arranged, per two place the permanent magnet of V-type groove to constitute a magnetic pole, it is characterized in that: the bottom of each V-type groove is separated by, form the magnetic bridge of two permanent magnets in the V-type groove, between the pairing two mouse cage slivers in adjacent V-type groove top, the axial air groove is set.
Scheme 2
Self-starting permanent magnet synchronous motor V-type groove rotor, comprise iron core, permanent magnet, mouse cage sliver and axle, iron core has into the groove that V-type is arranged, per two place the permanent magnet of V-type groove to constitute a magnetic pole, it is characterized in that: the bottom of each V-type groove is separated by, and forms the magnetic bridge of two permanent magnets in the V-type groove.
Self-starting permanent magnet synchronous motor V-type groove rotor, comprise iron core, permanent magnet, mouse cage sliver and axle (6), iron core has into the groove that V-type is arranged, per two place the permanent magnet of V-type groove to constitute a magnetic pole, it is characterized in that: between the pairing two mouse cage slivers in adjacent V-type groove top the axial air groove is set.
The cross section of above-mentioned air groove can be rectangle, ladder type or ellipse.
Also the cast aluminium sliver can be arranged in the air groove, cast aluminium sliver itself and mouse cage sliver constitute the rotor mouse cage jointly.
In general, the starting current times of self-starting permanent magnet synchronous motor is bigger than the asynchronous machine with power grade a little, the rotor current that stator current and induction produce during starting will produce very big demagnetization magnetic potential, under the normal condition, this demagnetization magnetic potential is evenly born by a pair of four permanent magnets under extremely, ideally permanent magnet is safe, the risk that does not have demagnetization, but existing V-type groove structure is not taked under the situation of magnetic circuit optimization, magnetic circuit distorts, and causes this demagnetization magnetic potential to act directly on the part of part permanent magnet, in the starting process, local loss of excitation takes place in permanent magnet easily, and progressively worsens until the whole losss of excitation of permanent magnet.The present invention is by being provided with air groove/or every magnetic bridge, avoided magnetic circuit that the serious phenomenon of the local loss of excitation of distortion back permanent magnet takes place.Can cast aluminium in the air groove or cast aluminium not.At air groove/or under the effect of magnetic bridge, effectively weakened the degree of magnetic circuit distortion in the starting process, suppressed the close variation of permanent magnet inner magnet, and guaranteed that the phenomenon of local loss of excitation can not take place permanent magnet, reduce the loss of internal rotor simultaneously, improved efficiency of motor.Not only optimize magnetic circuit every the magnetic magnetic bridge, and for rotor provides radial pull, thereby improved the mechanical strength of motor.
Advantage of the present invention is:
1, mechanical strength height
The V-type trench bottom be provided with every magnetic bridge, not only optimized magnetic circuit, improved the reliability of permanent magnet, and mechanically can provide pulling force radially, strengthened the mechanical strength of rotor.
2, reliability height
By air groove/or every magnetic bridge, avoided the phenomenon of the local loss of excitation of permanent magnet in the starting process is set, improved the reliability of motor.
3, efficient height
By air groove/or every magnetic bridge, make the close variation of magnetic at permanent magnet and other positions of rotor weaken is set, reduced rotor eddy current loss, improved efficiency of motor.
Description of drawings
Fig. 1 has the rotor core of V-type groove now
Fig. 2 is the present invention program 1 a self-starting permanent magnet synchronous motor rotor radial sectional view.
Among the figure, 1 is unshakable in one's determination, and 2 is permanent magnet, and 3 is the mouse cage sliver, and 4 is air groove, and 5 is magnetic bridge, and 6 is axle.
Embodiment
With reference to Fig. 2, self-starting permanent magnet synchronous motor V-type groove rotor comprises iron core 1, permanent magnet 2, mouse cage sliver 3 and axle 6, iron core has into the groove that V-type is arranged, per two place the permanent magnet of V-type groove to constitute a magnetic pole, illustrated example has 4 magnetic poles, the bottom of each V-type groove is separated by, and forms the magnetic bridge of two permanent magnets in the V-type groove, between the pairing two mouse cage slivers 3 in adjacent V-type groove top axial air groove 4 is set.
Self-starting permanent magnet synchronous motor V-type groove rotor of the present invention also can only adopt the bottom of each V-type groove to be separated by, and forms the magnetic bridge of two permanent magnets in the V-type groove.Perhaps only adopt between the pairing two mouse cage slivers in adjacent V-type groove top the axial air groove is set.In the air groove cast aluminium sliver can be arranged, cast aluminium sliver and the mouse cage sliver 3 common rotor mouse cages that form.Also cast aluminium not in the air groove.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110053605 CN102142755A (en) | 2011-03-07 | 2011-03-07 | V-shaped slot rotor of self-starting permanent magnet synchronous motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110053605 CN102142755A (en) | 2011-03-07 | 2011-03-07 | V-shaped slot rotor of self-starting permanent magnet synchronous motor |
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| Publication Number | Publication Date |
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| CN102142755A true CN102142755A (en) | 2011-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110053605 Pending CN102142755A (en) | 2011-03-07 | 2011-03-07 | V-shaped slot rotor of self-starting permanent magnet synchronous motor |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102377264A (en) * | 2011-11-21 | 2012-03-14 | 浙江迈雷科技有限公司 | Rotor structure of permanent magnet synchronous motor and permanent magnet synchronous motor |
| CN104037965A (en) * | 2014-06-19 | 2014-09-10 | 浙江西传电气科技有限公司 | Rotor structure of permanent magnet synchronous motor |
| CN106558932A (en) * | 2016-12-02 | 2017-04-05 | 丹东山川电机有限公司 | A kind of rotor structure for improving 2 pole self-starting Air-gap Flux Density in Permanent Magnet Machines waveforms |
| CN107070027A (en) * | 2016-12-29 | 2017-08-18 | 湘潭电机股份有限公司 | A kind of high speed permanent magnet motor rotor structure and motor |
| CN107425689A (en) * | 2017-08-21 | 2017-12-01 | 伊泽瑞尔(大连)科技有限公司 | A kind of anti-demagnetization permanent magnet machine rotor |
| CN107659103A (en) * | 2017-11-06 | 2018-02-02 | 上海电机系统节能工程技术研究中心有限公司 | A kind of asynchronous starting permanent magnet synchronous motor |
| CN109861425A (en) * | 2019-03-14 | 2019-06-07 | 江苏迈吉易威电动科技有限公司 | It is a kind of mix cage rotor line-start permanent magnetic synchronous motor and its starting method |
| CN110829658A (en) * | 2019-12-17 | 2020-02-21 | 湘潭电机股份有限公司 | Rotor of self-starting permanent magnet synchronous motor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4403161A (en) * | 1977-06-24 | 1983-09-06 | Hitachi, Ltd. | Permanent magnet rotor |
| CN1638244A (en) * | 1999-07-16 | 2005-07-13 | 松下电器产业株式会社 | Permanent magnet synchronous motor |
| CN201252459Y (en) * | 2008-07-23 | 2009-06-03 | 广东美芝制冷设备有限公司 | Asynchronous starting permanent magnet synchronous motor |
| CN202004553U (en) * | 2011-03-07 | 2011-10-05 | 浙江大学 | V-shaped groove rotor of self-starting permanent magnet synchronous motor |
-
2011
- 2011-03-07 CN CN 201110053605 patent/CN102142755A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4403161A (en) * | 1977-06-24 | 1983-09-06 | Hitachi, Ltd. | Permanent magnet rotor |
| CN1638244A (en) * | 1999-07-16 | 2005-07-13 | 松下电器产业株式会社 | Permanent magnet synchronous motor |
| CN201252459Y (en) * | 2008-07-23 | 2009-06-03 | 广东美芝制冷设备有限公司 | Asynchronous starting permanent magnet synchronous motor |
| CN202004553U (en) * | 2011-03-07 | 2011-10-05 | 浙江大学 | V-shaped groove rotor of self-starting permanent magnet synchronous motor |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102377264A (en) * | 2011-11-21 | 2012-03-14 | 浙江迈雷科技有限公司 | Rotor structure of permanent magnet synchronous motor and permanent magnet synchronous motor |
| CN102377264B (en) * | 2011-11-21 | 2014-03-19 | 浙江迈雷科技有限公司 | Rotor structure of permanent magnet synchronous motor and permanent magnet synchronous motor |
| CN104037965A (en) * | 2014-06-19 | 2014-09-10 | 浙江西传电气科技有限公司 | Rotor structure of permanent magnet synchronous motor |
| CN106558932A (en) * | 2016-12-02 | 2017-04-05 | 丹东山川电机有限公司 | A kind of rotor structure for improving 2 pole self-starting Air-gap Flux Density in Permanent Magnet Machines waveforms |
| CN106558932B (en) * | 2016-12-02 | 2019-09-06 | 丹东山川电机有限公司 | A kind of rotor structure improving 2 pole self-starting Air-gap Flux Density in Permanent Magnet Machines waveforms |
| CN107070027A (en) * | 2016-12-29 | 2017-08-18 | 湘潭电机股份有限公司 | A kind of high speed permanent magnet motor rotor structure and motor |
| CN107425689A (en) * | 2017-08-21 | 2017-12-01 | 伊泽瑞尔(大连)科技有限公司 | A kind of anti-demagnetization permanent magnet machine rotor |
| CN107425689B (en) * | 2017-08-21 | 2024-02-02 | 伊泽瑞尔(大连)科技有限公司 | Anti-demagnetizing permanent magnet motor rotor |
| CN107659103A (en) * | 2017-11-06 | 2018-02-02 | 上海电机系统节能工程技术研究中心有限公司 | A kind of asynchronous starting permanent magnet synchronous motor |
| CN107659103B (en) * | 2017-11-06 | 2023-10-31 | 上海电机系统节能工程技术研究中心有限公司 | An asynchronous starting permanent magnet synchronous motor |
| CN109861425A (en) * | 2019-03-14 | 2019-06-07 | 江苏迈吉易威电动科技有限公司 | It is a kind of mix cage rotor line-start permanent magnetic synchronous motor and its starting method |
| CN110829658A (en) * | 2019-12-17 | 2020-02-21 | 湘潭电机股份有限公司 | Rotor of self-starting permanent magnet synchronous motor |
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Application publication date: 20110803 |