CN201717761U - Permanent magnet synchronous motor for compressor - Google Patents
Permanent magnet synchronous motor for compressor Download PDFInfo
- Publication number
- CN201717761U CN201717761U CN 201020226215 CN201020226215U CN201717761U CN 201717761 U CN201717761 U CN 201717761U CN 201020226215 CN201020226215 CN 201020226215 CN 201020226215 U CN201020226215 U CN 201020226215U CN 201717761 U CN201717761 U CN 201717761U
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- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
The utility model relates to a permanent magnet synchronous motor for a compressor, which includes a stator and a rotator, wherein the stator includes a stator iron core and a stator winding, and the rotator includes a rotator iron core, a permanent magnet, a rotator shaft and non magnetic-conducting rotator end plates arranged at two ends of the rotator iron core; a plurality of teeth for winding the stator winding are evenly formed on the inner side of the stator iron core; the inner end surface of each tooth is shaped like an internal arc, and the circle center of the internal arc is deviated from the center of the stator; the smallest air gap Deltamin is formed between the center part of the internal arc and the rotating track of the rotator, and the largest air gap is formed between the end part of the internal arc and the rotating track of the rotator. The structure characterized by stator internal arc eccentricity as well as rotator external arc eccentricity is adopted, so that under the condition that the rectangular shape of the permanent magnet is ensured, the voltage waveform sensed in the stator winding is improved by changing the shapes of teeth crowns and pole shoes and utilizing non-uniform air gaps, ripple wave torque is reduced during loading process, the torque fluctuation is reduced and the efficient and stable operation of a compressor system is realized.
Description
Technical field
The utility model relates to a kind of permanent magnet synchronous motor, particularly a kind of compressor permanent magnet synchronous motor.
Background technology
The noise of compressor is mainly derived from 2 aspects: the electric rotating machine of machinery itself (pump housing), Driven Compressor.During for employing permanent magnet synchronous motor driving device part, its desirable running status is that sinusoidal wave motor applies the sine-wave current excitation, produces the output of torque stably.And for the permanent magnet synchronous motor that adopts vector control, the sine of current of electric guarantees easily; But because the complexity of the magnetic circuit of magneto own, its counter potential waveform is not Sine distribution, but rectangular flat-top shape, this has reduced motor performance undoubtedly.
In the at present existing document,, a lot of work aspect motor body, have been done for improving the compressibility performance; Its major measure has: adopt bread shape permanent magnet (being used for the surface-mount type magneto), skewed stator slot, skewed-rotor etc.Though above method has certain effect to reducing motor oscillating and noise, has also brought a series of new problems simultaneously: make that processing and manufacturing process become complicated, cost rises, motor performance descends.
Chinese patent literature CN201319527 discloses a kind of motor rotor construction on September 30th, 2009, each extremely goes up this rotor and all adopt the off-centre operation structure, and the number of off-centre operation equals rotor magnetic pole number P.The center of circle of each eccentric arc is all on the d-axis coordinate.This d-axis coordinate is virtual reference coordinate, and this axle overlaps with field axis.Also there is weak point in this structure in using, and is left to be desired.
The utility model content
The purpose of this utility model aims to provide the compressor permanent magnet synchronous motor of a kind of simple and reasonable, high-performance, low noise, to overcome weak point of the prior art.
A kind of compressor permanent magnet synchronous motor by the design of this purpose comprises the stator that is made of stator core and stator winding, and by rotor core, permanent magnet, armature spindle be arranged at the rotor that the non-magnetic conduction rotor end plates at rotor core two ends constitutes; The inboard uniform a plurality of teeth of stator winding around the home that are used for that are provided with of stator core, the inner face of each tooth is set to interior circular arc, and its architectural feature is that stator center is departed from the center of circle of interior circular arc; Form minimal air gap δ min between the center of interior circular arc and the rotational trajectory of rotor, form maximum air gap δ max between the rotational trajectory of end and rotor.Winding adopts concentrates winding configuration (Y=1), and Y is a coil span, and promptly two of a coil limits are on a tooth.
What the described radius unanimity of circular arc in each, its center of circle departed from stator center is 0.2～0.3 times of stator minimum diameter Di1 apart from d1.
Described rotor cylindrical is surrounded by the multistage external arc; The quantity of external arc equals motor pole number, and centre of rotor is all departed from the center of circle of every section external arc.
What the radius unanimity of described every section external arc, its center of circle departed from rotor center is 0.03～0.1 times of stator minimum diameter Di1 apart from d2.
The angle that described every section external arc strides across is 360/2P, and wherein, P is the logarithm of the motor utmost point.Described permanent magnet is rectangular.
The utility model adopts the structure of interior circular arc off-centre of stator and rotor external arc off-centre, guaranteeing that permanent magnet is under the situation of rectangle, by changing crown and pole shoe shape, formation is easy to produce the non-uniform gap of sine wave magnetic field, obviously improved the voltage waveform of responding in the stator winding, ripple torque when having reduced load reduces torque ripple, realizes that compressibility is efficient, even running.It is simple and reasonable, production and processing is easy, cost is low, high efficiency, low vibration, low noise.
Description of drawings
Fig. 1 is the utility model one example structure schematic diagram.
Fig. 2 is actual measurement back emf waveform figure.
Fig. 3 is the stator structure schematic diagram.
Fig. 4 is the rotor structure schematic diagram.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described.
Referring to Fig. 1, Fig. 3 and Fig. 4, this compressor permanent magnet synchronous motor comprises stator and rotor, and stator comprises stator core 1, the stator winding 3 that is overrided to form by the multi-disc stator punching.Stator core 1 is inboard uniformly to be provided with six and to be used for the tooth 1.1 of stator winding 3 around the home, and the inner face of each tooth is set to interior circular arc 1.2, and stator center O is departed from the center of circle of interior circular arc 1.2; The center of interior circular arc 1.2 and the rotational trajectory of rotor (are seen the circle of Fig. 3 middle part shown in the center line, this circle also is the maximum outside diameter of rotor) between form minimal air gap δ min (seeing A arrow place among Fig. 3), formation maximum air gap δ max (seeing B arrow place among Fig. 3) between the rotational trajectory of end and rotor.
What the radius unanimity of circular arc 1.2 in each, its center of circle departed from stator center O is 0.2～0.3 times of stator minimum diameter Di1 apart from d1.Referring to Fig. 3, be example with the interior circular arc 1.2 of C arrow indication, its center of circle O ' is d1 with the distance of stator center O.
Rotor comprises rotor core 2, permanent magnet 4, the armature spindle that is overrided to form by the multi-disc rotor punching and is arranged at the non-magnetic conduction rotor end plates at rotor core 2 two ends; Axially be provided with shaft hole 5 and screw hole 6 on the rotor core 2; Permanent magnet 4 is rectangular.The rotor cylindrical is surrounded by four sections external arc 2.1; The quantity of external arc 2.1 equals motor pole number; Centre of rotor is all departed from the center of circle of every section external arc 2.1, and the angle that strides across is 360/2P, and wherein, P is the logarithm (because motor pole number is 4, so the logarithm of the motor utmost point is 2, the angle that every section external arc 2.1 strides across is 90 degree) of the motor utmost point.What the radius unanimity of every section external arc 2.1, its center of circle departed from rotor center is 0.03～0.1 times of stator minimum diameter Di1 apart from d2.Referring to Fig. 4, be example with the external arc 2.1 of D arrow indication, its center of circle O " be d2 with the distance of stator center O (stator center O overlaps with rotor center).
Referring to Fig. 2, be motor actual measurement back emf waveform figure in the utility model, this waveform near sinusoidal ripple.
Claims (6)
1. compressor permanent magnet synchronous motor, comprise the stator that constitutes by stator core (1) and stator winding (3), and by rotor core (2), permanent magnet (4), armature spindle be arranged at the rotor that the non-magnetic conduction rotor end plates at rotor core (2) two ends constitutes; The inboard uniform a plurality of teeth (1.1) of stator winding (3) around the home that are used for that are provided with of stator core (1), the inner face of each tooth is set to interior circular arc (1.2), it is characterized in that stator center (O) is departed from the center of circle of interior circular arc (1.2); Form minimal air gap δ min between the center of interior circular arc (1.2) and the rotational trajectory of rotor, form maximum air gap δ max between the rotational trajectory of end and rotor.
2. compressor permanent magnet synchronous motor according to claim 1 is characterized in that the described radius unanimity of circular arc (1.2) in each, and what stator center (O) was departed from its center of circle is 0.2～0.3 times of stator minimum diameter Di1 apart from d1.
3. compressor permanent magnet synchronous motor according to claim 1 and 2 is characterized in that described rotor cylindrical is surrounded by multistage external arc (2.1); The quantity of external arc (2.1) equals motor pole number, and centre of rotor is all departed from the center of circle of every section external arc (2.1).
4. compressor permanent magnet synchronous motor according to claim 3, what it is characterized in that the radius unanimity of described every section external arc (2.1), its center of circle depart from rotor center is 0.03～0.1 times of stator minimum diameter Di1 apart from d2.
5. compressor permanent magnet synchronous motor according to claim 4 is characterized in that the angle that described every section external arc (2.1) strides across is 360/2P, and wherein, P is the logarithm of the motor utmost point.
6. compressor permanent magnet synchronous motor according to claim 5 is characterized in that described permanent magnet (4) is rectangular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020226215 CN201717761U (en) | 2010-06-17 | 2010-06-17 | Permanent magnet synchronous motor for compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020226215 CN201717761U (en) | 2010-06-17 | 2010-06-17 | Permanent magnet synchronous motor for compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201717761U true CN201717761U (en) | 2011-01-19 |
Family
ID=43463768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020226215 Expired - Lifetime CN201717761U (en) | 2010-06-17 | 2010-06-17 | Permanent magnet synchronous motor for compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201717761U (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102751833A (en) * | 2012-07-19 | 2012-10-24 | 浙江大学 | Totally-enclosed permanent-magnet synchronous traction motor with unequal air gaps, skewed pole shoes and tangential magnetic circuit |
| CN102931795A (en) * | 2011-08-11 | 2013-02-13 | 中山大洋电机制造有限公司 | Motor structure |
| CN103051135A (en) * | 2011-10-17 | 2013-04-17 | 安徽美芝精密制造有限公司 | Permanent magnet synchronous motor of rotary compressor |
| CN103259351A (en) * | 2013-05-13 | 2013-08-21 | 广东威灵电机制造有限公司 | Permanent magnet motor |
| CN104578472A (en) * | 2013-10-18 | 2015-04-29 | 通用电气公司 | Torque ripple reduction in electric machines |
| CN105743314A (en) * | 2016-05-06 | 2016-07-06 | 吕三元 | Brushless energy-saving automobile motor of highly efficient new energy rare earth permanent magnet direct-current |
| CN106451852A (en) * | 2016-10-26 | 2017-02-22 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor and permanent magnet motor |
| CN107872105A (en) * | 2016-09-26 | 2018-04-03 | 珠海凌达压缩机有限公司 | Motor stator punching, motor stator structure and motor |
| CN107994696A (en) * | 2018-01-18 | 2018-05-04 | 江苏环晟电机有限公司 | A kind of plum blossom-shaped rotor |
| CN108173402A (en) * | 2018-01-21 | 2018-06-15 | 湖北西浦电机科技有限责任公司 | The salient pole synchronous electric machine of double eccentric arc field structures |
| CN108649767A (en) * | 2018-06-05 | 2018-10-12 | 广东工业大学 | A kind of construction method of magneto and its model |
| CN111193341A (en) * | 2018-11-14 | 2020-05-22 | 沈阳中航机电三洋制冷设备有限公司 | DC motor and rotary compressor using the same |
| CN113922628A (en) * | 2021-10-13 | 2022-01-11 | 珠海格力电器股份有限公司 | Motor stator and rotor structure and motor |
-
2010
- 2010-06-17 CN CN 201020226215 patent/CN201717761U/en not_active Expired - Lifetime
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102931795A (en) * | 2011-08-11 | 2013-02-13 | 中山大洋电机制造有限公司 | Motor structure |
| CN102931795B (en) * | 2011-08-11 | 2014-11-12 | 中山大洋电机制造有限公司 | Motor structure |
| CN103051135A (en) * | 2011-10-17 | 2013-04-17 | 安徽美芝精密制造有限公司 | Permanent magnet synchronous motor of rotary compressor |
| CN102751833A (en) * | 2012-07-19 | 2012-10-24 | 浙江大学 | Totally-enclosed permanent-magnet synchronous traction motor with unequal air gaps, skewed pole shoes and tangential magnetic circuit |
| CN103259351A (en) * | 2013-05-13 | 2013-08-21 | 广东威灵电机制造有限公司 | Permanent magnet motor |
| CN104578472A (en) * | 2013-10-18 | 2015-04-29 | 通用电气公司 | Torque ripple reduction in electric machines |
| CN105743314A (en) * | 2016-05-06 | 2016-07-06 | 吕三元 | Brushless energy-saving automobile motor of highly efficient new energy rare earth permanent magnet direct-current |
| CN107872105A (en) * | 2016-09-26 | 2018-04-03 | 珠海凌达压缩机有限公司 | Motor stator punching, motor stator structure and motor |
| CN106451852A (en) * | 2016-10-26 | 2017-02-22 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor and permanent magnet motor |
| CN107994696A (en) * | 2018-01-18 | 2018-05-04 | 江苏环晟电机有限公司 | A kind of plum blossom-shaped rotor |
| CN108173402A (en) * | 2018-01-21 | 2018-06-15 | 湖北西浦电机科技有限责任公司 | The salient pole synchronous electric machine of double eccentric arc field structures |
| CN108649767A (en) * | 2018-06-05 | 2018-10-12 | 广东工业大学 | A kind of construction method of magneto and its model |
| CN111193341A (en) * | 2018-11-14 | 2020-05-22 | 沈阳中航机电三洋制冷设备有限公司 | DC motor and rotary compressor using the same |
| CN111193341B (en) * | 2018-11-14 | 2021-09-28 | 沈阳中航机电三洋制冷设备有限公司 | DC motor and rotary compressor using the same |
| CN113922628A (en) * | 2021-10-13 | 2022-01-11 | 珠海格力电器股份有限公司 | Motor stator and rotor structure and motor |
| CN113922628B (en) * | 2021-10-13 | 2022-12-02 | 珠海格力电器股份有限公司 | Motor stator and rotor structure and motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110119 |