CN103208869A - Stator and rotor slots for three-phase motor - Google Patents
Stator and rotor slots for three-phase motor Download PDFInfo
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- CN103208869A CN103208869A CN201210543460XA CN201210543460A CN103208869A CN 103208869 A CN103208869 A CN 103208869A CN 201210543460X A CN201210543460X A CN 201210543460XA CN 201210543460 A CN201210543460 A CN 201210543460A CN 103208869 A CN103208869 A CN 103208869A
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Abstract
Disclosed are stator and rotor slots for a three-phase motor. 60 slots are arranged uniformly on a stator, 52 slots are arranged uniformly on a rotor, and the rotor slots are in convex structures. According to the stator and rotor slots, stray losses of the stator and rotor slots are lower than those of rotors with 50 slots, the whole motor efficiency is improved by 0.38% and exceeds 0.24% of an ultra-high-efficiency IE 3 standard value of the international electro technical commission, and a novel approach is set for new records of small and medium-sized motors to achieve the ultra high efficiency.
Description
Technical field
The present invention relates to the ultra high efficiency motor, relate in particular to a kind of rotor groove of three phase electric machine.
Background technology:
The efficient of threephase motor is the ratio of power output and input power, and input power is more little, and efficiency of motor is just relatively more high.The difference of input power and power output is that the total losses of motor are mainly divided following five kinds: iron loss, mechanical friction loss and the stray loss of stator copper loss, rotor aluminium consumption, silicon steel sheet.For preceding four lossies be can by theoretical calculate and detect get, wherein no doubt important in the strictness control of the size of the fifth-largest loss in the selecting for use of permeability magnetic material, punching manufacture craft, but the design that the rotor groove cooperates is to influence one of decisive factor of this loss of motor, affect the value of total losses, the height of final decision efficient.
Summary of the invention:
The objective of the invention is toImprove electric efficiency by the cooperation that changes threephase motor rotor punching groove with fundamental magnetic potential, the reduction stray loss that improves motor, make motor be issued to the technical research of ultra high efficiency standard-required in the situation of low material cost.
The present invention is achieved in that a kind of rotor groove of three phase electric machine cooperates, and it is characterized in that: evenly be provided with 60 grooves on the stator, rotor evenly is provided with 52 grooves, and described rotor is convex structure.
Stray loss of the present invention is lower than the rotor of 50 grooves, make whole electric efficiency improve 0.38%, has surpassed 0.24% of the Ultra-High Efficiency IE3 of International Power committee standard value, realizes for middle and small motor that the technology of Ultra-High Efficiency creates the highest again and has established new way.
Description of drawings
Fig. 1 is the structural representation of punching of the present invention;
Fig. 2 is the structural representation of former rotor punching;
Fig. 3 is the experimental performance parameter list of model machine of the present invention.
Embodiment
The invention will be further described below in conjunction with accompanying drawing
The present invention changes the groove number of rotor into 52 grooves by 50 original grooves, simultaneously the flute profile size of rotor has been carried out newly-designed adjustment, changes original flute profile into convex by knife-edge, and channel-section is long-pending to be increased, and rotor resistance is reduced, and the aluminium consumption of rotor reduces.
For the loss value that makes the ultra high efficiency motor descends to some extent, considered to carry out to adjust the new design that groove cooperates from design point of view.According to following calculating formula the generation of adverse consequences is all got rid of, is determined to be adjusted into 60/52(code name Q1/Q2) to meet the demands:
1) Q2 ≠ Q1 (if equate will when stall, produce synchronous torque), namely 52 ≠ 60;
2) if Q2 ≠ Q1+2p(equates to produce synchronous torque in the running) namely 52 ≠ 60+4(be 4 for 4 utmost point motor: 2P, below identical);
3) if Q2 ≠ Q1-2p(equates to produce synchronous torque when braking) 52 ≠ 60-4;
4) Q2 ≠ Q1 ± i or Q2 ≠ Q1 ± 2p ± i (i is 1,2 or 3) (may produce vibration and electromagnetic noise in the running if equate).
The present invention is also to the testing of 4 model machines, and Fig. 3 is relatively seen in the test of the performance parameter of model machine.With reference to Fig. 3, motor after the new design of the employing rotor groove cooperation 60/52 is under the situation that technology mode is equal to, the motor noise of 52 groove rotors is than the reduction 2dB (A) of 50 grooves, the rotor test value of loss ratio 50 grooves has reduced 240W, the decline ratio accounts for 0.32% of rated power, the aluminium consumption of rotor reduces 40W, makes whole electric efficiency improve 0.38%, has surpassed 0.24% of the Ultra-High Efficiency IE3 of International Power committee standard value.Realize for middle and small motor that the technology of Ultra-High Efficiency creates the highest again and establish new way.
Claims (1)
1. the rotor groove of a three phase electric machine, it is characterized in that: evenly be provided with 60 grooves on the stator, rotor evenly is provided with 52 grooves, and described rotor is convex structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210543460XA CN103208869A (en) | 2012-12-17 | 2012-12-17 | Stator and rotor slots for three-phase motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210543460XA CN103208869A (en) | 2012-12-17 | 2012-12-17 | Stator and rotor slots for three-phase motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103208869A true CN103208869A (en) | 2013-07-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210543460XA Pending CN103208869A (en) | 2012-12-17 | 2012-12-17 | Stator and rotor slots for three-phase motor |
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| CN (1) | CN103208869A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103457373A (en) * | 2013-09-09 | 2013-12-18 | 中达电机股份有限公司 | Rotor sheet with axial ventilation holes |
Citations (8)
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|---|---|---|---|---|
| US5886435A (en) * | 1995-11-27 | 1999-03-23 | Dymond; James Henry | Reduction of windage noise in dynamoelectric machines |
| US6058596A (en) * | 1998-08-03 | 2000-05-09 | General Electric Company | Method of making an induction motor rotor |
| CN201156694Y (en) * | 2008-02-15 | 2008-11-26 | 上海电科电机科技有限公司 | Asynchronously starting permanent magnet synchronous motor having special slot rotor |
| CN101425731A (en) * | 2008-09-23 | 2009-05-06 | 广东省东莞电机有限公司 | 6 pole asynchronous starting permanent magnet synchronous motor |
| CN201345573Y (en) * | 2008-12-10 | 2009-11-11 | 抚顺煤矿电机制造有限责任公司 | Small high-power electric motor |
| CN101826762A (en) * | 2010-05-17 | 2010-09-08 | 无锡市中达电机有限公司 | Four-pole electric machine rotor sheet for injection molding machine |
| CN201726286U (en) * | 2009-09-15 | 2011-01-26 | 上海电器科学研究所（集团）有限公司 | Slot coordination of small-sized efficient three-phase asynchronous motor |
| CN203219011U (en) * | 2012-12-17 | 2013-09-25 | 江苏大中电机股份有限公司 | Novel three-phase motor stator and rotor slots |
-
2012
- 2012-12-17 CN CN201210543460XA patent/CN103208869A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5886435A (en) * | 1995-11-27 | 1999-03-23 | Dymond; James Henry | Reduction of windage noise in dynamoelectric machines |
| US6058596A (en) * | 1998-08-03 | 2000-05-09 | General Electric Company | Method of making an induction motor rotor |
| CN201156694Y (en) * | 2008-02-15 | 2008-11-26 | 上海电科电机科技有限公司 | Asynchronously starting permanent magnet synchronous motor having special slot rotor |
| CN101425731A (en) * | 2008-09-23 | 2009-05-06 | 广东省东莞电机有限公司 | 6 pole asynchronous starting permanent magnet synchronous motor |
| CN201345573Y (en) * | 2008-12-10 | 2009-11-11 | 抚顺煤矿电机制造有限责任公司 | Small high-power electric motor |
| CN201726286U (en) * | 2009-09-15 | 2011-01-26 | 上海电器科学研究所（集团）有限公司 | Slot coordination of small-sized efficient three-phase asynchronous motor |
| CN101826762A (en) * | 2010-05-17 | 2010-09-08 | 无锡市中达电机有限公司 | Four-pole electric machine rotor sheet for injection molding machine |
| CN203219011U (en) * | 2012-12-17 | 2013-09-25 | 江苏大中电机股份有限公司 | Novel three-phase motor stator and rotor slots |
Non-Patent Citations (2)
| Title |
|---|
| 李伟: "电压型逆变器供电的异步牵引电动机电磁设计和稳态特性研究", 《中国优秀博硕士学位论文全文数据库工程科技Ⅱ辑 》 * |
| 黄国治 傅丰礼: "《Y2系列三相异步电动机技术手册》", 31 January 2004 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103457373A (en) * | 2013-09-09 | 2013-12-18 | 中达电机股份有限公司 | Rotor sheet with axial ventilation holes |
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Application publication date: 20130717 |