微特电机 ›› 2018, Vol. 46 ›› Issue (12): 50-53.doi: 1004-7018(2018)12-0050-04

• 驱动控制 • 上一篇    下一篇

IPM电机反电动势设计对系统性能影响的分析

童童1,2,陈彬1,2,胡余生1,2,卢素华2   

  1. 1. 空调设备及系统运行节能国家重点实验室,珠海 519000
    2. 珠海格力节能环保制冷技术研究中心有限公司,珠海 519000
  • 收稿日期:2016-09-10 出版日期:2018-12-28 发布日期:2018-12-28

Analysis of the Influence of IPM Motor System Performance With Back EMF Design

TONG Tong1,2, CHEN Bin1,2, HU Yu-sheng1,2, LU Su-hua2   

  1. 1. State Key Laboratory of Air-Conditioning Equipment and System Energy Conservation,Zhuhai 519000,China
    2. Green Refrigeration Equipment Engineering Research Center of Zhuhai Gree Co., Ltd.,Zhuhai 519000,China
  • Received:2016-09-10 Online:2018-12-28 Published:2018-12-28

摘要:

通过IPM(interior permanent magnet)电机数学模型,得出了在理想波形下反电动势不对电机性能构成影响的结论。然而在PWM波驱动时,该结论是不成立的。通过对每个载波周期下波形特点以及电流谐波分析,进一步设计实验样机,并进行损耗分析,得出了高反电动势可以有效抑制磁通脉动并降低铁耗的结论。高反电动势又可能导致弱磁电流增加引起损耗增加。为解决该矛盾,总结了以系统效率最大化为目标的反电动势设计原则。

关键词: 内置式永磁电机, PWM驱动, 反电动势

Abstract:

The performance of IPM motor is not relevant to back EMF under the ideal waveform condition by studying the motor mathematical model. However, the conclusion doesn't hold when the drive is PWM wave. Waveform characteristics and the current harmonic in each period of signal carrier were analyzed,the experimental prototype was designed to get loss analysis. It was summarized that the motor which has higher back EMF can inhibit pulsation of the magnetic flux effectively and decrease iron loss, but it may raise loss due to the raise-up of de-magnetic current. In order to solve this contradiction, principles of back EMF design were summarized to obtain maximum system efficiency.

Key words: interior permanent magnet (IPM) motor, PWM drive, back EMF

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