| 矢量控制永磁同步电动机的转矩脉动分析 |
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| 引用本文： | 吴茂刚,赵荣祥.矢量控制永磁同步电动机的转矩脉动分析[J].电工技术学报,2007,22(2):9-14. |
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| 作者姓名： | 吴茂刚 赵荣祥 |
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| 作者单位： | 1. 浙江大学电气工程学院,杭州,310027;杭州电子科技大学自动化研究所,杭州,310018
2. 浙江大学电气工程学院,杭州,310027 |
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| 摘 要： | 研究了空间矢量脉宽调制(SVPWM)和死区效应引起的永磁同步电动机转矩脉动,推导出SVPWM引起的电流波动量和偏差磁链矢量的计算公式,分析了死区设置引起的误差电压矢量及其所产生的死区效应,计算出误差电压矢量的幅值及其与三相电流极性的对应关系。通过仿真实例证实了两种转矩脉动的产生,实验结果表明可以根据误差电压矢量的特性,通过补偿的方法消除死区效应。
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| 关 键 词： | 空间矢量脉宽调制 死区效应 转矩脉动 永磁同步电动机 |
| 修稿时间： | 2005年8月12日 |
Analysis of Torque Ripples of Vector-Controlled Permanent Magnet Synchronous Motors |
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| Wu Maogang,Zhao Rongxiang.Analysis of Torque Ripples of Vector-Controlled Permanent Magnet Synchronous Motors[J].Transactions of China Electrotechnical Society,2007,22(2):9-14. |
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| Authors: | Wu Maogang Zhao Rongxiang |
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| Affiliation: | 1. Zhejiang University Hangzhou 310027 China 2. Hangzhou Dianzi University Hangzhou 310018 China |
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| Abstract: | Torque ripples of permanent magnet synchronous motor caused by space vector pulse width modulation and dead-time effects are analyzed,calculation formulas of current ripple quantity and error flux linkage vector caused by SVPWM are deduced,and error voltage vector and dead-time effects caused by dead-time are analyzed. Amplitude of error voltage vector is calculated and its phase angle corresponding to 3-phase current polarities is expressed.The two torque ripples are validated by simulation example. Experimental results show that dead-time effects can be eliminated by compensation according to error voltage characteristic. |
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| Keywords: | Space vector pulse width modulation (SVPWM) dead-time effects torque ripple permanent magnet synchronous motor |
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