| 异步电机直接转矩控制系统SVPWM算法的改进 |
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| 引用本文： | 张爱玲,周赞强,王建华. 异步电机直接转矩控制系统SVPWM算法的改进[J]. 太原理工大学学报, 2010, 41(3) |
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| 作者姓名： | 张爱玲 周赞强 王建华 |
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| 作者单位： | 太原理工大学,电气与动力工程学院,太原,030024 |
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| 基金项目： | 山西省科技攻关资助项目 |
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| 摘 要： | 针对异步电机直接转矩控制系统存在的转矩和磁链脉动大、器件开关频率不定等缺点,分析了异步电机减小转矩脉动的SVPWM算法,该算法是在假设定转子磁链近似相等的条件下得到的,这在一定程度上降低了控制精度;考虑到定、转子磁链的不同,提出了一种改进方案,并通过MATLAB仿真证明了改进方案的可行性。仿真结果表明,改进后的算法的精度更高,电机的转矩和磁链的脉动更小,开关频率固定。
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| 关 键 词： | 异步电机 转矩脉动 |
Direct Torque Control of Induction Motor Based on Modified SVPWM Algorithm |
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| ZHANG Ai-ling,ZHOU Zan-qiang,WANG Jian-hua. Direct Torque Control of Induction Motor Based on Modified SVPWM Algorithm[J]. Journal of Taiyuan University of Technology, 2010, 41(3) |
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| Authors: | ZHANG Ai-ling ZHOU Zan-qiang WANG Jian-hua |
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| Affiliation: | ZHANG Ai-ling,ZHOU Zan-qiang,WANG Jian-hua(Electrical , Power Engineering College,TUT,Taiyuan 030024,China) |
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| Abstract: | To solve the problems of uncertainty of switching frequency,the flux ripple and the torque ripple existing in direct torque control(DTC) for induction motors, this paper analyzed the SVPWM algorithm of reducing torque ripple in the DTC of induction motor,which was obtained on the assumption of approximately equr stator flux and rotor flux approximate equal and thus perated with redaced control precision.In this paper,an improved program based on the difference bwteen stator flux and rotor flux was proposed,... |
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| Keywords: | SVPWM |
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