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五相电压源逆变器的空间矢量脉宽调制方法研究 被引量:16

Research of Space Vector PWM Techniques for Five-phase Voltage Source Inverter
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摘要 为提高五相电压源逆变器(voltage source inverter,VSI)的直流母线电压利用率,减少输出相电压中所含的谐波分量,提出一种改进的基于最近四矢量的五相VSI空间矢量脉宽调制算法。根据调制系数的不同,将整个调制范围分为正弦调制区和非正弦调制区。在正弦调制区,通过合理分配空间矢量的作用时间,使得输出相电压为标准正弦波形,不含有任何谐波成分;在非正弦调制区,通过对谐波子空间内的电压矢量进行优化控制,在进一步提高直流母线电压利用率的同时,保证输出相电压中所含谐波分量更少,使逆变器工作在最优状态。仿真和实验结果验证了所提算法的正确性和可行性。 To improve the DC bus voltage utilization of five-phase voltage source inverter (VSI) and reduce the harmonic component of output phase voltages, a space vector pulse width modulation (SVPWM) algorithm of five-phase VSI based on adjacent four voltage vectors was proposed. According to the value of modulation index, the modulation range could be divided into sine modulation region and non-sine modulation region. In sine modulation region, the output phase voltages are standard sine waves without any harmonic component through allocating the action time of space vector appropriately. In non-sine modulation region, through optimizing the voltage vector in harmonic subspace, not only the DC bus voltage utilization is improved effectively, but also the harmonic component of output phase voltages is minimized. Simulation and experimental results verify the correctness and feasibility of the proposed algorithm.
出处 《中国电机工程学报》 EI CSCD 北大核心 2014年第18期2917-2925,共9页 Proceedings of the CSEE
基金 国家自然科学基金项目(51177026)~~
关键词 永磁同步电动机 五相电压源逆变器 空间矢量脉宽调制 谐波分析 调制系数 permanent magnetic synchronous motor(PMSM) five-phase voltage source inverter (VSI) spacevector pulse width modulation (SVPWM) harmonic analysis modulation index
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参考文献19

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