| 多电平逆变器多载波PWM调制策略的研究 |
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| 引用本文： | 周京华,杨振,苏彦民.多电平逆变器多载波PWM调制策略的研究[J].电气传动,2005,35(1):23-27. |
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| 作者姓名： | 周京华 杨振 苏彦民 |
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| 作者单位： | 西安交通大学 |
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| 摘 要： | 介绍了多电平逆变器的思想,对多电平逆变器不同的拓扑结构进行了比较,研究和分析了用于多电平逆变器不同的多载波PWM调制策略.通过对未滤波的逆变器输出电压的谐波分析,对不同调制方法在线性调制区的谐波特性进行了比较.同时,也提出了一种混合的调制策略.分析了不同调制策略在不同的电平数下所具有的特性.讨论了逆变器电平数的增加对于输出电压频谱的影响,也研究了过调制对于输出电压频谱的影响.
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| 关 键 词： | 多电平 多载波PWM 线性调制 过调制 |
Research of Multilevel Inverters Multicarrier PWM Modulation Strategies |
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| Zhou Jinghua,Yang Zhen,Su Yanmin.Research of Multilevel Inverters Multicarrier PWM Modulation Strategies[J].Electric Drive,2005,35(1):23-27. |
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| Authors: | Zhou Jinghua Yang Zhen Su Yanmin |
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| Affiliation: | Zhou Jinghua Yang Zhen Su Yanmin |
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| Abstract: | This paper introduces the idea of multilevel inverter. The different multilevel inverter structures are compared. Various multicarrier PWM modulation strategies are analyzed and researched. By the analysis to the unfiltered inverter output voltage, the harmonic characteristics of various multicarriel PWM modulation methods in the linear modulation regions are compared. At the same, a hybrid modulation strategy is presented. Under the different levels, the characteristics of various modulation strategies are analyzed. The effect of inverter levels increases and overmodulation to output voltage spectrum is discussed. |
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| Keywords: | multilevel multicarrier PWM linear modulation overmodulation |
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