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n级逆变器SVPWM调制零序电压优化算法

, PP. 158-164

Keywords: 多电平,空间矢量调制,零序电压,优化

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Abstract:

多电平逆变器输出的零序电压对电机的运行性能和老化均存在严重威胁,故抑制逆变器输出的零序电压对优化电机的运行状态和电机的保养有实际价值。为了抑制零序电压,本文通过分析n级逆变器的零序电压分布规律,给出了n级逆变器的零序电压优化调制算法。该方法在不增加任何硬件的基础上,使得输出的零序电压被控制在最小变化范围,同时保证输出波形的质量。最后的仿真和实验结果表明了本文的理论分析以及所提出的抑制零序电压方法的正确性和可行性。

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