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A new hybrid multilevel inverter topology with harmonics profile improvement

机译:改进了谐波轮廓的新型混合多电平逆变器拓扑

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摘要

A new hybrid multilevel inverter topology with harmonics profile improvement is presented in this paper. From the literature, it is agreed that hybrid multilevel inverter with its DC sources configured in trinary fashion presents the largest output levels and the lowest Total Harmonics Distortion (THD) percentage. However the output contains low order harmonics due to the impossibility of modulating all adjacent voltage levels at high frequency. With this proposed topology, all adjacent voltage levels are possible to be modulated at high frequency. As a result, the output voltage waveform presents better harmonics profile. The proposed topology and its modulation scheme are presented and verified with simulation results.
机译:本文提出了一种改进了谐波分布的新型混合多电平逆变器拓扑。从文献中可以看出,以三进制方式配置其直流电源的混合多电平逆变器具有最大的输出电平和最低的总谐波失真(THD)百分比。但是,由于不可能在高频下调制所有相邻电压电平,因此输出包含低阶谐波。利用这种提议的拓扑,所有相邻电压电平都可以在高频下进行调制。结果,输出电压波形呈现出更好的谐波轮廓。给出了提出的拓扑结构及其调制方案,并通过仿真结果进行了验证。

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