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New approach for harmonic mitigation in single-phase five-level CHBMI with fundamental frequency switching

机译：具有基频切换的单相五电平CHBMI谐波抑制的新方法

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The main objective of this paper is to study and analyse the voltage output waveform of a multilevel inverter, to suggest a new approach for harmonic mitigation improving the converter performance. These last type of converters represent a new technology in the field of DC/AC electrical energy conversion, presenting advantages respect to the traditional converters. In fact, the multilevel power converters present a low harmonic content and a high voltage level. The paper considers a five-level single-phase cascaded H-bridge inverter and fundamental frequency modulation techniques. The voltage waveform analysis has allowed to identify a working area of the converter where there are lowest values of the considered harmonic amplitude. The simulated behaviour of the model of the converter, with the logic piloting gate signals, has been obtained in Matlab-Simulink environment.
机译：本文的主要目的是研究和分析多电平逆变器的电压输出波形，以提出一种降低谐波的新方法，以提高转换器的性能。这些最后一种类型的转换器代表了DC / AC电能转换领域中的一种新技术，相对于传统转换器而言具有优势。实际上，多电平功率转换器呈现出低谐波含量和高电压电平。本文考虑了一种五级单相级联H桥逆变器和基本频率调制技术。通过电压波形分析，可以确定转换器的工作区域，在该区域中存在所考虑的谐波幅度的最小值。已在Matlab-Simulink环境中获得了带有逻辑导频门信号的转换器模型的仿真行为。

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