A novel three phase 7-level asymmetrical multilevel inverter with reduced number of power electronic switches

Kamaldeep, J. Kumar
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引用次数: 3

Abstract

In the modern set up of generation, transmission, distribution and electric power utilization, dc to ac power conversion is a very important technology and multilevel inverter are the best choice for this converion as it has many advantages over two level inverter. In this paper, a new asymmetrical multilevel inverter topology for 7-level inverter is proposed which requires less number of switches, driver circuits and dc voltage sources as compared to other asymmetrical topologies and conventional multilevel inverter topologies. In the proposed topology, six power electronic switches and two dc voltage sources are required for generating 7-level in single phase output voltage. Performance of the proposed topology to generate positive, zero and negative level have been evaluated in terms of Total Harmonic Distortion (THD) in the output voltage using simulation in MATLAB environment. To validate the performance of proposed topology various waveforms and simulation results are presented in the paper. Fundamental switching control technique is used to operate the various switches.
一种新颖的减少电力电子开关数量的三相7电平非对称多电平逆变器
在现代发电、输电、配电和电力利用的设置中,直流到交流的功率转换是一项非常重要的技术,而多电平逆变器是这种转换的最佳选择,因为它比两电平逆变器有许多优点。本文提出了一种新的非对称多电平逆变器拓扑结构,用于7电平逆变器,与其他非对称拓扑结构和传统多电平逆变器拓扑结构相比,该拓扑结构所需的开关、驱动电路和直流电压源数量更少。在提出的拓扑结构中,需要6个电力电子开关和2个直流电压源来产生7电平的单相输出电压。根据输出电压的总谐波失真(THD),在MATLAB环境中对所提出的拓扑产生正、零和负电平的性能进行了评估。为了验证所提出的拓扑结构的性能,文中给出了各种波形和仿真结果。基本开关控制技术用于控制各种开关。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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