Comparative Analysis of 51-level Hybrid Multilevel Inverter and 57-level Switched-capacitor Boost Multilevel Inverter

2023 IEEE International Conference on Automatic Control and Intelligent Systems (I2CACIS) Pub Date : 2023-06-17 DOI:10.1109/I2CACIS57635.2023.10193591

K. H. Law, Nur Atiqah Jefry, S. Ang, Yew Wei Sia, Sheikh Tanzim Meraj, Sheik Mohammed Sulthan

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Abstract

The invention of hybrid multilevel inverters (HMI) and switched-capacitor boost multilevel inverters (SCBMI) has revolutionized power electronic systems by enabling the generation of extremely high AC voltage-level using asymmetrical DC configurations. This paper presents the comparison of the 51-level HMI and 57-level SCBMI topologies in terms of the total number of components and the total harmonic distortion (THD) across different modulation indices (i.e., 0.2, 0.4, 0.6, 0.8, and 1). In addition, the effective switching frequency and the fundamental frequency component of the AC voltage waveforms were also compared. Both the presented inverter topologies were driven by the nearest level control (NLC) modulation technique under one resistive-inductive RL loading condition. MATLAB Simulink simulation studies are utilized to validate the theoretical study of the differences between the topologies.

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51电平混合多电平逆变器与57电平开关电容升压多电平逆变器的比较分析

混合多电平逆变器(HMI)和开关电容升压多电平逆变器(SCBMI)的发明通过使用不对称直流配置产生极高的交流电压水平，彻底改变了电力电子系统。本文比较了51级HMI和57级SCBMI拓扑在不同调制指数(即0.2、0.4、0.6、0.8和1)下的总分量和总谐波失真(THD)。此外，还比较了交流电压波形的有效开关频率和基频分量。本文提出的两种逆变器拓扑结构都是在一种电阻-电感RL负载条件下由最近电平控制(NLC)调制技术驱动的。利用MATLAB Simulink仿真研究验证了理论研究中拓扑结构之间的差异。

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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2023 IEEE International Conference on Automatic Control and Intelligent Systems (I2CACIS)

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