九电平逆变器多载波开关技术分析

2018 Second International Conference on Computing Methodologies and Communication (ICCMC) Pub Date : 2018-02-01 DOI:10.1109/ICCMC.2018.8487776

Kamlesh D. Wanjari, P. Salodkar, M. Waghmare

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引用次数: 2

摘要

随着时间的推移，由于传统逆变器的高总谐波失真和不理想的运行，对多电平逆变器的需求不断增加。级联h桥(CHB)多电平逆变器结构简单，所需功率元件少，比其他类型的拓扑结构更可靠，因此更受欢迎。但是为了提高逆变器的输出水平，需要更多的元件，这就造成了更大的开关损耗。因此，我们正在朝着非对称拓扑的方向发展，这有助于用更少的功率元件获得更多的电平。本文设计了一种九电平非对称CHB逆变器，采用八个电源开关和两个1:3比例的直流电压源。对载波方案、幅度指数和调制指数进行了分析。利用MATLAB Simulink软件进行了仿真计算。

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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Analysis of Multicarrier Switching Techniques for Nine Level Inverter

The demand for multilevel inverter have increased over time due to the high total harmonic distortion and unsatisfactory operation of conventional inverter. Cascaded H-bridge (CHB) multilevel inverter is simple, requiring fewer power components and more reliable than other types of topology so it is more preferable. But to increase the level of inverter output more number of components are required which makes more switching losses. So we are going toward asymmetrical topology which helps to get more number of levels with less number of power components. In this paper nine-level asymmetric CHB inverter is presented with eight power switches and two dc voltage sources of 1:3 proportion. The analysis is done for carrier scheme, amplitude index, and modulation index. Results are obtained with MATLAB Simulink software.

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2018 Second International Conference on Computing Methodologies and Communication (ICCMC)

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