Analysis, Comparison & Simulation of Three Phase 9 Level Cascaded Multilevel Inverter with Advanced Modulation Control Techniques using Less Switches

2018 Second International Conference on Advances in Electronics, Computers and Communications (ICAECC) Pub Date : 2018-02-01 DOI:10.1109/ICAECC.2018.8479459

Mahesh Kumar

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引用次数: 5

Abstract

The multilevel converter is capable of achieving higher power by using a series of power switches with several low voltage DC sources to perform power conversion by synthesizing a staircase voltage waveform. In the field of power electronics the multilevel inverter permits to reach higher voltages with low harmonics content. Rise in the number of levels, the harmonic level of output voltage will fall gradually. In this paper a three phase 9 level cascaded multilevel inverter is been simulated with minimum switching devices and gate circuitry. The classical three phase MLI utilizes 48 switches whereas the minimum circuit utilizes 33 switches thus eliminating 15 switches in the usage. The output is been verified by extracting gate signals from various control techniques like SPWM POD, Harmonic Injected, Trapezoidal & Triangular Modulation. The analysis and comparison is done with THD, and least THD is been found with triangular modulation with the help of MATLAB/SIMULINK tool.

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采用少开关先进调制控制技术的三相9电平级联多电平逆变器的分析、比较与仿真

该多电平变换器通过使用一系列具有多个低压直流源的功率开关，通过合成阶梯电压波形来进行功率转换，从而能够获得更高的功率。在电力电子领域，多电平逆变器可以在低谐波含量的情况下达到更高的电压。在电平数上升时，输出电压的谐波电平将逐渐下降。本文采用最小的开关器件和门电路，对一种三相9电平级联多电平逆变器进行了仿真。经典的三相MLI利用48个开关，而最小电路利用33个开关，从而在使用中消除了15个开关。通过提取各种控制技术(如SPWM POD，谐波注入，梯形和三角形调制)的门信号来验证输出。利用MATLAB/SIMULINK工具分析比较了三角调制的三次谐波损耗，得到了三次谐波损耗最小的结果。

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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2018 Second International Conference on Advances in Electronics, Computers and Communications (ICAECC)

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