基于遗传算法的15电平逆变器不同拓扑的最优切换算法

2019 5th Conference on Knowledge Based Engineering and Innovation (KBEI) Pub Date : 2019-02-01 DOI:10.1109/KBEI.2019.8734966

A. A. K. Arani, A. Ghasemi, H. Karami, M. Akhbari, G. Gharehpetian

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引用次数: 3

摘要

由于多级逆变器的输出波形呈阶梯状，因此与双电平逆变器相比，多级逆变器具有更好的电能质量因数。MLI的开关算法和总谐波失真(THD)是MLI运行中的重要问题。本文研究了三种15电平逆变器拓扑结构的THD和开关算法。为了得到最优的开关算法，提出了基于thd的输出电压波形目标函数，并利用遗传算法对其进行了优化。在MATLAB/Simulink中对这些拓扑进行了仿真，验证了遗传算法的结果。结果表明，非对称15电平逆变器的性能优于其他拓扑结构。

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Optimal Switching Algorithm for Different Topologies of 15-Level Inverter Using Genetic Algorithm

Multi-level inverters (MLIs) have better power quality factors compared with two level inverters, because of their staircase output waveform. Switching algorithm and Total Harmonic Distortion (THD) of the MLIs are important issues in the MLI operation. In this paper, THD and switching algorithm of three 15-level inverters topologies are investigated. In order to obtain their optimal switching algorithm, a THD-based objective function for output voltage waveform is expressed and optimized by using Genetic Algorithm (GA). Simulation of these topologies in MATLAB/Simulink is carried out to validate the results of GA. As shown in the paper, asymmetrical 15-level inverter has better performance than other topologies.

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2019 5th Conference on Knowledge Based Engineering and Innovation (KBEI)

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