THD Reduction in Execution of A Nine Level Single Phase Inverter

E. P. Shahina, K. Aravind, T. Jarin
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引用次数: 3

Abstract

Multilevel Inverters (MLI) are usually utilized in high voltage and high force applications because of their lower filtering requirements, smaller dv/dt changes and better EMI/EMC execution. This paper introduces an ideal nine level staggered inverter; by utilizing distinctive design of switch and source blend. Staggered inverter is a demonstrated technique to filter necessities or size of the filter can be decreased. Right now, sort of circuit structures has been utilized; one for reversal reason and another is utilized for level decider. The level decider circuit includes 4 numbers of sources with a fixed voltage, 4 IGBT switches and 4 diodes. The reversal circuit is an ordinary H Bridge includes 4 switches and load. In between the each level high frequency PWM additionally joined which means to diminish the essential. The MATLAB based nine level single stage inverter is tried with R and RL load detailed less THD toward the finish of the paper.
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九电平单相逆变器执行中THD的减小
多电平逆变器(MLI)通常用于高压和高力应用,因为它们具有较低的滤波要求,较小的dv/dt变化和更好的EMI/EMC执行能力。本文介绍了一种理想的九电平交错逆变器;采用独特的开关和源混合设计。交错逆变器是一种演示技术,以过滤的必需品或过滤器的大小可以减少。现在,一种电路结构已经被使用;一个用于反转原因,另一个用于电平决定。电平决定电路包括4个固定电压源,4个IGBT开关和4个二极管。反转电路是一个普通的H桥,包括4个开关和负载。在每级之间额外加入高频PWM,这意味着必不可少的减小。本文最后对基于MATLAB的九电平单级逆变器进行了R和RL负载的试验,详细介绍了THD。
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