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A Space Vector Modulated Quasi-Z-Source Based Four-Level VSI for PV Application

机译:A Space Vector Modulated Quasi-Z-Source Based Four-Level VSI for PV Application

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摘要

A Four-level Inverter system is presented in this paper, which employs a Space Vector Modulated Quasi-Z-Source to obtain high-boost inversion for PV applications. Unlike the conventional Multilevel Inverters, such as Neutral-Point Clamped (NPC) and the Cascaded H-Bridge (CHB) configurations, the proposed inverter uses only 19 power semiconductor switching devices and three Quasi-Impedance networks. It is also shown that by employing level-shifted carrier modulation, one can achieve higher shoot through duty ratio, enhancing the boosting capability of the proposed inverter. The performance of the proposed power circuit is assessed with simulation studies, which reveal its applicability for PV applications.
机译:本文介绍了一种四电平逆变器系统,该系统采用空间矢量调制的准Z源实现光伏应用的高升压逆变。与中性点箝位(NPC)和级联H桥(CHB)等传统多电平逆变器不同,该逆变器仅使用19个功率半导体开关器件和三个准阻抗网络。研究还表明,通过采用电平移位载波调制,可以实现更高的直通占空比,从而提高逆变器的升压能力。通过仿真研究评估了该电源电路的性能,揭示了其在光伏应用中的适用性。

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