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A topological review on recent improvements of three-phase impedance source inverter

机译：三相阻抗源逆变器最新改进的拓扑综述

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Voltage source inverter (VSI) and current source inverter (CSI) have been used as the main power converters for many years. However (VSI) and (CSI) have a limited voltage gain. The growth of renewable energy usage increases the need to improve wide gain range power converters. Impedance source inverter (ZSI) has been introduced to limit the drawbacks of traditional inverters. (ZSI) has the ability of buck, boost and inversion in a single stage construction without increasing the number of active switches with the privilege of simple control methods. Nevertheless, (ZSI) suffers from many drawbacks such as high voltage stresses, non-linear relations and large size impedance network. Since it was introduced, many researchers have given their focus to improve (ZSI) by filling those gaps. In this paper a comprehensive survey of (ZSI) topology improvements for various applications is carried out with a discussion of the basic operation of (ZSI) and its PWM control methods.
机译：电压源逆变器（VSI）和电流源逆变器（CSI）用作主电源转换器已有很多年了。但是（VSI）和（CSI）的电压增益有限。可再生能源使用量的增长增加了对改善宽增益范围功率转换器的需求。阻抗源逆变器（ZSI）已被引入以限制传统逆变器的缺点。 ZSI（ZSI）具有单级构造的降压，升压和反相功能，无需借助简单的控制方法即可增加有源开关的数量。然而，（ZSI）遭受许多缺点，例如高压应力，非线性关系和大型阻抗网络。自从引入以来，许多研究人员已经着重于通过填补这些空白来改进（ZSI）。本文讨论了（ZSI）的基本操作及其PWM控制方法，对（ZSI）拓扑在各种应用中的改进进行了全面的调查。

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