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Z-Source Inverter: Topology Improvements Review

机译：Z源逆变器：拓扑改进评论

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摘要

One of the most promising power electronics converter topologies is the Z-source inverter (ZSI). The ZSI is an emerging topology for power electronics dc?ac converters with interesting properties such as buck-boost characteristics and single-stage conversion. A two-port network, composed of two capacitors and two inductors connected in an X shape, is employed to provide an impedance source (Z-source) network, coupling the inverter main circuit to the dc input source. The ZSI advantageously uses the shoot-through (ST) state to boost the input voltage, which improves the inverter reliability and enlarges its application fields. In comparison with other power electronics converters, it provides an attractive single stage dc?ac conversion with buck-boost capability with reduced cost, reduced volume, and higher efficiency due to a lower component number. For emerging power-generation technologies, such as fuel cells, photovoltaic (PV) arrays, and wind turbines, and new power electronic applications such as electric and hybrid vehicles, the ZSI is a very promising and competitive topology [1]-[4].
机译：Z-source逆变器（ZSI）是最有前途的电力电子转换器拓扑之一。 ZSI是电力电子dcac转换器的新兴拓扑，具有有趣的特性，例如降压-升压特性和单级转换。采用由两个以X形连接的电容器和两个电感器组成的两端口网络来提供阻抗源（Z源）网络，将逆变器主电路耦合到直流输入源。 ZSI有利地使用直通（ST）状态来提高输入电压，从而提高了逆变器的可靠性并扩大了其应用领域。与其他功率电子转换器相比，它提供了一种具有降压-升压功能的有吸引力的单级dcac转换，具有成本低，体积小，组件数量少，效率高的优点。对于新兴的发电技术，例如燃料电池，光伏（PV）阵列和风力涡轮机，以及新的电力电子应用，例如电动和混合动力汽车，ZSI是一种非常有前途且具有竞争力的拓扑结构[1]-[4] 。

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