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JPE, Vol. 17, No. 5, September 2017
Modified Capacitor-Assisted Z-Source Inverter Topology with Enhanced Boost Ability
Anh-Vu Ho and Tae-Won Chun
Area High Power Converters
Abstract This paper presents a novel topology named a modified capacitor-assisted Z-source inverter (MCA-ZSI) based on the traditional ZSI. The impedance network of the proposed MCA-ZSI consists of two symmetrical cells coupled with two capacitors with an X-shape structure, and each cell has two inductors, two capacitors, and one diode. Compared with other topologies based on switched ZSI with the same number of components used at impedance network, the proposed topology provides higher boost ability, lower voltage stress across inverter switching devices, and lower capacitor voltage stress. The improved performances of the proposed topology are demonstrated in the simulation and experimental results.
Keyword Boost ability,Impedance network,Inverter,Switched-capacitor,Z-source inverter
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