Comprehensive Comparative Analysis of Impedance-Source Networks for DC and AC Application

• Main Authors: Oleksandr Husev, Tatiana Shults, Dmitri Vinnikov, Carlos Roncero-Clemente, Enrique Romero-Cadaval, Andrii Chub
• Format: Article
• Language: English
• Published: MDPI AG 2019-04-01
• Series: Electronics
• Subjects: impedance-source inverter; shoot-through; dc-dc converter; dc-ac converter
• Online Access: https://www.mdpi.com/2079-9292/8/4/405

This paper presents a comprehensive analytical comparison of the impedance-source-based dc-dc and dc-ac converters in terms of the passive component count and size, semiconductor stress, and range of input voltage variation. The conventional solution with a boost converter was considered as a reference value. The main criterion of the comprehensive comparison was the energy stored in the passive elements, which was considered both under a constant and predefined high frequency current ripple in the inductors and the voltage ripple across the capacitors. Main impedance-source converters with or without a transformer and with or without inductor coupling were analyzed. Dc-dc and dc-ac applications were considered. Selective simulation results along with experimental verification are shown. The conclusions provide a selection guide of impedance-source networks for different applications taking into account its advantages and disadvantages.