I. Introduction
With the rapid development of electric vehicles and photovoltaic power generation during the past decade, many studies on these applications have focused on the power conversions, which are considered to affect the entire performance of the system and therefore can make them more attractive. The conventional power converters for such applications usually consist of a boost converter for extending their acceptable input voltage range, and a three-phase voltage source inverter (VSI), which converts dc into ac. The use of high-performance power semiconductor devices is the most effective approach to achieve a higher efficiency and a high power density of the power converters.