Reduced-Parts Three-Phase Inverters: A Comparative Study

In this paper, potential applications of the reduced-parts three-phase inverters in hybrid electric vehicles (HEV s) are analyzed based on the review and comparative study of the existing reduced-parts inverters. Two categories of inverters are considered: the reduced switch count inverters and the reduced capacitance inverters. The comparative results show that the existing reduced switch count inverters face challenges in terms of cost and power efficiency in HEV applications. Reduced capacitance inverters have the potential to reduce the cost and improve the power density of the traction inverters considerably.