Efficiency considerations of load side soft-switching inverters for electric vehicle applications

Author

Dong, Wei ; Choi, Jae-Young ; Li, Yong ; Yu, Huijie ; Lai, Jason ; Boroyevich, Dusan ; Lee, Fred C.

Author_Institution

Center for Power Electron. Syst., Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA

Volume

2

fYear

2000

fDate

6/22/1905 12:00:00 AM

Firstpage

1049

Abstract

This paper critically evaluates the efficiency of load side soft-switching inverters for electric vehicle (EV) drive applications. Five types of load side soft-switching inverters are studied, including the auxiliary resonant commutated pole inverter (ARCP), the zero-current-transition (ZCT) inverter, the zero-voltage-transition (ZVT) inverter with coupled inductors (ZVTCI), the ZVT inverter with a single switch (ZVTSS), and the ZVT inverter with a single inductor (ZVTSI). Loss categorization methods are developed using simplified device models in order to reveal the mechanism of efficiency improvement. It is shown that the ZVTSI and the ZVTSS have poor efficiency performance compared to the hard-switching inverter because of the extra turn-off of main switches and the nonzero-current-switching for the auxiliary devices. The ARCP, the ZCT inverter and the ZVTCI show substantial energy savings. Besides, the variable timing soft-switching control can further increase efficiency in ZVT inverters

Keywords

DC-AC power convertors; PWM invertors; electric vehicles; power semiconductor switches; resonant power convertors; switching circuits; auxiliary resonant commutated pole inverter; coupled inductors; efficiency considerations; efficiency performance; electric vehicle applications; energy savings; load side soft-switching inverters; main switch turn-off; single inductor ZVS invertor; single switch ZVS invertor; variable timing soft-switching control; zero-current-transition inverter; zero-voltage-transition inverter; Application software; Diodes; Electric vehicles; Inductors; Insulated gate bipolar transistors; Pulse width modulation inverters; Resonance; Switches; Switching loss; Timing;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition, 2000. APEC 2000. Fifteenth Annual IEEE

Conference_Location

New Orleans, LA

Print_ISBN

0-7803-5864-3

Type

conf

DOI

10.1109/APEC.2000.822818

Filename

822818