Effect of switching frequency of soft switched inverter on electric vehicle system

Author

Choi, Jae-Young ; Herwald, M.A. ; Boroyevich, Dushan ; Lee, Fred C.

Author_Institution

Bradley Dept. of Electr. Eng., Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA

fYear

1998

fDate

22-23 Oct 1998

Firstpage

63

Lastpage

69

Abstract

The electric vehicle (EV) induction motor has smaller resistance and inductance than the general induction motor in order to meet the load requirement of the EV driving system. To improve the quality of the motor phase currents, the switching frequency must be increased which will lower the ripple current into the induction motor. This makes the inverter conduction losses and motor losses decrease, and the DC link capacitance smaller. On the other hand, it makes the inverter switching losses increase. However, increased switching loss can be minimized by soft-switching topologies. This paper shows the effects of the switching frequency and soft-switching topologies on the overall efficiency of the specified EV system with simulation results

Keywords

capacitance; electric vehicles; induction motor drives; invertors; losses; switching circuits; DC link capacitance reduction; EV driving system; electric vehicle system; inductance; induction motor; inverter conduction losses reduction; inverter switching losses increase; motor losses reduction; motor phase currents quality; resistance; ripple current reduction; soft switched inverter; soft-switching topologies; switching frequency; switching frequency effect; Capacitance; DC motors; Electric resistance; Electric vehicles; Inductance; Induction motors; Inverters; Switching frequency; Switching loss; Topology;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics in Transportation, 1998

Conference_Location

Dearborn, MI

Print_ISBN

0-7803-4398-0

Type

conf

DOI

10.1109/PET.1998.731059

Filename

731059