Double star chopper cell converter for battery electric vehicles with inter-module SoC balancing and fault tolerant control

Author

Kandasamy, Karthik ; Vilathgamuwa, D.M. ; King-Jet Tseng

Author_Institution

Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore, Singapore

fYear

2014

Firstpage

2991

Lastpage

2996

Abstract

A modularized battery system with Double Star Chopper Cell (DSCC) based modular multilevel converter is proposed for a battery operated electric vehicle (EV). A design concept for the modularized battery micro-packs for DSCC is described. Multidimensional pulse width modulation (MD-PWM) with integrated inter-module SoC balancing and fault tolerant control is proposed and explained. The DSCC can be operated either as an inverter to drive the EV motor or as a synchronous rectifier connected to external three phase power supply equipment for charging the battery micro-packs. The methods of operation as inverter and synchronous rectifier with integrated inter-module SoC balancing and fault tolerant control are discussed. The proposed system operation as inverter and synchronous rectifier are verified through simulations and the results are presented.

Keywords

battery powered vehicles; fault tolerant control; power convertors; power supplies to apparatus; rectifiers; DSCC; EV motor; battery operated electric vehicle; double star chopper cell converter; external three phase power supply equipment; fault tolerant control; integrated intermodule SoC balancing control; modular multilevel converter; modularized battery micropacks; synchronous rectifier; Batteries; Choppers (circuits); Inverters; Modulation; Rectifiers; Switches; System-on-chip; Double Star Chopper Cell (DSCC); SoC balancing; battery electric vehicle; fault tolerant; modular energy source; multilevel converter;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics Society, IECON 2014 - 40th Annual Conference of the IEEE

Type

conf

DOI

10.1109/IECON.2014.7048935

Filename

7048935