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An Isolated High-Power Integrated Charger in Electrified-Vehicle Applications

In English

Författare

Summary, in English

For electric and hybrid vehicles that use grid power to charge the battery, traction circuit components are not normally engaged during the charging time; hence, there is a possibility of using the traction circuit components in the charger circuit to have an onboard integrated charger. An isolated high-power integrated charger based on a special electrical machine with a double set of stator windings is described. Through the reconfiguration of the motor stator windings in the charging mode, a six-terminal machine is achieved. The so-called motor/generator acts as an isolated three-phase power source after synchronization with the utility grid in the charging mode. This rotary isolated power source constitutes a three-phase boost rectifier (battery charger) with full utilization of the inverter. The motor windings are reconfigured by a relay-based switching device for the charging and traction modes. This paper presents the mathematical model of the motor/generator and explains the system's functionality for the traction and charging modes. Furthermore, the charger grid synchronization and charge control are described. Finally, the simulation results are presented for a practically designed system with a traction power of 25 kW and a possible charge power of 12.5 kW.

Publiceringsår

2011

Språk

Engelska

Sidor

4115-4126

Publikation/Tidskrift/Serie

IEEE Transactions on Vehicular Technology

Volym

60

Issue

9

Dokumenttyp

Artikel i tidskrift

Förlag

IEEE - Institute of Electrical and Electronics Engineers Inc.

Ämne

  • Other Electrical Engineering, Electronic Engineering, Information Engineering

Nyckelord

  • Electrified vehicles
  • integrated battery charger
  • isolated charger

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 1939-9359