An Integrated 20-kW Motor Drive and Isolated Battery Charger for Plug-In Vehicles
Artikel i vetenskaplig tidskrift, 2013

For vehicles using grid power to charge the battery, traction circuit components are not normally engaged during the charging time, so there is a possibility to use them in the charger circuit to have an on-board integrated motor drive and battery charger. An isolated high-power three-phase integrated motor drive and charger based on a split-phase permanent magnet motor is presented in this paper. The motor winding connections are reversible by a relay-based switching device for traction and battery charging. In traction mode, the motor is a classical three-phase motor, but in charging mode it is a rotating isolating transformer providing a three-phase voltage source for the inverter to charge the battery. A mathematical model of the motor with six stator windings is presented for an arbitrary phase shift in windings. For the charging mode, the split-phase motor grid synchronization process and charge control are explained including the developed controller. A 20 kW system is designed and implemented to verify the proper operation of the proposed system. Simulation and practical results are provided to show the system performance in terms of functionality, dynamic response, and efficiency. Moreover, some discussions, recommendations, and limitations are provided to give more practical insights.

plug-in vehicles

Integrated motor drive and battery charger

isolated battery charger

split-phase permanent magnet (PM) motor model

winding reconnection


Saeid Haghbin

Chalmers, Energi och miljö, Elkraftteknik

kashif khan

Kungliga Tekniska Högskolan (KTH)

Shuang Zhao

Chalmers University of Technology

Mats Alakula

Lunds universitet

Sonja Lundmark

Chalmers, Energi och miljö, Elkraftteknik

Ola Carlson

Chalmers, Energi och miljö, Elkraftteknik

IEEE Transactions on Power Electronics

0885-8993 (ISSN)

Vol. 28 4013 - 4029


Annan elektroteknik och elektronik