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An Isolated High-Power Integrated Charger in Electrified Vehicle Applications

Saeid Haghbin (Institutionen för energi och miljö, Elteknik) ; Sonja Lundmark (Institutionen för energi och miljö, Elteknik) ; Mats Alakula ; Ola Carlson (Institutionen för energi och miljö, Elteknik)
IEEE Transactions on Vehicular Technology (0018-9545). Vol. 60 (2011), 9, p. 4115-4126.
[Artikel, refereegranskad vetenskaplig]

For electric and hybrid vehicles using grid power to charge the battery, traction circuit components are not normally engaged during the charging time; hence, there is a possibility to use them in the charger circuit to have an on-board integrated charger. An isolated high-power integrated charger based on a special electrical machine with a double set of stator windings is described. Through 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. Further, 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.

Denna post skapades 2011-07-08. Senast ändrad 2016-09-26.
CPL Pubid: 143304


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Institutioner (Chalmers)

Institutionen för energi och miljö, Elteknik



Chalmers infrastruktur