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

Haghbin, Saeid; Lundmark, Sonja; Alaküla, Mats LU and Carlson, Ola (2011) In IEEE Transactions on Vehicular Technology 60(9). p.4115-4126
Abstract
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... (More)
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. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Electrified vehicles, integrated battery charger, isolated charger
in
IEEE Transactions on Vehicular Technology
volume
60
issue
9
pages
4115 - 4126
publisher
IEEE--Institute of Electrical and Electronics Engineers Inc.
external identifiers
  • wos:000297945900003
  • scopus:83655191394
ISSN
1939-9359
DOI
10.1109/TVT.2011.2162258
language
English
LU publication?
yes
id
06e56461-5e68-491c-ae57-1a22d76a01fa (old id 2348613)
date added to LUP
2012-02-24 11:07:40
date last changed
2017-11-12 03:07:09
@article{06e56461-5e68-491c-ae57-1a22d76a01fa,
  abstract     = {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.},
  author       = {Haghbin, Saeid and Lundmark, Sonja and Alaküla, Mats and Carlson, Ola},
  issn         = {1939-9359},
  keyword      = {Electrified vehicles,integrated battery charger,isolated charger},
  language     = {eng},
  number       = {9},
  pages        = {4115--4126},
  publisher    = {IEEE--Institute of Electrical and Electronics Engineers Inc.},
  series       = {IEEE Transactions on Vehicular Technology},
  title        = {An Isolated High-Power Integrated Charger in Electrified-Vehicle Applications},
  url          = {http://dx.doi.org/10.1109/TVT.2011.2162258},
  volume       = {60},
  year         = {2011},
}