A4 Conference proceedings

Analyses of Modular Windings of a Traction Motor in a Hybrid Bus


Publication Details
Authors: Lindh Pia, Kärkkäinen Hannu, Pyrhönen Juha, Immonen Paula, Aarniovuori Lassi
Publication year: 2017
Language: English
Title of parent publication: 2017 IEEE International Electric Machines and Drives Conference (IEMDC)
ISBN: 978-1-5090-4282-1
eISBN: 978-1-5090-4281-4
JUFO-Level of this publication: 0
Open Access: Not an Open Access publication

Abstract

Winding constructions are
studied for a traction motor utilized in a hybrid bus. In vehicle applications, acceleration and
deceleration require high torque. Thereby high current density is required
intermittently while volume is adjusted to minimum. However, mobile converters
may have a limited current output. This current amount is usually not enough
for heavy drive cycles. Therefore, the authors designed a traction machine,
which has two separate windings to be supplied by two separate converters.
Therefore, the motor total current may reach higher values. Another important
benefit is that the machine can be driven even when one winding or one supply
unit is broken. In transportation use this may give the bus driver the possibility
to drive to the destination or to a repair workshop. Several separated winding arrangements were
designed and simulated with finite element method. A hybrid bus is designed and
constructed at Lappeenranta University of Technology and the modular winding
motor presented here has been applied in the bus.


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Last updated on 2018-19-10 at 07:55