DRIVE METHOD AND APPARATUS FOR AN ELECTRIC MACHINE

WIPO Patent Application WO/2012/069229

A3

The invention relates to a method for driving an electric machine (14) in the motor runup mode by means of power electronics (18), in particular for use in a motor vehicle (10), wherein the power electronics (18) have a plurality of driveable power switches (26), which are connected for the purpose of supplying an electrical current (I) to the electric machine (14) in polyphase form, wherein the power electronics (18) are driven in such a way that the electric machine (14) emits a runup torque (t), and wherein the power electronics (18) are driven, for outputting the runup torque (t), in such a way that the switching position of at least two of the power switches (26) is changed, with the result that the power switches (26) are subjected to a more uniform load.

WO/2011/080822	POWER CONVERSION DEVICE FOR ELECTRIC VEHICLE
JP2009219239	MOTOR CONTROL DEVICE
JP3798700	INDUCTION MOTOR CONTROLLER

MERKEL TINO (DE)
KRETSCHMER MARKUS (DE)
GOETTING GUNTHER (DE)

PCT/EP2011/066413

January 31, 2013

September 21, 2011

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BOSCH GMBH ROBERT (DE)
MERKEL TINO (DE)
KRETSCHMER MARKUS (DE)
GOETTING GUNTHER (DE)

H02P21/00; B60L50/15; B60L50/16; H02P6/20; H02P29/00

DE102007031548A1	2009-01-08
JPS6434190A	1989-02-03

CONSOLI A ET AL: "Sensorless control of PM synchronous motors at zero speed", CONFERENCE RECORD OF THE 1999 IEEE INDUSTRY APPLICATIONS CONFERENCE. THIRTY-FORTH IAS ANNUAL MEETING (CAT. NO.99CH36370), IEEE, IEEE PISCATAWAY, NJ, USA, vol. 2, 3 October 1999 (1999-10-03), pages 1033 - 1040, XP010355328, ISBN: 978-0-7803-5589-7, DOI: 10.1109/IAS.1999.801632

ROBERT BOSCH GMBH (Stuttgart, DE)

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