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Title:
PERMANENT-MAGNET-EXCITED ELECTRIC MACHINE OPERATED WITHOUT A SENSOR, IN PARTICULAR FOR A FUEL CELL UNIT OF A MOTOR VEHICLE, AND A METHOD OF OPERATING A PERMANENT-MAGNET-EXCITED ELECTRIC MACHINE OPERATED WITHOUT A SENSOR
Document Type and Number:
WIPO Patent Application WO/2009/106223
Kind Code:
A3
Abstract:
The invention relates to a permanent-magnet-excited electric machine (1) operated without a sensor, in particular for a fuel cell unit of a motor vehicle, in particular an automobile, having a stator (2) comprising a stator winding (3) and a rotor mounted rotationally movably relative to the stator (2), which rotor comprises at least one permanent magnet with a north pole region and a south pole region, and having an open- and/or closed-loop control means (5), which is coupled to the stator winding (3) and is designed to energize the stator winding (3), wherein the open- and/or closed-loop control means (5) is designed to energize the stator winding (3) when the electric machine (1) is at a standstill and the rotor may be fixed in a neutral angular position other than a dead center position as a result of said energization when at a standstill.

Inventors:
KNOOP, Andreas (Mittlere Beutau 71, Esslingen, 73728, DE)
BADER, Michael (Raubeckstrasse 18, Dürnau, 73105, DE)
Application Number:
EP2009/000896
Publication Date:
November 18, 2010
Filing Date:
February 10, 2009
Export Citation:
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Assignee:
DAIMLER AG (Mercedesstrasse 137, Stuttgart, 70327, DE)
FORD GLOBAL TECHNOLOGIES LLC (Suite 800 South, 330 Town Center DriveDearborn, MI, 48126, US)
KNOOP, Andreas (Mittlere Beutau 71, Esslingen, 73728, DE)
BADER, Michael (Raubeckstrasse 18, Dürnau, 73105, DE)
International Classes:
H02P6/08; B60L7/24; B60L11/18; F16D65/28; H02P1/02; H02P3/18; H02P3/24; H02P6/18; H02P6/20
Foreign References:
US6160367A2000-12-12
DE102004037584A12006-02-23
US20090256507A12009-10-15
Attorney, Agent or Firm:
KOCHER, Klaus-Peter et al. (Daimler AG, Intellectual Property and Technology ManagementGR/V, H512 Stuttgart, 70546, DE)
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