Title:
METHOD AND APPARATUS FOR OPERATING AN ELECTRONICALLY COMMUTATED ELECTRICAL MACHINE IN THE EVENT OF A FAULT
Document Type and Number:
WIPO Patent Application WO/2013/064474
Kind Code:
A3
Abstract:
The invention relates to a method for operating a multiphase electrical machine (2) in the event of a fault, wherein the electrical machine (2) is driven with the aid of a driver circuit (3), wherein the driver circuit (3) has half-bridge circuits (31), each associated with a phase (U, V, W), and bridge paths (32) for connecting or disconnecting predetermined voltage potentials to/from the respective phases (U, V, W) of the electrical machine (2), wherein one or more of the bridge paths (32) are operated according to a first fault operating mode if a fault is detected, wherein, in the first fault operating mode, the one or more bridge paths (32) are controlled in such a manner that said paths connect a first of the predetermined voltage potentials to the phase (U, V, W) via a predetermined electrical resistor.
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Inventors:
DITTMER BERND (DE)
HOFFMANN EKKEHARD (DE)
HOFFMANN EKKEHARD (DE)
Application Number:
PCT/EP2012/071430
Publication Date:
November 14, 2013
Filing Date:
October 30, 2012
Export Citation:
Assignee:
BOSCH GMBH ROBERT (DE)
DITTMER BERND (DE)
HOFFMANN EKKEHARD (DE)
DITTMER BERND (DE)
HOFFMANN EKKEHARD (DE)
International Classes:
H02P27/06; H02M1/32; H02P25/22; H02P29/02
Foreign References:
| DE102010001241A1 | 2010-10-07 | |||
| DE102011005973A1 | 2011-09-29 | |||
| US20110074333A1 | 2011-03-31 | |||
| DE10223139A1 | 2003-12-11 | |||
| EP2009782A1 | 2008-12-31 |
Attorney, Agent or Firm:
ROBERT BOSCH GMBH (Stuttgart, DE)
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