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Electric machine assembly with fail-safe arrangement

  • US 8,878,468 B2
  • Filed: 04/29/2011
  • Issued: 11/04/2014
  • Est. Priority Date: 04/29/2011
  • Status: Active Grant
First Claim
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1. An electric machine assembly with fail-safe arrangement, the assembly comprising:

  • a stator including a plurality of windings and a cooperating rotor including at least one permanent magnet;

    a multi-phase bridge connected to the phase windings;

    a detector configured to detect a failure in the multi-phase bridge by detecting a presence of DC current in at least one of the windings of the stator during operation of the electric machine; and

    a bypass circuit configured to be activated by a switching device upon detection of the failure in the multi-phase bridge by the detector and configured to prevent at least some of the DC current from flowing into the at least one of the windings of the stator.

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