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Electric machine

  • US 20080010036A1
  • Filed: 05/07/2007
  • Published: 01/10/2008
  • Est. Priority Date: 07/31/2002
  • Status: Active Grant
First Claim
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1. A method of monitoring a rotating synchronous electric machine (9), which comprises a rotor having a rotor winding and a stator having a stator winding, the method comprising the steps of determining the stator winding current, determining the stator winding voltage, determining the rotor winding current, and estimating the temperature in at least two positions in the electric machine (9) using a theoretical model of the electric machine and the determined current and voltage values.

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