CPC G01R 31/343 (2013.01) [G01R 31/1227 (2013.01)] | 20 Claims |
1. A method for detecting a partial discharge in a stator for an electric motor, the method comprising:
generating an AC sinewave input signal with an AC function generator;
amplifying the AC sinewave input signal to an increased voltage with an amplifier to form a high voltage AC sinewave input signal, wherein the increased voltage is at least 100 volts;
applying the high voltage AC sinewave input signal to the stator and energizing at least one winding therein;
sensing a first resulting load signal occurring in the stator with a first device;
filtering the first resulting load signal to form a first high frequency signal indicating any partial discharge voltage occurring in the stator;
sensing a second resulting load signal occurring in the stator with a second device;
filtering the second resulting load signal to form a second high frequency signal indicating any partial discharge voltage occurring in the stator; and
processing the first high frequency signal and the second high frequency signal to form a processed signal indicating whether partial discharge occurred.
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