PARTIAL DISCHARGE MEASUREMENT METHOD AND METHOD FOR MANUFACTURING ROTARY ELECTRIC MACHINE

摘要

PROBLEM TO BE SOLVED: To provide a partial discharge measurement method for precisely measuring partial discharge between coil winding wires of a rotary electric machine.

SOLUTION: The partial discharge measurement method for measuring partial discharge between coil winding wires of the rotary electric machine applies mutually identical impulse voltage generated by a surge power supply between a voltage application terminal of each phase coil and a stator core of the rotary electric machine, measures a partial discharge signal outputted by a partial discharge detector for detecting partial discharge occurring to the rotary electric machine, and determines whether or not there occurs partial discharge between the coil winding wires on the basis of whether or not there are more than one group of partial discharge signals measured with respect to application of arbitrary impulse voltage during an application period of the arbitrary impulse voltage.

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