Methods and systems for evaluating permanent magnet motors

Details Methods and systems for evaluating permanent magnet motors Methods and systems for evaluating permanent magnet motors

2011-06-14

2011-06-14

Nguyen, Ha Tran T (Department: 2858)

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

Of individual circuit component or element

C318S432000, C318S490000

Reexamination Certificate

active

07960999

ABSTRACT:
A method for evaluating a permanent magnet motor, which includes a rotor with a plurality of magnets mounted thereon, and a stator with a plurality of windings in proximity to the rotor and coupled to an inverter, includes spinning the motor such that a voltage is induced in the windings of the stator and the inverter; measuring the voltage on the inverter; calculating the voltage constant from the motor from the measured voltage; comparing the voltage constant to accepted voltage constants; and identifying the motor as not acceptable if the voltage constant is outside of a range of the accepted voltage constants.

REFERENCES:
patent: 6720792 (2004-04-01), Raftari et al.
patent: 7423401 (2008-09-01), Kinpara et al.
patent: 2002/0113615 (2002-08-01), Atarashi
patent: 2005/0269983 (2005-12-01), Takai et al.
patent: 2009/0033357 (2009-02-01), Lindsey et al.

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