Drive circuit for induction motor used in air conditioning...

Details Drive circuit for induction motor used in air conditioning... Drive circuit for induction motor used in air conditioning...

B - Operations, Transporting

61

D

318/103, 341/26

B61D 27/00 (2006.01) H02P 25/02 (2006.01) H02P 27/06 (2006.01)

Patent

CA 1048104

ABSTRACT OF THE DISCLOSURE A drive circuit for an induction motor used in an air conditioning system of a railway vehicle operable from an applied high voltage direct current, which circuit comprises a chopper circuit having its input connected to the high voltage direct current and its output connected to a three-phase variable frequency inverter circuit which, in turn, has its output connected to the induction motor. A voltage feedback is employed to control the current output of the chopper circuit and the frequency of the inverter circuit.

252880

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