Reduced operating loss rotor for induction motor

Details Reduced operating loss rotor for induction motor Reduced operating loss rotor for induction motor

H - Electricity

02

K

310/84

H02K 17/02 (2006.01) H02K 17/16 (2006.01)

Patent

CA 1170302

ABSTRACT OF THE DISCLOSURE When an induction motor is speed-controlled with a variable frequency power supply including thyristor inverters, operating loss due to harmonics components is increased in a rotor of the induction motor. In order to diverge additional operating loss into an appreciable depth of the rotor to thereby suppress the increase in the operating loss, the rotor comprises a cylindrical member having a circumferential resistivity which is larger than axial and radial resistivities and circumferential permeability which is smaller than axial and radial permeabilities, and a core disposed in the cylindrical member and having an axial permeability which is smaller than circumferential and radial permeabilities.

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