Rotor of induction motor

Details Rotor of induction motor Rotor of induction motor

1987-10-23

1988-10-11

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 42, 310 44, 310166, 310261, H02K 2112

Patent

active

047773960

ABSTRACT:
A rotor of induction motor comprises a rotary shaft, a cylindrical rotor core fixedly secured on the rotary shaft, a conductive cover fixed on the outer circumferential surface of the rotor core, the conductive cover being formed of a composite material of magnetic material and electrically highly conductive material to have a circumferential permeability smaller than a radial permeability, and a magnetic skin made of a magnetic material and provided on the outer circumferential surface of the conductive cover, the magnetic skin having a circumferential permeability and an electrical conductivity which are set to be larger than the circumferential permeability and an electrical resistivity of the conductive cover, respectively, whereby a loss due to a spatial higher harmonics magnetic flux of higher order generated by a pulsating magnetic flux of slots in a stator of induction motor can be prevented.

REFERENCES:
patent: 3909647 (1975-09-01), Peterson
patent: 4409506 (1983-10-01), Ito et al.
patent: 4486678 (1984-12-01), Olson
patent: 4678954 (1987-07-01), Takeda

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