Brushless DC motor with means for compensating ripple torque

Details Brushless DC motor with means for compensating ripple torque Brushless DC motor with means for compensating ripple torque

1987-04-28

1988-06-14

Salce, Patrick R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 68R, 310186, 318254, H02K 1100, H02K 2908

Patent

active

047514159

ABSTRACT:
A brushless DC motor comprising a stator with plural exciting windings and a rotor made of a permanent magnet is provided with a compensation winding wound in the stator and compensation magnetic poles disposed on the rotor such that a torque which is generated between the compensation winding and the compensation magnetic poles of the rotor may eliminate fluctuation of the torque generated by interaction of the exciting windings of the stator and the main magnet of the rotor.

REFERENCES:
patent: 3873897 (1975-03-01), Muller
patent: 3873898 (1975-03-01), Muller
patent: 4211963 (1980-07-01), Muller
patent: 4260920 (1981-04-01), Nakamura et al.
patent: 4704566 (1987-11-01), Hirano et al.
patent: 4704567 (1987-11-01), Suzuki et al.
"2-Phase Transistor Motor" by Kitamori, Tanaka and Yamada, National Technical Report, vol. 26, No. 5 (Oct. 1980) pp. 794 to 800.

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