Drive system for a brushless DC motor

Details Drive system for a brushless DC motor Drive system for a brushless DC motor

1980-11-19

1982-08-10

Rubinson, Gene Z.

Electricity: motive power systems

Switched reluctance motor commutation control

318138, H02K 2900

Patent

active

043440231

ABSTRACT:
A drive system for a brushless dc motor to control the magnitude of the torque of a motor which has permanent magnet rotor and Hall generators. Multipliers determine the magnitude of current to each phase armature winding so as to determine the current sharing rate among the armature windings according to the rotation angle of the rotor, whereby degrading of torque uniformity due to variation of Hall generator characteristics is avoided. Each multiplier multiplies 2 signals, one being the output of the Hall generator, the other being the difference between the torque control input and the fed back signal of total armature current. Also a torque direction input is supplied to each multiplier to determine the direction of the rotational torque.

REFERENCES:
patent: 3757185 (1973-09-01), Brunner et al.
patent: 3938014 (1976-02-01), Nakajima
patent: 4039911 (1977-08-01), Tanikoshi

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