Electricity: motive power systems – Switched reluctance motor commutation control
Patent
1995-01-24
1997-04-29
Martin, David S.
Electricity: motive power systems
Switched reluctance motor commutation control
318439, 318610, 388815, 388906, 388910, H02P 600
Patent
active
056252641
ABSTRACT:
A system for controlling a brushless DC motor which can minimize a torque ripple of a motor, thus reducing minute vibrations of the motor and loading devices and increasing efficiency. The system includes a current command generator for producing a current command signal by multiplying a wave form of the current command signal in correspondence to position information by the desired size of the current command signal; a current controller for controlling actual current in the motor to follow the current command signal produced from the current command generator, in response to a feedback error control signal having proportion, integral, and differential elements, and producing a signal for turning ON/OFF following the current command; and an inverter circuit for controlling switching elements to be turned ON/OFF by the signal produced from the current controller, and the desired amount of current to be applied to three-phase coils by a power supply unit. The proportional element is implemented by a sawtooth comparator; and dead time is selectively introduced to take advantage of the inertia of the motor.
REFERENCES:
patent: 4623827 (1986-11-01), Ito
patent: 4733144 (1988-03-01), Bisseling
patent: 4831317 (1989-05-01), Sakamoto et al.
patent: 5023924 (1991-06-01), Tajima et al.
patent: 5159218 (1992-10-01), Murry et al.
patent: 5384526 (1995-01-01), Bennett
patent: 5463298 (1995-10-01), Kamio et al.
Martin David S.
Samsung Aerospace Industries Ltd.
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