TORQUE CONTROL METHOD FOR HIGH SPEED SWITCHED RELUCTANCE MOTOR

摘要

PURPOSE: A torque control method of a high speed switched reluctance motor is provided to increase drive efficiency in a high speed drive section of SRM by reducing torque ripple generated in an overlap area. CONSTITUTION: Negative torque caused on deactivated phase is compensated to positive torque on activated phase in a compensation control activation section. The compensation control activation section is from a turn-on point of the activated deactivated to a residue point of tail current of the deactivated phase. The torque compensation value on the negative torque corresponds to the difference of torque value calculated by a torque command value on the deactivated phase, phase current on the deactivated phase, and the lookup table according to the position angle of a rotor. The torque of the activated phase is transformed into the current command value determined by the look up table according to the position of the rotor and the torque. The current command value is controlled by a PWM technique.