Abstract
The compressor motor of an air conditioner is subjected to the a fluctuating load torque during the suction and discharge of refrigerant, resulting in a speed ripple in the machine angular cycle. This paper proposes a new predictive feedforward control system that predicts and suppresses the speed ripple cuased by the periodic disturbance of compressor motor by using error data of speed PI controller. The speed ripple suppression performance of proposed control method is experimentally confirmed by applying it to achieve speed control of an air conditioner compressor motor.
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