SYNCHRONOUS MOTOR DRIVING METHOD. COMPRESSOR DRIVING METHOD DEVICE FOR THE METHODS AND BRUSHLESS DC MOTOR DRIVING DEVICE

摘要

Variation amount for both the amplitude and phase of the current waveform or voltage waveform when about a load with a periodic torque variation perform torque control for suppressing the speed fluctuation of one rotation by a synchronous motor 6 which is controlled by inverter 5 by adopting such a configuration including the inverter control means (8) 10 for suppressing the inverter 5 to be superimposed to realize the torque control for reducing low speed vibration in a practical configuration the pulse load of periodicity in maximum efficiency conditions .