METHOD FOR REDUCING NOISE OF SYNCHRONOUS RELUCTANCE MOTOR

摘要

PURPOSE: A method for reducing noise of a synchronous reluctance motor(104) is provided to reduce noise by varying the Pulse Width Modulation(PWM) duty cycle at the time of two reflection alive control. CONSTITUTION: A method for reducing noise of a synchronous reluctance motor(104) includes following steps. The driving logic state of the current load is discriminated by measuring the location signal of a load. The upper and lower reflections gate signal(105,106) corresponding to the driving logic state of the current load is decided and generated while the primary Pulse Width Modulation(PWM) duty cyclethat increased for the primary period is generated. The secondary PWM duty cycle opposite to the primary PWM duty cycle that increased for the primary period is generated. Different switching time of an inverter circuit(103) is given by PWM of upper and lower reflections gate signal(105,106) with the primary PWM duty cycle and the secondary PWM Duty cycle.