The PWM converter can be a remedy for those problem that also can make power flow bidirectional Therefore for the purposes of peak power cutting and power flow control the application of the PWM converter to solar air conditioning system is proposed in this paper and the operating characteristics of the PWM converter are investigated about steady state and transient state characteristics The PWM converter performs current control and voltage regulation The two-level PWM hysteresis method is used for the current control and PI controller for the voltage regulation