4. CONCLUSION
The solar air conditioning system with PWM converter is proposed and then the several characteristics are investigated by both digital simulation and experiment The PWM converter has two main functions of current control and bidirectional power control For current control the hysteresis controller is used, and also the step-up chopper is adopted for power flow from solar array The revealing Characteristics of the PWM converter can be summarized as low distorted current high power factor, and high utilization of solar energy by reversible power control