Sliding mode control for PWM single phase boost power factor correction

A sliding mode control method for a single phase boost power factor correction (PFC) is presented in this paper. Using the sliding mode control inherent robust capability, the system stability under disturbance of uncertain parameters and load variation can be guaranteed. The proposed controller combines the averaging current loop, ensuring the input current tracks the line voltage shape to achieve unity power factor. The presented controller builds only analogous devices that are quite simple for practical applications. The design principles are described in detail to verify the performance of the proposed method. Both the spice and practical circuit are constructed and tested, with simulation and laboratory results that demonstrate the performances of the proposed system.