Sliding mode control of AC/DC power converters

This paper presents a novel control strategy of AC/DC power converters. The proposed control algorithm is based on Sliding Mode Control methodology. The basic idea is to apply feedback implementation of pulse-width modulation (PWM). The method exhibits low sensitivity to disturbances and fast dynamic performance in addition to the main converter properties. The proposed sliding mode control method ensures that the power converter has the following properties: unity power factor, sinusoidal input currents, and low level of DC output voltage ripple. Discussion starts with the circuit model and design methodology. Then, a sliding mode current control tracking system is designed. Finally, output voltage control is developed. The effectiveness of the proposed control strategy has been demonstrated through various simulation cases.