Boost PFC converters with integral and double integral sliding mode control

In this article, sliding mode controller is used to improve power factor in AC-DC boost converters. A comparison between integral sliding mode controller (ISMC) and double integral sliding mode controller (DISMC) for the current loop of the boost PFC converter is proposed in this paper. In sliding mode control method, circuit complexity is less. Also good stability and fast response versus to the changes of load, source and parameters of the circuit are obtained. In this paper by using second order Sliding Mode, we reduced chattering. The simulations have been done by MATLAB and simulations shown good performance of the DISMC compared with ISMC against load, source and parameters of the circuit changes. The results are: close to unity power factor, low THD, constant output voltage, low chattering and low steady state error. Also converter performance is shown in high frequency application.