Rotating Switching Surface Control of Series Resonant Converter Based on a Piecewise Affine Model.

چکیده مقاله

Abstract—In this paper, control signal of the series resonant converter is considered as a slope of a switching surface. The output characteristic of the converter, for ideal case and above the resonant frequency, is achieved based on slope of the switching surface. This output characteristic lead us to finding related slope for a specific converter gain. Nonlinear state equations of the series resonant converter with new control input are represented in widely used class of hybrid systems which has been called piecewise affine systems. Considering the effects of the slope variations in switching surface, a simple and efficient control law is achieved. The main advantage of proposed method is the absence of microcontroller and frequency modulator integrated circuits (IC’s) in hardware implementation. This property makes the proposed method more beneficial in high frequency applications. Experimental results confirm our theoretical investigations.