Posicast control within feedback structure for a DC–DC single ended primary inductor converter in renewable energy applications

0306-2619/$ see front matter 2010 Elsevier Ltd. A doi:10.1016/j.apenergy.2010.04.012 * Corresponding author. Tel.: +98 2177240540 50x E-mail address: [email protected] (M. Kalantar). In this paper, modeling, analysis, design, simulation and control of a single ended primary inductor converter (SEPIC) are discussed for renewable energy applications. Because the traditional control methods such as proportional–integral–derivative (PID) and classical half-cycle Posicast controllers based on feedforward are sensitive to noise and variations in natural frequency, a Posicast control with feedback structure is proposed and designed to reduce or rejection undesirable sensitivity greatly, to suppress measurement noise and to eliminate the overshoot in the output response. The SEPIC converter is modeled using average value modeling analysis. Dynamic modeling and simulation are accomplished using MATLAB SimulinkTM 7.2. 2010 Elsevier Ltd. All rights reserved.