SLIDING MODE CONTROL OF PUSH-PULL CONVERTER

Abstract

State space averaging method is used for obtaining the transfer function of Push-Pull converter. Using SISOTOOL in MATLAB tuning of P1 controller is obtained. Performance of sliding mode controller for Push-Pull converter is investigated by PSIM software. The P1 controller simulation results compared with sliding mode controller. From simulation results it can be observed that sliding mode controller provides better control strategy than P1 controller. With the help of 'Simcoupler Module' which is used for co-simulation of PSIM software and MATLAB, Push Pull converter circuit in open loop configuration as well as with sliding mode controller in closed loop is simulated using Xilinx tool box. Using FPGA (Field programmable gate array) SPARTAN 3 kit, pulses required for converter operation are generated. Prototype model of Push-Pull converter is tested in open loop configuration