Simulation of series-parallel resonant DC-DC converter system with DSP-based digital control scheme

This paper describes an efficient simulation approach of a DSP controlled s eries-parallel resonant high frequency DC-DC power converter system. Propos ed power conversion circuit simulation approach is based on a circuit equat ion, modeled by substituting time-varying switched resistor circuit in plac e of ail the controllable and uncontrollable power semiconductor switching blocks of power converter circuits. An algebraic algorithm transforms the m atrices of the circuit equation into the matrices of the state vector equat ion. Solution of state equation is by 3rd order Runge Kutta numerical integ ration method. Simulation results are illustrated and discussed together wi th experimental results.