A generic computer-aided simulation approach for digitally-controlled switching mode power converter circuits and systems

The purpose of this study is to describe a unified simulation technique in order to research and develop digitally-controlled switching mode power converters. The computer-aided simulation procedure is based on a circuit equation modeled by time-varying resistors taking the place of the switches and the diodes, a state equation for the inductors and the capacitors, an algebraic computation method to transform the matrices of the circuit equation into the matrices of the state equation in addition to a control algorithm described and implemented by computer program. Moreover, a flexible and functional computer network environment is discussed from a view point to functionally combine the circuit simulation as well as control programming implemented for the target equipment and its debugging. Finally, as simulation examples, the inverter-fed DC-DC converter with transformer parasitic components is introduced and its experimental results are presented to verify the simulation results.