Simple models for SPICE assist power electronics circuit simulation on PCs

The authors show how built-in dependent sources in a circuit analysis program (PSPICE) can be used to model voltage and current source inverter circuits under large-signal operating conditions, including simple feedback. The simplified models proposed reduce the run time and the amount of memory required, allowing the simulation of topologies with increased circuit complexity and long computation intervals. It is shown how user-defined programs can be incorporated to obtain steady-state conditions, schematic capture capability, and input/output data manipulation, while operating under SPICE in a user-friendly environment suited for personal computers.<>