Robust Power Electronic Circuit Models with Accurate Loss Estimation

Abstract

This paper presents a robust simulation technique for power electronic circuits that accurately captures device losses. The temperature dependent i-v characteristics of the power electronic devices are used to develop a scalar nonlinear equation for a power-pole configuration. The power pole model can be readily extended to majority of circuit topologies. Furthermore, a switching loss model is presented that adjusts the voltage and current waveforms of the power pole due to switching at each switching instant. Integrating the switching loss model makes the proposed approach comprehensive in loss estimation. Simulation and experimental results are presented confirming the validity of the above approach. Results regarding computation time are also provided.