Challenges in computer-based analysis/simulation and design of power electronic circuits

Challenges in the area of analysis/simulation tools for power electronics are outlined, along with a proposal for a hierarchy of tools. It is noted that circuit nonlinearities, wide variations in circuit time constants leading to mathematically stiff circuit description equations, the necessity of being able to obtain the switching instant with high accuracy, and the sensitivity of circuit performance to small parasitics make the task of providing comprehensive simulation very difficult. It is also noted that the design process must be tailored by recognizing that power electronic circuits are different from digital circuits, and hence need a different process. Some essential elements of such a design process are described, and known problems that need to be solved before one can design power electronics circuits completely using computer-based tools are identified. Some of the problems to be addressed in the near future are described