A Discrete Approach to the Modeling of Power Electronic Switching Networks

A new approach to time-domain analysis and modeling of power electronic circuits is described. All circuit components, including active and passive elements, are modeled in a discrete manner by transmission-line sections using the transmission-line modeling (TLM) method. This method requires a fixed system matrix which depends only on the circuit configuration and time step hut not on the switching states of the circuit. The circuit's transient behavior can he modeled easily. The proposed TLM algorithm, which provides a fast and exact solution to the discrete model, can he programmed easily on a desktop computer and is stable even for stiff networks.