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A discrete approach to the modeling of power electronic switching networks

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2 Author(s)
Hui, S.Y.R. ; Dept. of Electr. & Electron. Eng., Nottingham Univ., UK ; Christopoulos, C.

An 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 upon the circuit configuration and time step and not on the switching states of the circuit. Since this method adopts a discrete approach, it provides an exact solution to the discrete model and is stable even for stiff networks. Errors are due to the modeling process only and not to the approximate solution of an approximate calculus model. A simulation on a switched-mode power supply is used to illustrate the modeling method, and the simulated results are compared with measurements

Published in:

Power Electronics, IEEE Transactions on  (Volume:5 ,  Issue: 4 )