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Time domain simulation of power electronics circuits using embedded companion models

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3 Author(s)
H. S. -H. Chung ; Dept. of Electron. Eng., City Univ. of Hong Kong, Kowloon, Hong Kong ; S. Y. R. Hui ; K. Y. Mak

This paper presents a stepwise time-domain simulation technique for analysis of power electronics circuits. New companion models embedding with parasitic resistance of reactive elements and switches are proposed. In every simulation step, a switching circuit is transformed into a resistive network, which is analyzed by a modified nodal approach. The switch model enables a switching circuit to be modeled by a constant system matrix, regardless of the switching state. This feature allows a circuit with numerous topologies to be modeled elegantly by one set of algebraic equation, and a reduction of circuit formulation and computation time. By using quadratic extrapolation on circuit waveforms within a simulation step, a simple and direct method is used to determine switching instants. Simulated results are verified with experimental measurements

Published in:

Industrial Electronics, 1999. ISIE '99. Proceedings of the IEEE International Symposium on  (Volume:1 )

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