Title :
A simple large-signal nonlinear modeling approach for fast simulation of zero-current-switch quasi-resonant converters
Author :
Wong, L.K. ; Leung, Frank H. ; Tam, Peter K S
Author_Institution :
Dept. of Electron. Eng., Hong Kong Polytech. Univ., Hong Kong
fDate :
5/1/1997 12:00:00 AM
Abstract :
A nonlinear modeling approach for zero-current-switch (ZCS) quasi-resonant converters (QRC) is proposed which can be derived easily using simple analytical techniques. The converter model obtained is readily absorbed by MATLAB for analysis and design of both the open- and closed-loop configurations in fast speed. Simulations have shown its accuracy, even for large-signal transient responses. Applications of this modeling approach to the three basic topologies of buck, boost, and buck-boost converters are given as illustrative examples. The condition for zero-current switching is identified from the model. The feasibility of applying this proposed modeling approach to the extended period QRC topologies is to be discussed. Simulation results for the three basic topologies are given to show the merits of the proposed modeling approach
Keywords :
DC-DC power convertors; circuit analysis computing; resonant power convertors; switching circuits; MATLAB; boost converters; buck converters; buck-boost converters; closed-loop configuration; fast simulation; large-signal nonlinear modeling; open-loop configuration; zero-current-switch quasi-resonant converters; Analytical models; Circuit topology; MATLAB; Mathematical model; Power supplies; Power system modeling; Steady-state; Switches; Switching converters; Zero current switching;
Journal_Title :
Power Electronics, IEEE Transactions on