Decoupled output voltage control of quantum series resonant converter for improved buck-boost operation

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A new output voltage control technique is proposed to obtain the improved buck-boost operation of the quantum series resonant converter (QSRC), The new nonlinear dynamic model of QSRC is first derived and the cross-coupled nonlinear term existing in the output voltage dynamics is decoupled by using control methods such as the periodic control of the boosting switch (PCBS) and the resonant current control (RCC), By applying the state space averaging concept to the decoupled dynamics, two linear large signal averaged models are obtained for PCBS-and RCC schemes. Using the proposed technique, the flux imbalance problem of the isolation transformer and the robustness of the output voltage response can be easily considered, This technique can also be widely applicable to the cascade buck-boost converter, which can be implemented by inserting a boosting switch between the output filter inductor and the ripple capacitor of the forward converter, The validity of the proposed scheme is confirmed by the computer simulations and the experiments.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
1996-01
Language
English
Article Type
Article
Citation

IEEE TRANSACTIONS ON POWER ELECTRONICS, v.11, no.1, pp.147 - 161

ISSN
0885-8993
URI
http://hdl.handle.net/10203/74942
Appears in Collection
EE-Journal Papers(저널논문)
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