Modeling and controller design of a current-mode controlled converter

In this paper, the reduced-order dynamic modeling and controller design of a push-pull DC-DC converter with current-mode control are presented. First, the small-signal equivalent circuit of the converter and its corresponding transfer function model are found. Then the selection of slope compensatio...

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Bibliographic Details
Published in:IEEE transactions on industrial electronics (1982) 1994-04, Vol.41 (2), p.231-240
Main Authors: Liaw, C.M., Chiang, S.J., Lai, C.Y., Pan, K.H., Leu, G.C., Hsu, G.S.
Format: Article
Language:English
Subjects:
Applied sciences
Current supplies
DC-DC power converters
Electrical engineering. Electrical power engineering
Equivalent circuits
Exact sciences and technology
Inductors
Power electronics, power supplies
Power supplies
Pulse width modulation
Reduced order systems
Switches
Switching circuits
Transfer functions
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Summary:In this paper, the reduced-order dynamic modeling and controller design of a push-pull DC-DC converter with current-mode control are presented. First, the small-signal equivalent circuit of the converter and its corresponding transfer function model are found. Then the selection of slope compensation and the model reduction are performed using the concept of dominant energy mode. Based on the reduced converter models, a quantitative design procedure is derived to find the parameters of the closed-loop controller such that the prescribed regulating specifications can be matched. Theoretic bases, the design and implementation of the proposed controller are described in detail. The performance of the converter and the validity of the proposed controller are demonstrated by some simulation and experimental results.< >
ISSN:0278-0046
1557-9948
DOI:10.1109/41.293884