International Journal of Circuit Theory and Applications, Volume (46), No (6), Year (2018-6) , Pages (1228-1248)

Title : ( Dynamic model development and control for multiple-output flyback converters in DCM and CCM )

Authors: Hossein Delavaripour , Behzad Mirzaeian , Ehsan Adib , Hossein Abootorabi Zarchi ,

Citation: BibTeX | EndNote

Abstract

Multiple‐output flyback converters are widely used in switching power supplies due to their low component count and cost‐effective structure. The main problem of this structure is how to balance output voltages in different load conditions. This paper proposes a new approach for single‐input multiple‐output flyback converters operating in DCM and CCM by a small‐signal averaged model. The averaged model is derived by presenting the piecewise‐linear waveform for the inductor currents inside the converter. In DCM, the magnetizing current and currents through the output windings reach zero when the switch is turned off. In CCM, the magnetizing current of the converter is continuous over a switching interval and this possibility exists that only some of the output diodes completely conduct when the switch is off. The proposed model of the converter can be used in a wide range of operations within identical and non‐identical loading conditions. Using a laboratory prototype, several case studies and input‐to‐output transfer functions are considered to verify the proposed model. The controller design is performed for the both CCM and DCM, and then dynamic characteristics of the overall system are evaluated.

Keywords

, multiple‐output DC‐DC converter, flyback converter, averaged model, small‐signal model, discontinuous conduction mode -DCM-, continuous conduction mode -CCM-
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@article{paperid:1072719,
author = {Hossein Delavaripour and Behzad Mirzaeian and Ehsan Adib and Abootorabi Zarchi, Hossein},
title = {Dynamic model development and control for multiple-output flyback converters in DCM and CCM},
journal = {International Journal of Circuit Theory and Applications},
year = {2018},
volume = {46},
number = {6},
month = {June},
issn = {0098-9886},
pages = {1228--1248},
numpages = {20},
keywords = {multiple‐output DC‐DC converter; flyback converter; averaged model; small‐signal model; discontinuous conduction mode -DCM-; continuous conduction mode -CCM-},
}

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%0 Journal Article
%T Dynamic model development and control for multiple-output flyback converters in DCM and CCM
%A Hossein Delavaripour
%A Behzad Mirzaeian
%A Ehsan Adib
%A Abootorabi Zarchi, Hossein
%J International Journal of Circuit Theory and Applications
%@ 0098-9886
%D 2018

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