A robust approach to controller design for DC-DC quasi-resonant converters

Bevrani, Hassan, Ise, Toshifumi, Mitani, Yasunori, & Tsuji, Kiichiro (2004) A robust approach to controller design for DC-DC quasi-resonant converters. IEEJ Transactions on Industry Applications, 124(5), pp. 91-100.

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Abstract

DC-DC quasi-resonant converters (QRCs) have a highly nonlinear and time-varying behavior as well as other types of DC-DC resonant converters such as conventional and multi-resonant converters. Changing in operating conditions, mainly due to variation in load and line disturbance, leads to significant changes on system dynamics so that desired performance and even stability are lost. Taking into consideration the uprising need for high-quality resonant power converters has opened a new research window on the control of these systems using modern and systematic approaches. In this paper in order to achieve both stability and desired performance, such as reduced sensitivity to load variations, desired disturbance rejection, reduced output impedance and attenuated transfer from input to output, we have proposed a methodology based on mu-synthesis technique for DC-DC QRCs controller design. The mu-analysis is used to verify the robustness of the designed controller. The proposed control strategy is applied to a typical zero-current switching QRC and nonlinear simulation is performed using nonlinear model of converter circuit. The simulation results demonstrate the good reference voltage tracking, line disturbance rejection and show that the designed procedure guarantees the robust stability and robust performance for a wide range of load variation.

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ID Code: 13443
Item Type: Journal Article
Refereed: Yes
Additional Information: Self-archiving of the author-version is not yet supported by this publisher.
For more information, please refer to the journal's website (see hypertext link) or contact the author.
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Keywords: Robust control, ZCS, Quasi, resonant converter, mu, synthesis, Robust performance
ISSN: : 1348-8163
Divisions: Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Copyright Owner: Copyright 2004 The Institute of Electrical Engineers of Japan (IEEJ)
Deposited On: 02 May 2008 00:00
Last Modified: 09 Jun 2010 12:58

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