Design and Implementation of Intelligent Control of a Fly back Quasi Resonant Converter
T.Anitha1, S.Arulselvi2

1T.Anitha, Department of Electronics and Instrumentation, Annamalai University, Annamalai Nagar, Chidambaram (Tamil Nadu), India.
2Prof. Dr. S. Arulselvi, Department of Electronics and Instrumentation , Annamalai University, Annamalai Nagar, Chidambaram (Tamil Nadu), India.
Manuscript received on 21 March 2013 | Revised Manuscript received on 28 March 2013 | Manuscript published on 30 March 2013 | PP: 53-58 | Volume-2 Issue-1, March 2013 | Retrieval Number: A0492032113/2013©BEIESP
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Abstract: Power supply voltages in digital systems have been reduced considerably in recent years and often digital components requiring different voltages are present in the same board. This has increased the demand for multiple output power distribution systems with tight load regulation. In this paper, a detailed analysis and design of a multi-output flyback zero voltage switching (ZVS) quasi resonant converter(QRC) has been carried out. The effect of cross regulation due to load resistances and leakage inductances are studied and obtained. To reduce the effect of cross-regulation, conventional PI controllers are designed and simulated. In order to improve the performances of the converter due to nonlinearity, intelligent controller like fuzzy logic controller is proposed and simulated. The output results for load regulations are presented and the performances of both the controllers are compared. The result reveals that fuzzy logic controller gives satisfactory performances.
Keywords: Dc-Dc Converters, Flyback Converter, Fuzzy Logic Control , Cross Regulation.

Scope of the Article: Fuzzy Logic