Hamel locus design of self-oscillating DC-DC resonant converters

Williams, D. and Bingham, Chris and Foster, M. P. and Stone, D. A. (2010) Hamel locus design of self-oscillating DC-DC resonant converters. Power Electronics, IET , 3 (1). pp. 86-94. ISSN 1755-4535

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Official URL: http://dx.doi.org/10.1049/iet-pel.2008.0263

Abstract

The study presents a technique for analysing and controlling resonant DC-DC converters in a self-oscillating manner. Self-oscillating converters benefit from higher efficiency and higher power density than their non-self-oscillating counterparts since they can be operated closer to the tank resonant frequency. The analysis necessary to predict the behaviour of such converters, based on the construction of Hamel loci, is developed. The impact of parasitic circuit elements is also inherently accommodated. Operation is based on the behaviour of a relay with a negative hysteresis transition. The proposed self-oscillating mechanism is therefore simple and cost effective to implement. Results from a prototype converter are included in order to verify the underlying theoretical principles.

Item Type:Article
Additional Information:The study presents a technique for analysing and controlling resonant DC-DC converters in a self-oscillating manner. Self-oscillating converters benefit from higher efficiency and higher power density than their non-self-oscillating counterparts since they can be operated closer to the tank resonant frequency. The analysis necessary to predict the behaviour of such converters, based on the construction of Hamel loci, is developed. The impact of parasitic circuit elements is also inherently accommodated. Operation is based on the behaviour of a relay with a negative hysteresis transition. The proposed self-oscillating mechanism is therefore simple and cost effective to implement. Results from a prototype converter are included in order to verify the underlying theoretical principles.
Keywords:Resonant power conversion
Subjects:H Engineering > H610 Electronic Engineering
Divisions:College of Science > School of Engineering
ID Code:2901
Deposited By:INVALID USER
Deposited On:16 Jul 2010 08:24
Last Modified:28 Aug 2014 09:24

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