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Title: Capacitive current balancing for parallel-connected LED strings with tight load-regulation by switch-controlled capacitor
Authors: Wong, CS
Loo, KH 
Lai, YM 
Tse, CK 
Keywords: Converter control
Power supply
Resonant converter
Issue Date: 2016
Publisher: Institute of Electrical and Electronics Engineers Inc.
Source: 2016 18th European Conference on Power Electronics and Applications, EPE 2016 ECCE Europe, 2016, 7695394 How to cite?
Abstract: This paper proposes a capacitive current balancing method for multistring LED lighting system driven by a LCC resonant converter. Different from conventional current balancing methods, this method replaces the capacitor in the resonant tank by a switch-controlled capacitor (SCC) with which the output voltage can be regulated by modulating the frequency of the resonant tank instead of the switching frequency of the converter. As a result, LED currents can be balanced and maintained to a desired value even for wide load and input voltage variations. A 70-W LCC resonant converter is built to validate the method.
Description: 18th European Conference on Power Electronics and Applications, EPE 2016 ECCE Europe, Karlsruhe, Germany, 5-9 September 2016
ISBN: 9789075815245
Other Identifiers:
DOI: 10.1109/EPE.2016.7695394
Appears in Collections:Conference Paper

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