Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/28170
Title: Design and analysis of LCC resonant network for quasi-lossless current balancing in multistring AC-LED array
Authors: Loo, KH 
Lai, YM 
Tse, CK 
Keywords: AC-LED
current balancing
current equalization
LCC resonant network
multistring array
Issue Date: 2013
Publisher: Institute of Electrical and Electronics Engineers
Source: IEEE transactions on power electronics, 2013, v. 28, no. 2, 6213133, p. 1047-1059 How to cite?
Journal: IEEE transactions on power electronics 
Abstract: Multistring arrays of LED are increasingly used for high-luminance lighting applications. The parallel connection of multiple LED strings, however, gives rise to the issue of current balancing between the strings, as a common voltage applied to them does not guarantee an equal current sharing due to the manufacturing spread in electrical properties. In relation to the need of current balancing, the emergence of AC-LED has enabled a direct driving of LED with ac voltage/current, and capacitors, whose impedance are designed to dominate over the equivalent resistance of LED string, are employed to achieve quasi-lossless current balancing. Although high-efficiency resonant inverters represent an ideal choice for driving AC-LED, their properties tend to be changed significantly by the addition of current-balancing capacitors, which necessitates a reformulation of the conventional design approach. In this paper, the characteristics of an LCC resonant network, which is based on the conventional parallel resonant network and modified by the addition of current-balancing capacitors, are analyzed in depth, and a systematic design procedure for developing an LCC-based resonant inverter with current balancing is formulated. A 100-W prototype is constructed and its performance is tested to verify the proposed design procedure. It is also shown that, with the proposed LCC resonant network, the inverter is capable of reconfiguring itself and operating stably in the case of LED failures.
URI: http://hdl.handle.net/10397/28170
ISSN: 0885-8993
EISSN: 1941-0107
DOI: 10.1109/TPEL.2012.2203149
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

SCOPUSTM   
Citations

26
Last Week
0
Last month
0
Citations as of Sep 5, 2017

WEB OF SCIENCETM
Citations

24
Last Week
0
Last month
0
Citations as of Sep 13, 2017

Page view(s)

37
Last Week
1
Last month
Checked on Sep 17, 2017

Google ScholarTM

Check

Altmetric



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.