Application of series resonant converters to reduce ripple transmission to LED arrays in offline drivers

被引：22

作者：

Almeida, P. S. ^{[1
]}

Dalla Costa, M. A. ^{[2
]}

Alonso, J. M. ^{[3
]}

Braga, H. A. C. ^{[1
]}

机构：

[1] Univ Fed Juiz de Fora, Modern Lighting Res Grp, NIMO, Juiz De Fora, MG, Brazil

[2] Univ Fed Santa Maria, Elect Ballast Res Grp GEDRE, BR-97119900 Santa Maria, RS, Brazil

[3] Univ Oviedo, DIEECS Tecnol Elect, Gijon, Spain

来源：

ELECTRONICS LETTERS | 2013年 / 49卷 / 06期

关键词：

D O I：

10.1049/el.2012.4412

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Proposed is a novel approach to reduce low-frequency ripple in light-emitting diode (LED) arrays that are supplied from the AC grid. The proposal employs a series resonant DC-DC converter connected to the output of the power factor correction (PFC) stage so that the low-frequency ripple transmitted from the PFC stage to the LEDs can be minimised. This solution achieves two goals: (i) reduction of the bulk capacitance used at the output of the PFC stage so that long-life film capacitors can be employed, and (ii) increasing the efficiency of the LED driver owing to the low switching losses of the resonant converter. Experimental results are provided to validate this proposal.

引用

页码：414 / 415

页数：2

共 5 条

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