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Open AccessArticle
Interleaved Modified SEPIC Converters with Soft Switching and High Power Factor for LED Lighting Appliance
by
Hung-Liang Cheng
Hung-Liang Cheng
,
Chun-An Cheng
Chun-An Cheng
,
Chien-Hsuan Chang
Chien-Hsuan Chang
,
En-Chih Chang
En-Chih Chang ,
Lain-Chyr Hwang
Lain-Chyr Hwang * and
Yi-Chan Hung
Yi-Chan Hung
Department of Electrical Engineering, I-Shou University, Kaohsiung City 84001, Taiwan
*
Author to whom correspondence should be addressed.
Appl. Sci. 2024, 14(15), 6656; https://doi.org/10.3390/app14156656 (registering DOI)
Submission received: 28 May 2024
/
Revised: 22 July 2024
/
Accepted: 25 July 2024
/
Published: 30 July 2024
Abstract
A novel ac/dc LED driver with power factor correction and soft-switching functions is proposed. The circuit topology mainly consists of two modified single-ended primary inductance converters (SEPIC) with interleaved operation. The first half stage of SEPIC operates like a boost converter and the second half stage operates like a buck–boost converter. Each boost converter is designed to operate in discontinuous current mode (DCM) to function as a power factor corrector (PFC). The two buck–boost converters that share a commonly coupled inductor are designed to operate at near boundary conduction mode (BCM). Without using any active clamping circuit, auxiliary switch or snubber circuit, the active switches can achieve zero-voltage switching on, and all diodes achieve zero-current switching off. First, operation modes in steady state are analyzed, and the mathematical equations for design component parameters are derived. Finally, a prototype circuit of 180 W rated power was built and tested. Experimental results show satisfactory performance of the proposed circuit.
Share and Cite
MDPI and ACS Style
Cheng, H.-L.; Cheng, C.-A.; Chang, C.-H.; Chang, E.-C.; Hwang, L.-C.; Hung, Y.-C.
Interleaved Modified SEPIC Converters with Soft Switching and High Power Factor for LED Lighting Appliance. Appl. Sci. 2024, 14, 6656.
https://doi.org/10.3390/app14156656
AMA Style
Cheng H-L, Cheng C-A, Chang C-H, Chang E-C, Hwang L-C, Hung Y-C.
Interleaved Modified SEPIC Converters with Soft Switching and High Power Factor for LED Lighting Appliance. Applied Sciences. 2024; 14(15):6656.
https://doi.org/10.3390/app14156656
Chicago/Turabian Style
Cheng, Hung-Liang, Chun-An Cheng, Chien-Hsuan Chang, En-Chih Chang, Lain-Chyr Hwang, and Yi-Chan Hung.
2024. "Interleaved Modified SEPIC Converters with Soft Switching and High Power Factor for LED Lighting Appliance" Applied Sciences 14, no. 15: 6656.
https://doi.org/10.3390/app14156656
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