Light & Engineering 25 (4)

Volume 27
Date of publication 12/20/2017
Pages 92-98

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Comparison of Single Phase Buck-Boost and SEPIC LED Driver. L&E 25 (4) 2017

Articles authors:

Erdal Sehirli, Meral Altınay, Özgür Üstün, Bekir Çakır

Erdal Sehirli, received his B. Sc. degrees from Gazi University and Istanbul Technical University, in 2006 and 2016 respectively, and the M. Sc. degrees and Ph.D. from Kocaeli University, Kocaeli, Turkey, in 2009, 2016 and 2017. He is a currently working as Ph.D. Lecturer in Kastamonu University, Electrical-Electronics Engineering. His current research interests include LED drivers, power electronics, electrical machines and drives, voltage source rectifiers and nonlinear control

Received the B. Sc. degree from Marmara Univeristy, İstanbul, Turkey, in 1994 and the M. Sc. and Ph.D. degrees from the Kocaeli University, in 1998 and 2005, respectively. In 1996, she joined the Department of Electrical Education, Faculty of Technical Education, Kocaeli University as a Research Assistant. Since 2006, she has been an Assistant Professor with the Technology Faculty, Kocaeli University. Her research interests include modelling, control design of switching mode-power converters, power quality

Received the B. Sc., M. Sc. and Ph.D. degrees from Istanbul Technical University, Turkey, in 1990, 1993 and 2000 respectively. He is currently working as an Associate Professor in Istanbul Technical University. His research interests are power electronics, electrical machinery and energy conversions

Received the B. Sc. and M. Sc. degrees from the Berlin Technical University, Germany, in 1986 and 1990, respectively and Ph.D. degree from both Yıldız Technical University and Kocaeli University, Turkey, 1995. In 1991, he joined Kocaeli University, Engineering Faculty as a Research Assistant. He was ﬁ rst Assistant Professor, then Associate Professor in Kocaeli University, 1995 and 2002 respectively. Since 2006, he has been a Professor with the Engineering Faculty, Kocaeli University. His research interests are embedded system design, power electronics driver circuits, renewable energy production systems and smart grids

Abstract:

This paper presents the comparison of LED driver topologies that include buck-boost and SEPIC converters. Both topologies are connected to grid over single phase diode rectifi er and designed for 8W power. Furthermore, buck-boost and SEPIC converters operate with 63 kHz switching frequency and inductors of SEPIC are wounded as coupled. By means of the implementations, power factor (PF) and total harmonic distortion (THD) of current and voltage, power LED voltage and current are shown for both topologies. Comparison is also made between IEC61000–3–2 standard, buck-boost and SEPIC converters. Besides, electrical circuit model of power LED is derived by using its current-voltage characteristic.

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