Bridgeless SEPIC-based AC-DC converter for compact inverter and low-power AC drive applications

Khaled A. Mahafzah; Mohamad A. Obeidat; Ali Q. Al-Shetwi; Taha Selim Ustun

doi:10.1016/j.jnlest.2026.100356

Journal of Electronic Science and Technology ›› 2026, Vol. 24 ›› Issue (2) :100356 DOI: 10.1016/j.jnlest.2026.100356

research-article

Bridgeless SEPIC-based AC-DC converter for compact inverter and low-power AC drive applications

Author information +

^a Department of Electrical Engineering, Al-Ahliyya Amman University, Amman, 19328, Jordan

^b Department of Electrical Power Engineering, Al-Tafila Technical University, Tafila, 66110, Jordan

^c Electrical Engineering Department, Fahad Bin Sultan University, Tabuk, 71454, Saudi Arabia

^d Renewable Energy Engineering Department, Fahad Bin Sultan University, Tabuk, 71454, Saudi Arabia

^e Fukushima Renewable Energy Institute, National Institute of Advanced Industrial Science and Technology, Koriyama, 963-0298, Japan

^* E-mail addresses: k.mahafzah@ammanu.edu.jo (K.A. Mahafzah),

obeidat@tafila.edu.jo (M.A. Obeidat),

aalshetwi@fbsu.edu.sa (A.Q. Al-Shetwi),

selim.ustun@aist.go.jp (T.S. Ustun).

Khaled A. Mahafzah was born in Irbid, Jordan in 1987. He received the B.S. and M.S. degrees in electrical power engineering from Yarmouk University, Irbid, Jordan in 2010 and 2012, respectively. From 2012 to 2014, he served as a Research and Teaching Assistant at German Jordanian University, Amman, Jordan. He obtained the Ph.D. degree in power electronics and drives from Graz University of Technology, Graz, Austria in 2018. He is currently an Associate Professor of power electronics and drives at the Department of Electrical Engineering, Al-Ahliyya Amman University, Amman, Jordan. His research interests include power electronics, electrical drives, and the integrity of renewable engineering sources with power systems.

Mohamad A. Obeidat was born in Irbid, Jordan in 1976. He received the B.S. degree from Jordan University of Science and Technology in 1999, the M.S. degree from Yarmouk University, Irbid, Jordan in 2006, and the Ph.D. degree from Wayne State University, Detroit, USA in 2013, all in electrical engineering. He is currently a Professor at the Department of Electrical Power Engineering, Al-Tafila Technical University, Tafila, Jordan. His research interests include intelligent control systems, renewable energy, intelligent systems, and mechatronics.

Ali Q. Al-Shetwi obtained the B.S. degree in electrical and computer engineering from Hashemite University, Az-Zarqa, Jordan in 2009, the M.S. degree in electrical power engineering from Yarmouk University in 2013, and the Ph.D. degree in electrical and electronics engineering from Universiti Malaysia Pahang Al-Sultan Abdullah (formerly Universiti Malaysia Pahang), Pekan, Malaysia in 2019. Then, he was a Postdoctoral Fellow at the Institute of Sustainable Energy, College of Engineering, Universiti Tenaga Nasional, Kajang, Malaysia. He is currently an Associate Professor of electrical engineering and renewable energy systems at Fahad Bin Sultan University, Tabuk, Saudi Arabia. His research interests include renewable energy systems, power electronics, grid integration, power quality, power system stability, and energy conversion.

Taha Selim Ustun received the Ph.D. degree in electrical engineering from Victoria University, Melbourne, Australia in 2013. He is currently a Senior Researcher with Fukushima Renewable Energy Institute (FREA), National Institute of Advanced Industrial Science and Technology (AIST), Koriyama, Japan, where he leads the Smart Grid Cybersecurity Laboratory. Prior to that, he was a Faculty Member with the School of Electrical and Computer Engineering, Carnegie Mellon University, Pittsburgh, USA. He has delivered talks for Qatar Foundation, the World Energy Council, the Waterloo Global Science Initiative, and the European Union Energy Initiative (EUEI). His research interests include power systems protection, communication in power networks, distributed generation, microgrid, electric vehicle integration, and cybersecurity in smart grids. He is a member of the IEC Renewable Energy Management WG 8 and IEC TC 57 WG 17. He also serves on the Editorial Board of IEEE Access, IEEE Transactions on Industrial Informatics, Energies, Electronics, Electricity, World Electric Vehicle Journal, and Information Journal.

Show less

History +

PDF (5345KB)

Abstract

In this work, an efficient AC-DC converter based on a bridgeless single-ended primary inductor converter (SEPIC) is proposed. Composed of only two anti-series switches, two diodes, two inductors, and one coupling capacitor, SEPIC has two different voltage outputs with inverted polarities, which makes it simpler and more attractive than the existing ones. More importantly, each output voltage can be individually adjusted by two different control loops, thus contributing to two different and independent duty cycles. With no need for a front-end diode bridge rectifier (DBR), its efficiency is enhanced. The simulation results on MATLAB/Simulink successfully validate that the converter is capable of supplying an output current in both directions. By connecting two independent loads to the output terminals, each with load characteristics of 100 V, 200 W, and 2 A which fit well with the application requirements of Fuji compact inverters, stable output voltages with a voltage ripple lower than 4.2% were obtained. The operating efficiency under rated load conditions was 95%, resulting in a 10% reduction in DBR usage. Moreover, the envelope of the input line current closely resembles the standard sinewave with a total harmonics distortion (THD) of 2.00%, while the AC load current has a THD of 6.89%, both within standard limits.

Keywords

AC drive applications / Bridgeless power factor correction / High voltage DC grid and photovoltaic inverter / Low power / Single-ended primary inductor converter

Cite this article

Download citation ▾

Khaled A. Mahafzah, Mohamad A. Obeidat, Ali Q. Al-Shetwi, Taha Selim Ustun. Bridgeless SEPIC-based AC-DC converter for compact inverter and low-power AC drive applications. Journal of Electronic Science and Technology, 2026, 24 (2) : 100356 DOI:10.1016/j.jnlest.2026.100356

登录浏览全文

4963

注册一个新账户忘记密码

CRediT authorship contribution statement

Khaled A. Mahafzah: Writing – original draft, Visualization, Methodology, Investigation, Formal analysis, Data curation, Conceptualization. Mohamad A. Obeidat: Writing – review & editing, Validation, Resources, Methodology, Investigation, Formal analysis. Ali Q. Al-Shetwi: Writing – review & editing, Validation, Investigation, Formal analysis, Data curation. Taha Selim Ustun: Writing – review & editing, Investigation, Formal analysis, Data curation, Conceptualization, Supervision.

Declaration of competing interest

The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

References

Publishing order | Descend order by publishing year | Descend order by cited within

[1]	A. Ganguly, P.K. Biswas, C. Sain, et al., Modern DC-DC power converter topologies and hybrid control strategies for maximum power output in sustainable nanogrids and picogrids—a comprehensive survey, Technologies, 1 1 (4) (2023) p. 102.

[2]	K.A. Mahafzah, M.A. Obeidat, A.Q. Al-Shetwi, et al., A novel synchronized multiple output DC-DC converter based on hybrid flyback-cuk topologies, Batteries, 8 (8) (2022) p. 93.

[3]	W.M. Lin, M.M. Hernando, A. Fernandez, et al., A new topology for passive PFC circuit design to allow AC-to-DC converters to comply with the new version of IEC1000-3-2 regulations, in: Proc. of the IEEE 33rd Annual IEEE Power Electronics Specialists Conf., Cairns, Australia, 2002, pp. 2050-2055.

[4]	P.R. Mohanty, A.K. Panda, D. Das, An active PFC boost converter topology for power factor correction, in: Proc. of Annual IEEE India Conf., New Delhi, India, 2015, pp. 1-5.

[5]	H. Luo, J.-P. Xu, D.-Y. He, et al., Pulse train control strategy for CCM boost PFC converter with improved dynamic response and unity power factor, IEEE T. Ind. Electron., 6 7 (12) (2020) pp. 10377-10387.

[6]	C.-P. Ku, D. Chen, C.-S. Huang, et al., A novel SFVM-M³ control scheme for interleaved CCM/DCM boundary-mode boost converter in PFC applications, IEEE T. Power Electr., 2 6 (8) (2011) pp. 2295-2303.

[7]	K.A. Mahafzah, Q.A. Azzam, I. Altawil, A soft switched single ended primary inductor converter power factor correction circuit for low power applications, Prz. Elektrotechniczn., 9 8 (7) (2022) p. 25.

[8]	T.S. Ustun, S. Mekhilef, Effects of a static synchronous series compensator (SSSC) based on a soft switching 48-pulse PWM inverter on the power demand from the grid, J. Power Electron., 1 0 (1) (2010) pp. 85-90.

[9]	H.-F. Wu, Y.-F. Zhang, Y.-H. Jia, Three-port bridgeless PFC-based quasi single-stage single-phase AC-DC converters for wide voltage range applications, IEEE T. Ind. Electron., 6 5 (7) (2018) pp. 5518-5528.

[10]	E.H. Ismail, Bridgeless SEPIC rectifier with unity power factor and reduced conduction losses, IEEE T. Ind. Electron., 5 6 (4) (2009) pp. 1147-1157.

[11]	M.R. Sahid, A.H.M. Yatim, T. Taufik, A new AC-DC converter using bridgeless SEPIC, in: Proc. of the 36th Annual Conf. on IEEE Industrial Electronics Society, Glendale, USA, 2010, pp. 286-290.

[12]	J.-W. Yang, H.-L. Do, Bridgeless SEPIC converter with a ripple-free input current, IEEE T. Power Electr., 2 8 (7) (2013) pp. 3388-3394.

[13]	Y. Onal, Y. Sozer, Bridgeless SEPIC PFC converter for low total harmonic distortion and high power factor, in: Proc. of IEEE Applied Power Electronics Conf. and Exposition (APEC), Long Beach, USA, 2016, pp. 2693-2699.

[14]	H.-B. Ma, Y. Li, J.-S. Lai, et al., An improved bridgeless SEPIC converter without circulating losses and input-voltage sensing, IEEE J. Em. Sel. Top. P., 6 (3) (2018) pp. 1447-1455.

[15]	X. Shen, W.-R. Chen, Q. Li, et al., A novel variable on-time control scheme for boundary conduction mode SEPIC PFC converter, Electronics, 1 2 (8) (2023) p. 1807.

[16]	I. Ahmed, A. Niloy, M. Al Haque, et al., Recent advancement of AC-DC SEPIC converter: a state-of-the-art review on topologies, technical aspects and applications, Results Eng. 27 (2025) 106814.

[17]	G. Sarowar, I. Ahmed, S. Rahman, et al., Investigation of a power factor correction converter utilizing SEPIC topology with input current switching, Results Eng. 22 (2024) 102271.

[18]	S. Bari, Q. Li, F.C. Lee, An enhanced adaptive frequency locked loop for variable frequency controls, in: Proc. of IEEE Applied Power Electronics Conf. and Exposition (APEC), Tampa, USA, 2017, pp. 3402-3408.

[19]	Fuji Electric Global, Drives & controls: Fuji electric AC drives (low voltage) Asia [Online]. Available November 2025, https://www.fujielectric.com/products/ac_drives_lv/asia/.