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Performance Validation of a Bridgeless Interleaved Boost PFC Converter for Battery Charging Application

Al-Hysam, Abdullah LU orcid ; Ali, Zaid ; Alaküla, Mats LU orcid and Raisz, Dávid (2026) In e-Prime – Nexus of Electrical, Electronic, and Intelligent Engineering 17.
Abstract
Modern battery chargers require AC-DC converters with high input power quality, nearly unity power factor, and low current harmonics to meet grid standards such as IEC 61000-3-2. This paper proposes a two-stage charger topology: a front-end bridgeless interleaved boost PFC converter followed by a synchronous buck DC-DC stage. The interleaved boost stage reduces input current ripple and losses while regulating the DC-link voltage, and the synchronous buck stage supports constant-current/constant-voltage (CC-CV) charging. A closed-loop controller is designed via small-signal modeling of the PFC stage to ensure stable voltage regulation under dynamic conditions. The proposed converter achieves improved power quality (nearly unity input power... (More)
Modern battery chargers require AC-DC converters with high input power quality, nearly unity power factor, and low current harmonics to meet grid standards such as IEC 61000-3-2. This paper proposes a two-stage charger topology: a front-end bridgeless interleaved boost PFC converter followed by a synchronous buck DC-DC stage. The interleaved boost stage reduces input current ripple and losses while regulating the DC-link voltage, and the synchronous buck stage supports constant-current/constant-voltage (CC-CV) charging. A closed-loop controller is designed via small-signal modeling of the PFC stage to ensure stable voltage regulation under dynamic conditions. The proposed converter achieves improved power quality (nearly unity input power factor and low input-current THD) without a complex grid-synchronization control algorithm, such as a phase-locked loop (PLL), thereby meeting the IEC 61000-3-2 standard. The simulation results are experimentally supported in a power hardware-in-the-loop (PHIL) laboratory environment, with accurate output-voltage control as predicted theoretically. These results confirm the effectiveness of the bridgeless interleaved boost PFC, cascaded with a synchronous buck architecture, in improving power quality and voltage regulation for battery charging applications. (Less)
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author
; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
power factor correction, Total harmonic distortion, Small-signal modeling, Interleaved
in
e-Prime – Nexus of Electrical, Electronic, and Intelligent Engineering
volume
17
article number
201181
publisher
Elsevier
ISSN
3117-5112
DOI
10.1016/j.eprime.2026.201181
project
Cost-effective and robust charging infrastructure from a site perspective
language
English
LU publication?
yes
id
7cc5c696-a4d2-460c-a3df-1c61d9e4431d
date added to LUP
2026-04-10 12:26:55
date last changed
2026-04-17 10:57:06
@article{7cc5c696-a4d2-460c-a3df-1c61d9e4431d,
  abstract     = {{Modern battery chargers require AC-DC converters with high input power quality, nearly unity power factor, and low current harmonics to meet grid standards such as IEC 61000-3-2. This paper proposes a two-stage charger topology: a front-end bridgeless interleaved boost PFC converter followed by a synchronous buck DC-DC stage. The interleaved boost stage reduces input current ripple and losses while regulating the DC-link voltage, and the synchronous buck stage supports constant-current/constant-voltage (CC-CV) charging. A closed-loop controller is designed via small-signal modeling of the PFC stage to ensure stable voltage regulation under dynamic conditions. The proposed converter achieves improved power quality (nearly unity input power factor and low input-current THD) without a complex grid-synchronization control algorithm, such as a phase-locked loop (PLL), thereby meeting the IEC 61000-3-2 standard. The simulation results are experimentally supported in a power hardware-in-the-loop (PHIL) laboratory environment, with accurate output-voltage control as predicted theoretically. These results confirm the effectiveness of the bridgeless interleaved boost PFC, cascaded with a synchronous buck architecture, in improving power quality and voltage regulation for battery charging applications.}},
  author       = {{Al-Hysam, Abdullah and Ali, Zaid and Alaküla, Mats and Raisz, Dávid}},
  issn         = {{3117-5112}},
  keywords     = {{power factor correction; Total harmonic distortion; Small-signal modeling; Interleaved}},
  language     = {{eng}},
  month        = {{04}},
  publisher    = {{Elsevier}},
  series       = {{e-Prime – Nexus of Electrical, Electronic, and Intelligent Engineering}},
  title        = {{Performance Validation of a Bridgeless Interleaved Boost PFC Converter for Battery Charging Application}},
  url          = {{http://dx.doi.org/10.1016/j.eprime.2026.201181}},
  doi          = {{10.1016/j.eprime.2026.201181}},
  volume       = {{17}},
  year         = {{2026}},
}