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A versatile three-level CLLC resonant converter for off-board EV chargers with wide voltage adaptability contribution

International Journal of Power Electronics and Drive Systems · Vol. 16 No. 3 (2025) · pp. 1775–1788

DOI
10.11591/ijpeds.v16.i3.pp1775-1788
ISSN
2722-256X, 2088-8694
Published
2025-09-01
Publisher
Institute of Advanced Engineering and Science
Language
eng
License
creativecommons.org/licenses/by-sa/4.0

Abstract

The vehicle-to-grid (V2G) concept has gained significant attention in the last decade due to its potential to enhance direct current (DC) microgrid stability and reliability. Electric vehicles (EVs) play a central role in distributed energy storage systems, optimizing efficiency and enabling the integration of renewable energy sources. This study offers a unique three level CLLC resonant converter developed for off-board EV chargers to promote bidirectional power transfer between DC microgrids and EVs. The suggested converter uses resonant CLLC components and two three-level full bridges to effectively handle a broad range of EV battery voltages (200 V–700 V). To ensure effective power conversion, the first harmonic approximation (FHA) model is used to analyse the converter's resonant frequency characteristics. The proposed system achieves high efficiency (>95%), with voltage stability maintained at 750 V under various load conditions. The converter's performance was validated through MATLAB based simulations, comparing proportional integral (PI) and proportional integral derivative (PID) control strategies. The PID-controlled system demonstrated superior dynamic response, reduced current ripples, and enhanced voltage regulation compared to the PI-controlled system. This study demonstrates the viability of implementing a three-level CLLC resonant converter for efficient, bidirectional, and wide-voltage adaptation in EV charging infrastructure, thereby contributing to grid stability and renewable energy integration.

Keywords

Collaboration network of the authors

40 authors · 179 co-authorship links · 1 across different organisations · showing the 40 most connected

Hover or tap a name to highlight its co-authors. Double-click to open the author's page.

  • Koneru Lakshmaiah Education Foundation
  • Jawaharlal Nehru Technological University, Hyderabad
  • Affiliation unknown
  • Different organisations
  • Same organisation
  • Affiliation unknown
  • Thicker line = more joint articles · bigger circle = more articles
Show as table
Co-authorOrganisationJoint articles
Bhavana PabbuletiAffiliation unknown5
Ravi PonnalaAffiliation unknown5
Ch. Rami ReddyAffiliation unknown4
Srungaram Ravi TejaAffiliation unknown4
B. JyothiKoneru Lakshmaiah Education Foundation3
Tellapati Anuradha DeviAffiliation unknown3
Chilakala Rami ReddyAffiliation unknown3
Batchalakuri JyothiAffiliation unknown3
Patil MounikaAffiliation unknown3
Edara Shiva PrasadAffiliation unknown3
Enukonda SoumyaAffiliation unknown3
K V Govardhan RaoAffiliation unknown2
S. Sai SrilakshmiAffiliation unknown2
Putta Dhanush NarasimhaAffiliation unknown2
Mareboyina Karthik YadavAffiliation unknown2
Kolli SujranAffiliation unknown2
Ankala SirishaAffiliation unknown2
Ganapaneni SwapnaAffiliation unknown2
T. Vijay MuniAffiliation unknown2
CH. Venkata AmarnadhAffiliation unknown2
T. Anuradha DeviAffiliation unknown2
Mudundi RekhaKoneru Lakshmaiah Education Foundation1
Anuradha Devi TellapatiKoneru Lakshmaiah Education Foundation1
Bodapati Venkata RajannaKoneru Lakshmaiah Education Foundation1
D. Ravi KumarJawaharlal Nehru Technological University, Hyderabad1
Manne BharathiAffiliation unknown1
I. S. N. V. R. PrasanthAffiliation unknown1
N. Sumana KeerthiAffiliation unknown1
M. SharanyaAffiliation unknown1
CH. SrinivasAffiliation unknown1
K. ShravaniAffiliation unknown1
V. Sanjeeva RaoAffiliation unknown1
Teerdala RakeshAffiliation unknown1
Nittala RamchandraAffiliation unknown1

Affiliations come from OpenAlex; journal OAI-PMH metadata carries none. Authors without an OpenAlex ID are matched by name, which can merge or split people.

Metadata source: OAI-PMH (metadata jurnal) http://ijpeds.iaescore.com/index.php/IJPEDS/oai, first harvested 8 Nov 2026, last seen 8 Nov 2026.
Original metadata (oai_dc) 
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	<dc:title xml:lang="en-US">A versatile three-level CLLC resonant converter for off-board EV chargers with wide voltage adaptability contribution</dc:title>
	<dc:creator>Guttikonda, Chandra Babu</dc:creator>
	<dc:creator>Varma, Pinni Srinivasa</dc:creator>
	<dc:creator>Kumar, Malligunta Kiran</dc:creator>
	<dc:creator>Rao, Kambhampati Venkata Govardhan</dc:creator>
	<dc:creator>Teerdala, Rakesh</dc:creator>
	<dc:creator>Kanagala, Santoshi</dc:creator>
	<dc:subject xml:lang="en-US">DC microgrid; electric vehicles; off-board EV charger; renewable energy integration; vehicle-to-grid</dc:subject>
	<dc:description xml:lang="en-US">The vehicle-to-grid (V2G) concept has gained significant attention in the last decade due to its potential to enhance direct current (DC) microgrid stability and reliability. Electric vehicles (EVs) play a central role in distributed energy storage systems, optimizing efficiency and enabling the integration of renewable energy sources. This study offers a unique three level CLLC resonant converter developed for off-board EV chargers to promote bidirectional power transfer between DC microgrids and EVs. The suggested converter uses resonant CLLC components and two three-level full bridges to effectively handle a broad range of EV battery voltages (200 V–700 V). To ensure effective power conversion, the first harmonic approximation (FHA) model is used to analyse the converter's resonant frequency characteristics. The proposed system achieves high efficiency (&amp;gt;95%), with voltage stability maintained at 750 V under various load conditions. The converter's performance was validated through MATLAB based simulations, comparing proportional integral (PI) and proportional integral derivative (PID) control strategies. The PID-controlled system demonstrated superior dynamic response, reduced current ripples, and enhanced voltage regulation compared to the PI-controlled system. This study demonstrates the viability of implementing a three-level CLLC resonant converter for efficient, bidirectional, and wide-voltage adaptation in EV charging infrastructure, thereby contributing to grid stability and renewable energy integration.</dc:description>
	<dc:publisher xml:lang="en-US">Institute of Advanced Engineering and Science</dc:publisher>
	<dc:contributor xml:lang="en-US"></dc:contributor>
	<dc:date>2025-09-01</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US"></dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ijpeds.iaescore.com/index.php/IJPEDS/article/view/24022</dc:identifier>
	<dc:identifier>10.11591/ijpeds.v16.i3.pp1775-1788</dc:identifier>
	<dc:source xml:lang="en-US">International Journal of Power Electronics and Drive Systems (IJPEDS); Vol 16, No 3: September 2025; 1775-1788</dc:source>
	<dc:source>2722-256X</dc:source>
	<dc:source>2088-8694</dc:source>
	<dc:source>10.11591/ijpeds.v16.i3</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ijpeds.iaescore.com/index.php/IJPEDS/article/view/24022/15015</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2025 Chandra Babu Guttikonda, Pinni Srinivasa Varma, Malligunta Kiran Kumar, Kambhampati Venkata Govardhan Rao, Rakesh Teerdala, Santoshi Kanagala</dc:rights>
	<dc:rights xml:lang="en-US">http://creativecommons.org/licenses/by-sa/4.0</dc:rights>
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