Smart Efficiency Tracking for Novel Switch—LLC Converter for Battery Charging Applications

Eser Çalışkan; Ozgur Ustun

doi:10.3390/en15051861

Smart Efficiency Tracking for Novel Switch—LLC Converter for Battery Charging Applications

Eser Çalışkan^*
, Ozgur Ustun

^*Corresponding author for this work

Department of Electrical Engineering

Istanbul Technical University

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

In this study, a novel smart efficiency tracking (SET) algorithm for GaN-based LLC resonant converter for quick battery charging of light electric vehicles is proposed. Conventional frequency modulation (FM) method, single pulse width modulation method (S-PWM) and discontinuous operation mode method (DOM) are used to track the converter efficiency which varies for different loading conditions during the battery charging process. First, the charging modes are explained to define the efficiency variation clearly. Then, the theoretical background of GaN-based LLC resonant converter is presented and the details of design study are given. Third, the principles of three different switching control strategies, the modeling study and the simulation results are put forward. Finally, the details of the implementation of three different switching strategies are presented for the validation of the study. Furthermore, the implementation of the design and its impact on battery charging are discussed. The proposed efficiency tracking method is validated with a 20% efficiency increase for the low loading conditions of GaN-based LLC converter.

Original language	English
Article number	1861
Journal	Energies
Volume	15
Issue number	5
DOIs	https://doi.org/10.3390/en15051861
Publication status	Published - 1 Mar 2022

Bibliographical note

Publisher Copyright:
© 2022 by the authors. Licensee MDPI, Basel, Switzerland.

Funding

Funding: This research received no external funding and the APC was jointly funded by both authors.

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

Discontinuous operation mode (DOM)
Frequency modulation (FM)
GaN-based LLC resonant converter
Light electric vehicle battery charging
S-PWM
Smart efficiency tracking (SET)

Access to Document

10.3390/en15051861

Cite this

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title = "Smart Efficiency Tracking for Novel Switch—LLC Converter for Battery Charging Applications",

abstract = "In this study, a novel smart efficiency tracking (SET) algorithm for GaN-based LLC resonant converter for quick battery charging of light electric vehicles is proposed. Conventional frequency modulation (FM) method, single pulse width modulation method (S-PWM) and discontinuous operation mode method (DOM) are used to track the converter efficiency which varies for different loading conditions during the battery charging process. First, the charging modes are explained to define the efficiency variation clearly. Then, the theoretical background of GaN-based LLC resonant converter is presented and the details of design study are given. Third, the principles of three different switching control strategies, the modeling study and the simulation results are put forward. Finally, the details of the implementation of three different switching strategies are presented for the validation of the study. Furthermore, the implementation of the design and its impact on battery charging are discussed. The proposed efficiency tracking method is validated with a 20\% efficiency increase for the low loading conditions of GaN-based LLC converter.",

keywords = "Discontinuous operation mode (DOM), Frequency modulation (FM), GaN-based LLC resonant converter, Light electric vehicle battery charging, S-PWM, Smart efficiency tracking (SET)",

author = "Eser {\c C}alı{\c s}kan and Ozgur Ustun",

note = "Publisher Copyright: {\textcopyright} 2022 by the authors. Licensee MDPI, Basel, Switzerland.",

year = "2022",

month = mar,

day = "1",

doi = "10.3390/en15051861",

language = "English",

volume = "15",

journal = "Energies",

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T1 - Smart Efficiency Tracking for Novel Switch—LLC Converter for Battery Charging Applications

AU - Çalışkan, Eser

AU - Ustun, Ozgur

PY - 2022/3/1

Y1 - 2022/3/1

N2 - In this study, a novel smart efficiency tracking (SET) algorithm for GaN-based LLC resonant converter for quick battery charging of light electric vehicles is proposed. Conventional frequency modulation (FM) method, single pulse width modulation method (S-PWM) and discontinuous operation mode method (DOM) are used to track the converter efficiency which varies for different loading conditions during the battery charging process. First, the charging modes are explained to define the efficiency variation clearly. Then, the theoretical background of GaN-based LLC resonant converter is presented and the details of design study are given. Third, the principles of three different switching control strategies, the modeling study and the simulation results are put forward. Finally, the details of the implementation of three different switching strategies are presented for the validation of the study. Furthermore, the implementation of the design and its impact on battery charging are discussed. The proposed efficiency tracking method is validated with a 20% efficiency increase for the low loading conditions of GaN-based LLC converter.

AB - In this study, a novel smart efficiency tracking (SET) algorithm for GaN-based LLC resonant converter for quick battery charging of light electric vehicles is proposed. Conventional frequency modulation (FM) method, single pulse width modulation method (S-PWM) and discontinuous operation mode method (DOM) are used to track the converter efficiency which varies for different loading conditions during the battery charging process. First, the charging modes are explained to define the efficiency variation clearly. Then, the theoretical background of GaN-based LLC resonant converter is presented and the details of design study are given. Third, the principles of three different switching control strategies, the modeling study and the simulation results are put forward. Finally, the details of the implementation of three different switching strategies are presented for the validation of the study. Furthermore, the implementation of the design and its impact on battery charging are discussed. The proposed efficiency tracking method is validated with a 20% efficiency increase for the low loading conditions of GaN-based LLC converter.

KW - Discontinuous operation mode (DOM)

KW - Frequency modulation (FM)

KW - GaN-based LLC resonant converter

KW - Light electric vehicle battery charging

KW - S-PWM

KW - Smart efficiency tracking (SET)

UR - https://www.scopus.com/pages/publications/85126334934

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DO - 10.3390/en15051861

M3 - Article

AN - SCOPUS:85126334934

SN - 1996-1073

VL - 15

JO - Energies

JF - Energies

IS - 5

M1 - 1861

ER -

Smart Efficiency Tracking for Novel Switch—LLC Converter for Battery Charging Applications

Abstract

Bibliographical note

Funding

UN SDGs

Keywords

Access to Document

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Cite this