An Accurate Time Domain Analysis Based ZVS Evaluation Tool for LLC Resonant Converters

Yuqi Wei; Alan Mantooth

doi:10.1109/PEDG51384.2021.9494223

An Accurate Time Domain Analysis Based ZVS Evaluation Tool for LLC Resonant Converters

Yuqi Wei
, Alan Mantooth

University of Arkansas, Fayetteville

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

4 Scopus citations

Abstract

LLC converters are popular in numerous industrial applications owning to their high efficiency and soft switching characteristics. Conventionally, the first harmonic approximation (FHA) analysis method is used to perform the zero-voltage switching (ZVS) analysis for LLC resonant converter. However, the FHA method assumes that the LLC resonant converter is always operating at resonant frequency point so that the primary switch turn-off current is a constant value during the whole operation range. When the LLC resonant converter operating point is away from the resonant frequency, considerable errors would exist, which will lead to unoptimized deadtime design or ZVS failure. Therefore, in this article, a ZVS evaluation tool is developed based on the time domain analysis, the analysis results have much higher accuracy when compared with the traditional FHA method, which can be used to guide the analysis and design of the converter. Experimental validations are presented.

Original language	English
Title of host publication	Proceedings of the 2021 IEEE 12th International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2021
Editors	Sudip K. Mazumder, Juan Carlos Balda, Lina He, Jianzhe Liu, Ankit Gupta
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9780738142371
DOIs	https://doi.org/10.1109/PEDG51384.2021.9494223
State	Published - 28 Jun 2021
Externally published	Yes
Event	12th IEEE International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2021 - Virtual, Online Duration: 28 Jun 2021 → 1 Jul 2021

Publication series

Name	Proceedings of the 2021 IEEE 12th International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2021

Conference

Conference	12th IEEE International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2021
City	Virtual, Online
Period	28/06/21 → 1/07/21

UN SDGs

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

SDG 7 Affordable and Clean Energy

Keywords

LLC resonant converter
ZVS operation
deadtime analysis

Access to Document

10.1109/PEDG51384.2021.9494223

Cite this

Wei, Y., & Mantooth, A. (2021). An Accurate Time Domain Analysis Based ZVS Evaluation Tool for LLC Resonant Converters. In S. K. Mazumder, J. C. Balda, L. He, J. Liu, & A. Gupta (Eds.), Proceedings of the 2021 IEEE 12th International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2021 Article 9494223 (Proceedings of the 2021 IEEE 12th International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2021). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/PEDG51384.2021.9494223

Wei, Yuqi ; Mantooth, Alan. / An Accurate Time Domain Analysis Based ZVS Evaluation Tool for LLC Resonant Converters. Proceedings of the 2021 IEEE 12th International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2021. editor / Sudip K. Mazumder ; Juan Carlos Balda ; Lina He ; Jianzhe Liu ; Ankit Gupta. Institute of Electrical and Electronics Engineers Inc., 2021. (Proceedings of the 2021 IEEE 12th International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2021).

@inproceedings{3b07469e79454e27a5f59575ec02a0cf,

title = "An Accurate Time Domain Analysis Based ZVS Evaluation Tool for LLC Resonant Converters",

abstract = "LLC converters are popular in numerous industrial applications owning to their high efficiency and soft switching characteristics. Conventionally, the first harmonic approximation (FHA) analysis method is used to perform the zero-voltage switching (ZVS) analysis for LLC resonant converter. However, the FHA method assumes that the LLC resonant converter is always operating at resonant frequency point so that the primary switch turn-off current is a constant value during the whole operation range. When the LLC resonant converter operating point is away from the resonant frequency, considerable errors would exist, which will lead to unoptimized deadtime design or ZVS failure. Therefore, in this article, a ZVS evaluation tool is developed based on the time domain analysis, the analysis results have much higher accuracy when compared with the traditional FHA method, which can be used to guide the analysis and design of the converter. Experimental validations are presented.",

keywords = "LLC resonant converter, ZVS operation, deadtime analysis",

author = "Yuqi Wei and Alan Mantooth",

note = "Publisher Copyright: {\textcopyright} 2021 IEEE.; 12th IEEE International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2021 ; Conference date: 28-06-2021 Through 01-07-2021",

year = "2021",

month = jun,

day = "28",

doi = "10.1109/PEDG51384.2021.9494223",

language = "英语",

series = "Proceedings of the 2021 IEEE 12th International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2021",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

editor = "Mazumder, \{Sudip K.\} and Balda, \{Juan Carlos\} and Lina He and Jianzhe Liu and Ankit Gupta",

booktitle = "Proceedings of the 2021 IEEE 12th International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2021",

}

Wei, Y & Mantooth, A 2021, An Accurate Time Domain Analysis Based ZVS Evaluation Tool for LLC Resonant Converters. in SK Mazumder, JC Balda, L He, J Liu & A Gupta (eds), Proceedings of the 2021 IEEE 12th International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2021., 9494223, Proceedings of the 2021 IEEE 12th International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2021, Institute of Electrical and Electronics Engineers Inc., 12th IEEE International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2021, Virtual, Online, 28/06/21. https://doi.org/10.1109/PEDG51384.2021.9494223

An Accurate Time Domain Analysis Based ZVS Evaluation Tool for LLC Resonant Converters. / Wei, Yuqi; Mantooth, Alan.
Proceedings of the 2021 IEEE 12th International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2021. ed. / Sudip K. Mazumder; Juan Carlos Balda; Lina He; Jianzhe Liu; Ankit Gupta. Institute of Electrical and Electronics Engineers Inc., 2021. 9494223 (Proceedings of the 2021 IEEE 12th International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2021).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - An Accurate Time Domain Analysis Based ZVS Evaluation Tool for LLC Resonant Converters

AU - Wei, Yuqi

AU - Mantooth, Alan

PY - 2021/6/28

Y1 - 2021/6/28

N2 - LLC converters are popular in numerous industrial applications owning to their high efficiency and soft switching characteristics. Conventionally, the first harmonic approximation (FHA) analysis method is used to perform the zero-voltage switching (ZVS) analysis for LLC resonant converter. However, the FHA method assumes that the LLC resonant converter is always operating at resonant frequency point so that the primary switch turn-off current is a constant value during the whole operation range. When the LLC resonant converter operating point is away from the resonant frequency, considerable errors would exist, which will lead to unoptimized deadtime design or ZVS failure. Therefore, in this article, a ZVS evaluation tool is developed based on the time domain analysis, the analysis results have much higher accuracy when compared with the traditional FHA method, which can be used to guide the analysis and design of the converter. Experimental validations are presented.

AB - LLC converters are popular in numerous industrial applications owning to their high efficiency and soft switching characteristics. Conventionally, the first harmonic approximation (FHA) analysis method is used to perform the zero-voltage switching (ZVS) analysis for LLC resonant converter. However, the FHA method assumes that the LLC resonant converter is always operating at resonant frequency point so that the primary switch turn-off current is a constant value during the whole operation range. When the LLC resonant converter operating point is away from the resonant frequency, considerable errors would exist, which will lead to unoptimized deadtime design or ZVS failure. Therefore, in this article, a ZVS evaluation tool is developed based on the time domain analysis, the analysis results have much higher accuracy when compared with the traditional FHA method, which can be used to guide the analysis and design of the converter. Experimental validations are presented.

KW - LLC resonant converter

KW - ZVS operation

KW - deadtime analysis

UR - https://www.scopus.com/pages/publications/85112382406

U2 - 10.1109/PEDG51384.2021.9494223

DO - 10.1109/PEDG51384.2021.9494223

M3 - 会议稿件

AN - SCOPUS:85112382406

T3 - Proceedings of the 2021 IEEE 12th International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2021

BT - Proceedings of the 2021 IEEE 12th International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2021

A2 - Mazumder, Sudip K.

A2 - Balda, Juan Carlos

A2 - He, Lina

A2 - Liu, Jianzhe

A2 - Gupta, Ankit

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 12th IEEE International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2021

Y2 - 28 June 2021 through 1 July 2021

ER -

Wei Y, Mantooth A. An Accurate Time Domain Analysis Based ZVS Evaluation Tool for LLC Resonant Converters. In Mazumder SK, Balda JC, He L, Liu J, Gupta A, editors, Proceedings of the 2021 IEEE 12th International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2021. Institute of Electrical and Electronics Engineers Inc. 2021. 9494223. (Proceedings of the 2021 IEEE 12th International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2021). doi: 10.1109/PEDG51384.2021.9494223

An Accurate Time Domain Analysis Based ZVS Evaluation Tool for LLC Resonant Converters

Abstract

Publication series

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UN SDGs

Keywords

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