A digital controlled short-circuit current limiting method for LLC converters with fast response and resonant current limiting

Jiwen Wei; Xu Yang; Gaohao Wei; Kangping Wang; Wenjie Chen

doi:10.1109/ECCE50734.2022.9947804

A digital controlled short-circuit current limiting method for LLC converters with fast response and resonant current limiting

Jiwen Wei
, Xu Yang
, Gaohao Wei
, Kangping Wang
, Wenjie Chen

School of Electrical Engineering

Xi'an Jiaotong University

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

1 Scopus citations

Abstract

The increasing-frequency method is one of the most easy and practical ways of current limiting for LLC since it requires no additional components and ZVS can be realized all the time. However, when applying this method, previous study makes no attempt to limit the peak resonant current in dynamic state or to accurate the output current in steady state, and the large output current spike lasting time is not the minimized. This paper proposed a digital controlled short-circuit current limiting method for LLC converters. The method including 4 steps, has faster output current spike dropping time, and can limit the dynamic resonant current and precisely regulate the steady-state output current, which provides a safer guarantee for LLC's post-stage circuit. And the method is also suitable for parallel LLC, which can realize current sharing. The method was verified on two 1.5kW LLC.

Original language	English
Title of host publication	2022 IEEE Energy Conversion Congress and Exposition, ECCE 2022
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9781728193878
DOIs	https://doi.org/10.1109/ECCE50734.2022.9947804
State	Published - 2022
Event	2022 IEEE Energy Conversion Congress and Exposition, ECCE 2022 - Detroit, United States Duration: 9 Oct 2022 → 13 Oct 2022

Publication series

Name	2022 IEEE Energy Conversion Congress and Exposition, ECCE 2022

Conference

Conference	2022 IEEE Energy Conversion Congress and Exposition, ECCE 2022
Country/Territory	United States
City	Detroit
Period	9/10/22 → 13/10/22

UN SDGs

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

SDG 7 Affordable and Clean Energy

Keywords

LLC
current limiting
digital control
short-circuit

Access to Document

10.1109/ECCE50734.2022.9947804

Cite this

Wei, J., Yang, X., Wei, G., Wang, K., & Chen, W. (2022). A digital controlled short-circuit current limiting method for LLC converters with fast response and resonant current limiting. In 2022 IEEE Energy Conversion Congress and Exposition, ECCE 2022 (2022 IEEE Energy Conversion Congress and Exposition, ECCE 2022). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ECCE50734.2022.9947804

@inproceedings{fbde6012ee1e485e8afa4603de145cf0,

title = "A digital controlled short-circuit current limiting method for LLC converters with fast response and resonant current limiting",

abstract = "The increasing-frequency method is one of the most easy and practical ways of current limiting for LLC since it requires no additional components and ZVS can be realized all the time. However, when applying this method, previous study makes no attempt to limit the peak resonant current in dynamic state or to accurate the output current in steady state, and the large output current spike lasting time is not the minimized. This paper proposed a digital controlled short-circuit current limiting method for LLC converters. The method including 4 steps, has faster output current spike dropping time, and can limit the dynamic resonant current and precisely regulate the steady-state output current, which provides a safer guarantee for LLC's post-stage circuit. And the method is also suitable for parallel LLC, which can realize current sharing. The method was verified on two 1.5kW LLC.",

keywords = "LLC, current limiting, digital control, short-circuit",

author = "Jiwen Wei and Xu Yang and Gaohao Wei and Kangping Wang and Wenjie Chen",

note = "Publisher Copyright: {\textcopyright} 2022 IEEE.; 2022 IEEE Energy Conversion Congress and Exposition, ECCE 2022 ; Conference date: 09-10-2022 Through 13-10-2022",

year = "2022",

doi = "10.1109/ECCE50734.2022.9947804",

language = "英语",

series = "2022 IEEE Energy Conversion Congress and Exposition, ECCE 2022",

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

booktitle = "2022 IEEE Energy Conversion Congress and Exposition, ECCE 2022",

}

Wei, J, Yang, X, Wei, G, Wang, K & Chen, W 2022, A digital controlled short-circuit current limiting method for LLC converters with fast response and resonant current limiting. in 2022 IEEE Energy Conversion Congress and Exposition, ECCE 2022. 2022 IEEE Energy Conversion Congress and Exposition, ECCE 2022, Institute of Electrical and Electronics Engineers Inc., 2022 IEEE Energy Conversion Congress and Exposition, ECCE 2022, Detroit, United States, 9/10/22. https://doi.org/10.1109/ECCE50734.2022.9947804

A digital controlled short-circuit current limiting method for LLC converters with fast response and resonant current limiting. / Wei, Jiwen; Yang, Xu; Wei, Gaohao et al.
2022 IEEE Energy Conversion Congress and Exposition, ECCE 2022. Institute of Electrical and Electronics Engineers Inc., 2022. (2022 IEEE Energy Conversion Congress and Exposition, ECCE 2022).

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

TY - GEN

T1 - A digital controlled short-circuit current limiting method for LLC converters with fast response and resonant current limiting

AU - Wei, Jiwen

AU - Yang, Xu

AU - Wei, Gaohao

AU - Wang, Kangping

AU - Chen, Wenjie

PY - 2022

Y1 - 2022

N2 - The increasing-frequency method is one of the most easy and practical ways of current limiting for LLC since it requires no additional components and ZVS can be realized all the time. However, when applying this method, previous study makes no attempt to limit the peak resonant current in dynamic state or to accurate the output current in steady state, and the large output current spike lasting time is not the minimized. This paper proposed a digital controlled short-circuit current limiting method for LLC converters. The method including 4 steps, has faster output current spike dropping time, and can limit the dynamic resonant current and precisely regulate the steady-state output current, which provides a safer guarantee for LLC's post-stage circuit. And the method is also suitable for parallel LLC, which can realize current sharing. The method was verified on two 1.5kW LLC.

AB - The increasing-frequency method is one of the most easy and practical ways of current limiting for LLC since it requires no additional components and ZVS can be realized all the time. However, when applying this method, previous study makes no attempt to limit the peak resonant current in dynamic state or to accurate the output current in steady state, and the large output current spike lasting time is not the minimized. This paper proposed a digital controlled short-circuit current limiting method for LLC converters. The method including 4 steps, has faster output current spike dropping time, and can limit the dynamic resonant current and precisely regulate the steady-state output current, which provides a safer guarantee for LLC's post-stage circuit. And the method is also suitable for parallel LLC, which can realize current sharing. The method was verified on two 1.5kW LLC.

KW - LLC

KW - current limiting

KW - digital control

KW - short-circuit

UR - https://www.scopus.com/pages/publications/85144057422

U2 - 10.1109/ECCE50734.2022.9947804

DO - 10.1109/ECCE50734.2022.9947804

M3 - 会议稿件

AN - SCOPUS:85144057422

T3 - 2022 IEEE Energy Conversion Congress and Exposition, ECCE 2022

BT - 2022 IEEE Energy Conversion Congress and Exposition, ECCE 2022

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 2022 IEEE Energy Conversion Congress and Exposition, ECCE 2022

Y2 - 9 October 2022 through 13 October 2022

ER -

Wei J, Yang X, Wei G, Wang K , Chen W. A digital controlled short-circuit current limiting method for LLC converters with fast response and resonant current limiting. In 2022 IEEE Energy Conversion Congress and Exposition, ECCE 2022. Institute of Electrical and Electronics Engineers Inc. 2022. (2022 IEEE Energy Conversion Congress and Exposition, ECCE 2022). doi: 10.1109/ECCE50734.2022.9947804

A digital controlled short-circuit current limiting method for LLC converters with fast response and resonant current limiting

Abstract

Publication series

Conference

UN SDGs

Keywords

Access to Document

Other files and links

Fingerprint

Cite this