Design and Current Unbalance Control Method for a Center-Tapped LLC Resonant Converter on UHD TV

Kwangseung Cho; Sang Min Park; Xinlan Li; Geun Wan Koo; Byoung Kuk Lee

doi:10.1007/s42835-020-00466-x

Design and Current Unbalance Control Method for a Center-Tapped LLC Resonant Converter on UHD TV

Kwangseung Cho
, Sang Min Park
, Xinlan Li
, Geun Wan Koo
, Byoung Kuk Lee

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

1 Scopus citations

Abstract

This paper proposes a control algorithm for solving the unbalanced current of the primary side in an LLC converter that uses a center-tap rectifier on the secondary side in ultra-high definition TV applications. The current imbalance in the LLC converter using a center-tap rectifier causes thermal problems, low efficiency, and uncontrollability. The operational principle, primary side control algorithm, and design equation required to solve these problems are presented. The experimental results are presented to verify the efficiency and thermal improvement of proposed control algorithm.

Original language	English
Pages (from-to)	1735-1744
Number of pages	10
Journal	Journal of Electrical Engineering and Technology
Volume	15
Issue number	4
DOIs	https://doi.org/10.1007/s42835-020-00466-x
State	Published - 1 Jul 2020
Externally published	Yes

Keywords

Duty ratio control
Leakage inductance
LLC resonant converter
Transformer
UHD TV
Unbalance

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10.1007/s42835-020-00466-x

Cite this

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title = "Design and Current Unbalance Control Method for a Center-Tapped LLC Resonant Converter on UHD TV",

abstract = "This paper proposes a control algorithm for solving the unbalanced current of the primary side in an LLC converter that uses a center-tap rectifier on the secondary side in ultra-high definition TV applications. The current imbalance in the LLC converter using a center-tap rectifier causes thermal problems, low efficiency, and uncontrollability. The operational principle, primary side control algorithm, and design equation required to solve these problems are presented. The experimental results are presented to verify the efficiency and thermal improvement of proposed control algorithm.",

keywords = "Duty ratio control, Leakage inductance, LLC resonant converter, Transformer, UHD TV, Unbalance",

author = "Kwangseung Cho and Park, \{Sang Min\} and Xinlan Li and Koo, \{Geun Wan\} and Lee, \{Byoung Kuk\}",

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AU - Cho, Kwangseung

AU - Park, Sang Min

AU - Li, Xinlan

AU - Koo, Geun Wan

AU - Lee, Byoung Kuk

PY - 2020/7/1

Y1 - 2020/7/1

N2 - This paper proposes a control algorithm for solving the unbalanced current of the primary side in an LLC converter that uses a center-tap rectifier on the secondary side in ultra-high definition TV applications. The current imbalance in the LLC converter using a center-tap rectifier causes thermal problems, low efficiency, and uncontrollability. The operational principle, primary side control algorithm, and design equation required to solve these problems are presented. The experimental results are presented to verify the efficiency and thermal improvement of proposed control algorithm.

AB - This paper proposes a control algorithm for solving the unbalanced current of the primary side in an LLC converter that uses a center-tap rectifier on the secondary side in ultra-high definition TV applications. The current imbalance in the LLC converter using a center-tap rectifier causes thermal problems, low efficiency, and uncontrollability. The operational principle, primary side control algorithm, and design equation required to solve these problems are presented. The experimental results are presented to verify the efficiency and thermal improvement of proposed control algorithm.

KW - Duty ratio control

KW - Leakage inductance

KW - LLC resonant converter

KW - Transformer

KW - UHD TV

KW - Unbalance

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ER -

Design and Current Unbalance Control Method for a Center-Tapped LLC Resonant Converter on UHD TV

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Keywords

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