A Fluxgate-based Current Sensor for DC Bias Elimination in a Dual Active Bridge Converter

Guanqun  Qiu; Ran Li; Haolu Feng; Huaping  Jiang; Teng  Long; Andrew Forsyth; WeiHua  Shao; Xu  Hou

doi:10.1109/TPEL.2021.3114354

A Fluxgate-based Current Sensor for DC Bias Elimination in a Dual Active Bridge Converter

Guanqun Qiu, Ran Li, Haolu Feng, Huaping Jiang, Teng Long, Andrew Forsyth, WeiHua Shao, Xu Hou

EEE - Academic & Research

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

Abstract

A concern with the isolation transformer in a dual active bridge (DAB) DC-DC converter is the DC bias in magnetization. This paper proposes a fluxgate-based current sensor to measure the DC component mixed with a large, high-frequency AC current. Compared with a commercial Hall effect current sensor, the proposed sensor significantly reduces measurement error. This paper presents the working principle and design considerations. A prototype is demonstrated for DC bias elimination control in a DAB converter.

Original language	English
Journal	IEEE Transactions on Power Electronics
Early online date	21 Sept 2021
DOIs	https://doi.org/10.1109/TPEL.2021.3114354
Publication status	Published - 21 Sept 2021

Keywords

Current measurement
Current transformers
Magnetic flux
Magnetic separation
Saturation magnetization
Transformer cores
Windings

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10.1109/TPEL.2021.3114354

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title = "A Fluxgate-based Current Sensor for DC Bias Elimination in a Dual Active Bridge Converter",

abstract = "A concern with the isolation transformer in a dual active bridge (DAB) DC-DC converter is the DC bias in magnetization. This paper proposes a fluxgate-based current sensor to measure the DC component mixed with a large, high-frequency AC current. Compared with a commercial Hall effect current sensor, the proposed sensor significantly reduces measurement error. This paper presents the working principle and design considerations. A prototype is demonstrated for DC bias elimination control in a DAB converter.",

keywords = "Current measurement, Current transformers, Magnetic flux, Magnetic separation, Saturation magnetization, Transformer cores, Windings",

author = "Guanqun Qiu and Ran Li and Haolu Feng and Huaping Jiang and Teng Long and Andrew Forsyth and WeiHua Shao and Xu Hou",

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doi = "10.1109/TPEL.2021.3114354",

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T1 - A Fluxgate-based Current Sensor for DC Bias Elimination in a Dual Active Bridge Converter

AU - Qiu, Guanqun

AU - Li, Ran

AU - Feng, Haolu

AU - Jiang, Huaping

AU - Long, Teng

AU - Forsyth, Andrew

AU - Shao, WeiHua

AU - Hou, Xu

PY - 2021/9/21

Y1 - 2021/9/21

N2 - A concern with the isolation transformer in a dual active bridge (DAB) DC-DC converter is the DC bias in magnetization. This paper proposes a fluxgate-based current sensor to measure the DC component mixed with a large, high-frequency AC current. Compared with a commercial Hall effect current sensor, the proposed sensor significantly reduces measurement error. This paper presents the working principle and design considerations. A prototype is demonstrated for DC bias elimination control in a DAB converter.

AB - A concern with the isolation transformer in a dual active bridge (DAB) DC-DC converter is the DC bias in magnetization. This paper proposes a fluxgate-based current sensor to measure the DC component mixed with a large, high-frequency AC current. Compared with a commercial Hall effect current sensor, the proposed sensor significantly reduces measurement error. This paper presents the working principle and design considerations. A prototype is demonstrated for DC bias elimination control in a DAB converter.

KW - Current measurement

KW - Current transformers

KW - Magnetic flux

KW - Magnetic separation

KW - Saturation magnetization

KW - Transformer cores

KW - Windings

U2 - 10.1109/TPEL.2021.3114354

DO - 10.1109/TPEL.2021.3114354

M3 - Article

SN - 0885-8993

JO - IEEE Transactions on Power Electronics

JF - IEEE Transactions on Power Electronics

ER -

A Fluxgate-based Current Sensor for DC Bias Elimination in a Dual Active Bridge Converter

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Keywords

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