Planar Nonlinear Coupled Inductors for Improving Light Load Efficiency of DC/DC Converters

Laili Wang; Fei Li; Kangping Wang

doi:10.1109/ECCE.2018.8558210

Planar Nonlinear Coupled Inductors for Improving Light Load Efficiency of DC/DC Converters

School of Electrical Engineering

Xi'an Jiaotong University

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

5 Scopus citations

Abstract

This paper presents a planar nonlinear coupled inductor for improving light load efficiency of DC/DC converters. The nonlinear coupled inductor features higher self-inductance value and lower coupling coefficient at light load. Three layers, formed by magnetic materials with two kinds of permeability, are used to make the nonlinear coupled inductor. The nonlinearity is controlled by the permeability and thickness of the high-permeability center plate. Finite element analysis (FEA) is employed to design the nonlinear coupled inductor by sweeping the conductor width and middle layer thickness. The coupled inductor structure as well as its influence on the inductance value is also analyzed in this paper. Two prototypes with two permeability distribution are made to test the performances and they achieve high light load efficiency. Compared with the conventional constant coupling coefficient inductor, the nonlinear coupled inductor has higher efficiency at light load.

Original language	English
Title of host publication	2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	7039-7044
Number of pages	6
ISBN (Electronic)	9781479973118
DOIs	https://doi.org/10.1109/ECCE.2018.8558210
State	Published - 3 Dec 2018
Event	10th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2018 - Portland, United States Duration: 23 Sep 2018 → 27 Sep 2018

Publication series

Name	2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018

Conference

Conference	10th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2018
Country/Territory	United States
City	Portland
Period	23/09/18 → 27/09/18

UN SDGs

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

SDG 7 Affordable and Clean Energy

Keywords

LTCC
Light load efficiency improvement
Nonlinear coupled inductor
Two permeability magnetic materials

Access to Document

10.1109/ECCE.2018.8558210

Cite this

Wang, L., Li, F., & Wang, K. (2018). Planar Nonlinear Coupled Inductors for Improving Light Load Efficiency of DC/DC Converters. In 2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018 (pp. 7039-7044). Article 8558210 (2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ECCE.2018.8558210

@inproceedings{47e3fb389a07427a95fb4b8086954890,

title = "Planar Nonlinear Coupled Inductors for Improving Light Load Efficiency of DC/DC Converters",

abstract = "This paper presents a planar nonlinear coupled inductor for improving light load efficiency of DC/DC converters. The nonlinear coupled inductor features higher self-inductance value and lower coupling coefficient at light load. Three layers, formed by magnetic materials with two kinds of permeability, are used to make the nonlinear coupled inductor. The nonlinearity is controlled by the permeability and thickness of the high-permeability center plate. Finite element analysis (FEA) is employed to design the nonlinear coupled inductor by sweeping the conductor width and middle layer thickness. The coupled inductor structure as well as its influence on the inductance value is also analyzed in this paper. Two prototypes with two permeability distribution are made to test the performances and they achieve high light load efficiency. Compared with the conventional constant coupling coefficient inductor, the nonlinear coupled inductor has higher efficiency at light load.",

keywords = "LTCC, Light load efficiency improvement, Nonlinear coupled inductor, Two permeability magnetic materials",

author = "Laili Wang and Fei Li and Kangping Wang",

note = "Publisher Copyright: {\textcopyright} 2018 IEEE.; 10th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2018 ; Conference date: 23-09-2018 Through 27-09-2018",

year = "2018",

month = dec,

day = "3",

doi = "10.1109/ECCE.2018.8558210",

language = "英语",

series = "2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018",

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

pages = "7039--7044",

booktitle = "2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018",

}

Wang, L, Li, F & Wang, K 2018, Planar Nonlinear Coupled Inductors for Improving Light Load Efficiency of DC/DC Converters. in 2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018., 8558210, 2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018, Institute of Electrical and Electronics Engineers Inc., pp. 7039-7044, 10th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2018, Portland, United States, 23/09/18. https://doi.org/10.1109/ECCE.2018.8558210

Planar Nonlinear Coupled Inductors for Improving Light Load Efficiency of DC/DC Converters. / Wang, Laili; Li, Fei; Wang, Kangping.
2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018. Institute of Electrical and Electronics Engineers Inc., 2018. p. 7039-7044 8558210 (2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018).

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

TY - GEN

T1 - Planar Nonlinear Coupled Inductors for Improving Light Load Efficiency of DC/DC Converters

AU - Wang, Laili

AU - Li, Fei

AU - Wang, Kangping

PY - 2018/12/3

Y1 - 2018/12/3

N2 - This paper presents a planar nonlinear coupled inductor for improving light load efficiency of DC/DC converters. The nonlinear coupled inductor features higher self-inductance value and lower coupling coefficient at light load. Three layers, formed by magnetic materials with two kinds of permeability, are used to make the nonlinear coupled inductor. The nonlinearity is controlled by the permeability and thickness of the high-permeability center plate. Finite element analysis (FEA) is employed to design the nonlinear coupled inductor by sweeping the conductor width and middle layer thickness. The coupled inductor structure as well as its influence on the inductance value is also analyzed in this paper. Two prototypes with two permeability distribution are made to test the performances and they achieve high light load efficiency. Compared with the conventional constant coupling coefficient inductor, the nonlinear coupled inductor has higher efficiency at light load.

AB - This paper presents a planar nonlinear coupled inductor for improving light load efficiency of DC/DC converters. The nonlinear coupled inductor features higher self-inductance value and lower coupling coefficient at light load. Three layers, formed by magnetic materials with two kinds of permeability, are used to make the nonlinear coupled inductor. The nonlinearity is controlled by the permeability and thickness of the high-permeability center plate. Finite element analysis (FEA) is employed to design the nonlinear coupled inductor by sweeping the conductor width and middle layer thickness. The coupled inductor structure as well as its influence on the inductance value is also analyzed in this paper. Two prototypes with two permeability distribution are made to test the performances and they achieve high light load efficiency. Compared with the conventional constant coupling coefficient inductor, the nonlinear coupled inductor has higher efficiency at light load.

KW - LTCC

KW - Light load efficiency improvement

KW - Nonlinear coupled inductor

KW - Two permeability magnetic materials

UR - https://www.scopus.com/pages/publications/85060286229

U2 - 10.1109/ECCE.2018.8558210

DO - 10.1109/ECCE.2018.8558210

M3 - 会议稿件

AN - SCOPUS:85060286229

T3 - 2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018

SP - 7039

EP - 7044

BT - 2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 10th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2018

Y2 - 23 September 2018 through 27 September 2018

ER -

Planar Nonlinear Coupled Inductors for Improving Light Load Efficiency of DC/DC Converters

Abstract

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UN SDGs

Keywords

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