Power Efficiency Improvement of Dual-Buck Inverter with SiC Diodes using Coupled Inductors

Min Kwon Yang; Yu Jin Kim; Woo Young Choi

doi:10.1109/WiPDA.2018.8569087

Power Efficiency Improvement of Dual-Buck Inverter with SiC Diodes using Coupled Inductors

Min Kwon Yang
, Yu Jin Kim
, Woo Young Choi

Division of Electronic Engineering

Jeonbuk National University

Research output: Contribution to conference › Conference paper › peer-review

3 Scopus citations

Abstract

The dual-buck inverter has been widely used for single-phase applications such as grid-tied renewable energy systems and uninterruptible power supplies. Recently, the silicon carbide (SiC) diodes have been used for the freewheeling diodes of the dual-buck inverter due to their no reverse recovery characteristic. However, in a practical design, a current overshoot exists owing to the energy swing between the stray inductor within the inverter circuit and the parasitic capacitor of the SiC diode. Such a current overshoot increases switching power losses, reducing the power efficiency of the inverter. Thus, this paper suggests a dual-buck inverter, which can deal with the current overshoot problem of SiC diodes by using coupled inductors. The proposed inverter reduces switching power losses by alleviating the current overshoots of diodes. Experimental results based on a 1.0 kW prototype system shows that the proposed inverter has improved the power efficiency, achieving a higher power efficiency compared to the conventional inverter.

Original language	English
Title of host publication	2018 IEEE 6th Workshop on Wide Bandgap Power Devices and Applications, WiPDA 2018
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	56-59
Number of pages	4
ISBN (Electronic)	9781538659090
DOIs	https://doi.org/10.1109/WiPDA.2018.8569087
State	Published - 2018.12.7
Event	6th Annual IEEE Workshop on Wide Bandgap Power Devices and Applications, WiPDA 2018 - Atlanta, United States Duration: 2018.10.31 → 2018.11.2

Publication series

Name	2018 IEEE 6th Workshop on Wide Bandgap Power Devices and Applications, WiPDA 2018

Conference

Conference	6th Annual IEEE Workshop on Wide Bandgap Power Devices and Applications, WiPDA 2018
Country/Territory	United States
City	Atlanta
Period	18.10.31 → 18.11.2

UN SDGs

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

SDG 7 Affordable and Clean Energy

Keywords

current overshoot
dual buck inverter
silicon carbide diode
switching loss

Quacquarelli Symonds(QS) Subject Topics

Materials Science
Computer Science & Information Systems
Engineering - Electrical & Electronic
Engineering - Petroleum
Physics & Astronomy

Access to Document

10.1109/WiPDA.2018.8569087

Cite this

Yang, M. K., Kim, Y. J., & Choi, W. Y. (2018). Power Efficiency Improvement of Dual-Buck Inverter with SiC Diodes using Coupled Inductors. In 2018 IEEE 6th Workshop on Wide Bandgap Power Devices and Applications, WiPDA 2018 (pp. 56-59). Article 8569087 (2018 IEEE 6th Workshop on Wide Bandgap Power Devices and Applications, WiPDA 2018). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/WiPDA.2018.8569087

Yang, Min Kwon ; Kim, Yu Jin ; Choi, Woo Young. / Power Efficiency Improvement of Dual-Buck Inverter with SiC Diodes using Coupled Inductors. 2018 IEEE 6th Workshop on Wide Bandgap Power Devices and Applications, WiPDA 2018. Institute of Electrical and Electronics Engineers Inc., 2018. pp. 56-59 (2018 IEEE 6th Workshop on Wide Bandgap Power Devices and Applications, WiPDA 2018).

@inproceedings{0113ca7c064545208547db2107713984,

title = "Power Efficiency Improvement of Dual-Buck Inverter with SiC Diodes using Coupled Inductors",

abstract = "The dual-buck inverter has been widely used for single-phase applications such as grid-tied renewable energy systems and uninterruptible power supplies. Recently, the silicon carbide (SiC) diodes have been used for the freewheeling diodes of the dual-buck inverter due to their no reverse recovery characteristic. However, in a practical design, a current overshoot exists owing to the energy swing between the stray inductor within the inverter circuit and the parasitic capacitor of the SiC diode. Such a current overshoot increases switching power losses, reducing the power efficiency of the inverter. Thus, this paper suggests a dual-buck inverter, which can deal with the current overshoot problem of SiC diodes by using coupled inductors. The proposed inverter reduces switching power losses by alleviating the current overshoots of diodes. Experimental results based on a 1.0 kW prototype system shows that the proposed inverter has improved the power efficiency, achieving a higher power efficiency compared to the conventional inverter.",

keywords = "current overshoot, dual buck inverter, silicon carbide diode, switching loss",

author = "Yang, \{Min Kwon\} and Kim, \{Yu Jin\} and Choi, \{Woo Young\}",

note = "Publisher Copyright: {\textcopyright} 2018 IEEE.; 6th Annual IEEE Workshop on Wide Bandgap Power Devices and Applications, WiPDA 2018 ; Conference date: 31-10-2018 Through 02-11-2018",

year = "2018",

month = dec,

day = "7",

doi = "10.1109/WiPDA.2018.8569087",

language = "English",

series = "2018 IEEE 6th Workshop on Wide Bandgap Power Devices and Applications, WiPDA 2018",

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

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}

Yang, MK, Kim, YJ & Choi, WY 2018, Power Efficiency Improvement of Dual-Buck Inverter with SiC Diodes using Coupled Inductors. in 2018 IEEE 6th Workshop on Wide Bandgap Power Devices and Applications, WiPDA 2018., 8569087, 2018 IEEE 6th Workshop on Wide Bandgap Power Devices and Applications, WiPDA 2018, Institute of Electrical and Electronics Engineers Inc., pp. 56-59, 6th Annual IEEE Workshop on Wide Bandgap Power Devices and Applications, WiPDA 2018, Atlanta, United States, 18.10.31. https://doi.org/10.1109/WiPDA.2018.8569087

Power Efficiency Improvement of Dual-Buck Inverter with SiC Diodes using Coupled Inductors. / Yang, Min Kwon; Kim, Yu Jin; Choi, Woo Young.
2018 IEEE 6th Workshop on Wide Bandgap Power Devices and Applications, WiPDA 2018. Institute of Electrical and Electronics Engineers Inc., 2018. p. 56-59 8569087 (2018 IEEE 6th Workshop on Wide Bandgap Power Devices and Applications, WiPDA 2018).

Research output: Contribution to conference › Conference paper › peer-review

TY - GEN

T1 - Power Efficiency Improvement of Dual-Buck Inverter with SiC Diodes using Coupled Inductors

AU - Yang, Min Kwon

AU - Kim, Yu Jin

AU - Choi, Woo Young

PY - 2018/12/7

Y1 - 2018/12/7

N2 - The dual-buck inverter has been widely used for single-phase applications such as grid-tied renewable energy systems and uninterruptible power supplies. Recently, the silicon carbide (SiC) diodes have been used for the freewheeling diodes of the dual-buck inverter due to their no reverse recovery characteristic. However, in a practical design, a current overshoot exists owing to the energy swing between the stray inductor within the inverter circuit and the parasitic capacitor of the SiC diode. Such a current overshoot increases switching power losses, reducing the power efficiency of the inverter. Thus, this paper suggests a dual-buck inverter, which can deal with the current overshoot problem of SiC diodes by using coupled inductors. The proposed inverter reduces switching power losses by alleviating the current overshoots of diodes. Experimental results based on a 1.0 kW prototype system shows that the proposed inverter has improved the power efficiency, achieving a higher power efficiency compared to the conventional inverter.

AB - The dual-buck inverter has been widely used for single-phase applications such as grid-tied renewable energy systems and uninterruptible power supplies. Recently, the silicon carbide (SiC) diodes have been used for the freewheeling diodes of the dual-buck inverter due to their no reverse recovery characteristic. However, in a practical design, a current overshoot exists owing to the energy swing between the stray inductor within the inverter circuit and the parasitic capacitor of the SiC diode. Such a current overshoot increases switching power losses, reducing the power efficiency of the inverter. Thus, this paper suggests a dual-buck inverter, which can deal with the current overshoot problem of SiC diodes by using coupled inductors. The proposed inverter reduces switching power losses by alleviating the current overshoots of diodes. Experimental results based on a 1.0 kW prototype system shows that the proposed inverter has improved the power efficiency, achieving a higher power efficiency compared to the conventional inverter.

KW - current overshoot

KW - dual buck inverter

KW - silicon carbide diode

KW - switching loss

UR - https://www.scopus.com/pages/publications/85060225760

U2 - 10.1109/WiPDA.2018.8569087

DO - 10.1109/WiPDA.2018.8569087

M3 - Conference paper

AN - SCOPUS:85060225760

T3 - 2018 IEEE 6th Workshop on Wide Bandgap Power Devices and Applications, WiPDA 2018

SP - 56

EP - 59

BT - 2018 IEEE 6th Workshop on Wide Bandgap Power Devices and Applications, WiPDA 2018

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 6th Annual IEEE Workshop on Wide Bandgap Power Devices and Applications, WiPDA 2018

Y2 - 31 October 2018 through 2 November 2018

ER -

Yang MK, Kim YJ, Choi WY. Power Efficiency Improvement of Dual-Buck Inverter with SiC Diodes using Coupled Inductors. In 2018 IEEE 6th Workshop on Wide Bandgap Power Devices and Applications, WiPDA 2018. Institute of Electrical and Electronics Engineers Inc. 2018. p. 56-59. 8569087. (2018 IEEE 6th Workshop on Wide Bandgap Power Devices and Applications, WiPDA 2018). doi: 10.1109/WiPDA.2018.8569087

Power Efficiency Improvement of Dual-Buck Inverter with SiC Diodes using Coupled Inductors

Abstract

Publication series

Conference

UN SDGs

Keywords

Quacquarelli Symonds(QS) Subject Topics

Access to Document

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