A Modified LLCL-filter with the Reduced Conducted EMI Noise

Weimin Wu; Yunjie Sun; Zhe Lin; Min Huang; Frede Blaabjerg; Henry Shu-Hung Chung

doi:10.1109/EPE.2013.6634408

A Modified LLCL-filter with the Reduced Conducted EMI Noise

Weimin Wu
, Yunjie Sun
, Zhe Lin
, Min Huang
, Frede Blaabjerg
, Henry Shu-Hung Chung

Department of Electrical Engineering

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

7 Citations (Scopus)

Abstract

For a transformerless grid-tied converter using Pulse Width Modulation (PWM), the harmonics of grid-injected current, the leakage current and the Electromagnetic Interference (EMI) noise are three important issues during design of the output filter. In this paper, the Common-Mode (CM) and the Differential-Mode (DM) EMI noises are investigated for the LCL- and LLCL-filters based single-phase full-bridge grid-tied inverter. Based on this, a modified LLCL-filter topology is proposed to provide enough attenuation on the conducted EMI noise as well as to reduce the DC-side leakage current. The parameter design method of the filter is also developed. The comparative analysis and discussion on four filter cases (the conventional LCL-filter, the conventional LLCL-filter, the modified LCL-filter, and the modified LLCL-filter) are carried out and verified through simulations and experiments on a 0.5 kW, 110 V / 50 Hz single-phase full-bridge grid-tied inverter prototype.

Original language	English
Title of host publication	2013 15th European Conference on Power Electronics and Applications, EPE 2013
DOIs	https://doi.org/10.1109/EPE.2013.6634408
Publication status	Published - Sept 2013
Event	2013 15th European Conference on Power Electronics and Applications (EPE 2013) - Lille Grand Palais, Lille, France Duration: 2 Sept 2013 → 6 Sept 2013

Conference

Conference	2013 15th European Conference on Power Electronics and Applications (EPE 2013)
Place	France
City	Lille
Period	2/09/13 → 6/09/13

Research Keywords

Common-mode
DC-side leakage current
Differential-mode
EMI
LCL-filter
LLCL-filter
Single-phase Grid-tied inverter

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@inproceedings{baa99781ebbd4fc7a46f7ef87067408d,

title = "A Modified LLCL-filter with the Reduced Conducted EMI Noise",

abstract = "For a transformerless grid-tied converter using Pulse Width Modulation (PWM), the harmonics of grid-injected current, the leakage current and the Electromagnetic Interference (EMI) noise are three important issues during design of the output filter. In this paper, the Common-Mode (CM) and the Differential-Mode (DM) EMI noises are investigated for the LCL- and LLCL-filters based single-phase full-bridge grid-tied inverter. Based on this, a modified LLCL-filter topology is proposed to provide enough attenuation on the conducted EMI noise as well as to reduce the DC-side leakage current. The parameter design method of the filter is also developed. The comparative analysis and discussion on four filter cases (the conventional LCL-filter, the conventional LLCL-filter, the modified LCL-filter, and the modified LLCL-filter) are carried out and verified through simulations and experiments on a 0.5 kW, 110 V / 50 Hz single-phase full-bridge grid-tied inverter prototype.",

keywords = "Common-mode, DC-side leakage current, Differential-mode, EMI, LCL-filter, LLCL-filter, Single-phase Grid-tied inverter",

author = "Weimin Wu and Yunjie Sun and Zhe Lin and Min Huang and Frede Blaabjerg and Chung, \{Henry Shu-Hung\}",

year = "2013",

month = sep,

doi = "10.1109/EPE.2013.6634408",

language = "English",

isbn = "9781479901166",

booktitle = "2013 15th European Conference on Power Electronics and Applications, EPE 2013",

note = "2013 15th European Conference on Power Electronics and Applications (EPE 2013) ; Conference date: 02-09-2013 Through 06-09-2013",

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TY - GEN

T1 - A Modified LLCL-filter with the Reduced Conducted EMI Noise

AU - Wu, Weimin

AU - Sun, Yunjie

AU - Lin, Zhe

AU - Huang, Min

AU - Blaabjerg, Frede

AU - Chung, Henry Shu-Hung

PY - 2013/9

Y1 - 2013/9

N2 - For a transformerless grid-tied converter using Pulse Width Modulation (PWM), the harmonics of grid-injected current, the leakage current and the Electromagnetic Interference (EMI) noise are three important issues during design of the output filter. In this paper, the Common-Mode (CM) and the Differential-Mode (DM) EMI noises are investigated for the LCL- and LLCL-filters based single-phase full-bridge grid-tied inverter. Based on this, a modified LLCL-filter topology is proposed to provide enough attenuation on the conducted EMI noise as well as to reduce the DC-side leakage current. The parameter design method of the filter is also developed. The comparative analysis and discussion on four filter cases (the conventional LCL-filter, the conventional LLCL-filter, the modified LCL-filter, and the modified LLCL-filter) are carried out and verified through simulations and experiments on a 0.5 kW, 110 V / 50 Hz single-phase full-bridge grid-tied inverter prototype.

AB - For a transformerless grid-tied converter using Pulse Width Modulation (PWM), the harmonics of grid-injected current, the leakage current and the Electromagnetic Interference (EMI) noise are three important issues during design of the output filter. In this paper, the Common-Mode (CM) and the Differential-Mode (DM) EMI noises are investigated for the LCL- and LLCL-filters based single-phase full-bridge grid-tied inverter. Based on this, a modified LLCL-filter topology is proposed to provide enough attenuation on the conducted EMI noise as well as to reduce the DC-side leakage current. The parameter design method of the filter is also developed. The comparative analysis and discussion on four filter cases (the conventional LCL-filter, the conventional LLCL-filter, the modified LCL-filter, and the modified LLCL-filter) are carried out and verified through simulations and experiments on a 0.5 kW, 110 V / 50 Hz single-phase full-bridge grid-tied inverter prototype.

KW - Common-mode

KW - DC-side leakage current

KW - Differential-mode

KW - EMI

KW - LCL-filter

KW - LLCL-filter

KW - Single-phase Grid-tied inverter

UR - https://www.scopus.com/pages/publications/84890175665

UR - https://www.scopus.com/pages/publications/84890175665#tab=impact

U2 - 10.1109/EPE.2013.6634408

DO - 10.1109/EPE.2013.6634408

M3 - RGC 32 - Refereed conference paper (with host publication)

SN - 9781479901166

BT - 2013 15th European Conference on Power Electronics and Applications, EPE 2013

T2 - 2013 15th European Conference on Power Electronics and Applications (EPE 2013)

Y2 - 2 September 2013 through 6 September 2013

ER -

A Modified LLCL-filter with the Reduced Conducted EMI Noise

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