A Simple Differential Mode EMI Suppressor for the LLCL-Filter-Based Single-Phase Grid-Tied Transformerless Inverter

Junhao Ji; Weimin Wu; Yuanbin He; Zhe Lin; Frede Blaabjerg; Henry Shu-Hung Chung

doi:10.1109/TIE.2014.2385666

Author(s)

Junhao Ji
Weimin Wu
Yuanbin He
Zhe Lin
Frede Blaabjerg

Related Research Unit(s)

Centre for Smart Energy Conversion and Utilization Research

Detail(s)

Original language	English
Article number	6998031
Pages (from-to)	4141-4147
Journal / Publication	IEEE Transactions on Industrial Electronics
Volume	62
Issue number	7
Online published	24 Dec 2014
Publication status	Published - Jul 2015

Link(s)

DOI	DOI https://doi.org/10.1109/TIE.2014.2385666 Final Published version
	Check@CityULib
Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-84930225776&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(4f8af727-6fee-4a8d-9ad3-92bc5befbe98).html

Abstract

The single-phase power converter topologies evolving of photovoltaic applications are still including passive filters, like the LCL- or LLCL-filter. Compared with the LCL-filter, the total inductance of the LLCL-filter can be reduced a lot. However, due to the resonant inductor in series with the bypass capacitor, the differential mode (DM) electromagnetic interference (EMI) noise attenuation of an LLCL-filter-based grid-tied inverter declines. Conventionally, a capacitor was inserted in parallel with the LC resonant circuit branch of the LLCL-filter to suppress the DM EMI noise. In order to achieve a small value of capacitor as well as to minimize the additional reactive power, a novel simple DM EMI suppressor for the LLCL-filter-based system is proposed. The characters of two kinds of DM EMI suppressor are analyzed and compared in detail. Simulations and experiments on a 0.5-kW 110-V/50-Hz single-phase grid-tied inverter prototype are accomplished to confirm the analysis.

Research Area(s)

Differential mode (DM), electromagnetic interference (EMI) noise, grid-tied, inverter, LCL-filter, LLCL-filter, suppressor

Citation Format(s)

[ RIS ] [ BibTeX ]

A Simple Differential Mode EMI Suppressor for the LLCL-Filter-Based Single-Phase Grid-Tied Transformerless Inverter. / Ji, Junhao; Wu, Weimin; He, Yuanbin et al.
In: IEEE Transactions on Industrial Electronics, Vol. 62, No. 7, 6998031, 07.2015, p. 4141-4147.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review

Ji, J, Wu, W, He, Y, Lin, Z, Blaabjerg, F & Chung, HS-H 2015, 'A Simple Differential Mode EMI Suppressor for the LLCL-Filter-Based Single-Phase Grid-Tied Transformerless Inverter', IEEE Transactions on Industrial Electronics, vol. 62, no. 7, 6998031, pp. 4141-4147. https://doi.org/10.1109/TIE.2014.2385666

Ji, J., Wu, W., He, Y., Lin, Z., Blaabjerg, F., & Chung, H. S-H. (2015). A Simple Differential Mode EMI Suppressor for the LLCL-Filter-Based Single-Phase Grid-Tied Transformerless Inverter. IEEE Transactions on Industrial Electronics, 62(7), 4141-4147. [6998031]. https://doi.org/10.1109/TIE.2014.2385666

Ji J, Wu W, He Y, Lin Z, Blaabjerg F, Chung HS-H. A Simple Differential Mode EMI Suppressor for the LLCL-Filter-Based Single-Phase Grid-Tied Transformerless Inverter. IEEE Transactions on Industrial Electronics. 2015 Jul;62(7):4141-4147. 6998031. Epub 2014 Dec 24. doi: 10.1109/TIE.2014.2385666

Ji, Junhao ; Wu, Weimin ; He, Yuanbin et al. / A Simple Differential Mode EMI Suppressor for the LLCL-Filter-Based Single-Phase Grid-Tied Transformerless Inverter. In: IEEE Transactions on Industrial Electronics. 2015 ; Vol. 62, No. 7. pp. 4141-4147.