NDLI: A New <formula formulatype=inline><tex Notation=TeX>$LCL$</tex></formula>-Filter With In-Series Parallel Resonant Circuit for Single-Phase Grid-Tied Inverter

Content Provider	IEEE Xplore Digital Library
Author	Weimin Wu Yunjie Sun Zhe Lin Tianhao Tang Blaabjerg, F. Chung, H.S.-H.
Copyright Year	1982
Abstract	When designing a higher order output power filter for a transformerless grid-tied converter using pulsewidth modulation (PWM), the requirements on the leakage current, the electromagnetic interference (EMI) noise, and the harmonics of the grid-injected current should be addressed. For an LCL-filter-based single-phase grid-tied full-bridge inverter system, it is possible to decrease the total inductance as well as the size and the cost, if the harmonic currents around the switching frequency can be fully suppressed. In this paper, the grid-injected current harmonics and the conducted EMI noise are investigated for the conventional LCL-filter-based system. Based on this, a modified LCL-filter topology using an extra parallel LrCr resonant circuit is proposed to reduce the total inductance value, without increasing the capacitive reactive power. The validity is verified through the experiments on a 500-W 110-V/50-Hz prototype.
Sponsorship	IEEE Industrial Electronics Society
Starting Page	4640
Ending Page	4644
Page Count	5
File Size	708882
File Format	PDF
ISSN	02780046
Volume Number	61
Issue Number	9
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Harmonic analysis Electromagnetic interference Inverters Noise Power harmonic filters Switching frequency stiff grid Common-mode noise differential-mode noise electromagnetic interference (EMI) harmonic current $LCL$ -filter parallel $LC$ resonant circuit
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Electrical and Electronic Engineering Computer Science Applications

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