NDLI: Mitigation of Dynamic, Unbalanced, and Harmonic Voltage Disturbances Using Grid-Connected Inverters With <formula formulatype=inline><tex Notation=TeX>$LCL$</tex></formula> Filter

Content Provider	IEEE Xplore Digital Library
Author	Mohamed, Y.A.-R.I.
Copyright Year	1982
Abstract	This paper presents a robust and fast control strategy for load-voltage regulation in grid-connected inverters with inductor-capacitor-inductor (LCL) filter. The LCL filter complicates the power circuit dynamics, particularly when the uncertain nature of the grid background distortion and system parameters is considered. Furthermore, grid-voltage control in the presence of LCL filter dynamics yields dynamic coupling between current and voltage control loops. To overcome these difficulties, first, a robust high-bandwidth multiloop current controller is designed to decouple the current and voltage control dynamics and mitigate uncertain interactions between the LCL-filtered current-controlled inverter and grid. Second, a dual-sequence adaptive-gain variable-structure voltage control scheme is proposed for effective mitigation of fast, dynamic, unbalanced, and harmonic voltage disturbances. A theoretical analysis and comparative experimental results are presented to demonstrate the effectiveness of the proposed control scheme in supporting the voltage reliability.
Sponsorship	IEEE Industrial Electronics Society
Starting Page	3914
Ending Page	3924
Page Count	11
File Size	1578247
File Format	PDF
ISSN	02780046
Volume Number	58
Issue Number	9
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-09-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Voltage control Power harmonic filters Robustness Harmonic analysis Inverters Current control Distributed power generation voltage support distributed generation (DG) grid-connected inverters load-voltage regulation
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Electrical and Electronic Engineering Computer Science Applications

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