NDLI: Wireless-Control Strategy for Parallel Operation of Distributed-Generation Inverters

Content Provider	IEEE Xplore Digital Library
Author	Guerrero, J.M. Matas, J. de Vicuna, L.G. Castilla, M. Miret, J.
Copyright Year	1982
Abstract	In this paper, a method for the parallel operation of inverters in an ac-distributed system is proposed. This paper explores the control of active and reactive power flow through the analysis of the output impedance of the inverters and its impact on the power sharing. As a result, adaptive virtual output impedance is proposed in order to achieve a proper reactive power sharing, regardless of the line-impedance unbalances. A soft-start operation is also included, avoiding the initial current peak, which results in a seamless hot-swap operation. Active power sharing is achieved by adjusting the frequency in load transient situations only, owing to which the proposed method obtains a constant steady-state frequency and amplitude. As opposed to the conventional droop method, the transient response can be modified by acting on the main control parameters. Linear and nonlinear loads can be properly shared due to the addition of a current harmonic loop in the control strategy. Experimental results are presented from a two-6-kVA parallel-connected inverter system, showing the feasibility of the proposed approach
Sponsorship	IEEE Industrial Electronics Society
Starting Page	1461
Ending Page	1470
Page Count	10
File Size	656906
File Format	PDF
ISSN	02780046
Volume Number	53
Issue Number	5
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-10-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Inverters Frequency Reactive power control Impedance Cogeneration Phase locked loops Communication system control Voltage control Reactive power Steady-state nonlinear loads Distributed generation (DG) droop control method microgrids
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Electrical and Electronic Engineering Computer Science Applications

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