NDLI: Current control of grid connected inverter with LCL filter utilizing two degree-of-freedom control

Content Provider	IEEE Xplore Digital Library
Author	Jing Wang Monti, A.
Copyright Year	2013
Description	Author affiliation: Inst. for Autom. of Complex Power Syst., RWTH Aachen Univ., Aachen, Germany (Jing Wang; Monti, A.)
Abstract	The LCL-filtered current controlled voltage source inverter (VSI) is commonly applied for integrating distributed generation into the utility grid. Due to the topology of the LCL filter, multi-loop control strategies using different feedback control variables have been developed to fulfill the goal of generating the desired active and reactive power by controlling the output current of the VSI. According to the analysis of the closed-loop transfer function of the control system, the output current of the inverter is a function of commanded reference current input and disturbance input which indicates the imperfect control performances of the VSI especially at the presence of nonlinearities and unpredictable behaviors of the loads. In order to achieve a good compensation of the disturbance, in this work a two degree-of-freedom (DOF) controller, based on an inverse dynamic model is applied to the LCL filter. In particular, two control schemes for design of the DOF controller are proposed and compared in this paper. The two control schemes are compared both from an analytical point of view and in simulation. A real time testing approach finally completes the analysis.
Sponsorship	IEEE Ind. Appl. Soc.
Starting Page	967
Ending Page	972
File Size	386402
Page Count	6
File Format	PDF
ISBN	9781479914647
DOI	10.1109/ICRERA.2013.6749892
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-10-20
Publisher Place	Spain
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Current controlled VSI Regulators LCL filter Transfer functions Capacitance Inverters Multiloop control Feedforward neural networks Two DOF control Transient analysis Voltage control
Content Type	Text
Resource Type	Article

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