NDLI: A control strategy for islanded operation of a Voltage Source Converter (VSC) based distributed resource unit under unbalanced conditions

Content Provider	IEEE Xplore Digital Library
Author	Merritt, N.R. Chakraborty, C. Bajpai, P.
Copyright Year	2015
Abstract	This paper proposes a new control strategy for the Voltage Source Converter based Distributed Generation units operating in a Microgrid under unbalanced load conditions. The objective of the proposed control strategy is to control the positive sequence components and the negative sequence components of the Voltage at the Point of Common Coupling (PCC) in dq - frame, so that the Voltage will be controlled to the reference command rapidly. The load in a distribution system is usually unbalanced and highly unpredictable. The main objective behind controlling the negative sequence components of the PCC Voltage is to make sure that the Voltage at the PCC is balanced always irrespective of the unbalance in this load. Therefore the negative sequence components at the load will be minimized to a great extent, such that the Voltage supplied to the loads is nearly balanced. The proposed controller employs feed forward compensation in order to compensate for the effects of the cross coupling terms and the dynamics of the load, thereby the control structure becomes completely decoupled. The effectiveness of the proposed control structure has been implemented on the detailed switched model representing the Distributed Generation unit modelled in PSCAD/EMTDC.
Starting Page	1550
Ending Page	1555
File Size	2160650
Page Count	6
File Format	PDF
e-ISBN	9781479966493
DOI	10.1109/INDIN.2015.7281964
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-07-22
Publisher Place	UK
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Current control Microgrid Microgrids Switches Mathematical model Power conversion Voltage control Negative Sequence Voltage Control Islanded mode of operation Unbalanced load
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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