NDLI: A control approach for UPQC connected to weak supply point

Content Provider	IEEE Xplore Digital Library
Author	Axente, I. Basu, M. Conlon, M.F.
Copyright Year	2007
Description	Author affiliation: Dublin Inst. of Technol., Dublin (Axente, I.; Basu, M.; Conlon, M.F.)
Abstract	The shunt component of a UPQC (unified power quality conditioner) uses a VSI (voltage source inverter), which is typically connected to the grid through a series interface inductor. This inductor reduces the switching harmonics injected by the shunt VSI into the distribution network. However, if the UPQC is connected to a weak supply point, the load side voltage can become unacceptably distorted due to the switching frequencies in the supply current. In order to prevent the switching frequencies generated by the shunt inverter entering into the grid, LC or/and LCL filters are used for interfacing the shunt VSI with the distribution network. However, the incorporation of a second or higher order filter involves more complex control techniques to maintain system stability. In the case when an LCL filter is used for interfacing the shunt VSI with the grid, a hysteresis current controller would fail to track the reference if the current injected into the grid is tracked. But, the hysteresis based control strategy is very attractive from the practical implementation point of view, because of its simplicity. In this paper a control approach for avoiding the stability problem is proposed with application to the shunt component of the UPQC, incorporating an LCL filter, while using the hysteresis control technique. It is shown that if the inverter output current is tracked, rather than the current into the grid after the filter capacitor, stability is maintained using the hysteresis controller.
Starting Page	619
Ending Page	623
File Size	6861235
Page Count	5
File Format	PDF
ISBN	9781905593361
DOI	10.1109/UPEC.2007.4469019
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-09-04
Publisher Place	UK
Access Restriction	Subscribed
Rights Holder	UPEC
Subject Keyword	Stability Current supplies Inverters UPQC Shunt (electrical) Inductors Power harmonic filters active filters Switching frequency Power quality power quality Voltage power systems Hysteresis
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
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
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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