NDLI: Weighted least square estimation algorithm with software phase-locked loop for voltage sag compensation by SMES

Content Provider	IEEE Xplore Digital Library
Author	Xiaoguang Zhu Xiaohua Jiang
Copyright Year	2004
Description	Author affiliation: Dept. of Electr. Eng., Tsinghua Univ., Beijing, China (Xiaoguang Zhu; Xiaohua Jiang)
Abstract	A superconducting magnetic energy storage (SMES) system is developed to protect a critical load from momentary voltage sags. This system is composed of a 0.3 MJ SMES coil, a 150 KVA IGBT-based current source inverter and a phase-shift inductor. In order to compensate the load voltage effectively whenever a source voltage sag happens, it is crucial for the signal processing algorithm to extract the fundamental components from the sample signals quickly, precisely and stably. In this paper, an estimation algorithm based on the weighted least square principle is developed to detect the positive- and negative-sequence fundamental components from the measured AC voltages and currents. A software phase-locked loop (SPLL) is applied to track the positive-sequence component of the source voltage. Simulations and experiments are carried out to demonstrate the algorithms. The results are presented.
Sponsorship	IEEE Power Electon. Soc
Starting Page	2034
Ending Page	2038
File Size	296952
Page Count	5
File Format	PDF
ISBN	0780383990
ISSN	02759306
DOI	10.1109/PESC.2004.1355430
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-06-20
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Voltage fluctuations Least squares approximation Software algorithms Phase locked loops Samarium Signal processing algorithms Superconducting magnetic energy storage Protection Power quality Superconducting coils
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