NDLI: Acceleration tests on large salient pole synchronous motors to determine inrush currents and torques methods-interpretation-problems

Content Provider	IEEE Xplore Digital Library
Author	Dymond, J.H. Mistry, B. Ong, R.
Copyright Year	2000
Description	Author affiliation: GE Ind. Syst., Peterborough, Ont., Canada (Dymond, J.H.)
Abstract	It is a very tedious and time consuming process to determine torque and current at locked rotor and at various slips during the acceleration test on a synchronous machine. Induction motors and synchronous machines behave similarly during acceleration except that the synchronous machine acceleration can include a pulsation torque. At locked rotor because of the salient poles, there will be conditions where the synchronous motor will have minimum torque at quadrature axis and maximum torque at direct axis. Since these machines do not have large numbers of rotor bars in the amortisseur winding like the induction motor has in the squirrel cage, their stall times tend to be a little shorter. Due to the shorter stall time and large starting torque, locked rotor torque and current are determined from acceleration tests conducted at reduced voltage rather than by tests at stand-still. The paper presents data showing that saturation effects impact both torque and current. It also shows that the voltage index which has to be applied to the torque and current measured at reduced voltage varies with speed and can be obtained from a series of acceleration tests.
Starting Page	315
Ending Page	321
File Size	622571
Page Count	7
File Format	PDF
ISBN	0780363345
ISSN	00903507
DOI	10.1109/PCICON.2000.882789
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2000-09-13
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Life estimation Testing Synchronous motors Torque Rotors Synchronous machines Voltage Induction motors Acceleration Bars
Content Type	Text
Resource Type	Article
Subject	Fuel Technology Energy Engineering and Power Technology

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