NDLI: An alternative low-cost current-sensing scheme for high-current power electronics circuits

Content Provider	IEEE Xplore Digital Library
Author	Radun, A. Rulison, J.
Copyright Year	1990
Description	Author affiliation: GE Corp. Res. & Dev., Schenectady, NY, USA (Radun, A.; Rulison, J.)
Abstract	A lightweight, low-cost current sensor for application in high-current, high-frequency power inverters and power converters is described. The current sensor consists of three elements. The first is a Rogowski coil, also known as a Maxwell worm, which is a nonmagnetic toroid wound like an inductor. The output voltage at the open terminals of the winding is proportional to the time derivative of the current flowing in a conductor passing through the toroid. The second element of the sensor is an op-amp integrator, which has as its input the output of the Rogowski coil. The third element of the sensor is a circuit to reset the integrator to zero when the current through the Rogowski coil is zero, to prevent the integration of the op-amp's offset voltages and biases from accumulating. For the case of a semiconductor switch, the current through the switch is zero when the switch is gated off.<>
Starting Page	619
Ending Page	625
File Size	603922
Page Count	7
File Format	PDF
ISBN	0879425539
DOI	10.1109/IAS.1990.152250
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1990-10-07
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Coils Operational amplifiers Circuits Switches Voltage Sensor phenomena and characterization Wounds Conductors Inverters Inductors
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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