NDLI: A new McMurray-type inverter with asymmetric SCR's

Content Provider	IEEE Xplore Digital Library
Author	Zach, F.C. Kaiser, K.H. Faschang, L.J.
Copyright Year	1986
Abstract	The standard, simple McMurray inverter is improved in three steps. The first step, adding recharging and energy feedback pulses, keeps the inverter operating satisfactorily at low loads and also limits overcharging of the commutation capacitor. The second step involves replacing the standard LC ringing circuit (for commutation) by a long line which has to be approximated by concentrated elements. This changes the sinusoidal commutation current pulse to a rectangular shape and eliminates wasted time due to the rise of the sine wave in the standard circuit. The system therefore needs only 70% of the commutation time required for the standard system, so that about 1.4 times higher pulse frequencies can be realized. The third step, using newly developed asymmetric silicon-controlled rectifiers (ASCRs), is made possible by the structure of the improved inverter, where diodes are used in antiparallel to the main thyristors. The ASCRs require about 1/3 of the turn-off time of conventional thyristors. Altogether, inverter output frequencies of up to 1.4*3=4.2 times the frequencies achievable with conventional means were obtained.<>
Sponsorship	IEEE Power Electronics Society
Starting Page	272
Ending Page	278
Page Count	7
File Size	563985
File Format	PDF
ISSN	08858993
Volume Number	4
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1989-04-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Frequency Thyristors Feedback Pulse inverters Capacitors Modules (abstract algebra) Pulse circuits Pulse shaping methods Shape Rectifiers
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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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
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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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