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2016 | 50 | 148-159
Article title

Design and implementation of programmable ultrafast circuit breaker with solid state relay

Content
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Languages of publication
EN
Abstracts
EN
The concept of electronic circuit breaker came into focus realizing that conventional circuit breakers such as MCBs take longer time to trip. Therefore, for sensitive loads it is very important to activate the tripping mechanism at the shortest possible time, preferably instantaneously. This project is demonstrates fast tripping mechanism as against the slow one like MCB. Electronic circuit breaker is based on the voltage drop across a series element proportional to the load current, typically a low value resistor. This voltage is sensed and rectified to DC which is and then compared with a preset voltage by a level comparator to generate an output that drives a relay through a MOSFET to trip the load. The unit is extremely fast and overcomes the drawback of the thermal type. It uses a microcontroller from 8051 family. The project was designed to shut down the power supply when it is overloaded. Conventional circuit breaker like MCB based is on thermal bimetal lever trip mechanism. It is very slow and the trip time is dependent upon the percentage of overload. This project senses the current passing through a series element and the corresponding voltage drop is compared against the preset voltage proportional to the current by a level comparator to generate an output for the load to trip.
Year
Volume
50
Pages
148-159
Physical description
Contributors
  • Electrical / Electronic Department, Osun State Polytechnic, Osun State, Nigeria
References
  • [1] Ben Damsky, Vitaly Gelman, John Frederick, “A solid state current limiter”,Article http://www.epa.gov/electricpower-sf6/documents/conf02_damsky_paper.pdf FREEDM systems center website, “http://www.freedm.ncsu.edu/index.php?s=1&p=6”. NGIPS technology development roadmap, Dec 2007.
  • [2] C. B. Henze, N. Mohan, C.P. Henze, R. Button, “A programmable solid state Current limiting circuit breaker for space applications”, IECON 2002.
  • [3] C. Meyer, S. Schroder, Rik W. De Doncker, “Solid state circuit breakers and Current limiters for medium voltage systems having distributed power systems”, IEEE transactions on power electronics, September 2004.
  • [4] Francesco Bittoni, Guido Fiesoli, Lorenzo Cincinelli, “Electronic Circuit Breaker”, Patent# Wo 2004/082091 A1, September 2004.
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  • [14] P. Jankowski, B. Dudojc, J. Mindykowski: “An optimeter designed to register ultra fast displacement”. TC4 IMEKO 2008 Symposium and IWADC, Florence, Italy, September 2008, Proceedings, CD-ROM.
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Document Type
article
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.psjd-b81b051a-ed49-4f17-a140-57d0f00956a4
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