Demagnetization of Current Transformers Using PWM Burden

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00177016%3A_____%2F15%3A%230000837" target="_blank" >RIV/00177016:_____/15:#0000837 - isvavai.cz</a>
Alternative codes found
RIV/68407700:21230/15:00233860
Result on the web
<a href="http://dx.doi.org/10.1109/TMAG.2014.2356574" target="_blank" >http://dx.doi.org/10.1109/TMAG.2014.2356574</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1109/TMAG.2014.2356574" target="_blank" >10.1109/TMAG.2014.2356574</a>

Result language
angličtina
Original language name
Demagnetization of Current Transformers Using PWM Burden
Original language description
Current transformers (CTs) show large errors when they are magnetized by dc current. This error can be reduced after proper demagnetization. One of the methods to demagnetize the CT is to increase the core flux by increasing its burden. The burden shouldbe adjusted according to the measured ac current. In this paper, we show that pulsewidth modulation switchable resistor can be used as variable burden for this application. This method enables to restore the nominal precision of the heavily magnetized CT from 2.5% back to 0.2% without interruption of the CT operation.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
JB - Sensors, detecting elements, measurement and regulation
OECD FORD branch
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Project
<a href="/en/project/GAP102%2F12%2F2177" target="_blank" >GAP102/12/2177: Nanostructured soft magnetic materials for sensors</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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