Demagnetization of Current Transformers Using PWM Burden

Result code in IS VaVaI

RIV/00177016:_____/15:#0000837 - isvavai.cz

Alternative codes found

RIV/68407700:21230/15:00233860

Result on the web

http://dx.doi.org/10.1109/TMAG.2014.2356574

DOI - Digital Object Identifier

10.1109/TMAG.2014.2356574

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_x - 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

GAP102/12/2177: Nanostructured soft magnetic materials for sensors

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

Name of the periodical

IEEE TRANSACTIONS ON MAGNETICS

ISSN

0018-9464

e-ISSN

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Volume of the periodical

51

Issue of the periodical within the volume

1

Country of publishing house

US - UNITED STATES

Number of pages

4

Pages from-to

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UT code for WoS article

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EID of the result in the Scopus database

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