G - Physics – 01 – R
Patent
G - Physics
01
R
G01R 33/02 (2006.01) H01H 9/56 (2006.01)
Patent
CA 2666733
[PROBLEMS] To provide a magnetic flux measuring apparatus of a stationary induction electric device and a magnetic flux measuring method thereof wherein the magnetic flux can be precisely measured without being affected by a DC offset component superimposed in a measuring system and wherein the magnetic flux can be constantly measured without limiting the magnetic flux measuring time interval. [MEANS FOR SOLVING PROBLEMS] In a magnetic flux measuring method, which uses the voltage waveform of a stationary induction electric device (2) to measure the magnetic flux of the stationary induction electric device (2), the voltage waveform (121) of the stationary induction electric device (2) is inputted to a negative feedback amplifying means (14), in which a feedback circuit is configured by use of a lowpass filter, and the outputs of the negative feedback amplifying means (14) are integrated by a integrating means (15), thereby determining the magnetic flux (151) of the stationary induction electric device (2).
L'invention concerne un appareil de mesure de flux magnétique d'un dispositif électrique à induction stationnaire, ainsi que son procédé de mesure de flux magnétique, permettant de mesurer avec précision un flux magnétique indépendamment d'un décalage du niveau continu superposé dans un système de mesure, et de mesurer constamment ce flux magnétique sans limiter l'intervalle de mesure. Le procédé de mesure de flux magnétique utilise une onde de tension d'un dispositif électrique à induction stationnaire (2) pour en mesurer le flux magnétique, et comprend les étapes consistant à appliquer l'onde de tension (121) du dispositif électrique à induction stationnaire (2) à un moyen d'amplification à contre-réaction (14) incorporant un circuit de réaction utilisant un filtre passe-bas ; et à intégrer par un moyen d'intégration (15) les sorties du moyen d'amplification à contre-réaction (14) dans le but de déterminer le flux magnétique (151) du dispositif électrique à induction stationnaire (2).
Kabushiki Kaisha Toshiba
Ridout & Maybee Llp
LandOfFree
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