G - Physics – 01 – R
Patent
G - Physics
01
R
G01R 27/02 (2006.01) G01R 27/26 (2006.01) G01R 31/02 (2006.01) G01R 35/00 (2006.01)
Patent
CA 2536083
A test system and method having a test channel and an additional channel (212), and wherein the ratio of amplitude and phase between the interference current through the device under test (208) and the interference signal on the additional channel (212) are determined. The system further applies a voltage (202) at or near line frequency to the device under test (208), and then continuously subtracts the additional interference signal from the current signal through the device under test. In doing so, the system and method allows accurate measurements of the real and reactive power of an impedance at or very close to the line frequency.
L'invention concerne un système et un procédé d'essai comportant un canal d'essai et un canal supplémentaire (212), qui permettent de déterminer le rapport d'amplitude et de phase entre le courant de brouillage traversant le dispositif à l'essai (208) et le signal de brouillage sur le canal supplémentaire (212). Le système applique au dispositif à l'essai (208) une tension (202) à la fréquence d'alimentation ou à une fréquence proche de celle-ci, et soustrait en continu le signal de brouillage supplémentaire du signal en cours traversant le dispositif. Le système et le procédé permettent ainsi de mesurer précisément la puissance réelle et réactive d'une impédance à la fréquence d'alimentation ou à une fréquence très proche de celle-ci.
Finlayson & Singlehurst
Hubbell Incorporated
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