Title:
クローズドループフラックスゲート電流センサー
Document Type and Number:
Japanese Patent JP5606521
Kind Code:
B2
Abstract:
Electrical current sensor comprising a measuring circuit (6) and an inductor (4) for measuring a primary current I P flowing in a primary conductor (2), the inductor comprising a saturable magnetic core (10) made of a highly permeable magnetic material and a secondary coil (12) for carrying an alternating excitation i configured to alternatingly saturate the magnetic core, the coil being connected to the measuring circuit. The measuring circuit is configured to supply a positive or negative voltage to the inductor, to switch off the voltage when a condition signalling saturation is reached, to measure the time to saturation t 1 in one direction and the time to saturation t 2 in the other direction of the magnetic core and determine therefrom a value of the primary current for small current amplitudes, the measuring circuit being further configured for evaluating the average value of the excitation current i and determining therefrom the value of the primary current for large currents.
Inventors:
テパン Wolfram
アッゾニ ダヴィデ
アッゾニ ダヴィデ
Application Number:
JP2012510416A
Publication Date:
October 15, 2014
Filing Date:
May 10, 2010
Export Citation:
Assignee:
Rem アンテレクチュアル Pro ペルティ エスアー
International Classes:
G01R15/18
Attorney, Agent or Firm:
Koji Kitamura
Toshio Takao
Toshio Takao