公开(公告)号：US20120091996A1

公开(公告)日：2012-04-19

申请号：US13000069

申请日：2009-06-17

Applicant: Ralf Koch ,  Juergen Schoettle ,  Marcus Bremmer ,  Jen Doeblitz ,  Michael Wolf

Inventor： Ralf Koch ,  Juergen Schoettle ,  Marcus Bremmer ,  Jen Doeblitz ,  Michael Wolf

IPC: G01R19/00

CPC classification number: G01R19/20 ,  G01R15/185

Abstract: Disclosed are a method and an array for measuring a primary current in a primary conductor that is magnetically coupled to a secondary conductor via a ferromagnetic core. In said method and array, the following is done; a voltage having a specific amplitude is applied to the secondary conductor such that a secondary current flows for reversing the magnetization of the ferromagnetic core; the secondary current is measured while the magnetization of the ferromagnetic core is reversed in order to obtain a first measured value; the polarity of the voltage is reversed such that a secondary current flows for once again reversing the magnetization of the ferromagnetic core; the secondary current is measured while the magnetization of the core is reversed in order to obtain a second measured value; the primary current is calculated in accordance with the first and the second measured value, the polarity of the voltage being regularly reversed at a certain sensor frequency that is continuously varied.

Abstract translation: 公开了用于测量通过铁磁芯磁耦合到次级导体的初级导体中的初级电流的方法和阵列。 在所述方法和数组中，完成以下操作： 将具有特定振幅的电压施加到次级导体，使得次级电流流动以逆转铁磁芯的磁化; 在铁磁芯的磁化反转的同时测量次级电流，以获得第一测量值; 电压的极性反转，使得次级电流再次流动以使铁磁芯的磁化反转; 测量次级电流，同时磁芯的磁化反转以获得第二测量值; 根据第一和第二测量值计算初级电流，电压的极性在连续变化的特定传感器频率处有规律地反转。