公开(公告)号：WO2012170298A1

公开(公告)日：2012-12-13

申请号：PCT/US2012/040476

申请日：2012-06-01

Applicant: GENERAL ELECTRIC COMPANY ,  FRIES, Jeffrey, Michael ,  ARMSTRONG, Jeffrey ,  BETTIS, Robert, N. ,  BROWN, Bradley, Dale ,  CLARK, Shawn, T. ,  HANN, Gregory, K. ,  KRAELING, Mark ,  MURPHY, Steve, R. ,  PENNY, Daniel, G. ,  VORNDRAN, Eric

Inventor： FRIES, Jeffrey, Michael ,  ARMSTRONG, Jeffrey ,  BETTIS, Robert, N. ,  BROWN, Bradley, Dale ,  CLARK, Shawn, T. ,  HANN, Gregory, K. ,  KRAELING, Mark ,  MURPHY, Steve, R. ,  PENNY, Daniel, G. ,  VORNDRAN, Eric

IPC: G01R15/18 ,  G01R19/20

CPC classification number: G01R15/185 ,  G01R19/20

Abstract: There is provided a voltage or current sensing device. An exemplary voltage or current sensing device includes a drive circuitry configured to deliver a drive current to a magnetic core operably coupled with a conductor, for driving the core to cyclical magnetic saturation. The device also includes sense circuitry configured to receive a voltage signal corresponding to an application current in the conductor. The device also includes signal processing circuitry configured to sample the voltage signal, wherein a first sample is in phase with the drive current and a second sample is out of phase with the drive current. The device also includes a feedback loop configured to deliver a compensation current to the magnetic core, wherein the compensation current is configured to balance the magnetic core and wherein the compensation current is based at least in part on the first sample in phase with the drive current.

Abstract translation: 提供了电压或电流检测装置。 示例性电压或电流感测装置包括驱动电路，其被配置为将驱动电流传送到与导体可操作地耦合的磁芯，用于驱动磁芯循环磁饱和。 该装置还包括被配置为接收对应于导体中的施加电流的电压信号的感测电路。 该装置还包括被配置为对电压信号进行采样的信号处理电路，其中第一采样与驱动电流同相，而第二采样与驱动电流异相。 该装置还包括被配置为向磁芯传送补偿电流的反馈回路，其中补偿电流被配置为平衡磁芯，并且其中补偿电流至少部分地基于与驱动电流同相的第一采样 。