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    • 10. 发明申请
    • WIDEBAND CONTACTLESS MAGNETORESISTIVE-ROGOWSKI CURRENT SENSING
    • 宽带无接触磁阻ROGOWSKI电流感应
    • WO2017197269A1
    • 2017-11-16
    • PCT/US2017/032415
    • 2017-05-12
    • THE UNIVERSITY OF NORTH CAROLINA AT CHARLOTTE
    • PARKHIDEH, BabakNIBIR, Shahriar, Jalal
    • G01R15/14G01R1/20G01R15/20G01R31/302G01R31/312
    • G01R15/205G01R15/181G01R19/0092
    • Various examples are provided for contactless wideband current sensing. A combination of magnetoresistive (MR) sensor and Rogowski coil outputs can be combined to provide current sensing from DC to 10 MHZ or more. In one example, a system includes a MR sensor that can provide an MR output voltage corresponding to a magnitude of the current through a trace; a Rogowski coil sensor that can provide a Rogowski output voltage corresponding to a magnitude of the current; and processing circuitry configured to generate an output current signal by aggregating the MR and Rogowski output voltages. In another example, a method includes conditioning an output from a MR sensor disposed adjacent to a trace carrying a current; conditioning an output from a Rogowski coil disposed adjacent to the trace; and aggregating the first and second conditioned signals to provide an output current signal corresponding to the current passing through the trace.
    • 提供了用于非接触宽带电流感测的各种示例。 磁阻(MR)传感器和Rogowski线圈输出的组合可以组合在一起,提供从DC到10 MHZ或更高的电流感测。 在一个示例中,系统包括MR传感器,其可以提供对应于通过迹线的电流的大小的MR输出电压; Rogowski线圈传感器,其可以提供与电流的大小相对应的Rogowski输出电压; 以及处理电路,被配置为通过聚集MR和罗戈夫斯基输出电压来生成输出电流信号。 在另一个示例中,一种方法包括:调节来自设置在携带电流的轨迹附近的MR传感器的输出; 调节来自布置在所述迹线附近的罗柯夫斯基线圈的输出; 并且聚合第一和第二调节信号以提供对应于通过迹线的电流的输出电流信号。