PCB Rogowski Coils for Capacitors Current Measurement in System Stability Enhancement
ELECTRONICS(2023)
摘要
In terms of high-current measurement of capacitors, PCB Rogowski coils have attracted much attention because of their small size and easy installation. However, they are vulnerable to electromagnetic interference. In order to improve the immunity of the coil, this paper studies the influence of the structure and parameter changes of the double-layer PCB coil on the measurement accuracy of mutual inductance. By testing the frequency response of four common coil structures, a differential winding coil structure is proposed. Based on the measurement of large capacitance current, the influence of non-electrical parameters of coils on the measurement accuracy of mutual inductance is experimentally verified.
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关键词
PCB Rogowski coils,current sensor,differential winding structure,mutual inductance coefficient,anti-interference
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