PCB Rogowski Coils for Capacitors Current Measurement in System Stability Enhancement

In terms of high-current measurement capacitors, PCB Rogowski coils have attracted much attention because their small size and easy installation. However, they are vulnerable to electromagnetic interference. order improve the immunity coil, this paper studies influence structure parameter changes double-layer coil on accuracy mutual inductance. By testing frequency response four common structures, a differential winding is proposed. Based large capacitance current, non-electrical parameters inductance experimentally verified.