印制板式Rogowski线圈研究

为了增强印制板式Rogowski线圈拾取感应信号的能力,有效提高其信噪比,将具有相同结构的Rogowski线圈顺次串联并分别获得顺串单、双面板Rogowski线圈后,分析了由单面板构造的顺串单面板传感器的计算模型和等效模型,对比研究了顺串单、双面板Rogowski线圈的阻抗、相频、自感系数和内阻等重要电气参数随着被测电流频率的变化特性,推导了顺串单、双面板Rogowski线圈的最佳阻尼电阻的计算模型,提出了用于判断顺串单、双面板Rogowski线圈测量脉冲大电流的结果有效性的方法及其判据。研究表明,取印制板线圈的顺次串联方式有利于提高传感器的信噪比。

Rogowski Coil Centered on the Printed Board Technology

The printed wire lay down along the single-printed-board or double-printed-board is adopted to produce single-printed-board winding and double-printed-board winding. The two types of printed-board windings can represent the traditional Rogowski coil centered on the conventional winding structure. For increasing the amplitude of the induced potential and improving the anti-interface ability of the printed-board type Rogowski coil, the method by connecting the same printed-board windings in series is suitable. Two double-printed-boards coils in series and two single-printed-board coils in series are proposed to measure the discharging current of the pulse power source. Operation principles and equivalent circuits of the two types of printed board Rogowski coils are analyzed, respectively. The parameter models of self-inductance, mutual inductance, equivalent inductance and damping resistance for both the single-printed-board winding and the double-printed-board winding are presented. Characteristic impedance-frequency and phase- frequency curves for both the single-printed-board winding and the double-printed-board winding are analyzed and presented. The method used to judge the validity of the test results is proposed. Experimental results verify the truth of the design principles and methods of the printed board Rogowski coils including double-printed-board Rogowski coils in series and single-printed-board Rogowski coils in series. Printed-board Rogowski coils in series connection can improve the sensor anti-interface ability.