基于谐波反向补偿原理的新型正交可控消弧线圈

介绍了正交可控消弧线圈的基本工作原理，分析了正交消弧线圈的磁路模型和等效电路。针对该消弧线圈自身非线性磁特性造成的谐波问题，利用数学拟合的方法，结合傅里叶分析演算推导正交可控消弧线圈的谐波含量。文中提出反向谐波补偿原理，该方法能够补偿正交可控消弧线圈工作过程中产生的大量谐波；采用实时跟踪检测控制，使产生谐波的特殊信号反向叠加到控制侧，以抑制谐波的产生，从而大大降低工作侧电流的谐波水平；理论分析和实验结果证明了该方法的有效性和可行性。

A Novel Orthogonal Controllable Extinction Coil Based on Inverse Harmonic Compensation Theory

This paper introduced the orthogonal controllable extinction coil's basic working theory,and analyzed the orthogonal controllable extinction coil's magnetic circuit model and equivalent circuit.To the harmonic problem caused by extinction coil's own nonlinear magnetic characteristics,this paper adopted mathematical fitting method combining with FFT,to deduce the orthogonal core harmonic content.It also developed inverse harmonic compensation theory,which could compensate the orthogonal controllable extinction coil's working harmonics.The system used real-time tracking detection to make the harmonic signal superimpose to the control side inversely,which could suppress the harmonics.This method reduces harmonic content level of working side.Theoretical analysis and experimental results confirm the effectiveness and feasibility of the proposed state of the technique.