有源电抗器的阻抗调控特性

Impedance Control Characteristic of Active Reactor

研究了一种基于磁通控制原理的电感和电阻连续可调的有源电抗器。通过对有源电抗器在正弦电路中伏安特性的分析,提出了有源电抗器等值电阻和等值电感的独立调控方法以及负电阻和负电感的产生条件。在补偿绕组中注入一个与主绕组电流同相或反相的补偿电流,可以独立调节主绕组的等值电感;在补偿绕组中注入一个与主绕组电流相位正交的补偿电流,可以独立调节主绕组的等值电阻。建立了有源电抗器的仿真和实验系统,验证了有源电抗器的可实现性。

A new kind of an active reactor with continuous adjustable inductance and resistance is studied based on the magnetic flux control theory in this paper. Also, the independent control method of equivalent inductance and resistance of an active reactor as well as the generating conditions of negative resistance and negative inductance were suggested via the analysis of volt-am- pere characteristics of active reactor in the sinusoidal circuit. The compensation current in the same phase or the reversed phase of the primary winding current injected into the compensation winding can adjust the equivalent inductance of primary wlnding;and also, the compensation current in the orthogonal phase of the primary winding current injected into the primary winding can adjust the equlvalent resistance of the primary winding independently. The simulation and experiment results testify the feasibility of the active reactor.