磁饱和式可控电抗器的工作特性及其仿真研究

Operational Characteristics and Simulation of the Magnetic-saturated Controllable Reactor

介绍了一种具有完全对称磁路结构的磁饱和式可控电抗器,分析了该种可控电抗器的基本电路结构、工作原理和工作状态,并理论分析了该种可控电抗器的工作特性,主要是控制特性和谐波特性,得出了该种可控电抗器输出电流及其波形畸变率与控制量,即控制绕组所联结晶闸管触发角的非线性函数关系。通过对一小容量工业样机进行详细的仿真研究,得出了更为具体的反映该种磁饱和式可控电抗器输出电流随饱和度变化的响应特性和谐波特性。仿真结果与理论分析相一致,验证了仿真模型的正确性与精确性,并由此表明了该种磁饱和式可控电抗器具有控制性能良好、输出电流谐波分量很低的工作特性。研究结果对于该类磁饱和式可控电抗器的工程设计与运行分析具有一定的理论指导与实践参考意义。

This paper introduces a magnetic-saturated controllable reactor with symmetrical magnetic structure, analyzes its basic circuit structure, operational mechanism and state, and theoretically analyzes its operational characteristics of control and harmonic. Furthermore, the nonlinear function relationship between the output currents and the firing angle of the GTO connected with the controllable winding of the controllable reactor is obtained. By simulation of a small-capacity industrial model machine, the response and harmonic characteristics of output current versus saturation are achieved., The simulation results are consistent with the theoretical ones, which verifies the correctness and accuracy of the simulation model, and demonstrates that this kind of controllable reactor has better controllability and lower harmonic component of output current.