新型磁通补偿式空心可控电抗器

摘要

介绍了一种新型磁通补偿感应式可控电抗器，分析了该新型可控电抗器的基本结构、工作原理，在其空心绕组及其外的电磁屏蔽之间，新加多组控制绕组，通过将其开闭实现电感值的改变。通过场路结合的分析方法，理论计算了该可控电抗器的电感值，并通过对一小容量样机进行详细的实验研究，得出了包括控制特性、谐波特性、输出电流及其波形畸变率。实验结果与理论分析一致，验证了模型的正确性与精确性，并由此表明了该种磁通补偿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优点。研究结果对于磁通补偿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。%A novel controllable reactor is introduced with magnetic flux compensation. The inductance can be changed by opening or closing multiple groups of control winding. The basic circuit structure, operational mechanism and working state is analyzed, and inductance of the controllable reactor is theoretically calculated based on circuit and field methods. By test of a small-capacity industrial model machine, its operational characteristics of control and harmonic is obtained. Furthermore, the response and harmonic characteristics of output current versus saturation are achieved. The experiment results are consistent with the theoretical ones, which verifies the correctness and accuracy of the model, and demonstrates that this kind of controllable reactor has better controllability and lower harmonic component of output current. The research result is of theoretical guidance and practical significance for engineering design and operation analysis of the flux compensated controllable reactor.