智能型切换电容器接触器

Intelligent Contactor of Switching Capacitor

提出一种新型智能切换电容器接触器。在现有普通交流接触器的基础上,对其控制回路进行特殊改造,在接触器触头端电压过零点附近将电容器投入,能有效地将涌流控制在电容器额定电流的5倍以内。分析了限流实验数据。实验结果表明,该接触器具有自适应、节能、无噪声和可靠性高的特点。

A new intelligent contactor with switching capacitor was presented. Based on available general AC contactor,its control loop was altered especially. When making the capacitor into the power system at end voltage zero-cross of contactor,it can limit surge current within 5 times of the rate current of capacitor. The data of limit current experiment shows that the contactor has merits of self-adaption,energy saving, no noise and high reliability.