磁放大器在交流拖动提升机中的应用

Application of Magnetic Amplifier to A.C. Drive Hoist

结合电磁感应和电路的有关公式,介绍磁放大器的结构和工作原理以及在正反馈条件下,它的继电特性形成过程。通过它在提升机限速保护中的应用,叙述了具体调整步骤。

The paper introduces the structure and operating principle of a magnetic amplifier and the course forming its relay character under condition of positive feedback, and describes the adjusting procedure of the amplifier through applying it to the speed-limiting protection of a hoist.