交流矿井提升机的减速阶段，一般要求主要用动力制动，但速度闭环控制难实现。
Power braking is usually required when mine hoist is at reducing stage, but sPeed closed-loop control is difficultly realized.
在所谓制动阶段，功率从开关型变流器的交流侧流向直流侧；此时变流器相当于一个整流器。
During the so-called braking of the motor, the power flows from the ac side to the dc side of the switch-mode converter and it operates in a rectifier mode.
不同的全制动距离阶段划分方式及其设备配置决定了高速客运专线信号控制及列车运行方式。
The signaling and operations of high-speed passenger trains depend on the braking stage design and relative equipment configuration to fulfill a complete braking process.
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