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.
这个过程就是所谓再生制动。
这就是所谓的“安全制动距离”。在信号的两边都留出了空间来满足这个要求。
This is known as a "safe braking distance" and space is provided beyond each signal to accommodate it.
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