设计了一套圆筒形直线感应电动机驱动的电梯全数字变频控制系统，对其进行了试验。
This paper introduces a frequency variable control system for elevator driven by linear induction motor, and this elevator has been tested.
优异的噪声抑制能力；有效减少变频器电磁干扰；被广泛应用于变频器，电机驱动，电梯等设备。
Excellent noise rejection; Effectively reduce electromagnetic rence inverter; Been widely used in inverter motor drives, elevators other equipment.
介绍了配置蓄能器的变频驱动液压电梯控制系统的节能原理。
The energy-saving principle of VVVF controlled hydraulic elevators with pressure accumulators is introduced.
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