Elevator drag and control system: elevator drag control system has gone from simple to complex process. For the elevator of the drag system are: single, two-speed AC motor drive system, AC motor stator speed control drag system, DC generator a motor SCR excitation system, SCR direct power supply drag Dynamic system, VVVF variable frequency variable speed drive system.
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Elevator Control System
Shenyang Bluelight Automatic Technology Co.,Ltd | Updated: Jun 05, 2017
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