A common direct-current bus elevator energy-saving system controls a storage battery to supply power to a direct-current bus end of an elevator frequency converter to drive an elevator to run, or controls the direct-current bus end of the elevator frequency converter to charge the storage battery to achieve the purpose of energy saving, and two-way automatic switching is achieved. When an elevator power supply main switch is switched off, the system is automatically switched off after detecting, the storage battery stops supplying power to the elevator frequency converter direct-current bus end, and accidental electric shock of maintainers or accidental movement of the elevator is prevented. Appropriate time delay is added, when an elevator main switch is closed, a large capacitor in the elevator frequency converter is completely charged, then the energy-saving system is delayed to be connected, the direct current bus end of the frequency converter is prevented from being connected with direct current too early, and the frequency converter is effectively prevented from being burnt.
一种共直流母线电梯节能系统,控制蓄电池向电梯变频器直流母线端供电驱动电梯运行,或控制电梯变频器直流母线端向蓄电池充电,达到节能的目的,双向自动切换;当电梯电源主开关断开情况下,系统检测到后自动切断,蓄电池停止向电梯变频器直流母线端供电,防止检修人员意外触电或电梯意外移动;加入适当延时,在电梯主开关闭合时,使电梯变频器内大电容完全充电结束,然后节能系统再延迟接入,防止变频器直流母线端过早有直流电接入,有效避免变频器烧毁。
Common direct current bus elevator energy-saving system
一种共直流母线电梯节能系统
2023-04-04
Patent
Electronic Resource
Chinese
IPC: | B66B Aufzüge , ELEVATORS |
Energy-saving elevator and energy-saving method of elevator
European Patent Office | 2022
|