The invention discloses an energy feedback method and system for an elevator. The method comprises the steps that the real-time running state of the elevator is obtained; whether an alternating-current motor is in a power generation state or not is detected according to the real-time running state of the elevator; when the alternating-current motor is in the power generation state, whether energy feedback is started or not is judged, if energy feedback is started, potential energy is converted into electric energy with the same frequency as a power grid port by the aid of a preset feedback process, and the electric energy is fed back to a power grid; and if energy feedback is not started or the elevator is not in the power generation state, a preset electric process is adopted for supplying power to the elevator. The electric energy generated by the aid of a brake resistor can be reduced, the energy consumption of the elevator is reduced, power grid pollution is reduced, the service life of internal devices of the elevator is prolonged, and the operation cost of the elevator is reduced.
本发明公开了一种电梯的能量回馈方法及系统,所述方法包括:获取电梯的实时运行状态;根据电梯的实时运行状态检测交流电机是否处于发电状态;当处于发电状态时,判断是否启动能量回馈,若启动能量回馈,则采用预设的回馈过程将势能转化为与电网端口同频率的电能,并回馈到电网;若不启动能量回馈、或不处于发电状态时,采用预设的电动过程为电梯供电。本发明能够能够减少使用制动电阻产生的电能,降低电梯的能耗,减少电网污染,增加电梯内部器件的使用寿命,降低电梯的运营成本。
Energy feedback method and system of elevator
一种电梯的能量回馈方法及系统
2021-06-22
Patent
Electronic Resource
Chinese
Elevator energy feedback energy-saving monitoring device
European Patent Office | 2021
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