The invention discloses an energy-saving elevator. The energy-saving elevator comprises a hoistway, a lift car, a linear motor, an energy-saving device and a frequency converter. The lift car is located in the hoistway and connected with the inner wall of the hoistway in a sliding mode. Each linear motor comprises a primary module and a secondary module, the primary modules are installed on the lift car, the secondary modules are installed on the hoistway, and the primary modules and the secondary modules are oppositely arranged. The energy-saving device comprises a storage battery and a converter, and the converter is connected to the storage battery. The frequency converter comprises a rectifier module, a direct-current module and an inverter module, the direct-current module is connected with the rectifier module and the inverter module, the inverter module is connected to the linear motor, and the converter is connected to the direct-current module. Energy generated under the power generation working condition of the elevator motor is stored in the energy-saving device through the frequency converter direct current module, energy waste is reduced, and the problem that current converted by potential energy is fed back to a power grid, and consequently harmonic pollution of the power grid is caused can be solved.
本发明公开了一种节能电梯,该节能电梯包括井道、轿厢、直线电机、节能装置和变频器。轿厢位于所井道内,且与井道内壁可滑动连接。直线电机分别包括初级模块和次级模块,初级模块安装于轿厢上,次级模块安装于井道上,且初级模块和次级模块相对设置。节能装置包括蓄电池和转换器,转换器连接于蓄电池。变频器包括整流模块、直流模块和逆变模块,直流模块连接整流模块和逆变模块,逆变模块连接于直线电机,转换器连接于直流模块。本发明将电梯电机发电工况下产生的能量经过变频器直流模块保存在节能装置中,减少了能源的浪费,而且还可避免势能转化的电流回馈到电网,从而造成电网谐波污染的问题。
Energy-saving elevator and energy-saving method of elevator
节能电梯和电梯的节能方法
2022-04-22
Patent
Electronic Resource
Chinese