Method and device for supplying power to emergency power supply device ofenergy feedback elevator and elevator

Abstract

The embodiment of the invention discloses a method and a device for supplying power to an emergency power supply device ofan energy feedback type elevator and an elevator, The emergency power supply device is connected into an energy feedback type elevator as a backup power supply, and comprises a backup battery and an inverter module for outputting alternating current from the energy stored in the backup battery, wherein the alternating current output by the inverter module is the same as the mains frequency and voltage range used for the elevator frequency converter in the energy feedback type elevator. In the embodiment of the invention, the renewable energy generated by the elevator can be reasonably utilized without changing the structure of the elevator frequency converter, thereby reducing the design requirements of the elevator frequency converter, reducing the energy requirements of the power outage emergency power supply and reducing the cost.

Description

technical field [0001] The invention relates to the technical field of elevators, in particular to a method and device for supplying power to an energy feedback type elevator lower emergency power supply device and an elevator. Background technique [0002] With the development of drive technology, the emergency operation of the elevator after a power failure becomes simple. It only needs to provide power to the elevator control system. The inverter of the elevator can control the elevator car to run at a low speed in the direction of light load and labor saving under low voltage conditions. A low-power emergency power supply can be used to realize the emergency operation of the elevator after a power failure. The power demand of the elevator power failure emergency device is reduced. With the development of technology and the development of permanent magnet synchronous motors, energy feedback elevators can feed back more electricity generated by potential energy changes of...

AI Technical Summary

Problems solved by technology

To do emergency operation after power failure, it is necessary to increase the IGBT and discharge resistance of the discharge unit. In the case of power failure emergency operation function and non-power failure operation function, it is necessary to change the hardware design of the elevator inverter, resulting in low consistency of elevator products and difficult maintenance.

The emergency operation of the elevator after a power failure requires an emergency power supply to provide control power for the elevator on the one hand, and on the other hand, the renewable energy generated during energy feedback needs to be completely consumed on the resistor, and the utilization rate of the renewable energy is not high

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