Uninterrupted driving device for elevator traction machine and driving method of uninterrupted driving device

Abstract

The invention belongs to the technical field of elevator products and particularly discloses an uninterrupted driving device for an elevator traction machine. The uninterrupted driving device comprises the traction machine, two or more traction machine driving modules, a driving module switching controller and a return circuit switching device. In the operation process of an elevator, if an individual traction machine driving module has a fault, the driving module switching controller can switch off the traction machine driving module with the fault through the return circuit switching device immediately, and the remaining traction machine driving modules supply power to the traction machine continuously. When the power of each traction machine driving module is configured to be the rated power of the elevator, the operation characteristic of the elevator before the fault happens and after the fault happens is not changed; when the power of each traction machine driving module is configured to be smaller than the rated power of the elevator, each traction machine driving module can be switched to a low power mode through a certain speed retardation curve when the fault happens, emergency stop and people trapping are avoided when the fault happens, and personnel injury of passengers is reduced. The elevator is not needed to be stopped when maintenance personnel repair and replace a fault part after the fault happens, the repair operation can be carried out on-line safely, and the conveying efficiency of a building is ensured while the repair and maintenance convenience is achieved.

Description

technical field [0001] The invention belongs to the technical field of elevator products. In particular, it relates to an elevator traction machine uninterrupted driving device and a driving method thereof. Background technique [0002] At present, there is generally no uninterrupted driving device in the elevator industry, and the driving of the traction machine is realized through a driving device, and the driving device is mostly a frequency converter. If the driving device fails or is damaged during the operation of the elevator, the elevator brake will immediately lock the traction machine, the elevator stops suddenly, and due to the failure of the driving device, the elevator cannot start again, and it is necessary to wait for the maintenance and rescue personnel to arrive at the scene. Fault repair and passenger rescue will cause people to be trapped, and the vibration shock caused by the emergency stop during the fault may also easily cause the elderly, pregnant wom...

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Problems solved by technology

After that, the elevator maintenance personnel check the elevator failure and replace the damaged parts before the elevator can be pu

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