Method for controlling a water contactor drive for a water contactor with an electric machine, operating circuit, water contactor drive and hydropower plant

摘要

The invention relates to a method for controlling a water contactor drive (200) for a water contactor (100), in particular for a water roller contactor, preferably in a hydropower plant (1000), the drive having an electrical machine, in particular an asynchronous machine (210), especially an asynchronous motor / generator. According to the invention, the electrical machine, in particular the asynchronous machine (210), has a fan brake (230), the method comprising the steps of: - releasing the fan brake (230) in the event that an insufficient power supply is indicated, - automatically Operating the electrical machine, in particular an asynchronous machine (210), the electrical machine, in particular an asynchronous machine, being operated in regenerative island operation, in which a rotating field is generated automatically.