The original cooling tower fan drive system was composed of three-phase asynchronous motor,drive shaft and reducer.The main problems with this drive system were:it had a certain mechanical efficiency loss;there were many components and multiple fault points.The drive system was modified.A direct-coupling permanent magnet motor was used to replace the original drive system.The fan blades could be directly installed on the drive device,and the reducer and coupling were not required.Electricity consumption,fault points,and maintenance costs were reduced.
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