变频器在300MW空冷机组空冷风机中的应用与维护

Application and Maintainance of Frequency Converter in Air Cooling Fan of 300 MW Air Cooling Generating Unit

变频器有很多优点，随着价格的降低，变频器越来越普遍地在电力系统中得到应用，为此，介绍变频器的简单原理，它的应用和维护。并指出了使用中应注意的问题。

Frequency converter have a lot of advantages. Along with the drop of price,frequency converter are more and more used in electric power system. Therefore, this paper introduces simply the principle,application and maintainance of frequency converter. And finally,it pointsout the considerable problems in applications.