大型机组锅炉给水泵采用无换向器电动机驱动的经济性分析

ECONOMY ANALYSIS OF THE CONVERTER FED SYNCHRONOUS MOTOR USED FOR BOILER FEED PUMPS IN LARGE POWER PLANTS

无换向器电动机作为一种新型的调速技术，目前在工业发达国家已广泛地应用于火电厂锅炉送、引风机以及锅炉给水泵的驱动方面，但在国内还没有应用实例。从其应用于国产３００ ＭＷ 机组锅炉给水泵驱动的经济性分析情况看，无换向器电动机驱动方式的运行经济性是较好的。从长远来讲，随着变频调速技术的不断发展和完善，无换向器电动机相对于传统的给水泵驱动方式的优势将会更明显，因此，在国内大型机组锅炉给水泵驱动方面，该技术的应用值得引进和推广。

As a new ac variable speed technology, converter fed synchronous motors are widely used to drive boiler feed pumps, forced and drafted fans in power plants in some industry developed countries, but there is no practices in our country. Through the economy analysis of their application in a national 300?MW unit, we know the economy of the converter fed synchronous motor is very good. In a long run, their advantages over the traditional drives will be more obvious, so, we should introduce and develop this technology and apply it to boiler feed pumps in large power plant.