随着大功率模块和微机技术的迅速发展，变频调速技术在工业领域得以推广应用。近年来，变频调速技术在热电厂已广泛应用，多数用于锅炉的引风机、送风机、给水泵，在汽机循环水系统应用尚无先例。 我公司热电厂成功引进９台日立Ｊ３００变频器，用于锅炉引、送风机、给水泵后， With the rapid development of high-power modules and microcomputer technology, frequency control technology in the industrial field to promote the application. In recent years, the frequency control technology has been widely used in thermal power plants, most of the induced draft fan, blower, feed pump for boilers, there is no precedent for the application of steam turbine circulating water system. My company succeeded in introducing nine thermal power plant Hitachi J300 converter for boiler lead, blower, pump,