Abstract The authors that the Variable Frequency Speed is applicable and economic only in some range to the irrigation and drainage pumping station at the present time. This view has some reference value to the adjusting method of the irrigation and drainage pumping station.
MA Tai-Ling-；Yuan-Bao-Hui. The Variable Frequency Speed Analysis of Applicability and Economic Advisability in Irrigation and Drainage Pumping Station[J]. Journal of Drainage and Irrigation Machinery Engin, 2001, 19(2): 19-21.