毕业论文(设计)外文资料翻译题目：变频器设计使用参考陕西科技大学Converter reference design(1) Converter Selection: Selection to determine the frequency converter when the following points: 1) The purpose of a variable frequency; constant pressure to control or constant current control. 2) the load converter types such as leaves or pump volume pumps, with special attention to load the performance curve, the performance curve of the decision of the ways and means. 3)
