起重机械两种调速方法的比较

A Comparison Between Two Adjustable-Speed Methods of Hoisting Mechanism

起重机械的种类很多,其拖动系统的差异较大,但基本特点则大同小异。起重机的调速方法一般有绕线转子串电阻调速和变频器调速两种。通过两种调速方式的比较,可知两种调速方式的功率损耗情况,进而找到更节能更适合的调速方法。

Hoisting mechanism has many types, but basic characteristics of them are more alike. There are two adjustable-speed methods for hoisting mechanisms, one is to use series connected resistance for wound rotor, the other is to use inverter. By comparison of this two methods, the power loss of them can be known, and then the method, which is more energy-saving and favorable, can be obtained.