双定子式笼型无级调速异步电动机的分析研究

Variable Speed Squirrel-Cage Induction Motor with Double Stator

本文研究了一种新型的汉定子式笼型无级调速异步电动机的机械特性和能量传递关系。证明了当电机运行于低速时，有一个定子绕组工作在发电状态，将能量反馈电网。样机的试验数据表明理论分析是正确的。将该电机用于拖动流量变化的风机和泵类负载具有显著的节能效果。

A new variable speed squirrel-cage induction motor is discussed in this paper.It is made up of a squirrel-cage rotor and two stators. Its torque-speed chararacteristics and relationship of energy-transference are described. In this paper, it is proved that when the motor is at low speed operation,one of the stator is in the mode of power generator and the energy is feedbacked to the source of electrical energy. The results of the experiments on a test motor suggest that the analysis be correct. When the proposed motor is used with loads as fans and pumps, of which the quantity of flow is variable, remarkable effect on saving energy can be obtained.