鼠笼式异步电动机电液变阻软起动技术的研究与应用  

The Study and Application of Soft-start Technique with Liquid-electrolytic Rheostat in Squirrel Cage Induction Motor

作　　者：苗敬利[1] 黄尔烈[1] 马文辉[2] 孙建府 

机构地区：[1]河北工程学院电子系,邯郸056038 [2]河北邯郸市农业学校,邯郸056001 [3]石家庄市四达电机公司,石家庄050062

出　　处：《机床与液压》2005年第12期74-75,共2页Machine Tool & Hydraulics

摘　　要：介绍了在鼠笼式异步电动机上应用的电液变阻软起动装置的原理及性能特点,通过实践证明了电液变阻软起动技术不仅改善了电动机起动电流大对电网和设备造成的冲击,能使起动电流控制在电动机额定电流的2.5倍以内,而且起动过程中由于电液变阻装置的电阻值随电机负荷的增大而均匀减小,从而使电机具有平滑的起动性能。The principle and performance characteristic of soft - start technique with liquid - electrolytic rheostat and its application in induction motor with squirrel cage rotator were introduced. The results show that this technique can improve the strike of large start current of a motor to electric network and equipment, and control the start current to be within 2.5 times rated current of the motor. The smooth start of the motor can be realized because the resistance of the liquid - electrolytic rheostat is lowered with increasing of motor load.

关 键 词：电液变阻 起动电流 鼠笼式电动机 

分 类 号：TM922.724[电气工程—电力电子与电力传动]