Slip of Induction Motor with Frequency Speed Control
-
摘要: 以异步电动机机械特性曲线为基础,分析了变频调速异步电动机在拖动恒转矩负载、恒最大转矩负载、变转矩(非风机和泵类)负载、恒功率负载以及风机和泵类负载时,转差率随频率变化的规律.给出了在不同性质的负载和频率条件下,电动机的转差率和转速的计算公式.研究表明,变频调速电动机的转差率随频率的变化而变化.本研究的结论否定了变频调速电动机转差率不变的观点.Abstract: Based on the torque-speed characteristic curve of induction motors,analyses were done on changes in slip with an variation in frequency when an induction motor drives different kinds of loads,including those with constant torque,constant-maximum torque,variable torque(except fans and pumps) and constant power,as well as fans and pumps.The formulas to calculate the slip and the speed under different frequencies and loads were presented.The analyses show that slip changes with an change in frequency for an induction motor with frequency speed control.This conclusion does not support the viewpoint that the slip of an induction motor with frequency speed control is constant.
-
Key words:
- frequency speed control /
- induction motor /
- frequency /
- slip /
- load /
- torque
-
齐维贵,朱学莉,张延丽.抽油机节能的模糊神经网络控制研究[J].中国电机工程学报,2004,24(6):135-137.Qi W G,Zhu X L,Zhang Y L.A study of fuzzy neural network control of energy-saving of oil pupm[J].Proceedings of the CSEE,2004,24(6):135-137.[2] 汤蕴缪.电机学——机电能量转换[M].北京:机械工业出版社,1986.63-183.[3] 曹玉泉,尹丽春,姚建红.变频调速输油电机功率因数和频率负载率的关系[J].天然气与石油,2003,21(4):46-49.Gao Y Q,Yin L C,Yao J H.Relation betwee motor power factor and load coefficient in oil transfer system with frenquncy variation speed-regulation[J].Natural Gas and Oil,2003,21(4):46-49.[4] 秦曾煌.电工学(上册)(第6版)[M].北京:高等教育出版社,2004.211.[5] 易继锴,江祥贤,侯媛彬,等.电气传动自动控制原理与设计[M].北京:北京工业大学出版社,1997.392.[6] 李发海,王岩.电机与拖动基础[M].北京:清华大学出版社,1997.277.[7] 艾建伟.高压变频技术在炼钢厂转炉除尘风机上的应用[J].变频器世界,2003,7(1):43-45.Ai J W.Application of hight-voltage inverter technologe in converter dust removed air fan of speel-making factor [J].The Wrold of Inverters,2003,7(1):43-45.[8] 聂能光,李福忠.风机节能与降噪[M].北京:科学出版社,1990.187.[9] 李发海,陈汤铭,郑逢时,等.电机学(第2版)[M].北京:科学出版社,1991.470,502.[10] 吴安顺.最新实用交流调速系统[M].北京:机械工业出版社,1998.308. -
点击查看大图
计量
- 文章访问数: 1320
- HTML全文浏览量: 85
- PDF下载量: 448
- 被引次数: 0
下载: