低效率电动机节能分析  

Low Efficiency Motor Energy Saving

作　　者：张焕祥[1] 叶雅锋 胡嗣炯[1] 

机构地区：[1]轻工业杭州机电设计研究院,杭州310004

出　　处：《电气技术》2013年第1期53-54,74,共3页Electrical Engineering

摘　　要：三相交流异步电动机的效率越高,其转差率越小。也即在额定频率与电压下,相同负载的转速越高。对于某些功率与转速成正比,甚至成高次方比的负载来说,也就意味着电动机的输出功率的提高。反过来说,低效率电动机因其转差率的增大而使负载转速下降,就可使电动机的输出功率减少,从而达到节电目的。In theory,the three-phase AC asynchronous motor slip is inversely proportional to its efficiency.To be specific,under the specified frequency and voltage,the higher the efficiency is,the higher the output speed can be achieved.In order to reduce the output power of a low efficient motor,one feasible technique can be to suppress the load speed by increasing the slip.As an example of electrical energy saving practice,such technique showcases its simplisticity and practicality,and yet can often be neglected when techniques are to be developed.

关 键 词：电动机 功率 效率 转差率 转速 节电效果 

分 类 号：TM343[电气工程—电机]