提高电动机功率因数的节电应用  

Power saving appplication of improving motor power factor

作　　者：宋自用 朱伟锴 钱曦明 沈心怡 SONG Zi-yong;ZHU Wei-kai;QIAN Xi-ming;SHEN Xin-yi(Zhejiang Tongkun Group Co.,LTD,Jiaxing 314500,China)

机构地区：[1]桐昆集团股份有限公司,浙江嘉兴314500 [2]浙江恒创先进功能纤维创新中心有限公司,浙江桐乡314500

出　　处：《聚酯工业》2022年第6期61-63,共3页Polyester Industry

摘　　要：交流电动机在运行时,随着速度、负载的不同,存在着大量的无功功率,无功功率本身并不消耗电能,但无功功率在有电阻的电机绕组、线路上传输时,就消耗了有功功率,无功功率越大,电能损耗就越大,通过使用工频电机就地无功补偿、变频电机调整压频比的方法来提高电动机的功率因数,从而降低电动机线路损耗,达到交流电动机经济运行的目的。When the AC motor is running,there is a large amount of reactive power with different speed and load.Reactive power itself does not consume electric energy,but when reactive power is transmitted on the motor winding and line with resistance,it consumes active power.The greater the reactive power,the greater the electric energy loss.Through the use of power frequency motor local reactive power com pensation The variable frequency motor adjusts the voltage frequency ratio to improve the power factor of the motor,so as to reduce the reactive power loss of the motor line and achieve the purpose of economic operation of AC motor.

关 键 词：无功损耗 就地补偿 负荷率 

分 类 号：TQ323.41[化学工程—合成树脂塑料工业]