潜液式LNG泵用变频低温异步电机的运行性能研究  

Research on the Operating Performance of an Inverter-driven Cryogenic Induction Motor for a Submerged LNG Pump

作　　者：艾程柳[1,2] 黄元峰[1] 王海峰[1] 顾国彪[1] 

机构地区：[1]中国科学院电工研究所,北京市100190 [2]中国科学院大学,北京市100049

出　　处：《电工技术学报》2015年第14期138-145,共8页Transactions of China Electrotechnical Society

摘　　要：为了详细研究潜液式LNG(liquid natural gas)泵变频低温异步电机的运行性能,本文针对11.1k W低温变频异步电机样机建立了仿真模型,并通过样机的液氮试验验证了该仿真模型的准确性。基于该仿真模型,文中计算了该样机50Hz和100Hz时在液氮(-196℃)中的工作特性和机械特性,结果表明,低温异步电机的性能要优于常温电机,稳定运行转速非常接近同步转速,且电机的恒压频比调速的带载能力强。此外,文中仿真计算了样机在液氮和LNG(-161℃)中的运行性能,结果表明样机在两种流体环境的运行性能差异不大。In order to study the operating performance of the inverter-driven cryogenic induction motor detailly, the simulation model of a ll.lkW prototype has been built in this paper. And its accuracy is proved by the experimental results of the prototype in the liquid nitrogen （-196℃）. The running and mechanical characteristics of the prototype at 50Hz and 100Hz in the liquid nitrogen have been computed by the model. The computation results show that the performance of the cryogenic induction motor is better than the room temperature motor, its revolving speed is close to the synchronous speed and load capability is improved at the control policy of constant voltage frequency ratio. Furthermore, there is little difference between the prototype performance in the LNG （-161 ℃） and the liquid nitrogen by the calculation results based on the simulation model.

关 键 词：LNG泵 低温变频异步电机 液氮低温试验 运行性能 

分 类 号：TM315[电气工程—电机]