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潜液式LNG泵用变频低温异步电机的运行性能研究

, PP. 138-145

Keywords: LNG泵,低温变频异步电机,液氮低温试验,运行性能

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Abstract:

为了详细研究潜液式LNG(liquidnaturalgas)泵变频低温异步电机的运行性能,本文针对11.1kW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。

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