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首页> 外文会议>2012 Compressor/Refrigeration amp; Air Conditioning/High Performance Buildings Conferences at Purdue >Thermal Modeling for the Motor in Semi-hermetic Screw Refrigeration Compressor under Part-load Conditions
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Thermal Modeling for the Motor in Semi-hermetic Screw Refrigeration Compressor under Part-load Conditions

机译：半密封螺杆式制冷压缩机部分负载条件下的电机热模型

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摘要

Semi-hermetic screw refrigeration compressor is mostly driven by a three phase asynchronous induction motor withrnits squirrel cage rotor attached to the shaft of the compressor helical male rotor. The motor is cooled by lowrntemperature refrigerant coming from evaporator before it is inspired into compressor suction port. In order torninvestigate cooling effects of the motor and performance of the compressor under part-load conditions, a lumpedrnparameter model describing heat transfer characteristics inside the motor and a part-load model of screwrnrefrigeration compressor are developed. Heating effects at compressor suction end are taken into account and nodesrnrepresenting refrigerant inside the motor cooling passages are modeled separately. Due to the decreasing refrigerantrnmass flow rate and motor efficiency, temperature rise of refrigerant through the motor increases and stator windingrntemperature curve goes up when the compressor load drops by suction volume variation.
机译：半封闭螺杆式制冷压缩机主要由三相异步感应电动机驱动，其鼠笼转子连接到压缩机螺旋公转子的轴上。电机被来自蒸发器的低温制冷剂冷却，然后被吸入压缩机吸入口。为了研究部分负载条件下电动机的冷却效果和压缩机的性能，建立了描述电动机内部传热特性的集总参数模型和螺杆制冷压缩机的部分负载模型。考虑了压缩机吸入端的热效应，并分别模拟了代表电动机冷却通道内部制冷剂的节点。由于制冷剂流量和电动机效率的降低，当压缩机负荷因吸气量变化而下降时，制冷剂通过电动机的温升增加，并且定子绕组的温度曲线上升。

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  • 来源
  • 会议地点 Purdue IN(US)
  • 作者

    Wenqing CHEN; Jiubing SHEN; Zhilong HE; Huagen WU; Ziwen XING;

  • 作者单位

    School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an, 710049, China Phone: 86-29-82675258, Fax: 86-29-82663783, E-mail: wqchen@hotmail.com;

    School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an, 710049, China;

    School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an, 710049, China;

    School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an, 710049, China;

    School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an, 710049, China;

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