汪俊, 王鸿东, 王检耀, 等. 船用电机散热系统的性能分析及评估[J]. 中国舰船研究, 2021, 16(5): 244–254. doi: 10.19693/j.issn.1673-3185.02028
引用本文: 汪俊, 王鸿东, 王检耀, 等. 船用电机散热系统的性能分析及评估[J]. 中国舰船研究, 2021, 16(5): 244–254. doi: 10.19693/j.issn.1673-3185.02028
WANG J, WANG H D, WANG J Y, et al. Analysis and evaluation of marine motor cooling system[J]. Chinese Journal of Ship Research, 2021, 16(5): 244–254. doi: 10.19693/j.issn.1673-3185.02028
Citation: WANG J, WANG H D, WANG J Y, et al. Analysis and evaluation of marine motor cooling system[J]. Chinese Journal of Ship Research, 2021, 16(5): 244–254. doi: 10.19693/j.issn.1673-3185.02028

船用电机散热系统的性能分析及评估

Analysis and evaluation of marine motor cooling system

  • 摘要:
      目的  散热系统的设计将直接影响船用电机的可靠性,需评估不同散热系统对电机各部件散热效果的影响。
      方法  以某高功率密度船用电机为例,采用电子热仿真软件ANSYS Icepak建立电机整体模型,计算轴向水套、螺旋水套和环形水套3种典型散热系统的三维温度场,从部件散热效果、温度梯度等方面进行对比评估,并提出基于强迫风冷与水冷相结合的优化方案。
      结果  计算结果表明,水冷系统解决了机壳和定子的散热问题,减小了轴向和环向的温度梯度,其中环形水套的冷却效果最优,但水冷系统对转子、电机端部的散热效果不佳;经优化后,转子温度和电机整体温度梯度实现了大幅下降。
      结论  建议选择环形水套作为电机水冷系统,同时应考虑辅助散热系统来弥补水冷系统的缺陷。

     

    Abstract:
      Objective  As the design of the cooling system directly affects the reliability of marine motors, it is necessary to evaluate the influence of the cooling system on the motor.
      Method  Taking a high-power-density marine motor as an example, an overall model of the motor is established using the electronic thermal simulation software ANSYS Icepak, and the 3D temperature fields of three typical heat dissipation systems of the axial water jacket, spiral water jacket and annular water jacket are calculated. The cooling effects of the components and temperature gradients are then compared and evaluated, and an optimal scheme based on a combination of forced air-cooling and water-cooling is proposed.
      Results  The calculation results show that the water-cooling system can solve the heat dissipation problems of the casing and stator, and reduce the axial and circumferential temperature gradients. The annular water jacket works best. However, the water-cooling system has a poor effect on the rotor and end casing. After optimization, the rotor temperature and overall temperature gradients of the motor are greatly reduced.
      Conclusion  The annular water jacket is recommended to be chosen as the water-cooling system for marine motors, and an auxiliary cooling system should be considered to make up for the defects of the water-cooling system.

     

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