永磁同步平面电机水冷散热系统的研究

发布时间：2018-02-22 21:53

本文关键词： 永磁同步平面电机水冷散热系统水冷散热器 CFD　出处：《电子科技大学》2015年硕士论文　论文类型：学位论文

【摘要】：随着科技的不断进步,高新技术制造业向着高速化、精密化和模块化方向发展,对制造领域内加工设备的定位精度和速度提出了严格的要求。平面电机具有结构简单、反应迅速、灵敏度高等特点,使其在平面二维定位装置上广泛应用。但是平面电机的发热功率较高,热流密度较大,为保障其正常运行和控制精度,就必须对电机进行散热研究。传统的散热方式风冷,已经逐渐不能满足这种高热流密度的要求,而水冷散热器因为其高对流换热系数和高效率被广泛地研究。基于此,本文针对一种动圈式永磁同步平面电机设计并制作了一套水冷散热系统。针对散热系统的核心部件水冷散热器进行研究,对于散热器的设计和提高散热器的性能具有重要意义,对于加强平面电机的温度均匀性具有实际意义。本文首先针对水冷散热器进行研究,基于对传统流道结构水冷散热器性能的研究,即传统串联流道结构水冷散热器散热效率高而流道内压力损失较大,对泵的要求较高,而传统并联水冷散热器流道压力损失较低,不过其散热效率也较低且通道内水的流速不均匀。根据文献的调研及科研经验,总结了如何提高散热器性能的方法,因此为了提高散热器的性能,增强散热器的均温性,本文在此基础上提出了其他三种新型的流道结构的水冷散热器,即串并联流道结构、双串联流道结构和螺旋型流道结构。为了验证各种散热器的性能,通过运用仿真软件ANSYS Workbench对不同流道结构散热器进行CFD仿真分析。通过仿真可以得到散热器温度分布及散热器内流场分布,据此分析比较各散热器的性能,可以发现新型散热器综合性能比传统散热器要好,而均温性最好的是螺旋型流道结构散热器。最后,将综合性能较好且均温性最好的螺旋型流道结构散热器应用在实际的平面电机上,首先仿真分析散热器的在平面电机上的应用情况,然后设计并完成一套实验测试平台的搭建,研究螺旋型散热器的散热效率,实验获得了散热器在不同进口流速下的流动特性与散热性能,验证了本文提出的水冷散热系统的可行性。最终,对比分析了实验结果与仿真分析结果,两种结果保持了较好的吻合趋势,即验证了数值研究的合理性,又为水冷散热器在平面电机的应用提供了实验依据。
[Abstract]:With the continuous progress of science and technology, the high-tech manufacturing industry is developing towards high speed, precision and modularization, which puts forward strict requirements for the positioning accuracy and speed of machining equipment in the manufacturing field. Due to its rapid reaction and high sensitivity, it is widely used in planar two-dimensional positioning device. However, the plane motor has high heating power and high heat flux, so it can guarantee its normal operation and control accuracy. It is necessary to study the heat dissipation of the motor. The traditional cooling method of air cooling has been unable to meet the requirement of this kind of high heat flux, while the water cooling radiator has been widely studied because of its high convection heat transfer coefficient and high efficiency. In this paper, a set of water-cooled heat dissipation system is designed and manufactured for a moving coil permanent magnet synchronous plane motor. The research on the water cooling radiator, which is the core part of the cooling system, is of great significance to the design of the radiator and the improvement of the performance of the radiator. It is of practical significance to strengthen the temperature uniformity of planar motor. Firstly, this paper focuses on the research of water-cooled radiator, based on the study of the performance of traditional flow channel structure water-cooled radiator. That is, the traditional water-cooled radiator with series flow channel structure has high efficiency and high pressure loss in the flow channel, and requires higher pump, while the pressure loss of the flow channel of the traditional parallel water-cooled radiator is lower. However, the efficiency of heat dissipation is also low and the flow rate of water in the channel is not uniform. According to the literature investigation and scientific research experience, the method of how to improve the performance of radiator is summarized, so in order to improve the performance of radiator and enhance the uniform temperature of radiator, On the basis of this, three other kinds of water-cooled radiators with new flow channel structure, namely series-parallel flow channel structure, double series flow channel structure and spiral flow channel structure, are proposed to verify the performance of various radiators. By using the simulation software ANSYS Workbench to simulate the radiators with different flow channels, the temperature distribution and the flow field distribution in the radiators can be obtained, and the performance of the radiators is analyzed and compared. It can be found that the new type of radiator has better comprehensive performance than the traditional radiator, and the heatsink with the best average temperature is the spiral flow channel structure radiator. The spiral flow channel radiator with better comprehensive performance and the best average temperature is applied to the actual plane motor. Firstly, the application of the radiator in the plane motor is simulated and analyzed, and then a set of experimental test platform is designed and completed. The heat dissipation efficiency of the spiral radiator is studied. The flow characteristics and heat dissipation performance of the radiator at different inlet velocity are obtained experimentally, and the feasibility of the water-cooled heat dissipation system proposed in this paper is verified. The experimental results and the simulation results are compared and analyzed. The two results are in good agreement with each other, which verifies the rationality of the numerical research and provides the experimental basis for the application of the water-cooled radiator in the plane motor.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TM341

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