一种新型无刷励磁机的三维热流场分析

发布时间：2018-02-01 07:57

本文关键词： 无刷励磁机定转子三维热流场整流装置温度场　出处：《中国电机工程学报》2014年27期 　论文类型：期刊论文

【摘要】：为了研究无刷励磁机内部定子、转子、旋转整流盘、外罩中的流场、温度场的特点,确保设备安全稳定运行,以某新型无刷励磁机相对地面结构的1/2为物理模型,基于流体动力学原理,采用有限体积法对计算域内的三维热流场进行了数值模拟与分析。分析结果表明,整流盘与定转子之间的空气区以负压为主,整流盘区空气不能顺利流出,空气温度接近二极管许用上限。与实验测量值相比,温度与流量的计算误差均小于5.9%,结果较准确,为进一步优化该励磁机风路结构提供理论基础。
[Abstract]:In order to study the characteristics of the flow field and temperature field in the inner stator, rotor, rotary rectifier and outer cover of the brushless exciter, ensure the safe and stable operation of the equipment. Taking a new brushless exciter 1/2 relative to the ground structure as the physical model, based on the principle of fluid dynamics. The finite volume method is used to simulate and analyze the three-dimensional heat flow field in the computational domain. The results show that the air region between the rectifier disk and the stator and rotor is dominated by negative pressure, and the air in the rectifier disk cannot flow out smoothly. The air temperature is close to the allowable upper limit of the diode. Compared with the experimental measurements, the calculation error of temperature and flow rate is less than 5.9, and the results are more accurate, which provides a theoretical basis for further optimizing the structure of the exciter air path.
【作者单位】：哈尔滨理工大学机械动力工程学院;
【基金】：国家自然科学基金项目(50976027) 哈尔滨市科技创新人才基金项目(2013RFXXJ032)~~
【分类号】：TM341
【正文快照】： 0引言无刷励磁机是向同步电动机的磁场供给直流电的旋转电机。励磁机的电枢中产生的交流电流,通过转轴上配置的多根连接导体流入整流装置,将交流转换成直流。无刷励磁机不仅仅是实现能量转换必不可少的环节,对同步电机的安全、高效率持续运行也尤为重要。无刷励磁同步电动机开

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