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航空发电机的体积小,电磁负荷高,发热问题更显重要。温度场计算是研究发电机发热的主要手段。以B747发电机为研究对象,介绍了主发电机的发热热源、不同部件的导热系数和各散热面的散热系数,建立了航空主发电机定子三维温度场计算的数学模型,利用ANSYS有限元软件对温度场进行求解,得到定子温度场分布,找出电机最高发热部位,并分析了电机的相关因素变化对电机温度场分布的影响,得出了一些有益的结论,并用实例验证了结论的正确性。
Aviator small size, high electromagnetic load, heating problems even more important. Calculation of the temperature field is the main means to study the generator heat. Taking B747 generator as the research object, the heat source of the main generator, the thermal conductivity of different components and the radiating coefficient of each radiating surface are introduced. The mathematical model for calculating the three-dimensional temperature field of the main generator is established. By using ANSYS finite element software The temperature field is solved, the temperature distribution of the stator is obtained, the highest heating position of the motor is found, and the influence of the change of the relevant factors of the motor on the temperature distribution of the motor is analyzed. Some useful conclusions are obtained, and the conclusions are validated by examples Sex.