大型水轮发电机定子径向通风沟与散热

Radial Duct and Heat Elimination in Stator of Hydrogenerator

建立了大型水轮发电机定子三维热传导方程，给出了与其相对应的混合边值问题的泛函和条件变分，采用传统计算定子径向通风沟风量的方法，并结合三维有限元法计算了大型水轮发电机定子最热段温度场，同时研究了齿部和轭部风速变化对电机定子绕组温升的影响。

in this paper, three-dimensional heat conduction equation for the stator of large hydrogenerator is set up. Functional and conditional variation for the corresponding hybrid boundery problem is alsopasented. The three-dimensional temperatme field of the hottest section of the stator is calculated by thecombination of traditional method for calculating the winding radial ventilation and finite-element method.The effect of the variation of the wind--speed in teeth and the yoke on the temperature rise of the statorwinding is also studied.