基于全局解析-模拟退火算法的外转子永磁风力发电机优化设计

以一台表贴式外转子永磁风力发电机作为样机建立了其全局解析模型并求解其磁场分布，并验证了所建模型的正确性，应用麦克斯韦张量法推导了齿槽转矩解析表达式。在此基础上，提出了一种全局解析-模拟退火算法对电机的齿槽转矩进行了优化设计。选取模型中极弧系数、定子槽口宽度、永磁体厚度及气隙长度作为优化变量，以齿槽转矩幅值作为优化目标对模型优化。仿真实验结果表明优化之后电机的齿槽转矩得到了明显的降低，电机性能得到了显著的提升，验证了该算法的有效性。

Optimization Design of External Rotor Permanent Magnet Wind Generator Based on Global Analytical-Simulated Annealing ER Algorithm

A global analytical model of a table-mounted external rotor permanent magnet wind generator was established and its magnetic field distribution was solved. The correctness of the model was verified, and the analytical expression of the cog torque was derived by using the Maxwell tensor method. On this basis, a global analytic - simulated annealing algorithm is proposed to optimize the design of motor cog torque. The pole arc coefficient, stator notch width ,permanent magnet thickness and the air gap length in the model were selected as optimization variables, and the cog torque amplitude was taken as optimization objective to optimize the model. Simulation and experimental results show that the motor cogging torque is significantly reduced after optimization, and the generator performance is significantly improved, which verifies the effectiveness of the algorithm