海上半直驱永磁风力发电机电磁设计与温度场分析

Electromagnetic Design and Temperature Field Analysis of Offshore Semi-direct Drive Permanent Magnet Wind Turbine

以海上16 MW半直驱永磁风力发电机作为研究对象,基于有限元分析方法针对不等气隙条件下电磁特性、冷却结构设计及温度场仿真展开研究,结果表明优化后的电机能够合理地降低电机损耗,提高电磁性能,水套冷却和空水冷却相结合的冷却方式散热效果良好。通过型式试验,验证了电机设计的合理性。该电机的设计对海上永磁风力发电机大型化的发展发挥了重要作用。

Taking the offshore 16MW semi-direct drive permanent magnet wind turbine as the research object,this paper studied the electromagnetic characteristics,cooling structure design and temperature field simulation under unequal air gap conditions based on the finite element analysis method,and the results show that the optimized motor can reasonably reduce the motor loss,improve the electromagnetic performance,and the cooling method combining water jacket cooling and air water cooling has good heat dissipation effect.Through the type test,the rationality of the motor design was verified.The design of this motor has played an important role in the development of large-scale offshore permanent magnet wind turbines.