半直驱MW级轴向磁通永磁风力发电机电磁设计与分析  

Electromagnetic design and performance analysis of half direct-drive MW class axial flux permanent magnet generator for wind turbine

作　　者：朱军[1] 南怀春 刘瞳亮 郭向伟 刘鹏辉 杜少通[1] 钦金祥 Zhu Jun;Nan Huaichun;Liu Tongliang;Guo Xiangwei;Liu Penghui;Du Shaotong;Qin Jinxiang(School of Electrical Engineering and Automation,Henan Polytechnic University,Jiaozuo 454000,China;Henan Longyuan New Energy Development Co.,LTD,Zhengzhou 450012,China)

机构地区：[1]河南理工大学电气工程与自动化学院,河南焦作454000 [2]河南龙源新能源发展有限公司,河南郑州450012

出　　处：《可再生能源》2024年第7期929-936,共8页Renewable Energy Resources

基　　金：国家自然科学基金(U1504506);河南省科技攻关项目(212102210256,202102210093);河南省高等学校青年骨干教师培养计划项目(2020GGJS055);河南理工大学青年骨干教师培养计划项目(2018XQG-08)。

摘　　要：在大功率直驱式风力发电机设计中,针对轴向磁通永磁发电机径向尺寸大、后期维护成本高的问题,文章将轴向磁通永磁发电机设计为大功率半直驱式风力发电机。以2 MW半直驱轴向磁通永磁发电机为研究对象,研究其参数设计原则和方法。通过探究不同极对数对发电机输出性能的影响,确定满足设计目标的发电机优选方案。采用3D有限元分析法对发电机空载和额定负载工况下的气隙磁密、电压、电流波形以及输出功率、损耗和效率进行分析,验证发电机电磁设计的正确性,发电机效率可以达到97.79%,具有损耗小、效率高的优点。通过与现有发电机进行对比,文章所提出的半直驱MW级轴向磁通永磁发电机径向尺寸显著减小,且在轴向尺寸和齿槽转矩方面比现有径向磁通结构的大功率半直驱永磁发电机表现更优。In the design of high-power direct-drive wind turbines,this paper proposes to design axial flux permanent magnet generators as high-power half direct-driven wind turbines to address the issues of large radial dimensions and high maintenance costs in the later stage.Taking the 2MW semi direct drive axial flux permanent magnet generator as the research object,the parameter design principle and method are studied.By exploring the influence of different pole pairs on the output performance of the generator,the optimal scheme of the generator meeting the design goal is determined.The 3D finite element method is used to analyze the air gap flux density,voltage,current waveform,output power,loss and efficiency of the generator under no-load and rated load conditions,and verify the correctness of the electromagnetic design of the generator.The efficiency of the generator can reach 97.79%,which has the advantages of low loss and high efficiency.By comparing with generators in the existing research,it is concluded that the radial size of the MW half direct-driven axial flux permanent magnet generator proposed in this paper is significantly reduced,and it has better performance than the existing radial flux structure high-power semi direct drive permanent magnet generator in terms of axial dimension and cogging torque.

关 键 词：轴向磁通 大功率半直驱式 有限元分析 电磁特性 

分 类 号：TK81[动力工程及工程热物理—流体机械及工程]