20MW级海上集成型永磁同步风力发电机设计及分析  

Design and Analysis of 20MW Offshore Integrated Permanent Magnet Synchronous Wind Generator

作　　者：段志强 王晓明 米兴社 陈晓杰 杨杰 刘学忠[3] 梁杰省 王紫媛 DUAN Zhiqiang;WANG Xiaoming;MI Xingshe;CHEN Xiaojie;YANG Jie;LIU Xuezhong;LIANG Jiesheng;WANG Ziyuan(CRRC Yongji Electric Co.,Ltd.,Xi'an 710016,China;CRRC Xi'an Yonge Jieli Wind Energy Co.,Ltd.,Xi'an 710018,China;State Key Laboratory of Electrical Insulation and Power Equipment(Xi'an Jiaotong University),Xi'an 710049,China)

机构地区：[1]中车永济电机有限公司,西安710016 [2]西安中车永电捷力风能有限公司,西安710018 [3]电力设备电气绝缘全国重点实验室(西安交通大学),西安710049

出　　处：《大电机技术》2024年第6期28-34,共7页Large Electric Machine and Hydraulic Turbine

基　　金：陕西省2023年重点研发计划项目(2023-YBGY-378)。

摘　　要：对于全球最大功率20MW级的海上集成型风力发电机,存在低短路转矩、低转矩脉动、低振动、低噪音设计,集成设计,轻量化设计,高功率密度电机散热难等诸多技术难点。通过对气隙、槽宽、槽数及多套绕组的联线方式等电磁方面的创新设计,重点对负载及短路工况的电磁特性进行分析,获得最优电磁方案。从强度校核、模态分析等结构方面对发电机进行了轻量化设计。采用磁-固-流-热等多物理场仿真方法,对发电机散热系统进行设计,满足高功率密度的散热要求。通过型式试验验证,发电机额定功率20.32MW,效率98.28%,绕组温升控制在99K,整机重量31t,功率密度达到655W/kg,各项性能指标均达到国际领先水平。For the world's largest power 20MW offshore integrated wind turbine,there are many technical difficulties,such as low short-circuit torque,low torque pulsation,low vibration,low noise,integrated design,lightweight design,and heat dissipation of high power density generator.Through the innovative design of electromagnetic aspects,such as air gap,slot width,number of slots,and linkage of multiple sets of windings,we focus on the analysis of the electromagnetic characteristics of load and short-circuit conditions to obtain the optimal electromagnetic scheme.The lightweight design of the generator is carried out in terms of strength checking,modal analysis and other structural aspects.The generator heat dissipation system is designed by adopting multi-physical field simulation methods,such as magnetic-solid-fluid-thermal,to meet the heat dissipation requirements of high power density.Verified by the test,the generator has a rated power of 20.32MW,an efficiency of 98.28%,the temperature rise of the windings is controlled at 99K,the weight of the whole machine is 31t,and the power density reaches 655W/kg,with all the performance indexes reaching the international leading level.

关 键 词：20MW 全球最大功率 高功率密度 集成型 多绕组优化设计 温升计算 风力发电机 海上发电 

分 类 号：TM315[电气工程—电机]