新型双风轮风力机大传动比两级同轴磁性齿轮传动的电磁性能分析  

ANALYSIS OF ELECTROMAGNETIC PERFORMANCE OF TWO-STAGE COAXIAL MAGNETIC GEARS TRANSMISSION WITH LARGE GEAR RATIO APPLIED TO DOUBLE WIND TURBINE

作　　者：王均刚 张杰 钱立群 张斌 Wang Jungang;Zhang Jie;Qian Liqun;Zhang Bin(Key Laboratory of Conveyance Equipment,Ministry of Education,East China Jiaotong University,Nanchang 330013,China)

机构地区：[1]华东交通大学载运工具与装备教育部重点实验室,南昌330013

出　　处：《太阳能学报》2023年第7期419-426,共8页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金(51765020);江西省自然科学基金资助项目(20161BAB206153)。

摘　　要：风电产业发展迅速,为了降低成本、增强企业竞争力,风力发电设备正朝着高功率、高性能、高可靠性方向发展,目前主流风力机普遍采用单风轮加机械式风电齿轮箱传动形式,无法满足风力机风能的高效利用和低传动故障率的需求。针对上述问题,该文提出双风轮两级同轴磁性齿轮新型传动方式,与机械齿轮相比,两级同轴磁性齿轮能实现非接触和大传动比传动,并具有低振动、噪声小、无需润滑以及低维护成本等优点。该文分析了两级同轴磁性齿轮结构和工作原理,建立两级同轴磁性齿轮的模型,分析了第一级和第二级同轴磁性齿轮的两级之间的磁场分布、气隙的磁通量密度、空间谐波分量、静态转矩和稳态运行转矩。研究表明,两级同轴磁性齿轮传动的第一级和第二级的转矩波动差异较大,第二级内转子转矩脉动幅值比第一级大41.68%,第二级外转子转矩脉动幅值比第一级小0.96%。针对第二级转矩波动较大的情况做了改进,结果表明,改进后的磁性齿轮内转子波动幅值降低了48.27%。The wind power industry is developing rapidly.In order to reduce costs and enhance the competitiveness of enterprises,wind power generation equipment is developing towards high power,high performance and high reliability.At present,the main wind turbines generally adopt the transmission form of single rotor with mechanical wind power gearbox,which can not meet the needs of efficient utilization of wind energy and low transmission failure rate of wind turbines.In view of the above problems,this paper proposes a new transmission mode of two-stage coaxial magnetic gear with double-rotor,compared with mechanical gears,the two-stage coaxial magnetic gear can achieve non-contact and large transmission ratio transmission,and has the advantages of low vibration,low noise,no lubrication and low maintenance costs.Based on the differential two-stage coaxial magnetic gear structure and its working principle,the finite element method is used to simulate the electromagnetic performance of the two-stage coaxial magnetic gear.Futhermore,the electromagnetic performance of the two stages of the proposed magnetic gear are compared.The results show that there is a significant difference in torque ripple between the first and second stages of the two-stage coaxial magnetic gear.The torque ripple of the second stage is more dramatic than that of the first stage.The torque ripple amplietude of the inner rotor of the second stage is 41.68%larger than that of the second stage.The torque ripple amplietude of the outer rotor of the first stage is 9.6‰larger than that of the second stage.Improvements were made to reduce the large torque ripple in the second stage,and the results showed that the torque ripple of the inner rotor was reduced by 48.27%after the improvements.

关 键 词：磁性齿轮 风力机 有限元法 转矩波动 双风轮 

分 类 号：TK83[动力工程及工程热物理—流体机械及工程]