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%。
Abstract
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
Key words
magnetic gear /
wind turbines /
finite element method（FEM） /
torque ripple /
double rotors
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参考文献
[1] HABASH R W Y, GROZA V, YANG Y, et al. Performance of a contrarotating small wind energy converter[J]. International scholarly research notices, 2011, 2011: 828739.
[2] KIM S K.A study on the design of a new power transmission for wind turbines[J]. Journal of mechanical science & technology, 2014, 28(3): 859-866.
[3] 高刚刚, 韦尧兵, 剡昌锋, 等. 新型双风轮合成增速箱的设计与仿真分析[J]. 太阳能学报, 2019, 40(4): 1133-1141.
GAO G G,WEI Y B,YAN C F,et al.Design and simulation of a new speed-increasing gearbox for wind turbine with double rotors[J]. Acta energiae solaris sinica, 2019, 40(4): 1133-1141.
[4] 王均刚, 杨士男, 刘燕德, 等. 行星齿轮主要设计理论与分析方法及均载特性综述[J]. 华东交通大学学报, 2019, 36(2): 111-118.
WANG J G, YANG S N, LIU Y D, et al.Overview on main design theory and load sharing characteristics of planetary gear trains[J]. Journal of East China Jiaotong University, 2019, 36(2): 111-118.
[5] 王均刚, 王观田, 刘燕德, 等. 风电行星齿轮的低滑动率椭圆摆线齿廓设计[J]. 太阳能学报, 2020, 41(12): 229-237.
WANG J G, WANG G T, LIU Y D, et al.Design of elliptic cycloid profile with low sliding rate for wind power planetary gear transmission[J]. Acta energiae solaris sinica, 2020, 41(12): 229-237.
[6] LI X Y, LI J L, ZHAO C Y, et al.Early gear pitting fault diagnosis based on bi-directional LSTM[C]//2019 Prognostics and System Health Management Conference, Qingdao, China, 2019.
[7] CHANG H C, BORGHESANI P, SMITH W A, et al. Application of surface replication combined with image analysis to investigate wear evolution on gear teeth: a case study[J]. Wear, 2019, 430-431: 355-368.
[8] HE H F, LIU H J, ZHU C C, et al.Study of rolling contact fatigue behavior of a wind turbine gear based on damage-coupled elastic-plastic model[J]. International journal of mechanical sciences, 2018, 141: 512-519.
[9] CAI C, QUAN S, WANG G Y, et al.Dynamic simulation of meshing force in broken tooth involute gear meshing process based on ADAMS[C]//2015 34th Chinese Control Conference, Hangzhou, China, 2015.
[10] GERBER S, WANG R J.Evaluation of a prototype magnetic gear[C]//2013 IEEE International Conference on Industrial Technology, Cape Town, South Africa, 2013.
[11] RASMUSSEN P O, ANDERSEN T O, JORGENSEN F T, et al.Development of a high-performance magnetic gear[J]. IEEE transactions on industry applications, 2005, 41(3): 764-770.
[12] ATALLAH K, CALVERLEY D S, HOWE D.Design, analysis and realization of a high-performance magnetic gear[J]. IEE proceedings-electric power applications, 2004, 151(2): 135-143.
[13] JING L B, GONG J, BEN T.Analytical method for magnetic field of eccentric magnetic harmonic gear[J]. IEEE access, 2020, 8: 34236-34245.
[14] UPPALAPATI K K, BIRD J Z.An iterative magneto mechanical deflection model for a magnetic gear[J]. IEEE transactions on magnetics, 2014, 50(2): 245-248.
[15] ZHANG Y J, ZHANG J D, LIU R H.Magnetic field analytical model for magnetic harmonic gears using the fractional linear transformation method[J]. Chinese journal of electrical engineering, 2019, 5(1): 47-52.
[16] AISO K, AKATSU K, AOYAMA Y.A novel reluctance magnetic gear for high-speed motor[J]. IEEE transactions on industry applications, 2019, 55(3): 2690-2699.
[17] 井立兵, 张廷, 黄章仚, 等. 磁力齿轮发展历程及可研究问题[J]. 机械传动, 2019, 43(1): 165-170.
JING L B, ZHANG T, HUANG Z X, et al.Development course and research question of magnetic gear[J]. Journal of mechanical transmission, 2019, 43(1): 165-170.
[18] JIAN L N, CHAU K T.A coaxial magnetic gear with halbach permanent-magnet arrays[J]. IEEE transactions on energy conversion, 2010, 25(2): 319-328.
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）
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