Winding mechanical response characteristics of doubly-fed induction generator under air gap eccentricity fault

doi:10.3969/j.issn.1000-1565.2025.06.001

Abstract

Abstract: The unbalanced magnetic pull caused by the air gap eccentricity fault of doubly-fed induction generator will aggravate the vibration of stator and rotor. The end winding of the generator is less constrained and is more prone to vibration and wear. In order to further improve the winding deformation rule under doubly-fed induction generator fault, the electromagnetic force variation rule and mechanical response characteristics of stator windings under doubly-fed induction generator air gap eccentricity fault are studied in this paper. Firstly, the electromagnetic force under normal working conditions and eccentricity fault are theoretically derived, considering tooth effect, and then the mechanical response characteristics of end winding are analyzed. Then, by using the Maxwell and Workbench platform in Ansys software, electromagnetic-structural coupling simulation was conducted to study the mechanical characteristics of the winding under eccentricity fault conditions.The research results can provide reference- DOI:10.3969/j.issn.1000-1565.2025.06.001双馈发电机气隙偏心故障下绕组力学响应特性绳晓玲¹,苑素玲¹,韩旭超²,万书亭¹(1.华北电力大学电力机械装备健康维护与失效预防河北省重点实验室,河北保定 071003;2.鹤岗市市场监督管理局,黑龙江鹤岗 154100)摘要:双馈发电机气隙偏心故障产生的不平衡磁拉力会使定转子振动加剧,发电机端部绕组约束较少,更易产生振动及磨损.为了进一步完善双馈发电机故障下绕组形变规律,本文对双馈发电机气隙偏心故障下定子绕组力学响应特性进行了研究.首先推导考虑齿槽效应时双馈发电机正常工况和偏心故障下的电磁力,并在此基础上分析了端部绕组的力学响应特性;然后利用Ansys软件中的Maxwell和Workbench平台进行电磁-结构耦合仿真,研究偏心故障下的绕组力学响应特性.研究结果可为掌握双馈发电机气隙偏心故障下的电磁力特性、绕组力学响应特性以及绕组形变及磨损规律提供借鉴.关键词:双馈发电机;气隙偏心;绕组;力学响应中图分类号:TM315 文献标志码:A 文章编号:1000-1565(2025)06-0561-09Winding mechanical response characteristics of doubly-fed induction generator under air gap eccentricity faultSHENG Xiaoling¹, YUAN Suling¹, HAN Xuchao², WAN Shuting¹(1. Hebei Key Laboratory of Electric Machinery Health Maintenance & Failure Prevention, North China Electric Power University, Baoding 071003, China; 2. Hegang Market Supervision and Administration Bureau, Hegang 154100,China)Abstract: The unbalanced magnetic pull caused by the air gap eccentricity fault of doubly-fed induction generator will aggravate the vibration of stator and rotor. The end winding of the generator is less constrained and is more prone to vibration and wear. In order to further improve the winding deformation rule under doubly-fed induction generator fault, the electromagnetic force variation rule and mechanical response characteristics of stator windings under doubly-fed induction generator air gap eccentricity fault are studied in this paper. Firstly, the electromagnetic force under normal working conditions and eccentricity fault are theoretically derived, considering tooth effect, and then the mechanical response characteristics of end winding are analyzed. Then, by using the Maxwell and Workbench platform in Ansys software, electromagnetic-structural coupling simulation was conducted to study the mechanical characteristics of the winding under eccentricity fault conditions.The research results can provide reference- 收稿日期:2025-06-10;修回日期:2025-09-03 基金项目:国家自然科学基金项目(52275109);河北省自然科学基金项目(E2022502007);河北省高等学校自然科学研究项目(ZC2024033) 第一作者:绳晓玲(1983—),女,华北电力大学副教授,主要从事风力发电机运行控制及故障诊断方向研究.E-mail:sssxlyc@163.com 通信作者:苑素玲(1971—),女,华北电力大学讲师,主要从事机械装备故障诊断与监测方向研究.E-mail:455603448@qq.com 第6期绳晓玲等:双馈发电机气隙偏心故障下绕组力学响应特性河北大学学报(自然科学版) 第45卷for understanding the electromagnetic force characteristics, mechanical response characteristics of windings, as well as the deformation and wear laws of windings under the air gap eccentricity fault of doubly-fed induction generator.

Key words: doubly-fed induction generator, air gap eccentricity, winding, mechanical response

CLC Number:

TM315

SHENG Xiaoling, YUAN Suling, HAN Xuchao, WAN Shuting. Winding mechanical response characteristics of doubly-fed induction generator under air gap eccentricity fault[J]. Journal of Hebei University(Natural Science Edition), 2025, 45(6): 561-569.

References

[1] JOYCE L, FENG Z. Global wind report 2024[R]. Brussels: Golbal Wind Energy Council, 2024: 139-149.
[2] 白望望,张中丹,张耀忠,等.基于转子暂态电流的双馈风电机组转子电压动态补偿控制[J].河北大学学报(自然科学版), 2025,45(1): 20-33. DOI: 10.3969/j.issn.1000-1565.2025.01.003.
[3] 庞彬,周紫烨,齐晓帆,等.双馈异步风力发电机转子匝间短路故障振动特性分析[J].河北大学学报(自然科学版), 2024,44(1): 9-16. DOI: 10.3969/j.issn.1000-1565.2024.01.002.
[4] 马宏忠,李思源.双馈异步风力发电机气隙偏心故障诊断研究现状与发展[J].电机与控制应用, 2018,45(3): 117-122. DOI:10.3969/j.issn.1673-6540.2018.03.022.
[5] ARTIGAO E, HONRUBIA-ESCRIBANOA, GÓMEZ-LÁZARO E. In-service wind turbine DFIG diagnosis using current signature analysis[J]. IEEE Trans Ind Electron, 2020, 67(3): 2262-2271. DOI: 10.1109/TIE.2019.2905821.
[6] LIU G W, YU W B, WANG X D, et al. Analysis of electromagnetic characteristics of typical faults in permanent magnet wind generators[J]. Glob Energy Interconnect, 2023, 6(1): 103-114. DOI: 10.1016/j.gloei.2023.02.009.
[7] 何玉灵,付滋翔,代德瑞,等.轴向气隙非对称故障对发电机电磁转矩特性的影响[J].河北大学学报(自然科学版), 2025,45(1): 1-9. DOI: 10.3969/j.issn.1000-1565.2025.01.001.
[8] 何玉灵,郑文杰,徐明星.双馈异步风力发电机气隙静偏心下电磁转矩特性分析[J].大电机技术, 2023(4): 21-27. DOI:10.3969/j.issn.1000-3983.2023.04.003.
[9] 胡刚刚,唐贵基,葛海涛,等.双馈异步风力发电机气隙偏心故障下定子振动特性分析及监测[J].河北电力技术, 2022,41(6): 10-15. DOI:10.3969/j.issn.1001-9898.2022.06.004.
[10] 王萱,万书亭,张伯麟,等.考虑转速波动时的双馈风力发电机气隙静偏心故障下定子振动特性分析[J].太阳能学报, 2025,46(5): 448-457. DOI: 10.19912/j.0254-0096.tynxb.2024-0028.
[11] 何玉灵,孟庆发,仲昊,等.发电机气隙静偏心故障前后定子绕组电磁力的对比分析[J].华北电力大学学报(自然科学版), 2017, 44(5): 74-80. DOI:10.3969/j.ISSN.1007-2691.2017.05.11.
[12] 仲昊.气隙偏心与匝间短路复合故障下的绕组受力分析[D].保定:华北电力大学, 2017.
[13] 张钰阳.气隙静偏心与定子匝间短路复合下短路因素对绕组受载的影响[D].保定: 华北电力大学, 2019.
[14] 闫雪超.大型汽轮发电机转子偏心磁场分析与电磁力计算[D].哈尔滨: 哈尔滨理工大学, 2013.
[15] 鲍晓华,王春雨.双斜槽感应电机气隙偏心时的径向电磁力分析[J].电机与控制学报, 2019,23(4): 75-82. DOI: 10.15938/j.emc.2019.04.009.
[16] 蒋宏春,伍世良,何玉灵,等.气隙静态偏心故障下汽轮发电机励磁绕组受载及其力学响应分析[J].电机与控制应用, 2016, 43(8): 46-50, 62. DOI:10.3969/j.issn.1673-6540.2016.08.009.
[17] TANG G J, CHENG L H, SUN K, et al. Time-frequency characteristics of electromagnetic force and vibration in synchronous generator end winding consideration load variation[J]. Int J Appl Electromagn Mech, 2025, 77(4): 233-248. DOI: 10.1177/13835416251319190.
[18] JIANG H C, TANG G J, HE Y L, et al. Effect of static rotor eccentricity on end winding forces and vibration wearing[J]. Int J Rotating Mach, 2021, 2021(1): 5554914. DOI: 10.1155/2021/5554914. (