航空学报 > 2026, Vol. 47 Issue (1): 632094-632094   doi: 10.7527/S1000-6893.2025.32094

第二十七届中国科协年会专栏

航空油冷双凸极高压直流发电机绕组故障下的温升特性

于立, 李文豪, 张健(), 张卓然, 孙窈, 胡光源   

  1. 南京航空航天大学 自动化学院,南京 210016
  • 收稿日期:2025-04-09 修回日期:2025-05-09 接受日期:2025-06-27 出版日期:2025-07-21 发布日期:2025-07-18
  • 通讯作者: 张健 E-mail:cae-zj@nuaa.edu.cn
  • 基金资助:
    江苏省自然科学基金(BK20220908);国家自然科学基金(52207057)

Temperature rise characteristics of oil-cooled doubly salient high-voltage DC generator for aircraft application under winding fault

Li YU, Wenhao LI, Jian ZHANG(), Zhuoran ZHANG, Yao SUN, Guangyuan HU   

  1. College of Automation Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China
  • Received:2025-04-09 Revised:2025-05-09 Accepted:2025-06-27 Online:2025-07-21 Published:2025-07-18
  • Contact: Jian ZHANG E-mail:cae-zj@nuaa.edu.cn
  • Supported by:
    Jiangsu Provincial Natural Science Foundation(BK20220908);National Natural Science Foundation of China(52207057)

摘要:

多电/全电飞机对航空高压直流供电系统安全运行能力提出了严苛要求。电励磁双凸极电机由于转子结构坚固可靠,且具备故障下的调磁能力,作为航空高压直流发电机具有潜在应用优势。首先,介绍了油冷电励磁双凸极电机的结构与工作原理,分析了电枢绕组开路与短路故障对电磁特性及损耗分布的影响规律;其次,基于集中绕组热传导等效模型,构建了油冷电机三维温度场有限元分析模型,分析获得正常和故障工况下的温升特性;最后,以绕组极限耐温为安全阈值,结合热限制约束分析评估了不同故障下电机的容错输出能力并进行相关验证性实验,为航空高压直流供电系统故障容错运行提供了理论与实践依据。

关键词: 双凸极电机, 容错运行, 热损耗, 温升性, 温度场建模

Abstract:

More-electric/all-electric aircraft impose stringent requirements on the safe operation capability of aircraft high-voltage DC power supply systems. The doubly salient electro-magnetic machine, with its robust and reliable rotor structureand ability to regulate flux under fault conditions, exhibits potential application advantages as an aircraft high-voltage DC generator. This paper first introduces the structure and operating principle of the oil-cooled doubly salient electro-magnetic machine, and analyzes the influence patterns of armature winding open-circuit and short-circuit faults on electromagnetic characteristics and loss distribution. Subsequently, based on a lumped-winding thermal conduction equivalent model, a three-dimensional temperature field finite element analysis model for oil-cooled motors is established to investigate the temperature rise characteristics under normal and fault conditions. Finally, using the winding’s extreme temperature rise as a safety threshold, the fault-tolerant output capability of the machine under different faults is analyzed and evaluated through thermal limit constraints analysis and relevant verification experiments; thereby, providing theoretical and practical foundations for fault-tolerant operation in aircraft high-voltage DC power supply systems.

Key words: doubly salient electro-magnetic machine, fault tolerance, thermal loss, temperature rise characteristics, temperature field modeling

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