航空油冷双凸极高压直流发电机绕组故障下的温升特性研究

  • 于立 ,
  • 李文豪 ,
  • 张健 ,
  • 张卓然 ,
  • 孙窈 ,
  • 胡光源
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  • 南京航空航天大学

收稿日期: 2025-04-09

  修回日期: 2025-07-17

  网络出版日期: 2025-07-18

基金资助

国家自然科学基金项目

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

  • YU Li ,
  • LI Wen-Hao ,
  • ZHANG Jian ,
  • ZHANG Zhuo-Ran ,
  • SUN Yao ,
  • HU Guang-Yuan
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Received date: 2025-04-09

  Revised date: 2025-07-17

  Online published: 2025-07-18

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。本文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。

本文引用格式

于立 , 李文豪 , 张健 , 张卓然 , 孙窈 , 胡光源 . 航空油冷双凸极高压直流发电机绕组故障下的温升特性研究[J]. 航空学报, 0 : 1 -0 . DOI: 10.7527/S1000-6893.2025.32094

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 structure as well as flux-regulation capability 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, analyzing the influence patterns of armature winding open-circuit and short-circuit faults on electromagnetic char-acteristics 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 ertreme temperature rise as a safety threshold, the fault-tolerant output capability of the machine under different faults is analyzed and evaluated in combination with thermal limit constraints, carrying out relevant verification experiments and providing theoretical and practical founda-tions for fault-tolerant operation in aircraft high-voltage DC power supply systems.

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