航空推进用多转矩分量轴向磁通电机复合冷却系统研究OA
Research on Hybrid Cooling System for Multi-Torque-Component Axial Flux Motor for Aviation Propulsion Applications
航空电气化的发展对于推进电机的功率密度提出了更高要求,由此产生的高损耗密度对于电机热管理能力构成严峻挑战,成为影响系统可靠性与安全性的关键因素.本文针对一种新型多转矩分量轴向磁通电机的损耗特性展开研究,基于损耗分析结果,提出采用薄硅钢片与永磁体分块的损耗抑制方案,并设计了集成机壳水冷、空心轴水冷与端盖风冷的复合冷却系统.以峰值功率300 kW、额定功率180 kW、转速为2500 r/min的电机为例,进行三维瞬态温度场仿真,结果表明,该系统可有效将定子与转子温度分别控制在114 ℃与96 ℃以内,验证了所提出的复合冷却系统具有良好的散热能力,为航空电推进应用的高功率密度电机热管理设计提供了理论与技术参考.
The development of aircraft electrification demands higher power density in propulsion machines,which results in increased loss density,posing significant challenges to thermal management and threatening system reliability and safety.This paper investigates the loss characteristics of a novel axial flux machine with multiple torque components.Based on the loss analysis,a loss suppression strategy using thin silicon steel sheets and segmented permanent magnets was proposed.A composite cooling system combining housing water cooling,hollow shaft water cooling,and end-cap air cooling was also designed.A three-dimensional transient thermal simulation was conducted for a 300 kW peak power,180 kW rated power machine operating at 2500 r/min.The results show that the proposed system effectively limits stator and rotor temperatures to below 114 ℃ and 96 ℃,respectively.This demonstrates the good thermal performance of the cooling system and provides theoretical and technical support for thermal management design in high power density machines for electric propulsion.
刘文龙;贾少锋;梁得亮;何琪;段晓丽
西安交通大学电工材料电气绝缘全国重点实验室,陕西西安 710049西安交通大学电工材料电气绝缘全国重点实验室,陕西西安 710049西安交通大学电工材料电气绝缘全国重点实验室,陕西西安 710049中航工业陕西航空电气有限责任公司,陕西西安 710065中航工业陕西航空电气有限责任公司,陕西西安 710065
信息技术与安全科学
多转矩分量轴向磁通电机损耗特性损耗抑制策略复合冷却系统温度场分析
multi-torque-component axial flux motorloss analysisloss mitigation strategieshybrid cooling systemthermal field simulation
《航空科学技术》 2026 (4)
70-79,10
航空科学基金(20230040070001) Aeronautical Science Foundation of China(20230040070001)
评论