动车组走行风冷牵引变压器研究与应用  

Research and application of natural air-cooled traction transformer for EMU

作　　者：晋军 JIN Jun(CRRC Zhuzhou Electric Co.,Ltd.,Zhuzhou,Hunan 412001,China)

机构地区：[1]中车株洲电机有限公司,湖南株洲412001

出　　处：《机车电传动》2024年第5期1-11,共11页Electric Drive for Locomotives

基　　金：国家重点研发计划项目(2022YFB4301202);中国国家铁路重点研发项目(N2022J018)。

摘　　要：为满足轨道交通行业安全、高效、绿色、经济发展对车载装备的需求,文章综合分析了牵引变压器的研究方向和走行风冷却技术的原理特征,提出走行风冷牵引变压器与传统强迫风冷牵引变压器相比更具应用优势和经济效益;通过系统研究走行风复杂流场分布、走行风冷却匹配技术、高阻抗低损耗设计、多维线路瞬态温升算法等关键技术,设计实现了国内首台动车组走行风冷牵引变压器,并通过现场实际应用验证了相关关键技术与产品综合性能。验证结果显示,与传统动车组强迫风冷牵引变压器相比,新型走行风冷牵引变压器可提升效率2%、降低损耗50%、降低噪声15 dB(A)、减少冷却系统维护工作约90%、减少全寿命周期成本约40%。该产品平台及技术的研究与应用将为轨道交通发展提供更加绿色高效、环境友好、高性价比的创新解决方案。The safe,efficient,environmentally-friendly,and economically-efficient development of the rail transit industry imposes increasingly demanding requirements on on-board equipment.This study comprehensively analyzed the research directions for traction transformers and the principles and characteristics of natural air cooling technology.The analysis revealed the superior application advan-tages and economic benefits of natural air-cooled traction transformers compared to traditional forced air-cooled designs.Through sys-tematic research on key technologies,such as the complex flow field distribution of natural air,matching mechanisms for natural air cool-ing,designs for high impedance and low loss,and algorithms for multi-dimensional line transient temperature rise,a natural air-cooled traction transformer for EMUs was designed and implemented as the first of its kind in China.The relevant key technologies and the comprehensive performance of the product were verified through on-site practical applications.Verification results show that,compared with traditional forced air-cooled traction transformers for EMUs,this new natural air-cooled traction transformer achieves a 2%im-provement in efficiency,a 50%reduction in losses,a decrease in noise levels by 15 dB(A),a reduction of approximately 90%in the maintenance workload for the cooling system,and a decrease in total lifecycle costs of about 40%.The research and application out-comes of this product platform and technology provide a more efficient,environmentally-friendly,and cost-effective innovative solution for the development of rail transit.

关 键 词：牵引变压器 走行风冷却 高效节能 低噪声 低维护成本 

分 类 号：U266.2[机械工程—车辆工程]