摘要
扁线电机的绕组交流损耗随着转速升高急剧增大,给电机运行效率与温升特性带来极大影响。本文以车用高速扁线电机为研究对象,对比分析了发卡绕组、槽内换位、连续波绕组和端部扭转换位等方案不同绕组拓扑结构的交直流损耗特性,综合考虑选定端部扭转换位绕组作为优选方案。通过加工试制原理验证样机,证明了有限元分析方法的有效性,并基于端部扭转换位绕组电机进行了优化设计。针对绕组换位引起的定子槽满率下降问题,提出了基于定子阶梯槽型的优化思路。最后,以车用电机全运行速域内的效率分布特性为基准,对比分析了阶梯槽端部扭转换位方案、端部扭转换位方案和发卡绕组方案的效率分布特性。结果表明,与端部扭转换位方案相比,阶梯槽端部扭转换位方案高速运行时的效率提升约0.2%到0.6%。
The AC winding losses in flat-wire motors increase sharply with increasing rotational speed,significantly impacting the motor’s operational efficiency and temperature rise characteristics.Focusing on high-speed flat-wire motors for automotive applications,the AC and DC loss characteristics of different winding topologies were compared and analyzed,including hairpin windings,in-slot transpositions,continuous wave windings,and end-twist transpositions.After comprehensive consideration,the end-twist transposition winding was selected as the preferred solution.A prototype was fabricated to validate the principles,demonstrating the effectiveness of the finite element analysis method.Further,an optimized design was conducted based on the motor with end-twist transposition windings.To address the decrease in stator slot fill factor caused by winding transposition,an optimization approach based on stator stepped slots was proposed.Finally,based on the efficiency distribution characteristics across the entire operating speed range of automotive motors,a comparative analysis was conducted on the efficiency distribution of the stepped-slot end-twist transposition scheme,the end-twist transposition scheme,and the hairpin winding scheme.The results show that compared to the end-twist transposition scheme,the stepped-slot end-twist transposition scheme improves efficiency by approximately 0.2%to 0.6%during high-speed operation.
作者
王斯博
孙明冲
龚海桂
杨永喜
蔡蔚
谢颖
尚静
郭守仑
WANG Sibo;SUN Mingchong;GONG Haigui;YANG Yongxi;CAI Wei;XIE Ying;SHANG Jing;GUO Shoulun(School of Electrical Engineering and Automation,Harbin Institute of Technology,Harbin 150001,China;Global R&D Center,China FAW Corporation Limited,Changchun 130013,China;School of Electrical and Electronic Engineering,Harbin University of Science and Technology,Harbin 150080,China;School of Mechanical Engineering,Beijing Institute of Technology,Beijing 100081,China)
出处
《电机与控制学报》
北大核心
2025年第1期25-36,共12页
Electric Machines and Control
基金
国家自然科学基金(U21A20145)
黑龙江省博士后科学基金(LBH-Z21064)
吉林省、长春市重大科技专项课题(20210301026GX)。
关键词
高速电机
定子绕组
交直流电阻
交流损耗分析
换位绕组
效率Map
high speed drive motor
stator winding
AC and DC resistance
AC loss analysis
transported winding
efficiency Map
