高速永磁电机表贴式转子碳纤维护套分析  

Analysis of the carbon fiber sheath stuck on the surface of rotors in high-speed permanent magnet motors

作　　者：赵英男 李慧颖 尹高冲 侯帅昌 ZHAO Yingnan;LI Huiying;YIN Gaochong;HOU Shuaichang(CRRC Advanced Composites Co.,Ltd.,Qingdao,Shandong 266000,China)

机构地区：[1]中车成型科技(青岛)有限公司,山东青岛266000

出　　处：《轨道交通材料》2025年第1期21-25,共5页Materials for Rail Transportation System

基　　金：中车重点项目(2023CKB423)。

摘　　要：基于大张力缠绕技术制备的碳纤维复合材料转子护套可以有效地确保转子安全稳定运行。文章分别从材料选型、成型工艺等方面对某高速永磁电机表贴式转子碳纤维护套进行方案设计,同时基于ABAQUS软件的等效温度场法对其进行强度验证,计算大张力缠绕方案下的预应力场以及在高速旋转时碳纤维护套的强度,结果表明:碳纤维护套最大环向拉应力的极限工况为高速热态,即在200℃+7200 r/min的额定转速下,碳纤维护套最外层将承受1587 MPa的环向应力,远小于所用T800碳纤维的强度极限值,可以满足使用要求;为确保护套能够提供足够的预紧压力,同时护套与永磁体处于强度安全范围内,采用等效温度场法计算得到所需缠绕张力为158.7 N。High speed permanent magnet motors usually generate enormous centrifugal force when running at high-speed,consequently leading to possible damage to the permanent magnets.The carbon fiber composite rotor sheath prepared on the basis of high-tension winding techniques can effectively ensure the safe and stable rotor operation.This article proposes a conceptual design of the stick-on-the-surface carbon fiber rotor sheath for a high-speed permanent magnet motor from the perspective of material selection and molding process.At the same time,the equivalent temperature field method based on Abaqus software is used to verify its strength,and the pre⁃stress field under high tension winding condition and the strength of the carbon fiber sheath under high-speed rotation are calculated.The results show that the maximum circumferential tensile stress of the carbon fiber sheath is in the high-speed hot state,that is,at the rating of 200℃+7200 r/min,the outermost layer of the carbon fiber sheath will bear a circumferential stress of 1587 MPa,which is much lower than the strength limit value of T800 carbon fiber used,and can meet the operating requirements;in order to ensure that the protective cover can provide sufficient pretightening pressure and that the sheath and permanent magnet are kept within a safe range of strength,the required winding tension is 158.7 N calculated by applying the equivalent temperature field method.

关 键 词：碳纤维 高速永磁电机 转子护套 缠绕张力 有限元分析 

分 类 号：U264.1[机械工程—车辆工程] TM351[交通运输工程—载运工具运用工程]