高速永磁同步电动机铁耗分析  

Analysis of iron losses of high-speed permanent magnet synchronous motor

作　　者：戈宝军[1] 罗前通 王立坤[1] 陶大军[1] 吕飞 窦庆鹏 GE Bao-jun;LUO Qian-tong;WANG Li-kun;TAO Da-jun;Lü Fei;DOU Qing-peng(National Engineering Research Center of Large Electric Machines and Heat Transfer Technology,Harbin University of Science and Technology,Harbin 150080,China;State Grid Huaian Power Supply Company,Huaian 223001,China;State Grid Binhai County Power Supply Company,Yancheng 224599,China;State Grid Taizhou Power Supply Company,Taizhou 225315,China)

机构地区：[1]哈尔滨理工大学大型电机电气与传热技术国家地方联合工程中心,哈尔滨150080 [2]国网淮安供电公司,江苏淮安223001 [3]国网滨海县供电公司,江苏盐城224599 [4]国网泰州市供电公司,江苏泰州225315

出　　处：《电机与控制学报》2020年第4期32-39,共8页Electric Machines and Control

基　　金：国家自然科学基金(51777048,51907042);黑龙江省高校科技成果研发培育项目(TSTAU-R2018004,TSTAU-C2018002);黑龙江省普通高校基本科研业务费专项基金(JMRH2018XM03,LGYC2018JC028);中国博士后科学基金(2018T110270,2017M620109);黑龙江省普通本科高等学校青年创新人才培养计划(UNPYSCT-2018212);黑龙江省博士后资助项目(LBH-Z17041)。

摘　　要：为分析高速永磁同步电动机定子各区域的铁耗分布情况,以一台额定功率为250 k W、额定转速为67 002 r/min的高速永磁同步电机为例,建立高速永磁同步电机的二维有限元计算模型,对定子区域进行划分,研究一个周期内各个区域径向磁密和切向磁密的变化规律,采用不同的铁耗计算模型计算出定子铁心各区域铁耗的分布特性,将定子铁耗计算结果与有限元计算结果相比较,并进一步分析高速永磁同步电机的铁耗密度分布特点。计算结果表明,高速永磁同步电机稳定运行在较高的频率时,定子铁心中的涡流损耗占总铁心损耗的比重最大,附加损耗占比最小。当考虑旋转磁场和谐波分量的影响时,定子铁心损耗的大小明显高于仅考虑交变磁场影响时的损耗,更接近有限元计算结果。虽然定子齿顶的铁耗最小,但该区域的损耗密度最大,此外,定子铁心的各个区域还存在大量的谐波铁耗。此研究可为后续高速永磁同步电机设计提供一定参考。In order to analyze the distribution of iron loss in each region of stator of high-speed permanent magnet synchronous motor,a two-dimensional permanent element model of high-speed permanent magnet synchronous motor is established by taking a high-speed permanent magnet synchronous motor rating67 002 r/min,at 250 kW for example. The regional division of the stator was carried out to study the variation law of radial flux density and tangential flux density in each region in a cycle,the distribution characteristics of iron loss in each area of stator core were calculated by using different iron loss models,the calculation results of stator iron loss were compared with those of finite element method,and the distribution characteristics of iron loss density of high speed permanent magnet synchronous motor were further analyzed. The results show that when the high-speed permanent-magnet synchronous motor operates stably at a higher frequency,the eddy current loss in the stator core accounts for the largest proportion of the total core loss,and the additional loss accounts for the smallest proportion. When considering the effect of rotating magnetic field and harmonic component on stator core loss,the calculation results of stator loss are obviously higher than those of only considering the effect of alternating magnetic field,and the results are close to the finite element calculation results. Although the iron consumption of stator tooth top is minimum,the loss density is the largest in this region. In addition,there is a great deal of harmonic iron loss in each region of stator core. This research can provide a reference for the design of high-speed permanent magnet synchronous motor.

关 键 词：高速 永磁同步电机 旋转磁场 谐波 铁耗 附加损耗 

分 类 号：TM315[电气工程—电机]