高速实心转子感应电机的转子谐波涡流损耗的分离和提取  

Separation and Extract of Rotor Harmonic Eddy-Current Losses of High-Speed Solid-Rotor Induction Machine

作　　者：狄冲[1,2] 王路尧 鲍晓华 DI Chong;WANG Luyao;BAO Xiaohua(School of Electrical Engineering and Automation,Hefei University of Technology,Hefei 230009,China;National Engineering Laboratory of Energy-saving Motor&Control Technique,Anhui University,Hefei 230601,China)

机构地区：[1]合肥工业大学电气与自动化工程学院,合肥230009 [2]安徽大学高节能电机及控制技术国家地方联合工程实验室,合肥230601

出　　处：《微特电机》2023年第1期8-13,共6页Small & Special Electrical Machines

基　　金：中央高校基本科研业务费专项资金(JZ2022HGTA0322);安徽大学高节能电机及控制技术国家地方联合工程实验室开放课题(KFKT202201),国家自然科学基金(51977055)资助。

摘　　要：高速实心转子感应电机主要应用于高速压缩机、飞轮储能、航空航天等领域,具有广阔发展前景。和其他拓扑结构的转子相比,实心转子具有较强的端部效应,导致转子涡流损耗进一步加剧。针对高速实心转子感应电机的转子谐波涡流损耗的分离和提取问题,以一台380 V,1 MW,12000 r/min高速实心转子感应电机为主要研究对象,采用二维傅里叶分解方法,精确提取气隙磁场谐波特性,以虚拟永磁谐波电机模型为基础,反向构建气隙谐波磁场用以激励实心转子实现转子谐波涡流损耗的提取;结合混合激励法以及冻结磁导率法,进一步精确考虑了不同负载情况下由材料非线性导致的感应谐波涡流透入深度的变化。采用有限元建模方法,对比了采用混合激励法和冻结磁导率法提取的转子谐波涡流损耗以及感应涡流的分布。该方法为后续对转子谐波涡流损耗进行有效抑制提供了理论基础。High-speed solid-rotor induction machine is mainly used in the high-speed compressor,flywheel and aerospace applications,which may have a wide perspective of development.Compared to other rotor topologies,the solid rotor has a relatively strong eddy effect,which may cause higher rotor losses.A 380 V,1 MW,12000 r/min was taken as the main studying object to extract the solid-rotor eddy-current harmonic losses.2D fast Fourier transform was employed to extract the air-gap flux density precisely.And the air-gap flux density harmonics were reconstructed by the virtual permanent magnet harmonic machine model.The nonlinearity of the material property and the penetration depth of different harmonics were considered by the hybrid excitation and frozen permeability method.By using finite element analysis,the harmonic eddy-current losses were compared by hybrid excitation and frozen permeability methods.The induced eddy-current distribution was also obtained by the virtual permanent magnet harmonic machine model.The introduced method is capable of providing an effective evidence for mitigating the solid-rotor losses.

关 键 词：高速实心转子感应电机 二维傅里叶分解 虚拟永磁谐波电机模型 感应涡流 

分 类 号：TM346[电气工程—电机] TM355