变频调速系统对牵引电机谐波损耗影响的研究  

Study on Influence of Frequency Control System on Harmonic Losses of Traction Motors

作　　者：佟来生[1] 吴广宁[1] 舒雯[1] 温凤香[1] 何恩广 

机构地区：[1]西南交通大学电气工程学院,成都610031 [2]株洲南车电机股份有限公司研究所,株洲412001

出　　处：《电力系统及其自动化学报》2005年第6期10-13,共4页Proceedings of the CSU-EPSA

基　　金：国家自然科学基金项目(50377035);霍英东教育基金项目(91060);清华大学电力系统及发电设备安全控制和仿真国家重点实验室开放课题基金

摘　　要：变频调速系统输出的脉宽调制波含有丰富的谐波,谐波引起附加损耗,使交流牵引电机运行温升增加,导致绝缘加速老化,缩短其运行寿命。文章利用M ATLAB软件建立了变频调速仿真系统,对影响变频牵引电机谐波损耗的逆变器参数进行了分析,并提出一种用谐波总损耗因数表征谐波损耗的方法。This paper focuses on the influence of frequency control system on harmonic losses of traction motors. Output of the in,fetter in frequency control system contains a great quantity of harmonics ,which will give rise to extra losses that are harmful to the insulation of traction motors. Using MATLAB,the frequency control equivalent model is developed based on the principle of sinusoidal pulse width modulation （SPWM）. The harmonic spectrum of steady-state operation is simulated using this model. The influence of the following inverter parameters is considered ：modulation index and switch frequency. HLF is defined and used to represent the harmonic losses.

关 键 词：逆变器 牵引电机 谐波损耗因数 电压谐波总畸变率 

分 类 号：TM343.2[电气工程—电机]