基于感应励磁的混合励磁同步发电机性能  

Performance of a Hybrid Excitation Synchronous Generator Based on Induced-Excitation

作　　者：朱常青[1] 王秀和[1] 张一峰 姜博 李家鹏[1] 沈一鸣[1] Zhu Changqing;Wang Xiuhe;Zhang Yifeng;Jiang Bo;Li Jiapeng;Shen Yiming(School of Electrical Engineering Shandong University Jinan 250061 China;Liaocheng Yijun Motor Technology Development Center Liaocheng 252000 China;State Grid Jiangsu Electric Power Maintenance Branch Company Xuzhou 221000 China)

机构地区：[1]山东大学电气工程学院,济南250061 [2]聊城一君电机技术开发中心,聊城252000 [3]国网江苏省电力公司检修分公司徐州运维分部,徐州221000

出　　处：《电工技术学报》2016年第A01期60-67,共8页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金资助项目(51177090)

摘　　要：针对感应励磁发电机结构简单但励磁容量有限,永磁同步发电机磁场难以调节的问题,研究了一种将二者励磁功能相结合的混和励磁发电机。气隙中大部分磁场由转子上的永磁体提供,当需要调磁时,通过定子直流绕组与转子上感应绕组的感应作用,在感应绕组上获得调节磁动势,实现发电机磁场的调节。转子上两种励磁源为并联关系,调磁磁路磁阻小,无电刷-集电环系统,保证了发电机的结构简单、可靠性。在原理分析的基础上,使用二维有限元法对电机的磁场调节能力和负载特性进行分析,并进行了样机实验。有限元分析与实验结果都表明,与同结构参数的永磁同步发电机相比,混合励磁同步发电机具有灵活磁场调节能力;而相对于同一定子励磁磁动势的感应励磁发电机,该发电机输出容量大幅度提高,克服了感应励磁不适用于大容量发电的问题。In view of simple structure but limited excitation capacity of induced-excitationsynchronous generator and some difficulties in magnetic field regulation of permanent magnetsynchronous generator, a novel hybrid excitation synchronous generator is analyzed in this paper. Thecurrent in rotor winding is produced by the double pole induction, which produce the magnetic field inthe generator with permanent magnet. Thus adjusting the size of the stator exciting current, theregulation of air gap magnetic field could be realized. Due to removal of the slip-ring system, themachine reliability could be improved greatly. Based on principle analysis, two-dimensional finiteelement method (FEM) is used to obtain magnetic field adjusting and no-load as well as loadcharacteristics. The simulation analysis results and those obtained in prototype tests both show thatwith the same structure parameters, the novel generator has more flexible magnetic field adjustmentability than permanent magnet synchronous generator. At the same time, the output of the hybridexcitation generator could be raise greatly than traditional induced-excitation synchronous generator.

关 键 词：感应励磁 混合励磁 同步发电机 无刷 二维有限元 

分 类 号：TM341[电气工程—电机]