电励磁双凸极发电机的电枢反应对外特性的影响分析  

Analysis on the influence of the armature reaction upon the doubly salient magnetic generator

作　　者：陈冉[1] 陈志辉[1] 段晴晴[1] 毛志鑫[1] 龚春英[1] 

机构地区：[1]南京航空航天大学江苏省新能源发电与电能变换重点实验室,江苏南京210016

出　　处：《电机与控制学报》2013年第4期86-91,共6页Electric Machines and Control

基　　金：江苏省科技支撑计划项目(BE2011179)

摘　　要：针对电励磁双凸极发电机(WFDSG)电枢反应较为复杂,带载后的电枢反应既有增磁作用又有去磁作用,导致磁链和电枢电流的波形严重畸变,不利于电机工作特性分析的情况,提出从磁能的角度分析电机工作特性的方法。根据双凸极电机的机电能量转换过程,在三相不控全桥整流发电方式(DSG2)下,针对1台12/8极电励磁双凸极发电机,分析在不同负载情况下磁链和电枢电流的变化特点和规律,从磁能的角度分析并揭示电机电枢反应作用对电机外特性的影响;分析双凸极发电机的功率流,根据仿真和实验数据进行磁能面积核算。核算结果表明,仿真和实验结果的误差在11%之内,验证了磁能分析方法的正确性。The armature reaction of wound-field doubly salient machine （WFDSG） is complex, and the effect reaction can both increase and decrease the magnetic field with load, causing the distortion of the flux leakage and armature current. Thus, the operating characteristics of the generator are difficult to ana- lyze. This paper analyzed the relationship of the motor magnetic energy, proposed the analysis idea of the external characteristics with the relationship curves of flux linkage and armature current. With this analy- sis method, the full bridge rectifier generating mode of a 12/8 pole WFDSG was discussed with the help of the finite element simulation. This research included the characteristics and discipline of the flux link- age and armature current changes under different loads, and the reason why the armature reaction influ- ences external characteristics. At last, the power flow was analyzed. Based on the simulation and experi- ments, the correctness of the analysis method was confirmed through the magnetic energy area checking. The check result shows that the error between simulation and experiment results is less than 11% , verif- ying the correctness of the analysis.

关 键 词：双凸极电机 磁能分析 全桥整流发电方式 外特性 电枢反应 

分 类 号：TP242.1[自动化与计算机技术—检测技术与自动化装置] TP273[自动化与计算机技术—控制科学与工程]