同时带交流和整流负载的三相同步发电机系统的运行稳定性  

Stability of 3-Phase Synchronous Generator with Simultaneous AC and Rectified DC Load

作　　者：杨青[1] 马伟明[1] 吴旭升[1] 孙俊忠[1] 

机构地区：[1]海军工程大学电力电子技术应用研究所,武汉430033

出　　处：《电工技术学报》2003年第5期5-10,共6页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金资助项目 ( 5 97770 75 0 2 770 2 0 )

摘　　要：参数匹配不当的同时带交流和整流负载的三相同步发电机系统会发生低频振荡而不能正常工作。为了对系统稳定运行的条件进行研究 ,在系统等效电路模型基础上 ,建立了该系统的线性化数学模型及相应的状态方程。使用劳斯判据得出了系统稳定运行的判据、直流侧等效动态电阻的计算公式和临界电阻的计算公式 ,揭示了系统“微变”稳定条件的物理实质。详细讨论了发电机参数、交轴稳定绕组及负载对系统运行稳定性的影响。If the parameters of 3 phase synchronous generator system with simultaneous AC and rectified DC load(SGSAD)do not match,low frequency oscillation will occur in the system and result is its breakdown.In order to study the conditions for the stable operation of the system,based on the equivalent models of SGSAD,the linearized model and the corresponding state space mathematical model are developed for the system.The criterion of operation stability for the system under small disturbance,including the formulae for calculating equivalent dynamic resistance and critical resistance,is obtained by using Routh criterion.A physical interpretation is given to the criterion of operation stability.The effects of generator parameters,quadrature axis stability winding and load on operation stability of the system are studied in detail.The comparison between the calculated and experimental results verified the validity of the mathematical model and analytical method.

关 键 词：同步发电机 整流器 反电势负载 交流负载 稳定性 

分 类 号：TM341[电气工程—电机]