考虑磁饱和效应的凸极同步电机参数辨识  

Parameter Recognition for Salient Pole Synchronous Generator Considering Magnetic Saturation Effect

作　　者：蔡然[1] 杨俊华[1] 杨梦丽[2] 张洁[3] 

机构地区：[1]广东工业大学自动化学院,广东广州510006 [2]河南省电力公司检修公司,河南郑州450052 [3]江西省电力设计院,江西南昌330096

出　　处：《广东电力》2014年第7期14-19,共6页Guangdong Electric Power

基　　金：国家自然科学基金资助项目(51307025;51377026);广东省自然科学基金项目(S2012040007895);广东高校优秀青年创新人才培养计划项目(2012LYM_0052)

摘　　要：针对凸极同步发电机的精确建模问题,研究同步发电机dq轴饱和的机理,采用动态饱和电感表述发电机电磁场非线性的特征,建立凸极同步发电机非线性磁场饱和模型,给出状态空间方程。通过凸极同步发电机的空载实验、转差法实验和静态频率响应实验,测得线性状态下发电机的电磁参数;以建立的数学模型和已测得的线性状态下的电磁参数为基础,辨识非线性状态下凸极同步发电机的电磁参数。研究结果表明所提方法能够有效辨识考虑磁饱和效应的凸极同步发电机参数,为精确控制提供更为可靠的依据。Aiming at precise modeling problem of salient pole synchronous generator,this paper studies mechanism of dq axis saturation of synchronous generator.By using dynamic saturation inductance,non-linear characteristic of electromagnetic field of the generator was expressed,non-linear magnetic field saturation model was established and state space equation was put forward.By no-load experiment,slip experiment and static frequency response experiment,electromagnetic parameters of the generator were measured under linear state.On the basis of established mathematical model and measured electromag-netic parameters,electromagnetic parameters of salient pole synchronous generator under non-linear state were able to be i-dentified.The study result showed that the proposed method was able to effectively identify parameters of salient pole syn-chronous generator which considered magnetic saturation effect and provide more reliable basis for precise control.

关 键 词：凸极同步发电机 参数辨识 磁场饱和 状态方程 

分 类 号：TM341[电气工程—电机] TM301.3