摘要
永磁同步电机参数在线辨识时由于辨识模型非满秩而存在耦合,为了实现参数解耦辨识,提出1种自适应仿射参数辨识算法,通过d轴注入瞬时弱磁电流信号,实现表贴式永磁同步电机定子电阻、电感及转子永磁体磁链参数在线解耦辨识。考虑逆变器死区时间、开关管开通关断延时及续流二极管饱和压降等产生的非线性电压降,构建不受非线性电压降影响的参数辨识模型。实验结果表明,所提方法能够提高电阻、电感及转子磁链的辨识精度,同时加快参数在线辨识收敛速度。
Due to the rank deficiency of identification models,parameter coupling exists in the online identification of a permanent magnet synchronous motor(PMSM).To realize the parameter decoupling identification,an adaptive parameter identification algorithm based on the affine projection algorithm is proposed.By injecting instantaneous flux-weakening current signal on the d axis,the online decoupling identification of parameters such as the stator resistance,inductance and rotor flux linkage of a surface mounted PMSM is realized.Considering the nonlinear voltage drop caused by the dead-zone time of an inverter,turn-on and turn-off delay of switches,freewheeling diode saturated voltage drop,etc.,a parameter identification model which is not affected by nonlinear voltage drop is constructed.Experimental results demonstrate that the proposed method can improve the identification accuracy of stator resistance,inductance and rotor flux linkage while speeding up the convergence rate of online identification.
作者
汪兆栋
胡瑄
梅立雪
王发良
WANG Zhaodong;HU Xuan;MEI Lixue;WANG Faliang(College of Machinery and Electronics Engineering,Jingdezhen University,Jingdezhen 333000,China)
出处
《电源学报》
北大核心
2025年第7期218-228,共11页
Journal of Power Supply
基金
国家自然科学基金资助项目(52175083)
江西省教育厅科技资助项目(GJJ2202403)。
关键词
表贴式永磁同步发电机
参数解耦辨识
非线性可观性
仿射算法
Surface mounted permanent magnet synchronous motor(PMSM)
parameter decoupling identification
nonlinear observability
affine projection algorithm
