摘要
建立了永磁同步电机复矢量模型,应用复矢量根轨迹法和复矢量频域分析法对复平面等价形式的永磁同步电机电流调节器性能进行了研究。使用以基频为中心一定带宽内频率响应状况及抗扰强度函数的方法对电流调节器性能进行了分析,结果表明建立在同步坐标系内一般形式的比例—积分电流调节器性能随着外部干扰及基波频率升高而恶化。采用基于小波多尺度解析的PI调节器技术对其进行改进设计,理论分析及仿真结果表明,改进后的电流调节器较之传统的调节器具有较好的抑制噪声及抗干扰的能力。
The complex vector model for permanent magnet synchronous motors （PMSM） is presented and the performance of the equivalent complex current controller is investigated using complex vector root locus and complex frequency response functions. The frequency response function and dynamic stiffness function are used to analyze the performance of the proportional-integral current （PI） regulator in synchronous reference frame, and the results reveal that dynamic response deteriorates with the external disturbance injected and the fundamental excitation rising. The wavelet-based multi-resolution PI controller is introduced to improve its design. Both the theoretical and simulation results show that the improved regulator regulator has better ability to provide disturbance and noise rejection compared with the conventional PI
出处
《电工电能新技术》
CSCD
北大核心
2007年第4期26-30,80,共6页
Advanced Technology of Electrical Engineering and Energy
基金
陕西省自然科学基金资助项目(2006E132)
