基于有效磁链的电励磁同步电机无速度传感器控制  

Speed Sensor-less Control of Electronically Excited Synchronous Motor Based on Active-Flux

作　　者：吴轩钦[1] 谭国俊[1] 何凤有[1] 李浩[1] 

机构地区：[1]中国矿业大学信息与电气工程学院,徐州221008

出　　处：《电工技术学报》2016年第6期81-90,共10页Transactions of China Electrotechnical Society

摘　　要：提出了一种新型的基于有效磁链电励磁同步电机无速度传感器宽调速范围控制方法。有效磁链矢量定义为转矩产生的磁链,对于电励磁同步电机,有效磁链矢量位于转子d轴,通过有效磁链幅值和相位的准确观测实现转子位置角和转速的辨识。在此基础上,针对具有阻尼绕组电励磁同步电机,为提高辨识准确度以获得优良的动态转矩特性,提出了考虑阻尼电流影响的有效磁链动态观测模型。同时考虑饱和效应影响,采用非线性磁链观测器获得准确的有效磁链矢量。实验结果表明所提控制方案算法简单,易于实现,且具有良好的控制性能和快速的转矩响应特性。A novel speed sensor-less control method of electronically excited synchronous motor, based on active-flux for wide speed range, was proposed. The active-flux vector is defined as the flux generated by the torque, and for electronically excited synchronous motor, the active-flux was on the d-axis of the rotor. Therefore, the identification of the rotor position angle and speed can be realized by the accurate observation on the active-flux＇s amplitude and phase. On this basis, the active-flux observation model taken into account the effect of damping current was proposed for electronically excited synchronous motor with damper winding, to improve the identification accuracy and obtain excellent dynamic torque characteristics. Meanwhile, the accurate active-flux was acquired though nonlinear flux observer, considering the saturation effect. The experimental results proved the proposed control scheme was simple and easy to implement, which has excellent control performance and fast torque response.

关 键 词：电励磁同步电机 无速度传感器 有效磁链 饱和效应 

分 类 号：TM301.2[电气工程—电机]