永磁同步电机系统的无速度传感器研究  

Research on speed sensorless of permanent magnet synchronous motor system

作　　者：张志伟[1] 张天一[1] 

机构地区：[1]天津大学电气与自动化工程学院,天津300072

出　　处：《传感器与微系统》2017年第2期32-34,共3页Transducer and Microsystem Technologies

摘　　要：为了提高永磁同步电机系统的抗干扰能力,提出一种无速度传感器方法,用于速度辨识。将滑模(SM)变结构控制与模型参考自适应系统(MRAS)方法相结合,选取电机本体作为参考模型,利用逆变器输出的电压和电流,构建基于磁链方程的可调模型,利用两模型误差运用SM变结构方法辨识速度。在Matlab仿真平台对无速度传感器方法进行了分析,研究结果表明:所提出的无速度传感器方法具有较好的动静态性能,可以实现对速度的准确辨识。In order to improve capacity of resisting disturbance of the permanent magnet synchronous motor system, a speed sensorless method is proposed for speed identification. Sliding mode （SM）variable structure control and the model reference adaptive system（MRAS） method are combined together. Through selecting the motor body as reference model and using the output voltage and current of the inverter, the adjustable model based on flux equation are established. The speed is identified based on the two model error, using SM variable structure method. In the Matlab simulation platform, the speed sensorless method is analyzed. The results show that the proposed sensorless method has better dynamic and static performance and can accurately identify speed.

关 键 词：永磁同步电机 滑模变结构 模型参考自适应系统 无速度传感器 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]