电励磁同步电机转子高频电流信号提取无速度传感器控制  

Speed sensorless control with extracting high-frequency current signal from rotor of electrically excited synchronous motor

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,江苏徐州221116

出　　处：《电机与控制学报》2015年第6期61-68,共8页Electric Machines and Control

基　　金：中国博士后科学基金(2013M531423)

摘　　要：建立了电励磁同步电机高频电压信号注入转子位置辨识模型,对比分析了定、转子绕组分别注入高频电压信号时包含转子位置信息的感应电流信号提取滤波器的设计问题。在此基础上,提出定子q轴高频电压注入,利用转子感应的高频电流信号辨识转子位置角方法。针对晶闸管相控整流供电的转子电流谐波含量分布特征,设计特定频率陷波器和高截止频率低通滤波器,实现转子有效高频电流信号快速提取。通过软件锁相环获取准确的转子位置和转速信息,实现了电励磁同步电机宽调速范围无速度传感器控制。实验结果表明所提的控制方案算法简单,易于实现,具有良好的低速性能和快速的转矩响应特性。Rotor position identification model based on high-frequency voltage signal injection of electri- cally excited synchronous motor was built, and the extraction filter design of induced current signal, which contains the rotor position information, with stator and rotor windings injecting into high-frequency voltage signal proposed was analyzed. On the basis of that, the stator q-axis high-frequency voltage injection was and motor＇ s high-frequency induction current was used to identify the rotor position angle. A specific frequency notch filter and high cut-off frequency low-pass filter were designed for the harmonic content distribution characteristics of rotor current supplied with thyristor controlled rectifier, to realize rapid extraction of rotor~ effective high-frequency current. The rotor position and speed information was obtained by using SPLL to realize wide range speed sensorless control of electrically excited synchronous motor. It＇s proven that the proposed control scheme, which has good low-speed performance and fast torque response, is simple and easy to achieve by experiment results.

关 键 词：电励磁同步电机 转子高频电流 转子位置估计 感应电流 陷波器 

分 类 号：TM341[电气工程—电机]