CAJ | 학술논문

本文针对基于级联逆变器的异步电机无速度传感器矢量控制，研究了一种在两相旋转坐标系下实现的模型参考自适应系统（MRAS）来辨识异步电机的转速。为了避免在两相静止坐标系下模型参考自适应系统（MRAS）的固有缺陷，该方法的参考模型和可调模型分别由改进的转子磁链电压模型和两相旋转坐标系下转子磁链电流模型构成。仿真和实验结果表明，该矢量控制系统能较好地估计电机的磁链及转速，在启动、调速、稳态运行时均具有良好的静动态性能。
본문침대기우급련역변기적이보전궤무속도전감기시량공제，연구료일충재량상선전좌표계하실현적모형삼고자괄응계통（MRAS）래변식이보전궤적전속。위료피면재량상정지좌표계하모형삼고자괄응계통（MRAS）적고유결함，해방법적삼고모형화가조모형분별유개진적전자자련전압모형화량상선전좌표계하전자자련전류모형구성。방진화실험결과표명，해시량공제계통능교호지고계전궤적자련급전속，재계동、조속、은태운행시균구유량호적정동태성능。
According to speed sensorless vector control of asynchronous motor based on cascaded inverter, a model reference adaptive system(MRAS)implemented in two axis rotating reference frame was studied to identify the rotor speed of an asynchronous motor. To eliminate the inherent limitations of MRAS in two axis stationary reference frame, the reference model and adjustable model used in this MRAS scheme are composed of an advanced rotor flux voltage model and rotor flux current model in two axis rotating reference frame respectively. Simulation and experimental results show that the vector control system can estimate the flux and speed with good accuracy,and run with good static and dynamic performance at time of its starting, speed regulating and steady-state operating.