【摘要】 在MRAS理论基础上讨论了三种转速观测法,并将其中既能实现电机转速辨识又能实现定子电阻辨识的交互式模型参考自适应方法应用于异步电机无速度传感器直接转矩控制中。该方法能较好地解决电机参数变化对调速精度和系统稳定性影响的问题,仿真结果证明了该方案的有效性。更多还原

【Abstract】 Three kinds of speed observation methods are discussed based on (MRAS) in this paper. The mutual MRAS method for the rotor speed and stator resistance identification is proposed to implement a speed sensorless direct torque control of induction motor. The method can solve the problems of speed control accuracy and system stability under the influence of motor parameter variation. Simulation results show the feasibility of the proposed strategy.更多还原