直接力矩控制是交流调速中一种新颖、有效的控制方法。首先介绍了异步电机的数学模型,在此基础上对直接力矩控制进行了理论分析,并介绍其磁通、力矩控制方法,给出磁通观测器和力矩观测器,同时也对无速度传感器的直接力矩控制作了简要介绍。关键词: 异步电机; 磁通观测器; 力矩观测器; 无速度传感器Abstract : The direct torque control (DTC) is a new,valid control strategy in AC drive. The mathmatics model of induction motor and control methods of the flux and torque are introduced. The flux observer and torque observer are proposed ,also the speed sensorless DTC.Key words : induction motor ; flux observer ; torque observer ; speed sensorless
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