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设计一种由非线性控制方法实现的直接转矩控制矩阵变换器(DTC-MC)交流调速系统.首先构造基于扩张状态观测器(ESO)的自抗扰控制器(ADRC),取代传统DTC中的PI调节器,用来估计系统的扰动项并进行前馈补偿;然后运用多Lyapunov函数法对二阶ESO的稳定性进行分析.仿真结果表明,该方法提高了系统在输入电压非正常工况下的抗干扰能力和鲁棒性.
A direct torque control matrix converter (DTC-MC) AC speed regulation system based on non-linear control method is designed.An adaptive disturbance rejection controller (ADRC) based on Extended State Observer (ESO) is designed to replace traditional DTC The PI regulator is used to estimate the disturbance of the system and feed-forward compensation. Then, the stability of the second-order ESO is analyzed by using the Lyapunov function. The simulation results show that the proposed method can improve the stability of the system when the input voltage is abnormal Anti-interference ability and robustness.