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基于自适应观测器和自抗扰控制的PMSM直接转矩控制 被引量:7

Direct Torque Control of PMSM Based on Adaptive Observer and ADRC
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摘要 提出一种新的自适应观测器,用于永磁同步电机直接转矩控制系统的定子磁链和定子电阻估计。该观测器利用静止坐标系下的电压模型估计定子磁链,采用转子坐标系下的电流模型估计定子电流,把定子电流估计误差通过增益矩阵作为反馈信号。定子电阻自适应律根据李亚普诺夫稳定性理论推出,观测器的增益矩阵采用极点配置方法得到,观测器的收敛性根据李亚普诺夫稳定性分析来保证。此外,采用自抗扰控制技术设计了速度控制器,该控制器能对负载扰动进行估计和补偿。仿真结果证明了所提自适应观测器的有效性和自抗扰控制器的抗负载扰动能力。 A new adaptive observer was proposed to estimate the stator flux and stator resistance in the direct torque controlled permanent magnet synchronous motor (PMSM) drive. The stator flux was estimated by using the motor voltage model in the stationary frame, and the stator currents were estimated by using the motor current model in the rotor frame. The current estimation errors were then used as feedback signals through a gain matrix. Stator resistance adaptive law was developed based on Lyapunov stability theory. The observer gain matrix was obtained by using the pole placement method. The stability of the adaptive observer was guaranteed by the Lyapunov stability analysis. In addition, a speed controller was designed based on active disturbance rejection control (ADRC) technique to estimate and compensate the load disturbance. Simulation results have confirmed both the effectiveness of the adaptive observer and the anti-load-disturbance performance of the active disturbance rejection controller.
作者 刘子建 吴敏 王春生 陈鑫 桂武鸣 LIU Zi-jian, WU Min, WANG Chun-sheng, CHEN Xin, GUI Wu-ming (School of Information Science and Engineering, Central South University, Changsha 410004, China)
出处 《系统仿真学报》 CAS CSCD 北大核心 2010年第11期2702-2707,共6页 Journal of System Simulation
基金 国家自然科学基金(60974045)
关键词 永磁同步电机 定子磁链 自适应观测器 自抗扰控制 直接转矩控制 permanent magnet synchronous motor stator flux adaptive observer active disturbance rejection control direct torque control
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