基于永磁同步电机直接转矩复合型滑模控制器的设计

Design of Sliding-mode Direct Torque Controller Based on PMSM

文中针对传统直接转矩控制系统中PI算法对电机参数和负载变化敏感的不足,提出了一种复合滑模控制器,该控制器由一积分切换自适应滑模控制器并联一积分环节构成。经仿真验证,表明该方法能提高系统鲁棒性,在相同仿真条件下,比使用传统PI算法,使得转矩和转速的波动分别减小了15%和4%左右,从而证明了该方法的可行性。

The PI algorithm in the traditional direct torque system isn＇t sensitive enough to the variance of system parameter and load. a complex sliding-mode controller was proposed. The controller consists of adaptive sliding-mode based on integral switching and integral part. The results of computer simulation verify the new controller can improve robustness under the same simulation condition. The 15 % torque and around 4% velocity fluctuation has been reduced compared with the traditional PI algorithm, the effectiveness of the designed scheme is showed.