基于2种滑模控制的矩阵变换器驱动感应电机转速辨识性能对比

Comparison of speed estimated performance of induction motor fed by matrix converter using two sliding model control methods

研究模型参考自适应转速辨识的基本原理辨识方法,利用李亚普诺夫稳定性理论推导出2种不同的滑模面的转速估计表达式,分析2种滑模控制的转速估计性能和系统的稳定性;对2种滑模控制在矩阵变换器驱动感应电机调速系统中的转速辨识性能进行仿真研究。研究结果表明:在该调速系统中,滑模控制方法Ⅱ(以转子磁链误差信号ε及其积分之和为滑模面)具有较好的动态响应速度、稳态精度和抗负载扰动能力。仿真结果与理论分析一致,证明了理论分析的正确性和方法的可行性。

The basic principle of model referenced adaptive system（MRAS） speed estimated method was analyzed. Two sliding model control（SMC） methods based on different sliding model planes were researched and the speed estimated mathematical models were derived by using Lyapunov stability method respectively. The speed estimated performances and system stability by two sliding model control methods were analyzed. The speed estimated performances of two sliding model control methods applied to induction motor fed by matrix converter were simulated. The results show that sliding model control method Ⅱ（using error signal ε and its integration as sliding model plane） has better performance in dynamic response, static speed control and anti-interference. The simulated results are consistent with theoretical analysis, verifying that the theoretical analysis is right and the proposed method is feasible.