永磁同步电动机新型双闭环矢量控制算法

A New Dual Closed-Loop Vector Control Algorithm for PMSM

矢量控制在永磁同步电动机控制系统中应用较为广泛,而传统的矢量控制采用转速-电流双闭环控制,电机的动态性能不完全理想。提出了一种新型双闭环矢量控制算法,该算法用转速平方作为控制量,再通过瞬时功率解耦得到电流内环。给出了新型双闭环矢量控制算法的理论依据,实验验证了新型双闭环矢量控制算法的可行性,并与传统的矢量控制算法进行比较,所提出的控制算法具有更好的动态性和稳定性。

Vector control is widely used in the PMSM control system. The dynamic performance of PMSM using traditional vector control with speed- current double closed- loop is less than ideal. A new dual closed- loop vector control algorithm for PMSM was proposed in this paper. This algorithm takes square of the speed as the control variable and uses the instantaneous power to acquire the current inner loop. A theoretical basis for the new dual closed- loop vector control algorithm was presented in this paper. Finally,the feasibility of the new dual closed- loop control algorithm was verified by experiments. And the motor speed using this new dual closed- loop vector control algorithm has a better dynamic performance compared to the traditional vector control algorithm.