Variable-Coefficient Complex Vector Control Method with Active Damping for Segmented Long-Primary Double-Sided Linear Induction Machine

The segmented long-primary double-sided linear induction machine (SLPDSLIM) exhibits time-varying parameter characteristics, rendering the traditional methods ineffective in achieving stable primary current regulation. To address this issue, this article first establishes a unit machine primary current loop model, followed by an analysis of the constant-coefficient proportional-integral control (CCPIC) method's limitations under the influence of time-varying parameters. Subsequently, a novel variable-coefficient complex vector control method with active damping (VCCVC-AD) is proposed. This method not only achieves strong robust decoupling control of the primary current but also confines the system's dominant pole within the left half of the complex plane, significantly enhancing the current control stability. Finally, comprehensive experimental results fully demonstrate the effectiveness and superiority of the proposed method.