关键词: 电磁弹射, 双边直线感应电机, 等效电路模型, 变极距

Abstract:

According to the specific requirements of the projectile catapult ejection, the performance of the variable pole length and long primary bilateral linear induction motor was analyzed. Based on the equivalent circuit model of the linear induction motor, the relationship between the conductive magnetic thrust and the design parameters was deduced. The varying pole pitch double-sided linear induction motor for catapult was studied, controlling the current frequency and reducing the losses of the linear motor at high running speed. The mathematical simulation model of the linear induction motor was established to analyze the motor's dynamic performance, find the superiority of the varying pole pitch linear induction motor to traditional linear motor and analyze the impact of secondary length and current frequency on pole pitch. The results provide useful implication for the application of linear motor in carrier-based aircraft catapult.

Key words: electromagnetic catapult, double-sided linear induction motor, equivalent circuit model, varying pole pitch