The linear induction generator, recognized for its highly efficient, structural simplicity, and operational reliability, has garnered significant attention across various domains, including magnetic levitation systems, rail transportation, and wave energy conversion. This study presents an investigation into the power output performance of linear induction generators employed in rail vehicles, utilizing Matlab/Simulink for systematic analysis. The simulation model integrates a double closed-loop vector control system to address electromechanical coupling. Outer speed loop uses a PI regulator to track the given speed, while the inner cur-rent loop implements field-oriented control. The simulation achieves the modeling of train operation under constant speed conditions. Simulation results indicate that the linear induction motor reliably transition into the power generation state with the power generation exhibiting a non-monotonic relationship with the slip |s|. The power generation capacity shows an initial increase followed by a decrease within the range of 0.02 ≤ |s| ≤ 0.09, reaching its maximum value at |s| = 0.05.