Comparative Analysis of H∞ and PI Controllers for Induction Motors in Electric Vehicles

Abstract

This paper presents a comparative study of current control strategies for AC induction motors (ACIMs) under thermal variations within an Indirect Field-Oriented Control (IFOC) framework. Temperature rise significantly alters stator and rotor resistances, causing performance degradation and detuning in conventional Proportional-Integral (PI) controllers. To address this issue, a robust H-infinity ($H \infty$) controller is developed to account for parameter uncertainties and temperature-dependent variations. MATLAB/Simulink results show that the $\mathbf{H} \infty$ controller provides faster transients, improved disturbance rejection, and enhanced robustness compared to the PI controller, making it well suited for electric vehicles, renewable energy drives, and advanced industrial automation.