Study on optimal acceleration control of three phase induction motors

Abstract

This paper presents a study on the acceleration and deceleration process of a three phase induction motor during start up and stop phases, aiming to enhance the dynamic performance of the drive system. Based on torque and speed control principles, the author proposes the application of a high order S-curve acceleration profile to overcome the limitations of linear acceleration, such as reduced efficiency, mechanical vibrations, jerks, and shortened system lifespan. Simulation results demonstrate that the S-curve profile not only reduces jerk but also minimizes torque oscillations, significantly improving the smoothness and overall performance of the drive system. Furthermore, the S-curve profile generation algorithm has been implemented in software and deployed on an FPGA hardware platform. Both software and hardware simulation results confirm that the generated speed control signals achieve high resolution and fast response, making the solution well suited for integration into induction motor drive systems.