Jerk optimization in elevator control: A comparative study of direct torque and field-oriented control techniques

This work investigates the utilization of Direct Torque Control (DTC) and Field-Oriented Control (FOC) in high-power polyphase induction motor drives, commonly employed in electric traction drives. When comparing DTC with FOC in elevator systems, it is crucial to emphasize the significance of incorporating jerk control to improve both the comfort of the trip and the efficiency of the system. MATLAB Simulink is employed to model and simulate the dynamics of motors under different operating circumstances. During beginning in DTC, there is a significant and evident surge in motor torque, leading to quick stabilization but perhaps producing abrupt movements for occupants. The FOC system provides a smooth and uninterrupted changeover to the desired torque. Both methods exhibit effective torque regulation, with DTC emphasizing velocity and FOC giving priority to seamless operation. Utilizing jerk control through the implementation of an S-Curve can effectively reduce mechanical stress and enhance the overall ride quality by ensuring a smoother experience. The results highlight the benefits of integrating jerk control, which aids in selecting suitable control systems for elevators and improving vertical transit efficiency.