Enhanced reaching-law-based discrete-time terminal sliding mode current control of a six-phase induction motor
DATE:
2023-01-13
UNIVERSAL IDENTIFIER: http://hdl.handle.net/11093/7123
EDITED VERSION: https://www.mdpi.com/2075-1702/11/1/107
UNESCO SUBJECT: 3317 Tecnología de Vehículos de Motor
DOCUMENT TYPE: article
ABSTRACT
This paper develops an inner stator current controller based on an enhanced reaching-law-based discrete-time terminal sliding mode. The problem of tracking stator currents with high accuracy while ensuring the robustness of a six-phase induction motor in the presence of uncertain electrical parameters and unmeasurable states is tackled. The unknown dynamics are approximated by using a time delay estimation method. Then, an enhanced power-reaching law is used to make each stage of the convergence faster. A stability analysis and the system controller’s finite-time convergence are demonstrated in detail. Practical work was conducted on an asymmetrical six-phase induction machine to illustrate the developed discrete approach’s robustness and effectiveness.