Experiment-based Comparative Analysis of Nonlinear Speed Control Methods for Induction Motors

Abstract

Field-oriented control (FOC) for induction motors is widely used in industrial applications. By using a fast and accurate torque controller based on a stator current controller it is possible to flexibly implement advanced speed control methods to achieve proper performance both in transient and steady-state states. In this study, a deadbeat controller was used for the current loop. The nonlinear methods used for the outer loop controller were backstepping, flatness-based control, and exact feedback linearization with state derivative. The dynamic responses of these three controls were compared through various experimental results. The advantages and disadvantages of the different control structures were analyzed and evaluated in detail. Based on this evaluation, an appropriate scheme can be specified when deployed in practice.

A study on PMSM drive systems fed by multi-level inverter using linear quadratic regulator control for electric vehicle applications

“…Electric drive systems are implemented with control structures such as scalar control (𝑢/𝑓), direct torque control (DTC), and rotor flux-like (FOC) [13]. In addition, this electric drive structure combines linear, and intelligent control methods for torque control, speed, and position to ensure and improve the quality of electric transmission in terms of speed, precisely as required [14]- [16]. Over more, these electrical drive Based on the research of [17]- [19], multi-level inverters such as neutral point clamped (NPC), cascaded H-bridge (CHB), and T-type have been used for traction drives.…”