Hybrid DTC strategy based on predictive control with optimization of the PI controller parameters for TPIM drives

Mahmood Ghanbari,Mehdi Ahmadi Taleshian,Seyed Mehdi Rakhtala

doi:10.5377/nexo.v34i02.11556

Mahmood Ghanbari, Mehdi Ahmadi Taleshian + Show 1 more

Open Access

https://doi.org/10.5377/nexo.v34i02.11556

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Abstract

In this paper, a novel hybrid Direct Torque Control (DTC) strategy based on predictive control with optimization of the Proportional-Integral (PI) controller to improve overall performances of Three-Phase Induction Machine (TPIM) drives is proposed. The presented control technique has contained merits of the DTC method such as fast dynamic response, simple structure, less dependence to machine parameters and merits of vector control method such as high accuracy. Furthermore, a hybrid DTC method with optimal voltage vectors is presented. In the proposed control system, Genetic Algorithm (GA) is employed to obtain optimal values of the PI controller parameters. Finally, simulation results under the presented control strategy showed good performances of this method in comparison with DTC and vector control techniques.

Highlights

Direct Torque Control (DTC) methods are two common control approaches for machine drives
This paper proposes a hybrid DTC strategy for Three-Phase Induction Machine (TPIM) drives based on predictive control along with optimization of the PI controller using Genetic Algorithm (GA)
The simulation results of the vector control strategy, DTC method, and the proposed control strategy with GA are shown in Figure 5 and 6

Summary

INTRODUCTION

Direct Torque Control (DTC) methods are two common control approaches for machine drives. DTC method is very popular control strategy due to its simple structure, low cost, and fast dynamic response for TPIM drive systems. Even though the aforementioned methods can enhance the performance of the conventional predictive DTC, the main focus of these papers is on the steady state performance of the drive system These methods have high computational complexity and depend on machine parameters. This paper proposes a hybrid DTC strategy for TPIM drives based on predictive control along with optimization of the PI controller using GA. Simulation results indicate that the proposed control method has better performances in both transient and steady state compared to the conventional DTC. The results show that the proposed control method has simple structure and better transient performance compared to the conventional vector control strategy.

DATA AND METHODOLOGY

RESULTS AND DISCUSSIONS

CONCLUSIONS