DIRECT TORQUE CONTROL WITH SPACE VECTOR MODULATION USING INTERVAL TYPE 2 FUZZY LOGIC REGULATORS OF DUAL STAR INDUCTION MACHINE FED BY TWO THREE-LEVEL NEUTRAL POINT CLAMPED INVERTER
DOI:
https://doi.org/10.59277/RRST-EE.2024.2.7Keywords:
Dual star induction machine (DSIM), Three-level neutral point clamped inverter, Interval type-2 fuzzy logic regulator (IT2FLC), Direct torque control with space vector modulation (DTC-SVM)Abstract
This paper introduces a direct torque control (DTC) method with space vector modulation (SVM) using interval type-2 fuzzy logic regulators for a dual-star induction machine fed by two three-level neutral point clamped inverters. The conventional DTC drive utilizes a pair of hysteresis comparators, which can lead to issues such as high torque ripple and variable switching frequency. As a result, we introduce several alternative methods, including DTC-SVM. We replace the hysteresis comparators with two Proportional-Integral (PI) regulators to enhance DTC performance, which generates the direct and quadrature voltage components in the d-q frame. The intricacy of the control system can make adjusting the PI regulator parameters difficult. To address this challenge, we propose using an interval type-2 fuzzy logic regulator for PI parameter adjustment in this paper. Our simulation results demonstrate the robustness and efficiency of the IT2FLC regulator.
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