Five-Phase Induction Motor DTC-SVM Scheme with PI Controller and ANN Controller

Meroufel

et al. 2021

IJECE

By using the direct torque control (DTC), robust response in ac drives can be produced. Ripples of currents, torque and flux are oberved in steady state. space vector modulation (SVM) applied in DTC and used for a sensorless induction motor (IM) with fuzzy sliding mode speed controller (FSMSC) is studied in this paper. This control can minimize the torque, flux, current and speed pulsations in steady state. To estimate the rotor speed and stator flux the model reference adaptive system (MRAS) is used that is designed from identified voltages and currents. The FSMSC is used to enhance the efficiency and the robustness of the presented system. The DTC transient advantage are maintained, while better quality steady-state performance is produced in sensorless implementation for a wide speed range. The drive system performances have been checked by using Matlab Simultaion, and successful results have been obtained. It is deduced that the proposed control system produces better results than the classical DTC.

Section: Figure 2 Description Of the Voltage Vector Generationmentioning

confidence: 99%

DTC based on SVM for induction motor sensorless drive with fuzzy sliding mode speed controller

Meroufel

et al. 2021

IJECE

Direct Torque Control Strategies of Electrical Machines

“…The vector PWM technique (SVM) is used to apply a voltage vector with a fixed switching frequency. The control system consists of replacing the switching table and the hysteresis comparators with proportional and integrating controllers (PI) for controlling the stator flux and the electromagnetic torque, [6,[23][24][25][26][27]. The main drawbacks of DTC-SVM using PI controllers are the sensitivity of the performances to the systemparameter variations and the inadequate rejection of external disturbances and load changes [28,29].…”

Section: Constant Switching Frequency Direct Torque Control Using Svmmentioning

confidence: 99%

“…If e is A i and Δe is B i , then k 0 p is C i , and k 0 i is D i (27) where A i , B i , C i , and D i are fuzzy sets on corresponding supporting sets. The associated fuzzy sets involved in the fuzzy control rules are defined as follows:…”

Section: The Speed Control Of the Im By An Adaptive Fuzzy-pi Controllermentioning

confidence: 99%

Direct Torque Control Strategies of Induction Machine: Comparative Studies

Cherifi¹,

Miloud²

2021

The direct torque control (DTC) was proposed as an alternative to the vector control in the middle of 1980s for AC machine control. This strategy bases on the direct determination of inverter switching states and offers a simpler scheme and less sensitivity to machine parameters. However, the variable switching frequency of DTC causes high flux and torque ripples which lead to an acoustical noise and degrade the performance of the control technique, especially at low-speed regions. In the objective of improving the performance of DTC for the induction motor, this work addresses the most important points concerning this issue. The reduction of high ripples, which are the major drawbacks, by applying a constant switching frequency using the space vector modulation (SVM) has been done firstly. Then, fuzzy DTC-SVM strategy with adaptive fuzzy-PI speed controller has been proposed. The results of all the discussed aspects of this chapter have been obtained by numerical simulation using MATLAB/Simulink software.

Turk J Elec Eng & Comp Sci

“…In order to overcome this problem, this method is improved by eliminating the hysteresis regulators and the vector selection table. This new strategy is based on the PI regulators and the SVM technique, in which the inverter operates at a constant frequency, and the SVM is applied to the output vector of the control [6,16,[18][19][20][21]. This technique (synchronous DTC) offers an alternative solution avoiding the disadvantages of the conventional DTC [6,16,[18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Hybrid control of five-phase permanent magnet synchronous machine using space vector modulation

Difi¹,

Halbaoui²,

Boukhetala³

2019

This paper aims to study the hybrid control of a five-phase permanent-magnet synchronous machine improved by the space vector modulation (SVM) technique. The torque ripples and currents will therefore be reduced. This control is based on the theory of hybrid dynamic systems (HDS), its discrete component is the voltage inverter which has a finite number of states controlling the continuous component that represents the machine. The results of the simulation made on MATLAB/Simulink are presented and discussed in order to check the performance of the strategy of the studied control. They show, in particular, the main advantages of this control manifesting the good dynamic of the electromagnetic torque and the robustness against the parametric variations.