DTC-SVM-Based Sliding Mode Controllers with Load Torque Estimators for Induction Motor Drives

Salem, Fatma Ben; Derbel, Nabil

doi:10.1007/978-981-10-2374-3_14

Cited by 10 publications

(5 citation statements)

References 16 publications

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“…Sliding mode (SM) controllers perform well in non nonlinear systems than PI controllers [13,14]. Indeed, the sliding mode control is a type of variable structure systems characterized by the high simplicity and the robustness against insensitivity to parameter variations and external disturbances [14][15][16]. Considering a nonlinear system described by the following state equation:…”

Section: Concept Of Sliding Mode Dtc-svm Based Position Controlmentioning

confidence: 99%

DTC-SVM Approaches of an Induction Motor Dedicated to Position Control Applications

Salem¹

2021

Direct Torque Control Strategies of Electrical Machines

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The chapter is devoted to the DTC and DTC-SVM position control approaches of induction motor (IM) allowing the movement of a photovoltaic panel according to the maximum sunshine position to extract a high efficiency of the system. The DTC is selected to full the application requirements, especially a maximum torque at standstill. This feature is necessary in order to guarantee a high degree of robustness of the maximum sunshine position tracking system against the high and sudden load torque variations characterized by the gusts of wind. The first step is devoted to a comparison study between three DTC strategies, dedicated to position control, such that: the basic DTC strategy, the DTC strategy with a look-up table including only active voltage vectors, and the DTC-SVM strategy with hysteresis controllers. Furthermore, the synthesis and the implementation of DTC-SVM approaches based on position control are treated. Within this context, the final part of the chapter proposes a comparison between three DTC-SVM approaches: (i) a DTC-SVM approach using PI controllers, (ii) a DTC-SVM approach using PI controllers with a nonlinear compensator, and (iii) a DTC-SVM approach using sliding mode controllers. In that case, an adaptation approach of parameter estimators are implemented in order to eliminate the effects of parameter variations and load disturbances. Simulations results show that the SM DTC-SVM approach gives the best results.

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Section: Concept Of Sliding Mode Dtc-svm Based Position Controlmentioning

confidence: 99%

DTC-SVM Approaches of an Induction Motor Dedicated to Position Control Applications

Salem¹

2021

Direct Torque Control Strategies of Electrical Machines

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“…In (Benbouhenni et al, 2017), the authors proposed to replace the conventional controller used to control the speed of the IM by an adaptive fuzzy logic controller. In (Ben Salem & Derbel, 2017), the authors proposed to control the speed of the motor by sliding mode control and used AI to improve the DTC performances.…”

Section: Introductionmentioning

confidence: 99%

Application of the type-2 fuzzy logic controller and the fractional order controller to regulate the DTC speed in an induction motor

Mabrouk,

Mokhtari,

Allaoui

2023

Vojnotehnički glasnik

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Introduction/purpose: Among excellent strategies available to control the torque of asynchronous motors, we distinguish direct torque control. This technique of control allows direct control of magnetic flux and electromagnetic torque without the need to decouple them. Also, direct torque control like each control strategy has some drawbacks, the major drawbacks of this technique being operation at a variable switching frequency and flux and electromagnetic ripples due to the use of hysteresis regulators. It worsens acoustic noise, especially at low speeds, as well as the control performances. Methods: To improve the performance of direct torque control especially at low speeds, the authors propose using fractional order PID in combination with type-2 fuzzy logic controllers to regulate the speed of an induction motor controlled by direct torque control. Results: The results obtained by the proposed regulators show the improvements made to the system. Conclusion: The proposed contribution can exert better control efforts.

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“…The constant switching frequency DTC using the space vector modulation (DTC-SVM) is a well discussed solution; in order to improve the DTC-SVM performances, hysteresis comparators of electromagnetic torque and stator flux have been replaced by PI controllers, [5,6]. The main drawbacks of DTC-SVM using PI controllers are the sensitivity of the performances to the system-parameter variations and the inadequate rejection of external disturbances and load changes [7][8][9][10][11]. To cope with this disadvantage, it is suggested to replace the conventional regulators used for the speed control, flux, and electromagnetic torque by intelligent controllers by fuzzy logic to make the controls more robust against the disturbances of the parameters of the machine.…”

Section: Introductionmentioning

confidence: 99%

Direct Torque Control Strategies of Induction Machine: Comparative Studies

Cherifi¹,

Miloud²

2021

Direct Torque Control Strategies of Electrical Machines

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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.

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DTC-SVM-Based Sliding Mode Controllers with Load Torque Estimators for Induction Motor Drives

Cited by 10 publications

References 16 publications

DTC-SVM Approaches of an Induction Motor Dedicated to Position Control Applications

DTC-SVM Approaches of an Induction Motor Dedicated to Position Control Applications

Application of the type-2 fuzzy logic controller and the fractional order controller to regulate the DTC speed in an induction motor

Direct Torque Control Strategies of Induction Machine: Comparative Studies

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