Induction Motor DTC Performance Improvement by Reducing Flux and Torque Ripples in Low Speed

Zahraoui, Yassine; Akherraz, Mohamed; Elbadaoui, Sara

doi:10.18196/jrc.v3i1.12550

Cited by 11 publications

(11 citation statements)

References 25 publications

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“…However, the tangential component of the voltage vector is very low, therefore the torque variation will also be low. For this, we must introduce the idea of small torque increase instead of torque increase [12]. The new partition is detailed in the Figure 7.…”

Section: Twelve Sectors Dtc For Ripples Reductionmentioning

confidence: 99%

DTC Improvement for Induction Motor Ripples Reduction by Increasing the Number of Sectors

Zahraoui,

Moutchou,

Tayane

et al. 2023

Int. J. Autom. Smart

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This paper presents a modified version of the direct torque control (DTC) in order to improve the performance of the induction motor (IM) operation. The main goal is to reduce the high ripples that constitute the major drawbacks, and which lead to an acoustical noise and degrade the performance of the control scheme, especially at low-speed regions. The augmentation of the number of sectors is a very useful solution, the modified DTC provides a constant switching voltage frequency. This technique reduces the high ripples level in the torque and the flux in spite of its complexity. The twelve sectors DTC with a modified switching table is an effective solution. The obtained results are satisfactory and the performance of the proposed strategy is improved. The results of all the discussed aspects have been obtained by numerical simulation using MATLAB/Simulink.

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Section: Twelve Sectors Dtc For Ripples Reductionmentioning

confidence: 99%

DTC Improvement for Induction Motor Ripples Reduction by Increasing the Number of Sectors

Zahraoui,

Moutchou,

Tayane

et al. 2023

Int. J. Autom. Smart

View full text Add to dashboard Cite

show abstract

“…The DC bus voltage is denoted by Vdc. The following is the formula for calculating switching times (duty cycles) [34,35].…”

Section: A Dtc-svm Algorithm For 2-level Invertermentioning

confidence: 99%

Performance Enhancement of Induction Motor Based on Three-Level T-Type Inverter Using DTC-SVM

Abbas

Hassan

2022

ITM Web Conf.

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Induction motors (IM) that are driven using the conventional direct torque control algorithm (DTC) suffer from vital drawbacks which are high ripples in the torque and flux. These ripples result due to the use of a look-up table and hysteresis comparators which causes variable switching frequency. Moreover, the use of a traditional two-level inverter leads to the production of low-quality voltage and current. The work presented in this paper proposed a modified control system to overcome these drawbacks. The proposed control system is based on the use of the space vector modulation-based DTC algorithm (DTC-SVM) for driving three-phase IM via a three-level T-Type inverter. The conventional DTC-SVM algorithm has been modified to match the work of the proposed inverter. The modification process was based on the mapping of the standard DTC-SVM algorithm in the space vector of the three-level inverter. The conventional and the modified control systems are implemented using MATLAB/Simulink package. The comparison of the standard and the modified DTC-SVM has been performed by simulation. Simulation results showed the superiority of the proposed algorithm in terms of reducing ripple in torque and flux and improving the quality of current and voltage supplied to the motor.

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“…According to Fig. 5, the seven-level NPC inverter can generate one hundred twenty-five voltage vectors [38].…”

Section: Five-level Npc Inverter Designmentioning

confidence: 99%

Synchronous Reluctance Motor Performance Improvement Using MTPA Control Strategy and Five-Level Inverter Topology

Zahraoui

Moutchou

Tayane

et al. 2022

Journal of Robotics and Control

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An improved vector control method is presented in this study to enhance synchronous reluctance motor (SynRM) performance. The maximum torque per ampere (MTPA) technique has demonstrated good dynamic properties since the torque control is closely tied to the current control. The selection of the control approach is primarily influenced by how the reference current values will be defined. Additionally, a five-level neutral-point-clamped (NPC) inverter replaces the traditional two-level inverter. Only eight voltage vectors can be produced by a two-level inverter, whereas one hundred twenty-five voltage vectors can be generated by a five-level inverter. The goal is to produce an output voltage vector that closely resembles the reference voltage vector in order to ensure a quick response on the one hand and enhance dynamic performance on the other. An exact comparison of the suggested vector control strategy's properties is made once it has been simulated in MATLAB/Simulink. The acquired findings are satisfactory and high performance is attained in terms of response time, torque ripple reduction, and current waveform improvement.

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Induction Motor DTC Performance Improvement by Reducing Flux and Torque Ripples in Low Speed

Cited by 11 publications

References 25 publications

DTC Improvement for Induction Motor Ripples Reduction by Increasing the Number of Sectors

DTC Improvement for Induction Motor Ripples Reduction by Increasing the Number of Sectors

Performance Enhancement of Induction Motor Based on Three-Level T-Type Inverter Using DTC-SVM

Synchronous Reluctance Motor Performance Improvement Using MTPA Control Strategy and Five-Level Inverter Topology

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