Journal articles: 'DTC (direct torque control)'

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Kadum, Arkan A. "New adaptive hysteresis band width control for direct torque control of induction machine drives." International Journal of Power Electronics and Drive Systems (IJPEDS) 11, no. 4 (December 1, 2020): 1908. http://dx.doi.org/10.11591/ijpeds.v11.i4.pp1908-1917.

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This paper presents a new adaptive hysteresis band control approach used in direct torque control (DTC) of the induction motor (IM) drives with the switching tables for the generation of PWM signals. Constant Hysteresis Direct torque control (CHB-DTC) method used the torque and stator flux errors to generate the stator voltage reference and frequency vectors for controlling the three-phase induction motor. The CHB-DTC gives better torque transient performance but it has large steady state ripples. To reduce torque and stator current ripples in CHB-DTC controlled induction motor drives a new adaptive hysteresis band control (AHB) approach is proposed, where the hysteresis band is adapted in real time with the stator flux and torque errors variation, instead of fixed bandwidth. Both classical CHB-DTC method and the proposed adaptive hysteresis band DTC (AHB-DTC) fed three induction motor have been simulated using Matlab/Simulink. The simulation results at different operating conditions over a wide speed range demonstrate the validity, effectiveness, and feasibility of the proposed scheme. The measurements showed that torque ripples were significantly decrease with the new AHB-DTC technique and better speed response in step up or down compared to the CHB-DTC.

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Abdullah, Ali Najim, and Mohammed Hasan Ali. "Direct torque control of IM using PID controller." International Journal of Electrical and Computer Engineering (IJECE) 10, no. 1 (February 1, 2020): 617. http://dx.doi.org/10.11591/ijece.v10i1.pp617-625.

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Direct torque control "DTC" technique is one of a high performance control system of an AC motor drive, which was proposed after the vector oriented control scheme during the resent 25 years. It has been developed rapidly for its concise system scheme, transient and dynamic performance. The DTC mechanism consists of voltage vector selection table, two hysteresis comparators and two estimators one for stator flux and another for electromagnetic torque. DTC is directly control torque and flux by using Voltage Source Inverter VSI, space vector and stator flux orientation and indirect speed regulated. A several control techniques can be used for improving the torque and flux performance. In this paper, the DTC with Proportional-Integral-Derivative (PID) controller used to improve the starting and dynamic performance of asynchronous motor AM, which gives good torque and flux response, best speed control and also minimize the unacceptable torque ripple. The mathematical model of DTC with PID controller of 3-phase induction motor IM are simulated under Matlab-Simulink. Therefore, the DTC based on PID controller has good performance of IM compared to classical DTC for starting, running state and also during change in load.

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Hu, Wei Chao, Yan Chao Li, Ze Bin Yang, and Huang Qiu Zhu. "Direct Torque Control of Bearingless Synchronous Reluctance Motor." Applied Mechanics and Materials 150 (January 2012): 36–39. http://dx.doi.org/10.4028/www.scientific.net/amm.150.36.

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The bearingless synchronous reluctance motor (BSynRM) is a multi-variable, nonlinear and strong-coupled system. To solve the difficult problem of precise decoupling in electric torque and radial suspension force control, the theory of direct torque control of traditional synchronous reluctance motor are applied to the torque control of a BSynRM in this paper. Based on mathematical models of the BSynRM, A direct torque control algorithm based on space vector pulse width modulation (SVM-DTC) is deduced. The SVM-DTC control system is designed and simulated. The simulation results show the control algorithm of SVM-DTC realizes decoupling in electric torque and radial suspension force control. The static and dynamic performance of electric torque, speed and radial suspension force of the BSynRM is excellent.

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Maher, Azaza, Echaieb Kamel, and Mami Abdelkader. "FPGA-based Architecture of Direct Torque Control." International Journal of Reconfigurable and Embedded Systems (IJRES) 6, no. 1 (May 28, 2018): 20. http://dx.doi.org/10.11591/ijres.v6.i1.pp20-27.

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This paper presents an optimized FPGA architecture of a DTC “direct torque control” drive of an induction motor. The proposed architecture is based on variable fixed point world size and the use ipcores in order to achieve higher sampling frequency which leads to reduce the electromagnetic torque and flux ripples. The hardware implementation was experimentally validated, the results shows the effectiveness of the hardware DTC drive implementation by the minimization of the torque and flux ripple

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Gu, Chun Bo, Zhong Chu Wang, and Lin Liu. "Research of Direct Torque Control of Asynchronous Motor." Advanced Materials Research 986-987 (July 2014): 1112–16. http://dx.doi.org/10.4028/www.scientific.net/amr.986-987.1112.

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Direct torque control (DTC) as a new type of motor control strategy, make the control system has good dynamic regulation performance. In this paper, we use the theory of direct torque control to research the speed regulation system of asynchronous motor direct torque control principle and its main component. Use Matlab/Simulink library to build the simulation model of induction motor DTC complete simulation and results show that the direct torque control run time has good control effect in asynchronous motor.

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Cherifi, Djamila. "Improvement technique of direct torque control of DFIG based in wind energy conversion system." Global Journal of Information Technology: Emerging Technologies 10, no. 1 (April 30, 2020): 22–34. http://dx.doi.org/10.18844/gjit.v10i1.4630.

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This paper presents a comparative study between two strategies for the direct torque control (DTC) of the doubly fed induction generator (DFIG) based on wind energy conversion system (WECS). The first method is a conventional direct torque control DTC and it is based on hysteresis controllers where the torque and the flux are regulated by these controllers. The second one is direct torque control by space vector modulation strategy (DTC-SVM) where the torque and flux are regulated by PI controllers. The main feature of the proposed (DTC-SVM) strategy is the reduction of torque and flux ripples. Simulation results of this proposed system were analyzed using MATLAB environment

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Cherifi, Djamila, and Yahia Miloud. "Improvement technique of direct torque control of DFIG based on wind energy conversion system." World Journal of Environmental Research 9, no. 2 (December 31, 2019): 46–58. http://dx.doi.org/10.18844/wjer.v9i2.4627.

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This paper presents a comparative study between two strategies for the direct torque control (DTC) of the doubly fed induction generator based on the wind energy conversion system. The first method is a conventional DTC and it is based on hysteresis controllers where the torque and the flux are regulated by these controllers. The second one is DTC by space vector modulation strategy (DTC-SVM) where the torque and flux are regulated by PI controllers. The main feature of the proposed (DTC-SVM) strategy is the reduction of torque and flux ripples. Simulation results of this proposed system were analysed using the MATLAB environment. Keywords: Doubly fed induction generator (DFIG), wind power generation systems, direct torque control (DTC), space vector modulation (SVM).

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Ji, Xuande, Daqing He, and Yunwang Ge. "Study of Direct Torque Control Scheme for Induction Motor Based on Torque Angle Closed-Loop Control." Open Electrical & Electronic Engineering Journal 9, no. 1 (November 11, 2015): 600–609. http://dx.doi.org/10.2174/1874129001509010600.

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For disadvantages of the large flux and torque ripple and current waveform distortion of Direct Torque Control (BASIC-DTC), the DTC scheme for induction motor based on torque angle closed-loop control was presented and the proposed scheme was realized with three methods of torque angle closed-loop control. The main characteristics of three methods of torque angle closed-loop control for the proposed scheme was analyzed, emphasizing their advantages and disadvantages. The performance of three methods of torque angle closed-loop control for the proposed scheme was studied in terms of flux and torque ripple, current waveform distortion and transient responses. Simulation results showed that the proposed scheme improves the performance of induction motor BASIC-DTC by combining low flux ripple, low torque ripple and low current waveform distortion’s characteristics with fast dynamics.

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Zhan, Ke Yi, Hai Bo Gao, and Fei Fei Chi. "Simulation Research of Direct Torque Control for Marine Permanent Magnet Synchronous Motor." Advanced Materials Research 1044-1045 (October 2014): 858–62. http://dx.doi.org/10.4028/www.scientific.net/amr.1044-1045.858.

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The permanent magnet synchronous motors are more and more popular in marine electric propulsion field. Aiming to solve the problem of large torque ripple in traditional DTC system, this paper introduces the principle of space vector modulation and builds the electric propulsion system models based on direct torque control for permanent magnet synchronous motor in Simulink. Typical working condition experiments are designed to contrast the performances between traditional DTC and SVM-DTC. Simulation result proves that SVM-DTC can reduce ripples of both electromagnetic torque and stator flux effectively with the same dynamic response character as traditional DTC system.

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Rifqi Zuber Ahmadi, Muhd Zharif, Auzani Jidin, Maaspaliza Azri, Khairi Rahim, and Tole Sutikno. "Improved Torque Control Performance in Direct Torque Control using Optimal Switching Vectors." International Journal of Power Electronics and Drive Systems (IJPEDS) 5, no. 3 (February 1, 2015): 441. http://dx.doi.org/10.11591/ijpeds.v5.i3.pp441-452.

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This paper presents the significant improvement of Direct Torque Control (DTC) of 3-phases induction machine using a Cascaded H-Bidge Multilevel Inverter (CHMI). The largest torque ripple and variable switching frequency are known as the major problem founded in DTC of induction motor. As a result, it can diminish the performance induction motor control. Therefore, the conventional 2-level inverter has been replaced with CHMI the in order to increase the performance of the motor either in dynamic or steady-state condition. By using the multilevel inverter, it can produce a more selection of the voltage vectors. Besides that, it can minimize the torque ripple output as well as increase the efficiency by reducing the switching frequency of the inverter. The simulation model of the proposed method has been developed and tested by using Matlab software. Its improvements were also verified via experimental results.

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Yang, Zebin, Lin Chen, Xiaodong Sun, Weiming Sun, and Dan Zhang. "A Bearingless Induction Motor Direct Torque Control and Suspension Force Control Based on Sliding Mode Variable Structure." Mathematical Problems in Engineering 2017 (2017): 1–11. http://dx.doi.org/10.1155/2017/2409179.

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Aiming at the problems of the large torque ripple and unstable suspension performance in traditional direct torque control (DTC) for a bearingless induction motor (BIM), a new method of DTC is proposed based on sliding mode variable structure (SMVS). The sliding mode switching surface of the torque and flux linkage controller are constructed by torque error and flux error, and the exponential reaching law is used to design the SMVS direct torque controller. On the basis of the radial suspension force mathematical model of the BIM, a radial suspension force closed-loop control method is proposed by utilizing the inverse system theory and SMVS. The simulation models of traditional DTC and the new DTC method based on SMVS of the BIM are set up in the MATLAB/Simulink toolbox. On this basis, the experiments are carried out. Simulation and experiment results showed that the stable suspension operation of the BIM can be achieved with small torque ripple and flux ripple. Besides, the dynamic response and suspension performance of the motor are improved by the proposed method.

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Benevieri, Alessandro, Gianmarco Maragliano, Mario Marchesoni, Massimiliano Passalacqua, and Luis Vaccaro. "Induction Motor Direct Torque Control with Synchronous PWM." Energies 14, no. 16 (August 16, 2021): 5025. http://dx.doi.org/10.3390/en14165025.

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A novel induction motor direct torque control (DTC) algorithm with synchronous modulation is presented. Compared to the traditional DTC method, whose main drawback is the presence of low-frequency torque harmonics (sub-harmonics), in the proposed method, the PWM switching frequency is imposed to be an integer multiple of the main supply frequency. This is achieved by continuously adjusting the PWM switching period to significantly reduce low-frequency harmonics. The devised algorithm has been tested on an inverter-fed induction motor drive system, and the obtained results show an important reduction of the sub-harmonic spectral content of the developed torque with respect to a conventional direct torque control while maintaining at the same time a high dynamic response.

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Yuhendri, Muldi, Ahyanuardi Ahyanuardi, and Aswardi Aswardi. "Direct Torque Control Strategy of PMSM Employing Ultra Sparse Matrix Converter." International Journal of Power Electronics and Drive Systems (IJPEDS) 9, no. 1 (March 1, 2018): 64. http://dx.doi.org/10.11591/ijpeds.v9.i1.pp64-72.

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Matrix converter is a good choice for Permanent Magnet Synchronous Motor (PMSM) drives, because it has high power density and does not require dc-link energy storage. the disadvantages of conventional matrix converter is using 18 active switches, so it becomes expensive and the modulation method becomes more complicated than back to back converter. To minimize this problem, this paper proposes variable speed drive of PMSM using Ultra Sparse Matrix Converter (USMC) based on Direct Torque Control (DTC) methods. This converter uses only 9 active switches, making it cheaper than conventional matrix converter. DTC is designed based on Space Vector Modulation (SVM) to reduce torque and flux ripples due to the hysteresis control in conventional DTC. The simulation results show that DTC based SVM using USMC effectively controls the rotor speed with low torque and flux ripples.

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Zhang, Xiao Chun, Xiao Jun Liu, Kai Chun Ren, Li Jie Zhu, Jing Jun Zhan, and Yong Shi. "The Research of Fuzzy Direct Torque Control in Switched Reluctance Motor." Applied Mechanics and Materials 321-324 (June 2013): 1686–91. http://dx.doi.org/10.4028/www.scientific.net/amm.321-324.1686.

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Torque ripple is a disadvantage of SRM. Using DTC strategy can cut down the ripple. DTC is a kind of Bang-Bang control, the result is limited. Fuzzy control can measure the error level to get better result. CCC strategy, DTC strategy and fuzzy DTC strategy are simulated in the article. Simulation results show that DTC strategy had cut down the ripple to some extent than CCC and it works better by combining with fuzzy control.

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Zhu, Jun, Xu Dong Wang, Bao Yu Xu, and Hai Chao Feng. "The Direct Torque Control Research of Permanent Magnet Linear Synchronous Motor." Applied Mechanics and Materials 143-144 (December 2011): 350–54. http://dx.doi.org/10.4028/www.scientific.net/amm.143-144.350.

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In order to improve the dynamic servo performance of PMLSM, a classical direct torque control (DTC) scheme based on bang-bang control is proposed in the paper. The proposed control method uses the bang-bang hysteresis controller formed a dual-closed loop control system, it contains torque loop and flux loop. The DTC control model was established and the simulation experiment was made. The simulation experiment results show that the DTC can improve the dynamic performance of PMLSM. It can reduce the ripples of speed and torque, so that it can provide more precision and accuracy servo performance.

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Li, Guo Hong, and Yi Li. "Simulation Research of Asynchronous Motor Direct Torque Control System Based on MATLAB." Applied Mechanics and Materials 577 (July 2014): 364–67. http://dx.doi.org/10.4028/www.scientific.net/amm.577.364.

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Compared with vector control, direct torque control (DTC) spurned coupling idea and canceled circumgyration coordinates transform. By detecting motor’s stator voltage and current, along with calculating motor’s flux and torque in virtue of the instantaneous space vector theory, DTC controlled flux and torque directly according to the difference between the detecting value and design value. DTC also reduced calculation amount and overcomed the flaw that the system was disturbed by motor’s parameters easily, which were the problems in the vector control. On the basis approach mentioned above, this paper realized the system simulation using DTC. Simulation shows that asynchronous motor control has favorable ability of speed adjusting, short startup time, excellent stability.

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Albalawi, Hani, Sherif A. Zaid, and Yonis M. Buswig. "Simulation Study of Two Torque Optimization Methods for Direct Torque-Controlled Induction Motors." Applied Sciences 9, no. 24 (December 16, 2019): 5547. http://dx.doi.org/10.3390/app9245547.

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The simplicity and excellent dynamic performance of Direct Torque Control (DTC) make Induction Motor (IM) drives attractive for many applications that require precise torque control. The traditional version of DTC uses hysteresis controllers. Unfortunately, the nature of these controllers prevents the optimization of the inverter voltage vectors inside the flux hysteresis band. The inverter voltage vector optimization can produce fast torque response of the IM drive. This research proposes two torque optimization methods for IM systems utilizing DTC. Analysis and Matlab simulations for the proposed optimization methods prove that the torque and, consequently, the speed responses, are greatly improved. The performances of the drive system controlled by the proposed optimization methods and the traditional DTC are compared. Conversely, the effects of the parameters on the proposed optimization methods are introduced. The proposed methods greatly improve the torque and speed dynamic performances against the traditional DTC technique. However, one of the proposed optimization methods is more sensitive to IM parameter variations than the other.

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Tang, Xiang, Jun Gu, and Ting Gao Qin. "Direct Torque Control for Permanent Magnet Synchronous Motors Based on Fuzzy Regulator." Advanced Materials Research 998-999 (July 2014): 607–12. http://dx.doi.org/10.4028/www.scientific.net/amr.998-999.607.

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In this paper, a method of direct torque control (DTC) for permanent magnet synchronous motor (PMSM) based on fuzzy regulator is proposed. It overcomes the disadvantages such as speed drop with load, torque ripple etc., which happens in the DTC for PMSM based on conventional PI regulator. The simulation results show that, the DTC for PMSM based on fuzzy regulator can effectively improve the system loading capability and significantly reduce the torque ripple and the harmonic content of the system. Therefore, it can comprehensively improve the system performance.

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Vasudevan, M., R. Arumugam, and S. Paramasivam. "High-performance adaptive intelligent Direct Torque Control schemes for induction motor drives." Serbian Journal of Electrical Engineering 2, no. 1 (2005): 93–116. http://dx.doi.org/10.2298/sjee0501093v.

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This paper presents a detailed comparison between viable adaptive intelligent torque control strategies of induction motor, emphasizing advantages and disadvantages. The scope of this paper is to choose an adaptive intelligent controller for induction motor drive proposed for high performance applications. Induction motors are characterized by complex, highly non-linear, time varying dynamics, inaccessibility of some states and output for measurements and hence can be considered as a challenging engineering problem. The advent of torque and flux control techniques have partially solved induction motor control problems, because they are sensitive to drive parameter variations and performance may deteriorate if conventional controllers are used. Intelligent controllers are considered as potential candidates for such an application. In this paper, the performance of the various sensor less intelligent Direct Torque Control (DTC) techniques of Induction motor such as neural network, fuzzy and genetic algorithm based torque controllers are evaluated. Adaptive intelligent techniques are applied to achieve high performance decoupled flux and torque control. This paper contributes: i) Development of Neural network algorithm for state selection in DTC; ii) Development of new algorithm for state selection using Genetic algorithm principle; and iii) Development of Fuzzy based DTC. Simulations have been performed using the trained state selector neural network instead of conventional DTC and Fuzzy controller instead of conventional DTC controller. The results show agreement with those of the conventional DTC.

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Echeikh, Hamdi, Ramzi Trabelsi, Hichem Kesraoui, Atif Iqbal, and Mohamed Faouzi Mimouni. "Torque ripples improvement of direct torque controlled five-phase induction motor drive using backstepping control." International Journal of Power Electronics and Drive Systems (IJPEDS) 11, no. 1 (March 1, 2020): 64. http://dx.doi.org/10.11591/ijpeds.v11.i1.pp64-74.

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The paper proposes Direct Torque Control (DTC) of a five-phase induction motor drive with reduced torque ripple. The method presented here is the DTC Backstepping based on the classic DTC working with a constant switching frequency of the inverter. Another remarkable aspect is the complexity of the method proposed, both in the control unit of the inverter and in the number of correctors necessary for the control of the torque. The selection table and hysteresis have been eliminated. This method significantly improves the torque and flux oscillations and improves the dynamics of the drive by making it less sensitive to load torque disturbances. The proposed method is developed and designed using Matlab/SIMULINK to show the eectiveness and performances of the DTC-Backstepping.

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Tan, Jian-Ding, Siaw-Paw Koh, Sieh-Kiong Tiong, Kharudin Ali, and Ahmed Abdalla. "Fuzzy Logic Enhanced Direct Torque Control with Space Vector Modulation." Indonesian Journal of Electrical Engineering and Computer Science 11, no. 2 (August 1, 2018): 704. http://dx.doi.org/10.11591/ijeecs.v11.i2.pp704-710.

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Over the past few years, multiple types of modifications have been proposed onto the Direct Torque Control (DTC) scheme. Among others is the implementation of Space Vector Modulation (SVM). In this paper, two new control strategies are proposed onto an SVM-DTC. Instead of using PI torque and flux controllers, a fuzzy logic control method is implemented in the proposed modification to achieve a more constant switching frequency while minimizing the torque error. The fuzzy logic controller controls the voltages in direct and quadratic reference frame (Vd, Vq). This approach fully utilizes the switching capability of the inverter and thus improving the overall system performance. To overcome issues in open loop stator flux such as DC drift and saturation, a closed loop estimation method of stator flux is also proposed based on voltage model and low pass filter. The performance of the proposed control strategy is benchmarked with that of a conventional DTC–SVM. Simulations and experiments were carried out and the results show that the proposed method outperforms the conventional DTC-SVM in terms of DC-offset elimination and overall system robustness. Over the past few years, multiple types of modifications have been proposed onto the Direct Torque Control (DTC) scheme. Among others is the implementation of Space Vector Modulation (SVM). In this paper, two new control strategies are proposed onto an SVM-DTC. Instead of using PI torque and flux controllers, a fuzzy logic control method is implemented in the proposed modification to achieve a more constant switching frequency while minimizing the torque error. The fuzzy logic controller controls the voltages in direct and quadratic reference frame (Vd, Vq). This approach fully utilizes the switching capability of the inverter and thus improving the overall system performance. To overcome issues in open loop stator flux such as DC drift and saturation, a closed loop estimation method of stator flux is also proposed based on voltage model and low pass filter. The performance of the proposed control strategy is benchmarked with that of a conventional DTC–SVM. Simulations and experiments were carried out and the results show that the proposed method outperforms the conventional DTC-SVM in terms of DC-offset elimination and overall system robustness.

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Mekrini, Zineb, and Seddik Bri. "High –Performance using Neural Networks in Direct Torque Control for Asynchronous Machine." International Journal of Electrical and Computer Engineering (IJECE) 8, no. 2 (April 1, 2018): 1010. http://dx.doi.org/10.11591/ijece.v8i2.pp1010-1017.

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This article investigates solution for the biggest problem of the Direct Torque Control on the asynchronous machine to have the high dynamic performance with very simple hysteresis control scheme. The Conventional Direct Torque Control (CDTC) suffers from some drawbacks such as high current, flux and torque ripple, as well as flux control at very low speed. In this paper, we propose an intelligent approach to improve the direct torque control of induction machine which is an artificial neural networks control. The principle, the numerical procedure and the performances of this method are presented. Simulations results show that the proposed ANN-DTC strategy effectively reduces the torque and flux ripples at low switching frequency, compared with Fuzzy Logic DTC and The Conventional DTC.

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Tripathy, P. R., and B. P. Panigrahi. "Simulation Studies on Switching Table based DTC and Fuzzy Rule based DTC for Three-Phase Squirrel Cage Induction Motor." Engineering, Technology & Applied Science Research 2, no. 1 (February 13, 2012): 162–66. http://dx.doi.org/10.48084/etasr.88.

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This paper describes a study of Switching Table Direct Torque Control (ST-DTC) and Fuzzy Rule based Direct Torque Control (FR-DTC) in case of a three phase induction motor. The hysteresis band and the switching table used in the ST-DTC scheme have been replaced by a Fuzzy Rule based controller in the FR-DTC. Results show that the FR-DTC method provides better transient performance compared to the ST-DTC method.

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Liu, Xian Xing, and Na Fu. "Deadbeat Direct Torque Control of Permanent Magnet Synchronous Motor Using Look-up Table." Applied Mechanics and Materials 220-223 (November 2012): 631–34. http://dx.doi.org/10.4028/www.scientific.net/amm.220-223.631.

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A new scheme of deadbeat direct torque control (DTC) of surface permanent magnet synchronous motor (SPM) is proposed in this paper. The main ideal is choosing the reference voltage vector in two phase stator reference frame previously and real-time calculating the pulse width of the reference voltage vector which diminish the error of torque. With the new scheme, the torque ripples were greatly reduced when compared with those of the basic DTC and the quick dynamic torque response of the basic DTC was still retained. Fixed switching frequency at different operating conditions becomes possible by this new structure. Simulation results verify the correctness and feasibility of this method.

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Wan, Luo Fei, Xian Xing Liu, Zheng Qi Wang, and Jin Wei Zhou. "Direct Torque Control of Bearingless Induction Motor Using Space Vector Pulse Width Modulation Based on Fuzzy Adaptive Control." Advanced Materials Research 383-390 (November 2011): 7321–27. http://dx.doi.org/10.4028/www.scientific.net/amr.383-390.7321.

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This paper presents a new strategy of direct torque controller for bearingless induction motor using space vector pulse width modulation based on fuzzy adaptive control. when we use direct torque controller using space vector pulse width modulation to take decoupling, the parameters of PI controller which generating the reference voltage vector in conventional SVM-DTC are difficult to determine the dynamic operation. In order to improve away the disadvantages of conventional SVM-DTC system, flux and torque fuzzy adaptive controller were designed to substitute the original flux and torque PI controller in the controlling for bearingless induction motor using space vector pulse width modulation. With the fuzzy algorithm, it is easy to obtain the control voltage component of the flux and torque respectively. Two voltage vectors achieve real-time adjustment and solve the disturbance problems in torque loop and flux loop. In this paper, the design process of the fuzzy adaptive controller is given. Use Matlab/Simulink to check the improved and traditional SVM-DTC method. The results show that the improved algorithms have a better performance in reducing the ripple of torque, flux and Rotor displacement when compared with the tradition DTC method. And it also improves the system dynamic performance.

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Krim, Saber, Soufien Gdaim, Abdellatif Mtibaa, and Mohamed Faouzi Mimouni. "FPGA-Based Implementation Direct Torque Control of Induction Motor." International Journal of Power Electronics and Drive Systems (IJPEDS) 5, no. 3 (February 1, 2015): 293. http://dx.doi.org/10.11591/ijpeds.v5.i3.pp293-304.

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This paper proposes a digital implementation of the direct torque control (DTC) of an Induction Motor (IM) with an observation strategy on the Field Programmable Gate Array (FPGA). The hardware solution based on the FPGA is caracterised by fast processing speed due to the parallel processing. In this study the FPGA is used to overcome the limitation of the software solutions (Digital Signal Processor (DSP) and Microcontroller). Also, the DTC of IM has many drawbacks such as for example; The open loop pure integration has from the problems of integration especially at the low speed and the variation of the stator resistance due to the temperature. To tackle these problems we use the Sliding Mode Observer (SMO). This observer is used estimate the stator flux, the stator current and the stator resistance. The hardware implementation method is based on Xilinx System Generator (XSG) which a modeling tool developed by Xilinx for the design of implemented systems on FPGA; from the design of the DTC with SMO from XSG we can automatically generate the VHDL code. The model of the DTC with SMO has been designed and simulated using XSG blocks, synthesized with Xilinx ISE 12.4 tool and implemented on Xilinx Virtex-V FPGA.

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Gao, Yu Ying, Ming Ji Liu, De Ping Kong, and Yun Gao Li. "Research on the Influence of Zero Space Voltage Vectors on Direct Torque Control of PMSM." Advanced Materials Research 383-390 (November 2011): 2628–35. http://dx.doi.org/10.4028/www.scientific.net/amr.383-390.2628.

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Direct torque control (DTC) has been widely used due to its advantages of less parameter dependence and faster torque response. However, in conventional DTC, there are obvious torque and flux ripples. This paper studies the influence of zero space voltage vectors on DTC system of permanent magnet synchronous motor (PMSM). The control model is established with Matlab/Simulink software. The simulation results show that the ripple torque can be reduced significantly when zero space voltage vectors are used. Meanwhile, the use of zero space voltage vectors can evidently decrease the switching frequency of the power switches as well as the switching loss. The achievements in this paper can provide a reference to improve DTC performance of PMSM.

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Chikh, K., A. Saad, M. Khafallah, D. Yousfi, F. Z. Tahiri, and M. Hasoun. "A Constant Switching Frequency DTC for PMSM Using Low Switching Losses SVM–An Experimental Result." International Journal of Power Electronics and Drive Systems (IJPEDS) 8, no. 2 (June 1, 2017): 558. http://dx.doi.org/10.11591/ijpeds.v8.i2.pp558-583.

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A Constant Switching Frequency Direct Torque Control (CSF-DTC) with low switching losses Space Vector modulation (SVM) for Permanent Magnet Synchronous Motor (PMSM) drive is proposed in this work. The CSF-DTC combines Field Oriented Control (FOC) and basic DTC advantages. Indeed, the proposed control strategy improves the basic DTC performances, which features low flux and torque ripples as well as a fixed switching frequency. The improved DTC ensures also a fast and robust flux and torque responses by using Integral and Proportional (IP) controllers which guaranteed a good disturbance rejection.On the other hand, a symmetrical SVM technique with low switching losses in the PWM inverter is used in order to generate the desired stator voltage vector needed to control the stator flux and the motor torque. Simulation and experimental results are presentedin this paper.These results demonstrate well the performance of the basic and proposed DTC and they show the effectiveness of the constant switching frequency direct torque control.

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Moati, Yahia, and Katia Kouzi. "Investigating the Performances of Direct Torque and Flux Control for Dual Stator Induction Motor with Direct and Indirect Matrix Converter." Periodica Polytechnica Electrical Engineering and Computer Science 64, no. 1 (December 7, 2019): 97–105. http://dx.doi.org/10.3311/ppee.14977.

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This work investigates the performances of Direct Torque Control (DTC) of Dual Stator Induction Motor (DSIM) powered by two types of Matrix Converter (MC), namely the direct and indirect MC. To this end, the design of DTC with conventional Direct Matrix Converter (DMC) is firstly presented. Then, in order to illustrate the main feature of Indirect Matrix Converter (IMC) in terms of the output voltages and input currents waveforms, the full steps of IMC are well explained. To discuss the performance of each scheme, both techniques are simulated in the Matlab / Simulink environment for a 4.5 kW DSIM at different operating conditions. The obtained results show that the IMC provides high performance in torque and flux at different conditions and while minimization the Total Harmonic Distortion (THD) in the input current compared by the conventional DMC.

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Klarmann, Kevin, Malte Thielmann, and Walter Schumacher. "Comparison of Hysteresis Based PWM Schemes ΔΣ-PWM and Direct Torque Control." Applied Sciences 11, no. 5 (March 5, 2021): 2293. http://dx.doi.org/10.3390/app11052293.

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This paper presents the differences and similarities of ΔΣ-PWM as a hysteresis-based PWM scheme with direct torque control (DTC) using simulation models. The variable switching frequency caused by the hysteresis element is examined with regard to its instantaneous values. The comparison is based on an equal maximum switching frequency as a design criterion. With this first assumption, the variation of the instantaneous switching frequency is higher when using DTC because of the temporary prioritization of one inverter leg. Besides the lower variation, ΔΣ-PWM shows a higher average switching frequency. Because the switching frequency is related to the torque ripple, the usage of ΔΣ-PWM results in a smaller torque ripple. Due to the dependence of torque ripple on switching frequency, a second comparison is carried out based on the same average switching frequency. In this comparison the ΔΣ-PWM shows higher torque ripple than DTC.

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Jidin, Auzani, Kasrul Abdul Karim, Khairi Rahim, Logan Raj Lourdes Victor Raj, Sundram Ramahlingam, and Tole Sutikno. "A Review on Constant Switching Frequency Techniques for Direct Torque Control of Induction Motor." Indonesian Journal of Electrical Engineering and Computer Science 7, no. 2 (August 1, 2017): 364. http://dx.doi.org/10.11591/ijeecs.v7.i2.pp364-372.

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The Direct Torque Control (DTC) of induction machine has received wide acceptance in many Variable Speed Drive (VSD) applications due to its simple control structure and excellent torque dynamic control performances. However, the conventional DTC which employs a two-level inverter and hysteresis controllers produces two major drawbacks, namely, larger torque ripple and variable switching frequency, which might produce a very high switching frequency (or power loss), particularly at a very low speed operation. This paper highlight the common methods used to provide the constant switching frequency for DTC drives for Induction Motor that able to minimize the power losses and reduced the torque ripple.

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Ahmad Tarusan, Siti Azura, Auzani Jidin, Mohd Luqman Mohd Jamil‬, Kasrul Abdul Karim, and Tole Sutikno. "A review of direct torque control development in various multilevel inverter applications." International Journal of Power Electronics and Drive Systems (IJPEDS) 11, no. 3 (September 1, 2020): 1675. http://dx.doi.org/10.11591/ijpeds.v11.i3.pp1675-1688.

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Multilevel inverter (MLI) is commonly utilized in direct torque control (DTC) for medium and high power applications. The additional voltage vectors generated by MLI can be manipulated to achieve the optimal selection for the inverter switching states in the DTC control systems. Previously, a review of DTC which focused more on the two-level inverter for induction motor as well as a review of the multilevel converter in industrial applications had been implemented individually. However, a review on DTC development in MLI was insufficient in both papers. Therefore, this paper aims to give a comprehensive review of the improvement of DTC via various MLI applications. It is reviewed according to the applicable multilevel inverter topologies in the DTC system. The comparison of DTC by using conventional and multilevel inverter is synthesized. Thus, this review paper will hopefully lead researchers in further research activities actively.

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Zhang, Li Ping, Xu Guang Xin, Wei Ya Wang, and Hai Feng Wu. "The Design and Simulation of AC Asynchronous Motor Direct Torque Control System." Applied Mechanics and Materials 713-715 (January 2015): 814–19. http://dx.doi.org/10.4028/www.scientific.net/amm.713-715.814.

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The direct torque control (DTC) system of the traditional asynchronous motor has many disadvantages, such as complex modeling and large amount of calculation, In order to improve the dynamic performance of the DTC system of the asynchronous motor, a direct torque control system is put forward. It uses space vector analysis method to calculate electromagnetic torque and stator flux linkage of asynchronous motor directly, follows the change of the stator flux linkage and torque, omits the complicated calculation, reduces the dependence on motor parameters. The simulation model of the DTC system of the asynchronous motor was established using SIMULINK software package. The feasibility of method is proved in theory, The results of simulation show that the modeling and simulation of the system has good static and dynamic performance, control precision of the system is higher, the stability is better.

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Ramahlingam, Sundram, Auzani Jidin, and Tole Sutikno. "A Novel Optimal PI Parameter Tuning Strategy to Improve Constant Switching Performance of Direct Torque Control." International Journal of Power Electronics and Drive Systems (IJPEDS) 7, no. 2 (June 1, 2016): 422. http://dx.doi.org/10.11591/ijpeds.v7.i2.pp422-430.

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This paper presents a novel method of optimal Propotional-Intergral (PI) controller’s parameter tuning strategy in-order to improve the Constant Switching Performance of 3-phase DTC shceme. The Direct Torque Control (DTC) sheme is acknowledged to provide fast decoupled control over the torque output and stator flux via a simple control structure. However, DTC sheme has two major downsides, which are the inconsistent inverter switching frequency and high torque output ripple. The main reason that contributes to these tribulations is the usage of hysteresis comparators in order to control the output torque. The realization of PI based controller method as replacement of hyterisis controller in DTC system able to provide significant solutions to over come the fall back while retaining the simple control structure of conventional DTC. The combination usage of higher sampling controller DS1004 and also 3-level CHMI in this system can further minimize the output torque ripple by providing higher resolution with lower digital error and greater number of vectors. This paper presents detail explanation and calculation of optimal PI parameter tuning strategy consecutively to enhance the performance of 3-level DTC system. In order to verify the feasibility of the proposed method experimentation, the proposed method is compared with convention DTC system via simulation and experiment results.

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35

Krim, Saber, Soufien Gdaim, and Mohamed Faouzi Mimouni. "Robust Direct Torque Control with Super-Twisting Sliding Mode Control for an Induction Motor Drive." Complexity 2019 (June 24, 2019): 1–24. http://dx.doi.org/10.1155/2019/7274353.

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A field-programmable gate array- (FPGA-) based nonlinear Direct Torque Control (DTC) associated with Space Vector Modulation (SVM), Input-Output Feedback Linearization (IOFL), and second-order super-twisting speed controller is proposed to control an induction motor drive. First, the nonlinear IOFL is proposed to achieve a decoupled flux and torque control and the SVM technique is used to control the inverter switching frequency which reduces the torque ripples and noise. Next, to enhance the speed regulation, a super-twisting speed controller is added to an SVM-DTC-IOFL scheme. The nonlinear SVM-DTC-IOFL ensures a high dynamic response, good robustness under the external load disturbances. The Lyapunov theory is used to analyze the system stability. Then, this paper presents the interest of implementing the suggested SVM-DTC-IOFL using a Field-Programmable Gate Array (FPGA) circuit. The main interest of the FPGA-implementation is the reduction of the control loop delay, which is evaluated to a few microseconds, thanks to the parallel processing offered by the FPGA. The performances of the proposed control algorithm are investigated by digital simulation using the Xilinx system generator tool and an experimental implementation utilizing an FPGA-Virtex-5-ML507.

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36

Tiitinen, Pekka, Pasi Pohjalainen, and Jarkko Lalu. "The Next Generation Motor Control Method: Direct Torque Control (DTC)." EPE Journal 5, no. 1 (March 1995): 14–18. http://dx.doi.org/10.1080/09398368.1995.11463357.

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37

Lang, Bao Hua, Jian Hua Yang, and Wei Guo Liu. "Simulation Research and Analysis of an Improved Direct Torque Control System." Advanced Materials Research 466-467 (February 2012): 650–54. http://dx.doi.org/10.4028/www.scientific.net/amr.466-467.650.

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For enhancing operating efficiency of direct torque control system of salient-pole permanent magnetism synchronous machine, an improved direct torque control method which based on maximum torque per ampere(MTPA) is proposed. In the article firstly the new method theory inferential reasoning and the project short-cut method are elaborated. Then the simulation results which are comparison with conventional DTC are given using Matlab/Simulink. Finally the stable analysis and the dynamic analysis are given separately. The simulation and analysis show that the new method maintains fine dynamic property of conventional DTC, but also may raise system's stable operating efficiency effectively.

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38

Zhou, La Wu, and Shu Qi Shi. "Direct Torque Control of PMSM Based on Variable Parameter PI and Fuzzy Control." Applied Mechanics and Materials 130-134 (October 2011): 2530–34. http://dx.doi.org/10.4028/www.scientific.net/amm.130-134.2530.

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This paper discusses that conventional direct torque control (DTC) system of permanent magnet synchronous motor (PMSM) exists in the stator flux linkage and electromagnetic torque ripple faults, and puts forward a method using variable parameter PI controller and fuzzy controller respectively used to replace PI speed regulator and hysteresis comparator of the conventional direct torque control and constructs a new direct torque control system of permanent magnet synchronous motor. The experiment results showed that the improved system has good dynamic and static performance, less flux and torque ripple．

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39

Siami, Mohsen, S. Asghar Gholamian, and Mosayeb Yousefi. "A Comparative Study Between Direct Torque Control and Predictive Torque Control for Axial Flux Permanent Magnet Synchronous Machines." Journal of Electrical Engineering 64, no. 6 (November 1, 2013): 346–53. http://dx.doi.org/10.2478/jee-2013-0052.

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Abstract This paper presents a comparative study between direct torque control (DTC) and predictive torque control (PTC) of Axial Flux Permanent magnet Machines (AFPM). In conventional DTC method for permanent magnet machines, only six actives voltage vectors of inverter are used to control torque and flux of machine. But in predictive torque control, in addition to six active voltage vectors, zero voltage vectors are used to control machine. So number of voltage vectors to control AFPM increases that leads to lower ripple of torque and flux. In predictive torque control, the response of torque and flux are computed for all possible switching states of inverter at every sample time according to discrete time model of machine, and then the switching state that optimizes ripple of torque and flux, will be applied in next discrete-time interval. Simulation results which compare the results of implementation of both methods and confirm the good performance of the proposed predictive torque control are presented.

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40

Alsofyani, Ibrahim Mohd, and Kyo-Beum Lee. "Evaluation of Direct Torque Control with a Constant-Frequency Torque Regulator under Various Discrete Interleaving Carriers." Electronics 8, no. 7 (July 23, 2019): 820. http://dx.doi.org/10.3390/electronics8070820.

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Constant-frequency torque regulator–based direct torque control (CFTR-DTC) provides an attractive and powerful control strategy for induction and permanent-magnet motors. However, this scheme has two major issues: A sector-flux droop at low speed and poor torque dynamic performance. To improve the performance of this control method, interleaving triangular carriers are used to replace the single carrier in the CFTR controller to increase the duty voltage cycles and reduce the flux droop. However, this method causes an increase in the motor torque ripple. Hence, in this work, different discrete steps when generating the interleaving carriers in CFTR-DTC of an induction machine are compared. The comparison involves the investigation of the torque dynamic performance and torque and stator flux ripples. The effectiveness of the proposed CFTR-DTC with various discrete interleaving-carriers is validated through simulation and experimental results.

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41

Lotfi, Elhabib, Mustapha Elharoussi, and Elhassane Abdelmounim. "VHDL design and FPGA implementation of direct torque control for induction machines." Bulletin of Electrical Engineering and Informatics 10, no. 3 (June 1, 2021): 1220–31. http://dx.doi.org/10.11591/eei.v10i3.2345.

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This paper presents a VHDL design and an FPGA implementation of a direct torque controller (DTC) used to order induction machines (IM). The use of FPGA at high sampling frequency reduces the torque ripple while maintaining the classical DTC control structure. We have adopted a modular approach, by dividing the global entity into a set of elementary blocks designed and implemented separately. The performances of this command are to reduce the torque ripple to 0.01 Nm and the flux ripple to 0.01 wb with a circuit implementing DTC control of 3,256 LEs of complexity and 64 latency clock cycles. To evaluate the performance of our FPGA circuit implementing DTC controller, we have performed a co-simulation platform based on MATLAB/Simulink and Modelsim programs. MATLAB/Simulink was used to simulate the dynamics of the induction machine associated with its inverter and the proposed DTC control strategy was executed under the modelsim software using the VHDL fixed point. We have operated our circuit FPGA in the loop in a speed variation platform of induction machine and we have obtained the following performances: A zero overrun, response time at speeds of 300 ms and a zero static error as required in the specifications.

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42

TAHIRI, Fadila, Fatiha BEKRAOUI, Ibrahim BOUSSAID, Omar OULEDALI, and Abdelkader HARROUZ. "Direct Torque Control (DTC) SVM Predictive of a PMSM Powered by a Photovoltaic Source." Algerian Journal of Renewable Energy and Sustainable Development 01, no. 01 (June 15, 2019): 1–7. http://dx.doi.org/10.46657/ajresd.2019.1.1.1.

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This article is part of the study of the Predictive Vector PWM-based Couple Direct Control (DTC-SVM-predictive) of a permanent magnet synchronous motor (PMSM) powered by a photovoltaic (PV) source. The Direct Torque Control (DTC-SVM-Predictive) where the control of the switching frequency is well controlled and therefore the ripples are weakened at the torque and flux levels.

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43

Sakran, Rawaa Kadhim, and Assist Prof Dr Khearia Mohammed Ali. "SPEED CONTROL OF DTC-SVM FOR INDUCTION MOTOR DRIVE USING SELF-TUNING FUZZY PI CONTROLLER ANN ANFIS." Al-Qadisiyah Journal for Engineering Sciences 11, no. 3 (January 31, 2019): 293–308. http://dx.doi.org/10.30772/qjes.v11i3.562.

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This paper deals with the performance analysis of three phase Induction Motor (IM) with Direct Torque Control based Space Vector Modulation (DTC-SVM). The DTC-SVM scheme is a kind of high-performance control of IM drives to improve the ripples of torque and flux in steady state, which one drawback of conventional DTC. DTC-SVM has three Proportional-Integral (PI) controllers, one used as the PI speed controller and other PI flux controller and PI torque controller, which are utilized to produce the stator voltage references (

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44

Khasanah, Ulfatun, Supari Supari, and Sri Heranurweni. "SIMULASI PENGATURAN KECEPATAN MOTOR INDUKSI 3 PHASA DENGAN DIRECT TORQUE CONTROL MENGGUNAKAN MATLAB." eLEKTRIKA 9, no. 1 (December 4, 2018): 13. http://dx.doi.org/10.26623/elektrika.v9i1.1109.

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Induction motors are widely used in the industrial world because they have many advantages, including construction that is very simple and strong, cheap, has high efficiency, quite good power factor, and maintenance is easier. Besides the advantages of induction motors also have weaknesses, one of the disadvantages of an induction motor is not being able to maintain its speed constantly if there is a change in load. If there is a change in load, the speed of the induction motor will decrease. One method of regulating the speed of an induction motor developed in addition to vector control is the Direct Torque Control (DTC) method. The DTC control technique allows direct and separate flux and torque settings and can be done without using a speed sensor. The estimated rotor rotation, torque and flux is carried out by the DTC which is inputted with stator voltage and current. To achieve the desired flux and torque estimation is used as feedback on the control system. In this final assignment, the speed regulation of the induction motor will be simulated using the DTC method using Matlab. The results obtained through the simulation show the length of time to reach the reference speed for speeds of 500rpm and 1000 rpm is around 0.5 seconds. Keywords : Induction motor, Direct Torque Control, Matlab.

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45

Vajsz, Tibor, László Számel, and György Rácz. "A Novel Modified DTC-SVM Method with Better Overload-capability for Permanent Magnet Synchronous Motor Servo Drives." Periodica Polytechnica Electrical Engineering and Computer Science 61, no. 3 (June 8, 2017): 253. http://dx.doi.org/10.3311/ppee.10428.

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Direct torque control with space vector modulation (DTC-SVM) is one of the most promising alternatives of field-oriented control in the case of permanent magnet synchronous motor drives. This method controls the electromagnetic torque of the motor with excellent dynamics which makes it an attractive choice in the case of servo drives. In this article DTC-SVM is investigated with Matlab-Simulink simulation and it is proven that DTC-SVM has severe instability-issues during overloading and its overload-capabilities are heavily dependent on the speed. Therefore, a novel modified DTC-SVM method is proposed which is stable during overloading and its overload-capabilities are practically independent of the speed. Also, the overload-capability of the new method is superior to that of classical DTC-SVM, while the two methods are practically identical from the point of view of the torque-control dynamics and the torque-ripple generated.

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46

Zou, Gan, Tao Li, and Ren Xin Xiao. "Induction Motor Direct Torque Control Based on Multiple Neural Networks Optimized by Genetic Algorithm." Advanced Materials Research 482-484 (February 2012): 1985–89. http://dx.doi.org/10.4028/www.scientific.net/amr.482-484.1985.

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Conventional direct torque control(DTC) of induction motor has the problem of large torque ripple.In addition,the speed sensor has its deficiency.A novel DTC system based on multiple neural networks optimized by Genetic Algorithm is proposed and the structures of the proposed system are designed.Genetic algorithm was used to optimize the initial weights and thresholds of the neural networks,All parameters of the neural networks were obtained by offline training.A simulation model of induction motor DTC system was developed in Matlab／Simulink,the simulation results show the feasibility and effectiveness of the scheme

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Mahanta, Umakanta, Bhabesh Chandra Mohanta, Anup Kumar Panda, and Bibhu Prasad Panigrahi. "Fuzzy logic-based direct torque control for improvement of the fault-tolerant drive of a five-phase induction motor." Transactions of the Institute of Measurement and Control 43, no. 14 (May 31, 2021): 3120–28. http://dx.doi.org/10.1177/01423312211015556.

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Torque ripple reduction is one of the major challenges in switching table-based direct torque control (DTC) while operating for open phase faults of an induction motor, as the switching vectors are unevenly distributed. This can be minimized by increasing the level of the inverter and with the use of multi-phase motors. Fuzzy logic-based DTC is another solution to the above problem. In this paper, a comparative analysis is done between switching table-based DTC (ST-DTC) and fuzzy logic-based DTC for increasing the performance during open phase faults of a five-phase induction motor. The result shows that in fuzzy logic-based DTC with a two-level inverter, the torque ripple is reduced by 5.164% as compared with ST-DTC with a three-level inverter. The fuzzy logic-based DTC with the three-level inverter also gives better performance as compared with fuzzy logic-based DTC with the two-level inverter. The current ripple also reduced by 9.605% with respect to ST-DTC. Thus, fuzzy logic-based DTC is more suitable and cost effective for open phase fault-tolerant drives.

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Mohamad Nordin, Norjulia, Naziha Ahmad Azli, Nik Rumzi Nik Idris, Nur Huda Ramlan, and Tole Sutikno. "Constant Frequency Torque Controller for DTC with Multilevel Inverter of Induction Machines." International Journal of Power Electronics and Drive Systems (IJPEDS) 7, no. 1 (March 1, 2016): 28. http://dx.doi.org/10.11591/ijpeds.v7.i1.pp28-44.

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Direct Torque Control using multilevel inverter (DTC-MLI) with hysteresis controller suffers from high torque and flux ripple and variable switching frequency. In this paper, a constant frequency torque controller is proposed to enhance the DTC-MLI performance. The operational concepts of the constant switching frequency torque controller of a DTC-MLI system followed by the simulation results and analysis are presented. The proposed system significantly improves the DTC drive in terms of dynamic performance, smaller torque and flux ripple, and retain a constant switching frequency.

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Xu, Yan Ping, Ke Guo, and Yan Ru Zhong. "High-Performance Speed Sensorless Direct Torque Control of PMSM." Applied Mechanics and Materials 130-134 (October 2011): 2828–31. http://dx.doi.org/10.4028/www.scientific.net/amm.130-134.2828.

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A high-performance speed sensorless direct torque control (DTC) system of permanent magnet synchronous motor (PMSM) is presented in this paper. The stator flux linkage, speed, rotor position and load torque of PMSM are observed using a fourth-order Extended Kalman Filter (EKF) and a second-order Kalman Filter (KF) and the observed load torque is used for feed-forward compensation of reference torque. Simulation results clearly demonstrate the performance of speed can be improved when load torque is changed and the validity of the proposed control strategy.

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Hellali, Lallouani, and Saad Belhamdi. "Direct Torque Control of Doubly Star Induction Motor Using Fuzzy Logic Speed Controller." IAES International Journal of Artificial Intelligence (IJ-AI) 7, no. 1 (March 1, 2018): 42. http://dx.doi.org/10.11591/ijai.v7.i1.pp42-53.

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This paper presents the simulation of the control of doubly star induction motor using Direct Torque Control (DTC) based on Proportional and Integral controller (PI) and Fuzzy Logic Controller (FLC). In addition, the work describes a model of doubly star induction motor in α-β reference frame theory and its computer simulation in MATLAB/SIMULINK®.The structure of the DTC has several advantages such as the short sampling time required by the TC schemes makes them suited to a very fast flux and torque controlled drives as well as the simplicity of the control algorithm.the general- purpose induction drives in very wide range using DTC because it is the excellent solution. The performances of the DTC with a PI controller and FLC are tested under differents speeds command values and load torque.

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Journal articles on the topic 'DTC (direct torque control)'

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