RESEARCH PAPERS

direct torque control research papers




Comparative Study of Direct Torque Control of Induction Motor Using Intelligent Techniques
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ABSTRACT In this paper, direct torque control (DTC) of induction motor (IM) using intelligent techniques: artificial neural networks (ANN) and Fuzzy logic is purposed. To get the comparative study using direct torque control method, a simulation platform using 

Direct torque control of induction motor using discrete events of a hybrid system
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ABSTRACT In this paper, the direct torque control (DTC) is employed for fast and slow torque and flux control of induction motor coupled to an inverter (Inv-IM). This paper describes a combination of direct torque control (DTC) and space vector modulation (SVM) for an 

FPGA Based Implementation of Space Vector Modulated Direct Torque Control for Induction Motor Drive
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ABSTRACT In this paper, a flexible, high computation speed and cost effective field programmable gate array (FPGA) based space vector modulated (SVM) direct torque control for an induction motor is presented. Direct Torque Control (DTC) is known to produce 

Improved Direct Torque Control Load Torque Estimator with the Influence of Steering Angle for Dual Induction Motors Electric Vehicle Traction Drive System
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ABSTRACT Front-wheel direct-driven dual motors of an electric vehicle (EV) with a single controller configuration offer great potential and flexibility for improving system performance, efficiency and safety. The objective of the paper is to design a new load torque estimator 

Stator ?ux linkage estimation for direct torque control of permanent magnet synchronous machines
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The use of highly dynamic electrical drives with permanent magnet synchronous machines (PMSMs) gained a lot of interest due to their high efficiency and reliability. These drives have to provide accurate and fast torque control, for example with direct torque control (DTC). 

A Comparative Analysis Of PI And Neuro Fuzzy Controllers In Direct Torque Control Of Induction Motor Drives
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ABSTRACT The implementation of conventional DTC in Induction Motor drives consisting of PI torque controller suffers from complex tuning and Overshoot problems. One of the various methods to tackle this problem is implementation of intelligent controllers like neuro fuzzy- 

Improvement in direct torque control of induction motor using fuzzy logic duty ratio controller
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ABSTRACT This paper shows the application of fuzzy logic based duty ratio control technique to reduce torque ripple in an induction motor employing Direct Torque Control (DTC). This technique increases the number of voltage vectors beyond the available eight 

Matrix Converter Induction Motor Drive Employing Direct Torque Control Method
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ABSTRACT The presented paper deals with the implementation of the Switching Table Based Direct Torque Control (ST-DTC) in the matrix converter-fed induction motor drive. In order to improve the control of the matrix converter input power factor, the use of the simplified 

'A Novel Drive Implementation for PMSM by using direct torque control with space vector modulation
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ABSTRACT A modified Direct Torque Control (DTC) by using Space Vector Modulation (DTC- SVM) for permanent magnet synchronous machine (PMSM) drive is proposed in this paper. DTC-SVM technique improves the basic DTC performances, which features low torque 

Improvement of direct torque control in high power induction motors
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Matrix converter rather than voltage source inverter can be used as high-performance technique supplying electric motor in direct torque control (DTC). DTC's most significant deficiency in induction motor, magnetic torque ripple, can be markedly reduced by 

A Novel Seamless Direct Torque Control for Electric Drive Vehicles
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ABSTRACT Electric drive vehicles (EDV) have received much attention recently because of their environmental and energy benefits. In an EDV, the motor drive system directly influences the performance of the propulsion system. However, the available DC voltage is limited, which 

Sensorless Direct Torque Control of PMSM using Unsected Kalman Filter
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ABSTRACT This paper considers the sensorless direct torque control of a Permanent Magnet Synchronous Motor (PMSM) by using Unscented Kalman Filtering (UKF) to estimate the flux- linkage, the rotor speed and the position. UKF adapts the unscented transformation (UT) 

EKF-based sensorless direct torque control of permanent magnet synchronous motor: comparison between two different selection tables
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ABSTRACT In this paper a sensorless direct torque control (DTC) scheme of permanent magnet synchronous motor (PMSM) is proposed. To improve the performance of the classical DTC a modified control scheme based on twelve sectors instead of six is presented and a 

The Takagi-Sugeno Fuzzy Controller Based Direct Torque Control with Space Vector Modulation for Three-Phase Induction Motor
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The Direct Torque Control (DTC) has become a popular technique for three-phase Induction Motor (IM) drives because it provides a fast dynamic torque response without the use of current regulators [23][9], however, nowadays exist some other alternative DTC schemes 

Design and Implementation of TMS320C31 DSP and FPGA for Conventional Direct Torque Control (DTC) of Induction Machines
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ABSTRACT –This paper introduces a new digital logic design, which combines the DSP and FPGA to implement the conventional DTC of induction machine. The DSP will be used for floating point calculation whereas the FPGA main task is to implement the hysteresis- 

Reduction of torque ripple in direct torque control for induction motor drives using decoupled amplitude and angle of stator flux control
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ABSTRACT This paper proposes design and implementation of a direct torque controlled induction motor drive system. The method is based on decouple control of the amplitude and the angle of the stator flux reference for determining the reference stator voltage vector in 

Modified Direct Torque Control of Three-Phase Induction Motor Drives with Low Ripple in Flux and Torque
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ABSTRACT This paper proposes an algorithm for direct flux and torque controlled three phase induction motor drive systems. This method is based on control of slip speed and decoupled between amplitude and angle of reference stator flux for determining required stator 

Robust non-linear direct torque and flux control of adjustable speed sensorless PMSM drive based on SVM using a PI predictive controller
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ABSTRACT This paper presents a new sensorless direct torque control method for voltage inverter–fed PMSM. The control method is used a modified Direct Torque Control scheme with constant inverter switching frequency using Space Vector Modulation (DTC-SVM). 

Simulation Research on Speed Sensorless Direct Torque Control System Based on MRAS
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ABSTRACT The precise control and the speed identification of AC motor are the most important issues on AC drive system. According to the mathematical model of induction motor on the two-phase stationary a- reference frame and the speed identification algorithm, a 

Performance of Direct Torque Control Implemented in Speed Drive
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ABSTRACT During the last decades, the rapid development of power semiconductor devices has allowed the increased use of adjustable speed ac drives in a variety of applications, especially in the process-control industry. In many applications, the 

An Improved Scheme of Fuzzy Direct Torque Control of Transverse Flux Permanent-Magnet Machine?
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ABSTRACT Based on the analysis of working method of transverse flux permanent-magnet machine (short for TFPM) and its mathematic model, an improved scheme of fuzzy direct torque control (short for DTC) was proposed. In order to improve system response speed 

A Simplfied Voltage Vector Selection Strategy for Direct Torque Control
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ABSTRACT The direct torque control (DTC) for permanent magnet synchronous motor (PMSM) under the control of switching table suffers from high torque ripple and variable switching frequency. For PMSM DTC system, voltage vector selection strategy as the hysteresis 

Fault Detection of Broken Rotor Bars Using Stator Current Spectrum for the Direct Torque Control Induction Motor
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ABSTRACT The numerous qualities of squirrel cage induction machines enhance their use in industry. However, various faults can occur, such as stator short-circuits and rotor failures. In this paper, we use a technique based on the spectral analysis of stator current in order to 

Direct Torque Control Algorithm for the Reduction of Common Mode Voltage Using Look-up Tables
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ABSTRACT This paper has described the application of the newly developed direct torque control (DTC) scheme for the reduction of common mode voltage of an induction motor drive. This DTC scheme for the reduction of common mode voltage does not use any zero 

Digital Simulation of Direct Torque Fuzzy Control of PMSM Servo System
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ABSTRACT Fuzzy logic is recently getting increasing emphasis in soft computing applications in the recent days. This paper presents an application of the fuzzy logic scheme to control the speed of an AC servo systemthe same is proposed for a space vector pulse width 

Improved Multimachine Multiphase Electric Vehicle Drive System Based on New SVPWM Strategy and Sliding Mode-Direct Torque Control
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ABSTRACT This paper presents a Sliding Mode Direct Torque Control (SM-DTC) of a multiphase Induction Machine (IM) supplied with multiphase voltage source inverter (VSI) controlled by a new algorithm of Space Vector Pulse Width Modulation (SVPWM) for a 

Efficiency improvement due to direct torque and flux three levels three areas control method applied to small hydroelectric power plant
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The paper presents a description of a new DTFC3L3A (direct torque and flux control three levels three areas) control method of induction machine as well as its comparison with the DTC method. The basis for the comparison is the switching frequency of described 

Electronic differential with direct torque fuzzy control for vehicle propulsion system
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ABSTRACT We model an electronic differential that will offer the best vehicle stability on a curved road. The proposed traction system consists of two permanent magnet synchronous (PMS) machines that ensure the drive of two back-driving wheels. The contribution of each 

Improved Direct Torque Control for Induction Machine Drives Based on Fuzzy Sector Theory
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ABSTRACT Here, a new fuzzy direct torque control algorithm for induction motors is proposed. As in the classical direct torque control, the inverter gate control signals directly come from the optimum switching voltage vector look-up table, the best voltage space vector 

Direct torque control of induction motors with fuzzy minimization torque ripple
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ABSTRACT Direct torque control (DTC) is a new method of induction motor control. The key issue of the DTC is the strategy of selecting proper stator voltage vectors to force stator flux and developed torque within a prescribed band. Due to the nature of hysteresis control 

The use of the direct control of stator flux and kalman filter for the direct torque Control of Induction Machine
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ABSTRACT The direct torque control is a good solution to problems related to robustness and dynamics encountered in vector control with rotor flux oriented. The current research is directed towards improving the performance of this technique, whose the main problems 

Study on Improved Nonlinear Hysteresis Controller for Direct Torque Control of Induction Motor
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ABSTRACT For solving high torque ripple in low speed of classic direct torque control (DTC), a novel nonlinear double-level hysteresis controller of flux and torque of direct torque control for induction motor drives was proposed, which based on analyzing the rule of torque 

Improved direct torque control of induction motor using fuzzy logic based duty ratio controller
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ABSTRACT Classical DTC has inherent disadvantages such as: problems during starting resulting from the null states, the compulsory requirement of torque and flux estimators, and torque ripple. In this paper the improved response of the DTC is achieved by varying the 

Efficiency-Optimized Variable Structure Direct Torque Control for Synchronous Reluctance Motor Drives
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Direct torque control (DTC) is known to produce fast response and robust control in ac adjustable-speed drives. However, in the steady-state operation, notable torque, flux and current pulsations occur. A new direct torque and flux control strategy based on variable- 

RANDOM ZERO VECTOR DISTRIBUTION PWM ALGORITHM FOR DIRECT TORQUE CONTROL OF INDUCTION MOTOR DRIVE FOR NOISE REDUCTION
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ABSTRACT The basic direct torque control algorithm gives large ripples in torque, flux and current in steady state, which results in acoustical noise and incorrect speed estimations. The conventional SVPWM algorithm gives good performance for control of induction motor 

A Combined Stator Vector Control–SVM-Direct Torque Control for High Performance Induction Machine Drives
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Electrical drives based on induction motors are the most widely used electromechanical systems in modern industry. Due to their reliability, ruggedness, simple mechanical structure, easy maintenance and relatively low cost, induction motors are attractive for use 

Improved direct torque control for single-phase induction motor drives
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ABSTRACT This paper illustrated a modified strategy of direct torque control for single-phase induction motors. The proposed strategy was based on classical six-sector hysteresis-type direct torque control scheme developed by using stator reference frame. The modification 

Modelling and simulation of FPGA based direct torque control of induction motor drive
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ABSTRACT Modern AC drives require a fast digital realization of many mathematical operations concerning control and estimator's algorithms, which are time consuming. Therefore developing of custom-built digital interfaces as well as digital data processing 

Reconfigurable Direct Torque and Flux Control with Torque Ripple Reduction
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ABSTRACT This work presents a reconfigurable direct torque and flux control strategy which guarantees good performance in presence of faults in the actuator, the voltage source inverter. It is based on a new quantification of the stator flux vector position means a new 

COMPARATIVE STUDY BETWEEN A DOUBLE FED INDUCTION MACHINE AND DOUBLE STAR INDUCTION MACHINE USING DIRECT TORQUE CONTROL DTC
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ABSTRACT This paper describes the comparative study between two machines, a double fed induction machine and a double star induction machine, using direct torque control (DTC). In a double feed induction machine (DFIM), the stator is feed by a fixed network while the 

Sensor Fault Tolerant of Direct Torque Control in Induction Motor Drives
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ABSTRACT Direct torque control (DTC) has over the years, become one of the most popular methods of control for induction motors (IM) drive systems. The advances in FPGA technology have been extraordinary. Numerous industrial applications such as power 

ONLINE MACHINE PARAMETER ESTIMATION FOR DIRECT TORQUE CONTROL
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For DTC control monitoring the actual value of stator resistance is important. Based on previous investigations it is shown that the accuracy of online stator resistance monitoring of AC-machines fed by PWM inverters when using the superposition method suffers from 

Simulation based Direct Torque Control of Induction Motor with Stator Flux Reimbursement
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ABSTRACT This paper places of interest Direct Torque control (DTC) strategy for induction motor based on fuzzy logic control. Many methods of controlling the performance of induction motors exist. The direct torque control deserves special attention because of 

Electric Differential with Svpwm Direct Torque Control Using Five-leg Inverter For Electric Vehicles
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ABSTRACT The stability control of two separate electric vehicle (EV) motors by using only single five-leg inverter (FLI) is the motivation of this study. This paper proposes an electric differential (ED) in a FLI to serve dual separate induction motor (IM) drive-based wheels of 

A Loss Minimization Control Strategy for Direct Torque Controlled Interior Permanent Magnet Synchronous Motors
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ABSTRACT The main objective of this a paper is to improve the efficiency of permanent magnet synchronous motors (PMSMs) by using an improved direct torque control (DTC) strategy. The basic idea behind the proposed strategy is to predict the impact of a small 

A COMPARITVE STUDY BETWEEN VECTOR CONTROL AND DIRECT TORQUE CONTROL OF INDUCTION MOTOR USING MATLAB SIMULINK
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This thesis project studies and compares two of the most commonly used electric driving methods of induction motors (IM). These methods, which have been used for three decades are Field Orientation Control (FOC) and Direct Torque Control (DTC). Theoretical 

Direct Torque Control of 5-phase 10/8 Switched Reluctance Motor by Using Fuzzy Method
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ABSTRACT A Switched Reluctance Motor (SRM) has several desirable features, including simple construction, high reliability and low cost. However, it suffers from large torque ripple and large noise. In addition, highly non-uniform torque output and magnetization 

Direct Torque Control of 5-Phase 10/8 Switched Reluctance Motors
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ABSTRACT A switched Reluctance motor (SRM) has several desirable features, including simple construction, high reliability and low cost. However, it suffers from large torque ripple, highly non-uniform torque output and magnetization characteristics and large noise. 

Stator-Flux-Oriented Based Encoderless Direct Torque Control for Synchronous Reluctance Machines Using Sliding Mode Approach
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ABSTRACT In this paper a sliding-mode torque and flux control is designed for encoderless synchronous reluctance motor drive. The sliding-mode plus PI controllers are designed in the stator-flux field oriented reference frame which is able to track the mentioned reference 

The Speed and Torque Control of Direct Current Servo Motors by using Cascade Fuzzy PI Controller
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ABSTRACT Direct current servo motors (DCSMs) are frequently used in the areas of industry which require different operating conditions. Traditional PI controllers with constant coefficients are not sufficient for the speed and torque control of these motors, because of 

Simulation and Analysis of Vector Control and Direct Torque Control for High-Speed Motorized Spindles
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ABSTRACT Vector control (VC) and Direct torque control (DTC) are both high-performance drive control methods for high-speed motorized spindles, and their control performances have a significant impact on the machining quality of the spindle. To study VC, DTC and 

Modified direct torque control for single-phase induction motor drives
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ABSTRACT This paper illustrated a modified strategy of direct torque control for single-phase induction motors. The proposed strategy was based on classical six-sector hysteresis-type direct torque control scheme developed by using stator reference frame. The modification 

Direct torque control of 4 phase 8/6 switched reluctance motor drive for constant torque load
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ABSTRACT The Switched Reluctance Motor (SRM) Drives have attracted the attention of many researchers in the recent past because of advantages like simple mechanical structure, adaptability to harsh environments like coal mining etc. But it has one main disadvantage 

Enhanced direct torque control for doubly fed induction machine by active learning method using indirect matrix converter
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ABSTRACT The term Direct Torque Control (DTC) originally is referred to a strategy which provides good transient and steady-state performance but it has also some negative aspects, such as non accuracy of flux, torque estimator, torque and flux ripple caused by 

StudySimulation of Direct Torque Control Method For Three Phase Induction Motor Drives
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ABSTRACT The basic evolution of direct torque control from other drive types is explained. Qualitative comparisons with other drives are included. The basic concepts behind direct torque control are clarified. An explanation of direct self control and the field-orientation 

Non-Linear and Optimal Direct Torque Control of AC Drive using Fuzzy-GA
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ABSTRACT This paper implements and compares Fuzzy-GA Direct Torque Control of AC drive with a fuzzy logic stand alone control architecture model. Fuzzy rules are generated by designers using trial and error method. Genetic Algorithm based fuzzy rules increase 

Direct Instantaneous Torque Control of Switched Reluctance Motors
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ABSTRACT The main disadvantage of switched reluctance motors (SRM) is the higher torque ripple compared to conventional machines, which result in acoustic noise and vibration. The torque pulsations in an SRM are due to the highly non-linear and discrete nature of torque 

Fuzzy Logic Based Direct Torque Control of Induction Motor for Minimization of TorqueRipples
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ABSTRACT The induction motor, which is the most widely used motor type in the industry, has been favored because of its good selfstarting capability, simple and rugged structure, low cost and reliability etc. Over last few decades, Direct Torque Control (DTC) is known to 

Adaptive Fuzzy PI of Double Wheeled Electric Vehicle Drive Controlled by Direct Torque Control
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ABSTRACT This paper presents a novel speed control design of electric vehicle (EV) to improve the comportment and stability under different road constraints condition. The control circuit using adaptive fuzzy PI controller is proposed. Parameters which guide the functioning of 

Direct Torque with Fuzzy Logic Ripple Reduction based Stator Flux Vector Control
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ABSTRACT The major disadvantages of the conventional direct torque control (DTC) drive is the steady state ripples in torque and flux. Using space vector control (SVM) method reduces the torque and stator flux ripples. In this paper, the use of SVM technique, a torque fuzzy 

Neuro Fuzzy Based Direct Torque Control for Switched Reluctance Motor Drive
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ABSTRACT Direct torque control (DTC) of Switched reluctance motor is known to have simple control structure with comparable performance to that of field oriented control techniques. However, the role of optimal selection of the voltage space vector is one of the weakest 

Improving Reliability and Productivity of an Aluminum Extruder by Implementation of Direct Torque Control Technology
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ABSTRACT Problem statement: The linear motor drive is widely used in driving an extrusion puller in an aluminum extrusion industry. The main disadvantage of this drive is manual and step-wise torque control. This research was done to replace the linear motor drive by AC 

Direct Torque Control of Double Star Synchronous Machine
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ABSTRACT In the field of high power drives, the double star synchronous machines constitute an advantageous choice compared to classical synchronous machines, because of the relatively low torque ripple produced. This study describes the control of double armature 


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