Dr. Nabil TAIB:* Senior Lecturer Class A (HDR) at University A.Mira of Bejaia, Algeria.* Member of : Laboratoire de Technologie Industrielle et de l’Information (LTII)* Research interesting : Power Converters, Matrix Converters, New Power Converter Topologies, Electric Drives, Renewable Energy, Electrical Vehicles.
This paper presents a new converter topology for grid connected Hybrid Renewable Energy System (H... more This paper presents a new converter topology for grid connected Hybrid Renewable Energy System (HRES). The proposed topology named Dual Input Z-source Indirect Matrix Converter (DIZIMC) consists of an Ultra Sparse Z-source Matrix Converter (USZMC) interfacing PV and Wind Turbine (WT) to the grid. The DC link of the proposed converter is replaced by Interconnection Sources System (ISS). The ISS operates according to whether the sources produce energy or not. It allows connecting the sources individually or simultaneously and even isolates them if necessary. In the other hand, the DIZIMC provides several advantages such as reduced number of IGBTs and compact size inherited from USZMC, the use of Z-sources instead of conventional DC/DC converters keep the matrix configuration of the global structure. The global model of the proposed system was tested by simulation under Matlab/ Simpowersys environment. The obtained results show clearly freedom in connecting the operational sources, als...
Periodica Polytechnica Electrical Engineering and Computer Science
Several strategies have been suggested to optimize power extracted from the Standalone Variable S... more Several strategies have been suggested to optimize power extracted from the Standalone Variable Speed Wind Energy Conversion System (SVSWECS) using a Squirrel Cage Induction Generator (SCIG). Where, many of them use the battery as a storage unit for future use. However, the latter is assumed as an ideal component and that no maximum charging or critical limit. With the considered strategy, the generated wind power can be managed using a fast and reliable fully rugged electrical control. Indeed, the use of reliable Power Management and Control (PMC) algorithm where the battery current is well controlled. However, this solution allows maintaining the system operation in two stable modes.The considered system consists of an SCIG connected mechanically to the wind turbine through a gearbox, and electrically through a PWM rectifier to the DC bus capacitor, the latter is connected to the load and the battery through a PWM inverter and buck-boost converter respectively. In this paper, to a...
2014 International Conference on Electrical Sciences and Technologies in Maghreb (CISTEM), 2014
ABSTRACT Due to their robustness, reliability, low price and maintenance free, induction motors a... more ABSTRACT Due to their robustness, reliability, low price and maintenance free, induction motors are widely used in industrial applications. Generally, the impact of energy consumption in total input cost is significant. So, improving efficiency in electric drives using such motors is important and control strategy for minimum energy loss, as one of optimal operation strategies, can help to reach this goal. Different schemes for efficiency optimization of an induction motor drive controlled through the field oriented method were developed for steady state operation. This paper proposes an alternative to the classical techniques of Loss Model Controller by using Optimal Direct Torque Control of induction machine fed by three-phase inverter. In this approach, the main advantages of the direct torque control are combined to those of the optimal control with loss minimization. Numerical simulation results compared to measurements show good agreement and dynamic performances of the proposed method.
variable speed multi-phase drive systems are seen as serious contender to the existing three-phas... more variable speed multi-phase drive systems are seen as serious contender to the existing three-phase drives due to their distinct advantages. However we present in this work the modelling and control of matrix converter feeding a double star induction machine. In order to achieve this goal we present the model of matrix converter which is an indispensable way to design control systems more efficient, and its control strategy: based on the space vector modulation (SVM). Then we perform simulation tests for the whole converter and machine using Matlab Simulink. The results illustrate the proper functioning of the system.
—This paper presents a novel low-cost and simple phase-current reconstruction algorithm for three... more —This paper presents a novel low-cost and simple phase-current reconstruction algorithm for three-phase induction motor (IM) under direct torque control (DTC) using the information obtained from only one shunt resistor (in series with low-side switches in a conventional three-phase inverter). The aim is to develop a low-cost high-performance IM drive. The proposed algorithm is robust and very simple. It uses the dc current to reconstruct the stator currents needed to estimate the motor flux and the electromagnetic torque. A theoretical concept is developed, the modified look-up table is presented, and current-access tables are designed and used in the phase-current reconstruction. The limitations are also studied and presented. Simulation and experimental results are given to prove the ability of the proposed scheme of reproducing the performances of a traditional DTC IM drive. Index Terms—Direct torque control (DTC), induction motor (IM), sensor count reduction, single current sensor.
ABSTRACT This paper presents a novel method for phase AC motor currents reconstructing with a sin... more ABSTRACT This paper presents a novel method for phase AC motor currents reconstructing with a single current sensor in three-phase Direct Matrix Converter (DMC) drive system using SVM control technique. The main goal is to reduce the cost and to improve the reliability of drive systems that involve closed loop control strategy. For this purpose a new structure and algorithm were developed which divide the zero vector application time in two intervals and measures the phases currents using a new placement of the single Hall current sensor in Direct Matrix Converter. These proposals constitute a good solution in the low power range direct matrix converter, (below 15 kW), where reducing size and cost is the key objective. The simulation of the three-phase to three-phase Direct Matrix Converter feeding an induction motor was done to demonstrate the advantages of the proposed system. Experiments were carried out thanks to a DS1104 control broad to check the validity of the proposed method.
International Journal of Electrical Power & Energy Systems, 2013
ABSTRACT Nowadays, the power generation systems based on wind turbines is increasing continuously... more ABSTRACT Nowadays, the power generation systems based on wind turbines is increasing continuously in the world. Hence, there are intense efforts provided by researchers for the development of this area. In high power system applications, multilevel converters are a competitive alternative to the two-level inverters. In this paper, a three-level sparse matrix converter (SMC3l) associated to a grid connected variable speed wind generation (VSWG) scheme using a doubly fed induction generators (DFIGs) is investigated. Therefore, the dynamic behavior of a wind generator, including models of the wind turbine, DFIG, SMC3l control algorithm and power control is studied. Simulation results of the dynamic models of the wind generator are presented, for different operating modes sub-synchronous, synchronous and hyper-synchronous, to show the good performance and the efficiency control enhancement of the VSWG system using the proposed SMC3l.
ABSTRACT This paper presents a new Venturini based direct matrix converter output phase currents ... more ABSTRACT This paper presents a new Venturini based direct matrix converter output phase currents reconstruction method using a single current sensor. This method is proposed in order to reduce the cost and to improve the reliability of the drive with any control strategy. The proposed technique measures the phase currents using a new single Hall current sensor location in the direct matrix converter. To demonstrate the advantages of the proposed system, an experimental bench with a direct matrix converter, an induction motor and a DSP board is carried out to confirm the validity and feasibility of the proposed current reconstruction approach.
A few papers have been interested by the fixed switching frequency direct torque control fed by d... more A few papers have been interested by the fixed switching frequency direct torque control fed by direct matrix converters, where we can find just the use of direct torque controlled space vector modulated method. In this present paper, we present an improved method used for a fixed switching frequency direct torque control (DTC) using a direct matrix converter (DMC). This method is characterized by a simple structure, a fixed switching frequency which causes minimal torque ripple and a unity input power factor. Using this strategy, we combine the direct matrix converters advantages with those of direct torque control (DTC) schemes. The used technique for constant frequency is combined with the input current space vector to create the switching table of direct matrix converter (DMC). Simulation results clearly demonstrate a better dynamic and steady state performances of the proposed method.
This paper presents a novel low-cost and simple phase-current reconstruction algorithm for three-... more This paper presents a novel low-cost and simple phase-current reconstruction algorithm for three-phase induction motor (IM) under direct torque control (DTC) using the information obtained from only one shunt resistor (in series with low-side switches in a conventional three-phase inverter). The aim is to develop a low-cost high-performance IM drive. The proposed algorithm is robust and very simple. It uses
This paper presents a new converter topology for grid connected Hybrid Renewable Energy System (H... more This paper presents a new converter topology for grid connected Hybrid Renewable Energy System (HRES). The proposed topology named Dual Input Z-source Indirect Matrix Converter (DIZIMC) consists of an Ultra Sparse Z-source Matrix Converter (USZMC) interfacing PV and Wind Turbine (WT) to the grid. The DC link of the proposed converter is replaced by Interconnection Sources System (ISS). The ISS operates according to whether the sources produce energy or not. It allows connecting the sources individually or simultaneously and even isolates them if necessary. In the other hand, the DIZIMC provides several advantages such as reduced number of IGBTs and compact size inherited from USZMC, the use of Z-sources instead of conventional DC/DC converters keep the matrix configuration of the global structure. The global model of the proposed system was tested by simulation under Matlab/ Simpowersys environment. The obtained results show clearly freedom in connecting the operational sources, als...
Periodica Polytechnica Electrical Engineering and Computer Science
Several strategies have been suggested to optimize power extracted from the Standalone Variable S... more Several strategies have been suggested to optimize power extracted from the Standalone Variable Speed Wind Energy Conversion System (SVSWECS) using a Squirrel Cage Induction Generator (SCIG). Where, many of them use the battery as a storage unit for future use. However, the latter is assumed as an ideal component and that no maximum charging or critical limit. With the considered strategy, the generated wind power can be managed using a fast and reliable fully rugged electrical control. Indeed, the use of reliable Power Management and Control (PMC) algorithm where the battery current is well controlled. However, this solution allows maintaining the system operation in two stable modes.The considered system consists of an SCIG connected mechanically to the wind turbine through a gearbox, and electrically through a PWM rectifier to the DC bus capacitor, the latter is connected to the load and the battery through a PWM inverter and buck-boost converter respectively. In this paper, to a...
2014 International Conference on Electrical Sciences and Technologies in Maghreb (CISTEM), 2014
ABSTRACT Due to their robustness, reliability, low price and maintenance free, induction motors a... more ABSTRACT Due to their robustness, reliability, low price and maintenance free, induction motors are widely used in industrial applications. Generally, the impact of energy consumption in total input cost is significant. So, improving efficiency in electric drives using such motors is important and control strategy for minimum energy loss, as one of optimal operation strategies, can help to reach this goal. Different schemes for efficiency optimization of an induction motor drive controlled through the field oriented method were developed for steady state operation. This paper proposes an alternative to the classical techniques of Loss Model Controller by using Optimal Direct Torque Control of induction machine fed by three-phase inverter. In this approach, the main advantages of the direct torque control are combined to those of the optimal control with loss minimization. Numerical simulation results compared to measurements show good agreement and dynamic performances of the proposed method.
variable speed multi-phase drive systems are seen as serious contender to the existing three-phas... more variable speed multi-phase drive systems are seen as serious contender to the existing three-phase drives due to their distinct advantages. However we present in this work the modelling and control of matrix converter feeding a double star induction machine. In order to achieve this goal we present the model of matrix converter which is an indispensable way to design control systems more efficient, and its control strategy: based on the space vector modulation (SVM). Then we perform simulation tests for the whole converter and machine using Matlab Simulink. The results illustrate the proper functioning of the system.
—This paper presents a novel low-cost and simple phase-current reconstruction algorithm for three... more —This paper presents a novel low-cost and simple phase-current reconstruction algorithm for three-phase induction motor (IM) under direct torque control (DTC) using the information obtained from only one shunt resistor (in series with low-side switches in a conventional three-phase inverter). The aim is to develop a low-cost high-performance IM drive. The proposed algorithm is robust and very simple. It uses the dc current to reconstruct the stator currents needed to estimate the motor flux and the electromagnetic torque. A theoretical concept is developed, the modified look-up table is presented, and current-access tables are designed and used in the phase-current reconstruction. The limitations are also studied and presented. Simulation and experimental results are given to prove the ability of the proposed scheme of reproducing the performances of a traditional DTC IM drive. Index Terms—Direct torque control (DTC), induction motor (IM), sensor count reduction, single current sensor.
ABSTRACT This paper presents a novel method for phase AC motor currents reconstructing with a sin... more ABSTRACT This paper presents a novel method for phase AC motor currents reconstructing with a single current sensor in three-phase Direct Matrix Converter (DMC) drive system using SVM control technique. The main goal is to reduce the cost and to improve the reliability of drive systems that involve closed loop control strategy. For this purpose a new structure and algorithm were developed which divide the zero vector application time in two intervals and measures the phases currents using a new placement of the single Hall current sensor in Direct Matrix Converter. These proposals constitute a good solution in the low power range direct matrix converter, (below 15 kW), where reducing size and cost is the key objective. The simulation of the three-phase to three-phase Direct Matrix Converter feeding an induction motor was done to demonstrate the advantages of the proposed system. Experiments were carried out thanks to a DS1104 control broad to check the validity of the proposed method.
International Journal of Electrical Power & Energy Systems, 2013
ABSTRACT Nowadays, the power generation systems based on wind turbines is increasing continuously... more ABSTRACT Nowadays, the power generation systems based on wind turbines is increasing continuously in the world. Hence, there are intense efforts provided by researchers for the development of this area. In high power system applications, multilevel converters are a competitive alternative to the two-level inverters. In this paper, a three-level sparse matrix converter (SMC3l) associated to a grid connected variable speed wind generation (VSWG) scheme using a doubly fed induction generators (DFIGs) is investigated. Therefore, the dynamic behavior of a wind generator, including models of the wind turbine, DFIG, SMC3l control algorithm and power control is studied. Simulation results of the dynamic models of the wind generator are presented, for different operating modes sub-synchronous, synchronous and hyper-synchronous, to show the good performance and the efficiency control enhancement of the VSWG system using the proposed SMC3l.
ABSTRACT This paper presents a new Venturini based direct matrix converter output phase currents ... more ABSTRACT This paper presents a new Venturini based direct matrix converter output phase currents reconstruction method using a single current sensor. This method is proposed in order to reduce the cost and to improve the reliability of the drive with any control strategy. The proposed technique measures the phase currents using a new single Hall current sensor location in the direct matrix converter. To demonstrate the advantages of the proposed system, an experimental bench with a direct matrix converter, an induction motor and a DSP board is carried out to confirm the validity and feasibility of the proposed current reconstruction approach.
A few papers have been interested by the fixed switching frequency direct torque control fed by d... more A few papers have been interested by the fixed switching frequency direct torque control fed by direct matrix converters, where we can find just the use of direct torque controlled space vector modulated method. In this present paper, we present an improved method used for a fixed switching frequency direct torque control (DTC) using a direct matrix converter (DMC). This method is characterized by a simple structure, a fixed switching frequency which causes minimal torque ripple and a unity input power factor. Using this strategy, we combine the direct matrix converters advantages with those of direct torque control (DTC) schemes. The used technique for constant frequency is combined with the input current space vector to create the switching table of direct matrix converter (DMC). Simulation results clearly demonstrate a better dynamic and steady state performances of the proposed method.
This paper presents a novel low-cost and simple phase-current reconstruction algorithm for three-... more This paper presents a novel low-cost and simple phase-current reconstruction algorithm for three-phase induction motor (IM) under direct torque control (DTC) using the information obtained from only one shunt resistor (in series with low-side switches in a conventional three-phase inverter). The aim is to develop a low-cost high-performance IM drive. The proposed algorithm is robust and very simple. It uses
Uploads
Papers by Nabil Taib