Abdoul N'Diaye | Université de Technologie de Belfort-Montbéliard (UTBM) (original) (raw)

Papers by Abdoul N'Diaye

Research paper thumbnail of Optimal design of geometrical and physical parameters of permanent magnet machines in the purpose to reduce its vibratory behavior

ABSTRACT Permanent magnet synchronous machines (PMSM) have high efficiency and torque density, an... more ABSTRACT Permanent magnet synchronous machines (PMSM) have high efficiency and torque density, and have already been employed in hybrid electric vehicles. However, one of their disadvantages is the inherent cogging torque, which is a kind of torque ripple and it would be better to minimize. This torque, sometimes, can be an important source of noise and vibrations. In this paper, the effect of the geometric characteristics of the stator on the vibratory behavior of electrical machines is illustrated. The optimum geometry for obtaining a minimum vibration level has been reached. For this purpose, an approach by using the Artificial Intelligent (AI) and the Finite Element Method (FEM) is proposed to solve the magneto-mechanical problem of geometrical parameters identification in the optimization process. The obtained results by Genetic Algorithm (GA) method have been presented.

Research paper thumbnail of Equivalent consumption minimization strategy for fuel cell hybrid electric vehicle considering fuel cell degradation

Equivalence factor plays a key role in equivalent consumption minimization strategy and due to it... more Equivalence factor plays a key role in equivalent consumption minimization strategy and due to its strong relevance with driving cycle, the change of driving cycle can be reflected by the equivalence factor and at the same time different driving cycle has different equivalence factor. In this paper, the optimal equivalence factor as one of the control variables is calculated by dynamic programming. The three initial maps of the optimal equivalence factor concerning state of charge and power demand are formulated over NEDC, UDDS, 10-15 mode cycle respectively. These maps are fused together to obtain the final one for simulation analysis. Compared with the rule-based control strategy, the proposed method has a better fuel economy over NEDC, UDDS, 10-15 mode cycle.

Research paper thumbnail of Part 1: Mobypost vehicle's powertrain modeling, simulation and sizing

HAL (Le Centre pour la Communication Scientifique Directe), Feb 6, 2013

This paper describes the methodology used to choose the best vehicle powertrain architecture acco... more This paper describes the methodology used to choose the best vehicle powertrain architecture according to driving cycles of La Poste (French Post) missions. The first part explain the measurement strategy of real postman drive cycles as close as possible to those that the MobyPost vehicles will have to follow. In the second step, the power train is modeled and simulated by using two different programs with various energy managements. In the last part, degraded mode conditions are studied.

Research paper thumbnail of Numerical modelling and experimental analysis of vibratory and acoustics behaviours of a special design squirrel-cage three-phase asynchronous machine

... 127 6.1 PREDICTION OF A MOMENT-ROTATION RELATIONSHIP OF COMPOSITE CONNECTIONS ..... 128 ... 1... more ... 127 6.1 PREDICTION OF A MOMENT-ROTATION RELATIONSHIP OF COMPOSITE CONNECTIONS ..... 128 ... 136 ..... 6.2.4 Predicîion rotational stiilkess of composite connections 138 ..... ...

Research paper thumbnail of Amélioration de la fiabilité d'un convertisseur DC/DC boost entrelacé flottant pour des systèmes pile à combustible et photovoltaïques

HAL (Le Centre pour la Communication Scientifique Directe), Jun 7, 2016

RESUME-Dans les systèmes pile à combustible et photovoltaïques, les convertisseurs DC/DC doivent ... more RESUME-Dans les systèmes pile à combustible et photovoltaïques, les convertisseurs DC/DC doivent répondre à de nombreuses problématiques en termes de compacité, gain d'élévation, réduction de l'ondulation de courant d'entrée, efficacité énergétique et fiabilité en cas de défauts d'interrupteur de puissance. Dans cet article, un convertisseur DC/DC boost entrelacé flottant a été choisi afin de respecter ces contraintes pour ce type d'application. Malgré la présence de redondance, un défaut d'interrupteur de puissance peut détériorer la fiabilité du convertisseur en raison des contraintes électriques supplémentaires sur les composants. L'objectif de cet article est de proposer un algorithme de détection de défauts d'interrupteur de puissance basé sur les vecteurs de Park et une gestion des modes de fonctionnement dégradé. Les résultats de simulation et expérimentaux obtenus démontrent les performances de l'algorithme de détection à améliorer la fiabilité du convertisseur.

Research paper thumbnail of Equivalent consumption minimization strategy for hybrid electric vehicle powered by fuel cell, battery and supercapacitor

Equivalence factor plays a key role in equivalent consumption minimization strategy and due to it... more Equivalence factor plays a key role in equivalent consumption minimization strategy and due to its strong relevance with driving cycle, the change of driving cycle can be reflected by the equivalence factor and at the same time different driving cycle has different equivalence factor. In this paper, the optimal equivalence factor as one of the control variables is calculated by dynamic programming. The three initial maps of the optimal equivalence factor concerning state of charge and power demand are formulated over NEDC, UDDS, 10-15 mode cycle respectively. These maps are fused together to obtain the final one for simulation analysis. Compared with the rule-based control strategy, the proposed method has a better fuel economy over NEDC, UDDS, 10-15 mode cycle.

Research paper thumbnail of Stochastic optimisation-based methods for the identification of the physical parameters of a metal hydride tank

International Journal of Hydrogen Energy

Research paper thumbnail of Experimental characterisation of the heat behaviour of a PEMFC in order to monitor its degradation

2022 10th International Conference on Systems and Control (ICSC)

Research paper thumbnail of Feasibility of efficiency improvement in a fuel cell system powered by a metal hydride tank

IECON 2022 – 48th Annual Conference of the IEEE Industrial Electronics Society

Research paper thumbnail of Evaluation of the Performance Degradation of a Metal Hydride Tank in a Real Fuel Cell Electric Vehicle

Energies

In a fuel cell electric vehicle (FCEV) powered by a metal hydride tank, the performance of the ta... more In a fuel cell electric vehicle (FCEV) powered by a metal hydride tank, the performance of the tank is an indicator of the overall health status, which is used to predict its behaviour and make appropriate energy management decisions. The aim of this paper is to investigate how to evaluate the effects of charge/discharge cycles on the performance of a commercial automotive metal hydride hydrogen storage system applied to a real FCEV. For this purpose, a mathematical model is proposed based on uncertain physical parameters that are identified using the stochastic particle swarm optimisation (PSO) algorithm combined with experimental measurements. The variation of these parameters allows an assessment of the degradation level of the tank’s performance on both the quantitative and qualitative aspects. Simulated results derived from the proposed model and experimental measurements were in good agreement, with a maximum relative error of less than 2%. The validated model was used to esta...

Research paper thumbnail of Dynamic and Static characterization of the absorption process in metal hydride tanks for Mobile Applications

2021 IEEE Vehicle Power and Propulsion Conference (VPPC), 2021

Hydrogen as an energy vector has become a good candidate in the field of on-board systems. Howeve... more Hydrogen as an energy vector has become a good candidate in the field of on-board systems. However, its storage is currently a challenge to be solved. This work presents a test bench for the characterization of metal hydrides tanks for stationery and transport applications. Dynamic and static characterizations are realized through describing the process of the charge of these tanks containing AB5 (LaNi5) hydride type. The final goal is to determine the thermodynamic parameter to implement an energy management of the hydride tank associated to a fuel cell.

Research paper thumbnail of Estimation of the State of Charge of a Hydride Hydrogen Tank for Vehicle Applications

2017 IEEE Vehicle Power and Propulsion Conference (VPPC), 2017

Metal hydrides have been receiving a great attention as an effective and safe way to store hydrog... more Metal hydrides have been receiving a great attention as an effective and safe way to store hydrogen. Metal hydride-based hydrogen tank has a huge potential for the application of on-board hydrogen storage on the fuel cell electric vehicles. When the metal hydrides aging with cycle, the capacity of the hydrogen tank decreases. In this work, a mathematical model to estimate the hydrogen supply capability and observe degeneration conditions with cycle life of a hydride tank is presented. The used method is based on the exploitation of properties of Pressure-Composition-Temperature (PCT) isotherm of hydrogenation process in the hydride tank and the empirical modeling using experimental data. The established model can be used to describe the hydrogen supply capability and the concentration in the tank with equilibrium pressure and temperature under static state. This model could also be used to determine the aging degree of the tank after several charge and discharge cycles.

Research paper thumbnail of On-line state of charge estimation of embedded metal hydride hydrogen storage tank based on state classification

Journal of Energy Storage, 2021

With the further deterioration of environment and the depletion of fossil fuels, the alternative ... more With the further deterioration of environment and the depletion of fossil fuels, the alternative energy sources are urgently needed to be discovered. Hydrogen holds great promise thanks to its unlimited resources, high energy density and the environmentally friendly nature. However, its low volume density under normal temperature and pressure becomes the main challenge for on-board storage.

Research paper thumbnail of Fault Detection through Magnetic Field Measurement of Permanent Magnet Machines with Reversed Structure

2017 IEEE Vehicle Power and Propulsion Conference (VPPC), 2017

The aims of this work is to appreciate the degree of relevance of the use the external magnetic f... more The aims of this work is to appreciate the degree of relevance of the use the external magnetic field for diagnosis applications in the field of electrical traction provided by external rotor permanent magnets synchronous machines. A numerical modeling using the finite element method has been developed to simulate the behavior of the machine in operating generator in healthy and in faulty modes. Furthermore, the principle of the method of measuring the external magnetic field and the optimization of the magnetic sensors positions are explained. The study was validated by an experimental approach.

Research paper thumbnail of Design and practical study of three phase interleaved boost converter for fuel cell electric vehicle

Journal of Power Sources, 2020

Even being far from spared by the new challenges, the automotive sector is at the heart of change... more Even being far from spared by the new challenges, the automotive sector is at the heart of changes as it produces of greenhouse gas emissions and it is responsible for air pollution and global warming. So, moving towards electricity productions based on green/clean energy has become increasingly important. The fuel cell (FC) produces electrical energy from hydrogen and oxygen without the release of pollutants. Its use in the automotive sector is therefore considered in the long term to address the problem of sustainable mobility. However, some matters are persisting due to the feeble voltage generated at the fuel cell outflow. Eventually, a DC/DC converter turns to be necessary to enhance this voltage to the appropriate standard of the DC bus voltage. In order to fulfill all requirements for electrical vehicle applications using fuel cell as main energy, the interleaved boost DC/DC and isolated DC/DC converters were adopted to provide better performance. This research work focuses on the analysis and design approach for the new topology of DC/DC power converter that interface a fuel cell used an electric vehicle. The proposed interleaved boost converter is validated experimentally by the obtained results from a prototype that has been built and tested in our laboratory based on DSP1104 and FPGA. The interleaved converter which ensures the minimization of the output current ripples of the fuel cell and guarantee the reliability of the system.

Research paper thumbnail of Investigation of optimal control for vibration and noise reduction in-wheel switched reluctance motor used in electric vehicle

Mathematics and Computers in Simulation, 2019

In this paper, an appropriate control technique is investigated to reduce vibration and noise in ... more In this paper, an appropriate control technique is investigated to reduce vibration and noise in switched reluctance motors (SRM). Vibrations are mainly caused by radial force acting on salient poles of the motor. In order to determine this force, a no linear model for switched reluctance motor is developed, based on finite element calculation of inductance and natural frequencies of stator. Thus, the force component at a frequency close to natural frequency of stator should be reduced. In this context, a method of two steps commutation is also applied. To verify the effectiveness of the proposed method, the electro-mechanicalacoustic developed model makes possible to define theoretical spectrum of vibration and noise with conventional and proposed method. The simulation results showed that the proposed method performs better in terms of vibration and noise reduction. Highlights  Low cost switched reluctance motor (SRM) has become an attractive candidate for electric vehicle propulsion system  SRMs fed though half-bridge converters are characterized by significant vibration and noise.  An efficient method is applied for the reduction of vibration and noise in SRMs.

Research paper thumbnail of New dynamic modeling of a real embedded metal hydride hydrogen storage system

International Journal of Hydrogen Energy, 2019

In this work, the dynamic responses of the on board hydrogen storage system with commercially ava... more In this work, the dynamic responses of the on board hydrogen storage system with commercially available metal hydride tanks are investigated based on the database collected from fuel cell electric vehicles operation experiments. A mathematical model considering the heat transfer measured by the temperature control system is developed to analyze the absorption and desorption reaction during operation. As a seal container filled with unknown metal hydride, the practical used hydrogen storage tank is a gray box in the embedded storage system. Without the information about characteristics of material, current operation state and degradation degree, the parameters of the model are uncertain. Particle swarm optimization (PSO) algorithm is applied to search for the optimal parameter set. The simulation results of the hydrogen storage system model using these parameters show great agreements with the real operating data under different temperature conditions; the maximal error is lower than 9%.

Research paper thumbnail of A Fault Severity Index for Stator Winding Faults Detection in Vector Controlled PM Synchronous Motor

Journal of Electrical Engineering and Technology, 2015

Stator turn faults in permanent magnet synchronous motors (PMSMs) are more dangerous than those i... more Stator turn faults in permanent magnet synchronous motors (PMSMs) are more dangerous than those in induction motors (IMs) because of the presence of spinning rotor magnets that can be turned off at will. Condition monitoring and fault detection and diagnosis of the PMSM have been receiving a growing amount of attention among scientists and engineers in the past few years. The aim of this study is to propose a new detection technique of stator winding faults in a three-phase PMSM. This technique is based on the image analysis and recognition of the stator current Concordia patterns, and will allow the identification of turn faults in the stator winding as well as its correspondent fault index severity. A test bench of a vector controlled PMSM motor behaviors under short circuited turn in two phases stator windings has been built. Some experimental results of the phase to phase short circuits have been performed for diagnosis purpose.

Research paper thumbnail of Artificial neural network‐based fault diagnosis in the AC–DC converter of the power supply of series hybrid electric vehicle

IET Electrical Systems in Transportation, 2016

AC-DC converter switches of the drive train of series hybrid electric vehicles (SHEVs) are genera... more AC-DC converter switches of the drive train of series hybrid electric vehicles (SHEVs) are generally exposed to the possibility of outbreak open-phase faults because of troubles with the switching devices. In this framework, the present study proposes an artificial neural network (ANN)-based method for fault diagnosis after extraction of a new pattern. The new pattern under AC-DC converter failure in view of SHEV application has been used for train-proposed ANN. To achieve this goal, four different levels of switches fault are considered on the basis of both simulation and experimental results. Ensuring the accuracy and generalisation of the introduced pattern, several parameters have been considered, namely: capacitor size changes, load, and speed variations. The experimental results validate the simulation results thoroughly.

Research paper thumbnail of Numerical modelling and experimental analysis of vibratory and acoustics behaviours of a special design squirrel-cage three-phase asynchronous machine

International Aegean Conference on Electrical Machines and Power Electronics and Electromotion, Joint Conference, 2011

ABSTRACT The paper presents a comparison between the obtained results from testing a special desi... more ABSTRACT The paper presents a comparison between the obtained results from testing a special design 5 kW squirrel-cage three-phase asynchronous machine and the numerical model of the same machine, simulated under the FLUX2D Finite Element Software. The aim is to validate the numerical model in the loaded and unloaded cases. The resulting model will be used for further research into the vibratory behaviour and noise of the motor. In this paper, an experimental approach is used to show the influence of load on motor vibration and noise levels. The relation between the natural frequencies of the stator, the frequencies of the forces causing vibration and the noise of the motor, is studied by analysing several sets of measurements.

Research paper thumbnail of Optimal design of geometrical and physical parameters of permanent magnet machines in the purpose to reduce its vibratory behavior

ABSTRACT Permanent magnet synchronous machines (PMSM) have high efficiency and torque density, an... more ABSTRACT Permanent magnet synchronous machines (PMSM) have high efficiency and torque density, and have already been employed in hybrid electric vehicles. However, one of their disadvantages is the inherent cogging torque, which is a kind of torque ripple and it would be better to minimize. This torque, sometimes, can be an important source of noise and vibrations. In this paper, the effect of the geometric characteristics of the stator on the vibratory behavior of electrical machines is illustrated. The optimum geometry for obtaining a minimum vibration level has been reached. For this purpose, an approach by using the Artificial Intelligent (AI) and the Finite Element Method (FEM) is proposed to solve the magneto-mechanical problem of geometrical parameters identification in the optimization process. The obtained results by Genetic Algorithm (GA) method have been presented.

Research paper thumbnail of Equivalent consumption minimization strategy for fuel cell hybrid electric vehicle considering fuel cell degradation

Equivalence factor plays a key role in equivalent consumption minimization strategy and due to it... more Equivalence factor plays a key role in equivalent consumption minimization strategy and due to its strong relevance with driving cycle, the change of driving cycle can be reflected by the equivalence factor and at the same time different driving cycle has different equivalence factor. In this paper, the optimal equivalence factor as one of the control variables is calculated by dynamic programming. The three initial maps of the optimal equivalence factor concerning state of charge and power demand are formulated over NEDC, UDDS, 10-15 mode cycle respectively. These maps are fused together to obtain the final one for simulation analysis. Compared with the rule-based control strategy, the proposed method has a better fuel economy over NEDC, UDDS, 10-15 mode cycle.

Research paper thumbnail of Part 1: Mobypost vehicle's powertrain modeling, simulation and sizing

HAL (Le Centre pour la Communication Scientifique Directe), Feb 6, 2013

This paper describes the methodology used to choose the best vehicle powertrain architecture acco... more This paper describes the methodology used to choose the best vehicle powertrain architecture according to driving cycles of La Poste (French Post) missions. The first part explain the measurement strategy of real postman drive cycles as close as possible to those that the MobyPost vehicles will have to follow. In the second step, the power train is modeled and simulated by using two different programs with various energy managements. In the last part, degraded mode conditions are studied.

Research paper thumbnail of Numerical modelling and experimental analysis of vibratory and acoustics behaviours of a special design squirrel-cage three-phase asynchronous machine

... 127 6.1 PREDICTION OF A MOMENT-ROTATION RELATIONSHIP OF COMPOSITE CONNECTIONS ..... 128 ... 1... more ... 127 6.1 PREDICTION OF A MOMENT-ROTATION RELATIONSHIP OF COMPOSITE CONNECTIONS ..... 128 ... 136 ..... 6.2.4 Predicîion rotational stiilkess of composite connections 138 ..... ...

Research paper thumbnail of Amélioration de la fiabilité d'un convertisseur DC/DC boost entrelacé flottant pour des systèmes pile à combustible et photovoltaïques

HAL (Le Centre pour la Communication Scientifique Directe), Jun 7, 2016

RESUME-Dans les systèmes pile à combustible et photovoltaïques, les convertisseurs DC/DC doivent ... more RESUME-Dans les systèmes pile à combustible et photovoltaïques, les convertisseurs DC/DC doivent répondre à de nombreuses problématiques en termes de compacité, gain d'élévation, réduction de l'ondulation de courant d'entrée, efficacité énergétique et fiabilité en cas de défauts d'interrupteur de puissance. Dans cet article, un convertisseur DC/DC boost entrelacé flottant a été choisi afin de respecter ces contraintes pour ce type d'application. Malgré la présence de redondance, un défaut d'interrupteur de puissance peut détériorer la fiabilité du convertisseur en raison des contraintes électriques supplémentaires sur les composants. L'objectif de cet article est de proposer un algorithme de détection de défauts d'interrupteur de puissance basé sur les vecteurs de Park et une gestion des modes de fonctionnement dégradé. Les résultats de simulation et expérimentaux obtenus démontrent les performances de l'algorithme de détection à améliorer la fiabilité du convertisseur.

Research paper thumbnail of Equivalent consumption minimization strategy for hybrid electric vehicle powered by fuel cell, battery and supercapacitor

Equivalence factor plays a key role in equivalent consumption minimization strategy and due to it... more Equivalence factor plays a key role in equivalent consumption minimization strategy and due to its strong relevance with driving cycle, the change of driving cycle can be reflected by the equivalence factor and at the same time different driving cycle has different equivalence factor. In this paper, the optimal equivalence factor as one of the control variables is calculated by dynamic programming. The three initial maps of the optimal equivalence factor concerning state of charge and power demand are formulated over NEDC, UDDS, 10-15 mode cycle respectively. These maps are fused together to obtain the final one for simulation analysis. Compared with the rule-based control strategy, the proposed method has a better fuel economy over NEDC, UDDS, 10-15 mode cycle.

Research paper thumbnail of Stochastic optimisation-based methods for the identification of the physical parameters of a metal hydride tank

International Journal of Hydrogen Energy

Research paper thumbnail of Experimental characterisation of the heat behaviour of a PEMFC in order to monitor its degradation

2022 10th International Conference on Systems and Control (ICSC)

Research paper thumbnail of Feasibility of efficiency improvement in a fuel cell system powered by a metal hydride tank

IECON 2022 – 48th Annual Conference of the IEEE Industrial Electronics Society

Research paper thumbnail of Evaluation of the Performance Degradation of a Metal Hydride Tank in a Real Fuel Cell Electric Vehicle

Energies

In a fuel cell electric vehicle (FCEV) powered by a metal hydride tank, the performance of the ta... more In a fuel cell electric vehicle (FCEV) powered by a metal hydride tank, the performance of the tank is an indicator of the overall health status, which is used to predict its behaviour and make appropriate energy management decisions. The aim of this paper is to investigate how to evaluate the effects of charge/discharge cycles on the performance of a commercial automotive metal hydride hydrogen storage system applied to a real FCEV. For this purpose, a mathematical model is proposed based on uncertain physical parameters that are identified using the stochastic particle swarm optimisation (PSO) algorithm combined with experimental measurements. The variation of these parameters allows an assessment of the degradation level of the tank’s performance on both the quantitative and qualitative aspects. Simulated results derived from the proposed model and experimental measurements were in good agreement, with a maximum relative error of less than 2%. The validated model was used to esta...

Research paper thumbnail of Dynamic and Static characterization of the absorption process in metal hydride tanks for Mobile Applications

2021 IEEE Vehicle Power and Propulsion Conference (VPPC), 2021

Hydrogen as an energy vector has become a good candidate in the field of on-board systems. Howeve... more Hydrogen as an energy vector has become a good candidate in the field of on-board systems. However, its storage is currently a challenge to be solved. This work presents a test bench for the characterization of metal hydrides tanks for stationery and transport applications. Dynamic and static characterizations are realized through describing the process of the charge of these tanks containing AB5 (LaNi5) hydride type. The final goal is to determine the thermodynamic parameter to implement an energy management of the hydride tank associated to a fuel cell.

Research paper thumbnail of Estimation of the State of Charge of a Hydride Hydrogen Tank for Vehicle Applications

2017 IEEE Vehicle Power and Propulsion Conference (VPPC), 2017

Metal hydrides have been receiving a great attention as an effective and safe way to store hydrog... more Metal hydrides have been receiving a great attention as an effective and safe way to store hydrogen. Metal hydride-based hydrogen tank has a huge potential for the application of on-board hydrogen storage on the fuel cell electric vehicles. When the metal hydrides aging with cycle, the capacity of the hydrogen tank decreases. In this work, a mathematical model to estimate the hydrogen supply capability and observe degeneration conditions with cycle life of a hydride tank is presented. The used method is based on the exploitation of properties of Pressure-Composition-Temperature (PCT) isotherm of hydrogenation process in the hydride tank and the empirical modeling using experimental data. The established model can be used to describe the hydrogen supply capability and the concentration in the tank with equilibrium pressure and temperature under static state. This model could also be used to determine the aging degree of the tank after several charge and discharge cycles.

Research paper thumbnail of On-line state of charge estimation of embedded metal hydride hydrogen storage tank based on state classification

Journal of Energy Storage, 2021

With the further deterioration of environment and the depletion of fossil fuels, the alternative ... more With the further deterioration of environment and the depletion of fossil fuels, the alternative energy sources are urgently needed to be discovered. Hydrogen holds great promise thanks to its unlimited resources, high energy density and the environmentally friendly nature. However, its low volume density under normal temperature and pressure becomes the main challenge for on-board storage.

Research paper thumbnail of Fault Detection through Magnetic Field Measurement of Permanent Magnet Machines with Reversed Structure

2017 IEEE Vehicle Power and Propulsion Conference (VPPC), 2017

The aims of this work is to appreciate the degree of relevance of the use the external magnetic f... more The aims of this work is to appreciate the degree of relevance of the use the external magnetic field for diagnosis applications in the field of electrical traction provided by external rotor permanent magnets synchronous machines. A numerical modeling using the finite element method has been developed to simulate the behavior of the machine in operating generator in healthy and in faulty modes. Furthermore, the principle of the method of measuring the external magnetic field and the optimization of the magnetic sensors positions are explained. The study was validated by an experimental approach.

Research paper thumbnail of Design and practical study of three phase interleaved boost converter for fuel cell electric vehicle

Journal of Power Sources, 2020

Even being far from spared by the new challenges, the automotive sector is at the heart of change... more Even being far from spared by the new challenges, the automotive sector is at the heart of changes as it produces of greenhouse gas emissions and it is responsible for air pollution and global warming. So, moving towards electricity productions based on green/clean energy has become increasingly important. The fuel cell (FC) produces electrical energy from hydrogen and oxygen without the release of pollutants. Its use in the automotive sector is therefore considered in the long term to address the problem of sustainable mobility. However, some matters are persisting due to the feeble voltage generated at the fuel cell outflow. Eventually, a DC/DC converter turns to be necessary to enhance this voltage to the appropriate standard of the DC bus voltage. In order to fulfill all requirements for electrical vehicle applications using fuel cell as main energy, the interleaved boost DC/DC and isolated DC/DC converters were adopted to provide better performance. This research work focuses on the analysis and design approach for the new topology of DC/DC power converter that interface a fuel cell used an electric vehicle. The proposed interleaved boost converter is validated experimentally by the obtained results from a prototype that has been built and tested in our laboratory based on DSP1104 and FPGA. The interleaved converter which ensures the minimization of the output current ripples of the fuel cell and guarantee the reliability of the system.

Research paper thumbnail of Investigation of optimal control for vibration and noise reduction in-wheel switched reluctance motor used in electric vehicle

Mathematics and Computers in Simulation, 2019

In this paper, an appropriate control technique is investigated to reduce vibration and noise in ... more In this paper, an appropriate control technique is investigated to reduce vibration and noise in switched reluctance motors (SRM). Vibrations are mainly caused by radial force acting on salient poles of the motor. In order to determine this force, a no linear model for switched reluctance motor is developed, based on finite element calculation of inductance and natural frequencies of stator. Thus, the force component at a frequency close to natural frequency of stator should be reduced. In this context, a method of two steps commutation is also applied. To verify the effectiveness of the proposed method, the electro-mechanicalacoustic developed model makes possible to define theoretical spectrum of vibration and noise with conventional and proposed method. The simulation results showed that the proposed method performs better in terms of vibration and noise reduction. Highlights  Low cost switched reluctance motor (SRM) has become an attractive candidate for electric vehicle propulsion system  SRMs fed though half-bridge converters are characterized by significant vibration and noise.  An efficient method is applied for the reduction of vibration and noise in SRMs.

Research paper thumbnail of New dynamic modeling of a real embedded metal hydride hydrogen storage system

International Journal of Hydrogen Energy, 2019

In this work, the dynamic responses of the on board hydrogen storage system with commercially ava... more In this work, the dynamic responses of the on board hydrogen storage system with commercially available metal hydride tanks are investigated based on the database collected from fuel cell electric vehicles operation experiments. A mathematical model considering the heat transfer measured by the temperature control system is developed to analyze the absorption and desorption reaction during operation. As a seal container filled with unknown metal hydride, the practical used hydrogen storage tank is a gray box in the embedded storage system. Without the information about characteristics of material, current operation state and degradation degree, the parameters of the model are uncertain. Particle swarm optimization (PSO) algorithm is applied to search for the optimal parameter set. The simulation results of the hydrogen storage system model using these parameters show great agreements with the real operating data under different temperature conditions; the maximal error is lower than 9%.

Research paper thumbnail of A Fault Severity Index for Stator Winding Faults Detection in Vector Controlled PM Synchronous Motor

Journal of Electrical Engineering and Technology, 2015

Stator turn faults in permanent magnet synchronous motors (PMSMs) are more dangerous than those i... more Stator turn faults in permanent magnet synchronous motors (PMSMs) are more dangerous than those in induction motors (IMs) because of the presence of spinning rotor magnets that can be turned off at will. Condition monitoring and fault detection and diagnosis of the PMSM have been receiving a growing amount of attention among scientists and engineers in the past few years. The aim of this study is to propose a new detection technique of stator winding faults in a three-phase PMSM. This technique is based on the image analysis and recognition of the stator current Concordia patterns, and will allow the identification of turn faults in the stator winding as well as its correspondent fault index severity. A test bench of a vector controlled PMSM motor behaviors under short circuited turn in two phases stator windings has been built. Some experimental results of the phase to phase short circuits have been performed for diagnosis purpose.

Research paper thumbnail of Artificial neural network‐based fault diagnosis in the AC–DC converter of the power supply of series hybrid electric vehicle

IET Electrical Systems in Transportation, 2016

AC-DC converter switches of the drive train of series hybrid electric vehicles (SHEVs) are genera... more AC-DC converter switches of the drive train of series hybrid electric vehicles (SHEVs) are generally exposed to the possibility of outbreak open-phase faults because of troubles with the switching devices. In this framework, the present study proposes an artificial neural network (ANN)-based method for fault diagnosis after extraction of a new pattern. The new pattern under AC-DC converter failure in view of SHEV application has been used for train-proposed ANN. To achieve this goal, four different levels of switches fault are considered on the basis of both simulation and experimental results. Ensuring the accuracy and generalisation of the introduced pattern, several parameters have been considered, namely: capacitor size changes, load, and speed variations. The experimental results validate the simulation results thoroughly.

Research paper thumbnail of Numerical modelling and experimental analysis of vibratory and acoustics behaviours of a special design squirrel-cage three-phase asynchronous machine

International Aegean Conference on Electrical Machines and Power Electronics and Electromotion, Joint Conference, 2011

ABSTRACT The paper presents a comparison between the obtained results from testing a special desi... more ABSTRACT The paper presents a comparison between the obtained results from testing a special design 5 kW squirrel-cage three-phase asynchronous machine and the numerical model of the same machine, simulated under the FLUX2D Finite Element Software. The aim is to validate the numerical model in the loaded and unloaded cases. The resulting model will be used for further research into the vibratory behaviour and noise of the motor. In this paper, an experimental approach is used to show the influence of load on motor vibration and noise levels. The relation between the natural frequencies of the stator, the frequencies of the forces causing vibration and the noise of the motor, is studied by analysing several sets of measurements.