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Papers by BENKRAOUDA Souleyman

Research paper thumbnail of Semi-Analytical Magnetic Field Predicting in Many Structures of Permanent-Magnet Synchronous Machines Considering the Iron Permeability

HAL (Le Centre pour la Communication Scientifique Directe), 2018

This paper deals with an adaptable semi-analytical model to calculate the open-circuit and armatu... more This paper deals with an adaptable semi-analytical model to calculate the open-circuit and armature reaction field distributions as well as the electromagnetic performances in many structures of permanent-magnet synchronous machines (PMSMs). It is based on the multi-layer models considering the iron permeability with the convolution theorem (i.e., Cauchy's product theorem) using the harmonic modeling technique (or the Maxwell-Fourier method). The 2-D semi-analytical model can be used for surfacemounted-inset-mounted or spoke-type PMSMs with different permanent-magnet (PM) magnetization patterns, winding structures, internal/external rotors, and slotless or slotted stators without the need to adopt the model equations to a specific PM machine type. For example, this scientific contribution has been applied to three types of PMSM with different topologies, viz.: i) slotted surface-mounted external rotor PMSM; ii) slotted surface-inset internal rotor PMSM; and iii) slotless external rotor spoke-type tangential PMSM. Finally, the results of semi-analytical method are compared with those found by the finite-element method.

Research paper thumbnail of Semi-Analytical Magnetic Field Predicting in Many Structures of Permanent-Magnet Synchronous Machines Considering the Iron Permeability

IEEE Transactions on Magnetics, Jul 1, 2018

This paper deals with an adaptable semi-analytical model to calculate the open-circuit and armatu... more This paper deals with an adaptable semi-analytical model to calculate the open-circuit and armature reaction field distributions as well as the electromagnetic performances in many structures of permanent-magnet synchronous machines (PMSMs). It is based on the multi-layer models considering the iron permeability with the convolution theorem (i.e., Cauchy's product theorem) using the harmonic modeling technique (or the Maxwell-Fourier method). The 2-D semi-analytical model can be used for surfacemounted-inset-mounted or spoke-type PMSMs with different permanent-magnet (PM) magnetization patterns, winding structures, internal/external rotors, and slotless or slotted stators without the need to adopt the model equations to a specific PM machine type. For example, this scientific contribution has been applied to three types of PMSM with different topologies, viz.: i) slotted surface-mounted external rotor PMSM; ii) slotted surface-inset internal rotor PMSM; and iii) slotless external rotor spoke-type tangential PMSM. Finally, the results of semi-analytical method are compared with those found by the finite-element method.

Research paper thumbnail of Diagnosis of lesion with statistical method of Anova1 two ways for multi-MRI images with format. dicom

International Journal of Engineering & Technology, 2017

This paper deals with real time surface detection for image processing and analysis. We propose a... more This paper deals with real time surface detection for image processing and analysis. We propose an appropriate analysis method with analysis of variance two ways to detect all surfaces of images in accuracy time. The results indicate that Anova_2 converged to the solution in accuracy time in comparison with Anova_1 for linear model.

Research paper thumbnail of Belonging probability inverse image approach for forest fire detection

African Journal of Ecology, 2013

ABSTRACT We present a method for early forest fire detection from a satellite image using the bel... more ABSTRACT We present a method for early forest fire detection from a satellite image using the belonging probability matrix image. We have considered each satellite image matrix line as a realization of a nonstationary random process in the thermal infra-red (TIR) spectral band and then divided each line into very small stationary and ergodic intervals to obtain an adequate mathematical model. Furthermore, the pixels of the satellite image are considered to be statistically independent; thus, any small interval of each line behaves, naturally, as a Gaussian stationary noise. In this work, we have, therefore, selected the latter as a mathematical model for modelling these intervals of a satellite image without fire, and then, we have determined the parameters of this Gaussian realization. So, when a fire occurs in this forest zone, we can use these parameters to calculate its belonging probability to the original image without fire. This probability should be very small because the fire, in any forest, can be considered as a rare event. As a consequence, we have presented a matrix image of the probability inverse of each interval for a better fire detection observation. Résumé Nous présentons une méthode de détection précoce des feux de forêts par image satellite en utilisant l'image matricielle de la probabilité d'appartenance. Nous avons considéré chaque ligne matricielle de l'image satellite comme une réalisation d'un processus aléatoire non stationnaire dans la bande spectrale TIR (Thermal Infra-Rouge), puis divisé chaque ligne en très petits intervalles stationnaires et ergodiques, afin d'obtenir un modèle mathématique adéquat. Ensuite, les pixels de l'image satellite sont considérés comme statistiquement indépendants, et donc chaque petit intervalle de chaque ligne se comporte, naturellement, comme un bruit gaussien stationnaire. Dans ce travail, nous avons donc sélectionné ce dernier comme modèle mathématique pour modéliser ces intervalles d'une image satellite sans feu et nous avons déterminé les paramètres de cette réalisation gaussienne. Ainsi, lorsqu'un feu survient dans cette zone de forêt, nous pouvons utiliser ces paramètres pour calculer sa probabilité d'appartenance à l'image originale sans feu. Cette probabilité doit être très faible puisque le feu, dans toute forêt, peut être considéré comme un événement rare. Par conséquent, nous présentons une image matricielle de l'inverse de la probabilité de chaque intervalle pour une meilleure observation de détection des feux.

Research paper thumbnail of Semi-Analytical Magnetic Field Predicting in Many Structures of Permanent-Magnet Synchronous Machines Considering the Iron Permeability

IEEE Transactions on Magnetics, 2018

This paper deals with an adaptable semi-analytical model to calculate the open-circuit and armatu... more This paper deals with an adaptable semi-analytical model to calculate the open-circuit and armature reaction field distributions as well as the electromagnetic performances in many structures of permanent-magnet synchronous machines (PMSMs). It is based on the multi-layer models considering the iron permeability with the convolution theorem (i.e., Cauchy's product theorem) using the harmonic modeling technique (or the Maxwell-Fourier method). The 2-D semi-analytical model can be used for surfacemounted-inset-mounted or spoke-type PMSMs with different permanent-magnet (PM) magnetization patterns, winding structures, internal/external rotors, and slotless or slotted stators without the need to adopt the model equations to a specific PM machine type. For example, this scientific contribution has been applied to three types of PMSM with different topologies, viz.: i) slotted surface-mounted external rotor PMSM; ii) slotted surface-inset internal rotor PMSM; and iii) slotless external rotor spoke-type tangential PMSM. Finally, the results of semi-analytical method are compared with those found by the finite-element method.

Research paper thumbnail of Semi-Analytical Magnetic Field Predicting in Many Structures of Permanent-Magnet Synchronous Machines Considering the Iron Permeability

HAL (Le Centre pour la Communication Scientifique Directe), 2018

This paper deals with an adaptable semi-analytical model to calculate the open-circuit and armatu... more This paper deals with an adaptable semi-analytical model to calculate the open-circuit and armature reaction field distributions as well as the electromagnetic performances in many structures of permanent-magnet synchronous machines (PMSMs). It is based on the multi-layer models considering the iron permeability with the convolution theorem (i.e., Cauchy's product theorem) using the harmonic modeling technique (or the Maxwell-Fourier method). The 2-D semi-analytical model can be used for surfacemounted-inset-mounted or spoke-type PMSMs with different permanent-magnet (PM) magnetization patterns, winding structures, internal/external rotors, and slotless or slotted stators without the need to adopt the model equations to a specific PM machine type. For example, this scientific contribution has been applied to three types of PMSM with different topologies, viz.: i) slotted surface-mounted external rotor PMSM; ii) slotted surface-inset internal rotor PMSM; and iii) slotless external rotor spoke-type tangential PMSM. Finally, the results of semi-analytical method are compared with those found by the finite-element method.

Research paper thumbnail of Semi-Analytical Magnetic Field Predicting in Many Structures of Permanent-Magnet Synchronous Machines Considering the Iron Permeability

IEEE Transactions on Magnetics, Jul 1, 2018

This paper deals with an adaptable semi-analytical model to calculate the open-circuit and armatu... more This paper deals with an adaptable semi-analytical model to calculate the open-circuit and armature reaction field distributions as well as the electromagnetic performances in many structures of permanent-magnet synchronous machines (PMSMs). It is based on the multi-layer models considering the iron permeability with the convolution theorem (i.e., Cauchy's product theorem) using the harmonic modeling technique (or the Maxwell-Fourier method). The 2-D semi-analytical model can be used for surfacemounted-inset-mounted or spoke-type PMSMs with different permanent-magnet (PM) magnetization patterns, winding structures, internal/external rotors, and slotless or slotted stators without the need to adopt the model equations to a specific PM machine type. For example, this scientific contribution has been applied to three types of PMSM with different topologies, viz.: i) slotted surface-mounted external rotor PMSM; ii) slotted surface-inset internal rotor PMSM; and iii) slotless external rotor spoke-type tangential PMSM. Finally, the results of semi-analytical method are compared with those found by the finite-element method.

Research paper thumbnail of Diagnosis of lesion with statistical method of Anova1 two ways for multi-MRI images with format. dicom

International Journal of Engineering & Technology, 2017

This paper deals with real time surface detection for image processing and analysis. We propose a... more This paper deals with real time surface detection for image processing and analysis. We propose an appropriate analysis method with analysis of variance two ways to detect all surfaces of images in accuracy time. The results indicate that Anova_2 converged to the solution in accuracy time in comparison with Anova_1 for linear model.

Research paper thumbnail of Belonging probability inverse image approach for forest fire detection

African Journal of Ecology, 2013

ABSTRACT We present a method for early forest fire detection from a satellite image using the bel... more ABSTRACT We present a method for early forest fire detection from a satellite image using the belonging probability matrix image. We have considered each satellite image matrix line as a realization of a nonstationary random process in the thermal infra-red (TIR) spectral band and then divided each line into very small stationary and ergodic intervals to obtain an adequate mathematical model. Furthermore, the pixels of the satellite image are considered to be statistically independent; thus, any small interval of each line behaves, naturally, as a Gaussian stationary noise. In this work, we have, therefore, selected the latter as a mathematical model for modelling these intervals of a satellite image without fire, and then, we have determined the parameters of this Gaussian realization. So, when a fire occurs in this forest zone, we can use these parameters to calculate its belonging probability to the original image without fire. This probability should be very small because the fire, in any forest, can be considered as a rare event. As a consequence, we have presented a matrix image of the probability inverse of each interval for a better fire detection observation. Résumé Nous présentons une méthode de détection précoce des feux de forêts par image satellite en utilisant l'image matricielle de la probabilité d'appartenance. Nous avons considéré chaque ligne matricielle de l'image satellite comme une réalisation d'un processus aléatoire non stationnaire dans la bande spectrale TIR (Thermal Infra-Rouge), puis divisé chaque ligne en très petits intervalles stationnaires et ergodiques, afin d'obtenir un modèle mathématique adéquat. Ensuite, les pixels de l'image satellite sont considérés comme statistiquement indépendants, et donc chaque petit intervalle de chaque ligne se comporte, naturellement, comme un bruit gaussien stationnaire. Dans ce travail, nous avons donc sélectionné ce dernier comme modèle mathématique pour modéliser ces intervalles d'une image satellite sans feu et nous avons déterminé les paramètres de cette réalisation gaussienne. Ainsi, lorsqu'un feu survient dans cette zone de forêt, nous pouvons utiliser ces paramètres pour calculer sa probabilité d'appartenance à l'image originale sans feu. Cette probabilité doit être très faible puisque le feu, dans toute forêt, peut être considéré comme un événement rare. Par conséquent, nous présentons une image matricielle de l'inverse de la probabilité de chaque intervalle pour une meilleure observation de détection des feux.

Research paper thumbnail of Semi-Analytical Magnetic Field Predicting in Many Structures of Permanent-Magnet Synchronous Machines Considering the Iron Permeability

IEEE Transactions on Magnetics, 2018

This paper deals with an adaptable semi-analytical model to calculate the open-circuit and armatu... more This paper deals with an adaptable semi-analytical model to calculate the open-circuit and armature reaction field distributions as well as the electromagnetic performances in many structures of permanent-magnet synchronous machines (PMSMs). It is based on the multi-layer models considering the iron permeability with the convolution theorem (i.e., Cauchy's product theorem) using the harmonic modeling technique (or the Maxwell-Fourier method). The 2-D semi-analytical model can be used for surfacemounted-inset-mounted or spoke-type PMSMs with different permanent-magnet (PM) magnetization patterns, winding structures, internal/external rotors, and slotless or slotted stators without the need to adopt the model equations to a specific PM machine type. For example, this scientific contribution has been applied to three types of PMSM with different topologies, viz.: i) slotted surface-mounted external rotor PMSM; ii) slotted surface-inset internal rotor PMSM; and iii) slotless external rotor spoke-type tangential PMSM. Finally, the results of semi-analytical method are compared with those found by the finite-element method.