In this contribution, a tool developed for the study of the efficiency maps of shifted inductance... more In this contribution, a tool developed for the study of the efficiency maps of shifted inductances axes permanent magnet synchronous motors (SIAPMSMs) is presented and made available to the readers. The research builds upon a shared foundation that has already been established in previous works focused on the power capability of synchronous machines. This contribution is an extension of previous works dedicated to the power capabilities of shifted inductances axes synchronous motors where the losses were not considered. In this new contribution, the SIAPMSM models, which include the electromagnetic losses (joule and iron losses), are discussed. The mechanical losses are not included. The classical permanent magnet synchronous machines can be considered a particular case of a SIAPMSM. They will be used to validate the developed tools. The validation study is conducted by comparing the power capabilities and the efficiency maps of SIAPMSMs and classical PMSMs obtained by the newly dev...
2018 7th International Conference on Renewable Energy Research and Applications (ICRERA)
Many countries plane to rely on renewable energy sources for their electricity production. Recent... more Many countries plane to rely on renewable energy sources for their electricity production. Recently, the wind turbine connection under different conditions and dynamic behavior has become an important issue in grid codes. The capability of fault ride-through of wind turbines is the high important requirement related to national grid codes. Based on that, wind turbine should stay connected to the network during various scenarios of fault grid to maintain the system stability. Moreover, the generator of wind turbine should be designed to have the capability to provide reactive power during the faults. Immediately after fault clearance, generators have to supply active and reactive power to support grid voltage and frequency, respectively. In this paper, an exhaustive review of researches published about effective of Fault Ride-Through (FRT) of wind turbines with different generator systems is presented. In this review, the authors concludes that many investigations and researches should be focused to fulfill the parameter of wind turbine design. In particular, the real and reactive power needs of grid codes should be taken into account in more profundity in the future FRT solutions. Furthermore, solutions based on machine design and power electronics has been detailed.
2016 XXII International Conference on Electrical Machines (ICEM), 2016
With the advent of more electric aircraft, the use of electrical actuators instead of hydraulic a... more With the advent of more electric aircraft, the use of electrical actuators instead of hydraulic and pneumatic ones becomes necessary. Those actuators must be fault tolerant in order to ensure the continuity of service even in a faulty operating. In this paper, we will proceed to a constrained design of a Double Star Permanent Magnet Synchronous Machine tolerant to certain faults in healthy and faulty operating. First, we present the sizing of this machine and the strategy adopted in the case of an IGBT short-circuit. Then, modeling of a such machine is detailed. Finally, the performances of this fault-tolerant machine in healthy and faulty conditions are discussed. The analysis of results allows to assess the relevance of the adopted strategy and its limits.
The aim of this paper is, first, to extend the application of the hybrid analytical modeling (HAM... more The aim of this paper is, first, to extend the application of the hybrid analytical modeling (HAM) approach for the analysis of tubular linear machines (TLPM), something that has never been reported yet in the scientific literature. The HAM consists of a strong coupling between the reluctance network and the Fourier series solution of magnetic scalar potential. In order to assess the merits and capabilities of the HAM, it is applied to the study of the cogging force in linear machines and compared with finite element analyses (FEA). The cogging force is a global quantity, which is very sensitive to magnetic field computation accuracy and constitutes, therefore, a good measure of the accuracy of the HAM as compared with FEA. The HAM should require less computation time as compared with FEA, and is then more suitable for predesign stage. Three different structures are analyzed: a flat linear machine, a TLPM with internal mobile armature, and, finally, a TLPM with external mobile armature. The analyses are conducted, considering the effect of magnetic saturation.
2014 International Conference on Electrical Sciences and Technologies in Maghreb (CISTEM), 2014
An original line-starting method for a synchronous machines, which do not have damping windings, ... more An original line-starting method for a synchronous machines, which do not have damping windings, is investigated in this paper. A general overview of line start synchronous machines is first presented. Problems related to the line-starting of synchronous machines is first presented. The new line starting method is investigated using both electrical circuits modeling, and coupled 2D finite element and circuit modeling.
2014 International Conference on Electrical Sciences and Technologies in Maghreb (CISTEM), 2014
The aim of this paper is to present the analysis and prototyping of an axial flux permanent magne... more The aim of this paper is to present the analysis and prototyping of an axial flux permanent magnet synchronous machine dedicated to a small wind turbine. The analysis of the generator was made with a quasi-3D analytical model based on a multi-slice 2D analytical solution of Maxwell equations coupled sequentially to a thermal model and a mechanical model. The designed generator is a 10 kW, 375 rpm, stator-rotor-stator structure with 20 poles, 24 slots, and modular windings. Results issued from measurements are satisfactory compared to those issued from analytical model.
2014 International Conference on Electrical Sciences and Technologies in Maghreb (CISTEM), 2014
This paper presents a 2D and 3D Magnetic Equivalent Circuit (MEC) of the flux focusing permanent ... more This paper presents a 2D and 3D Magnetic Equivalent Circuit (MEC) of the flux focusing permanent magnet synchronous machine. The proposed model is based on reluctance mesh of the structure in order to have a high precision model and to take into account all leakage flux. The saturation effects and rotor motion are taking into account in the proposed model. The extension from 2D to 3D is detailed. The obtained results of 2D and 3D models are compared to finites elements model and validated by experimental measurements.
2012 IEEE International Symposium on Industrial Electronics, 2012
This paper presents a direct coupling method between finite element analysis (FEA) and magnetic e... more This paper presents a direct coupling method between finite element analysis (FEA) and magnetic equivalent circuit (MEC). The coupled problem is directly solved using an FEA commercial package. The method is applied to a flux-focusing PM machine. The choice of machine's parts to be modeled using FE method or MEC method is discussed.
2011 International Conference on Electrical Machines and Systems, 2011
... II. STATE OF THE ART In order to classify the new structure compared to existent structures, ... more ... II. STATE OF THE ART In order to classify the new structure compared to existent structures, three criterions are used. The first classification criterion is according to the flux trajectories of the excitation coils and the PM. ... 2001. [8] D. Fodorean, A. Djerdir, I.-A. Viorel, and A. Miraoui ...
IEEE International Conference on Electric Machines and Drives, 2005., 2005
This paper presents a description and operating principle of different hybrid excitation synchron... more This paper presents a description and operating principle of different hybrid excitation synchronous machines. Four prototype machines of different power rating (3 kW and 15 kW) have been studied. These machines combine two flux sources: permanent magnets, located in the rotor, and field coils, located in the stator. Thanks to this particular configuration the air gap flux can be easily
The XIX International Conference on Electrical Machines - ICEM 2010, 2010
The aim of this paper is to find the optimal circuit parameters of a permanent magnet synchronous... more The aim of this paper is to find the optimal circuit parameters of a permanent magnet synchronous machine (PMSM) for an electric or hybrid traction application. The problematic is first introduced. The PMSM model is presented. A discussion about the optimization objectives is presented in order to withdraw the most relevant ones. A multi-objectives and multi-constraints optimization using a genetic algorithm (NSGA-II) is eventually implemented in order to find the parameters values that optimize the selected criteria while respecting the specification sheet constraints.
In this contribution, a tool developed for the study of the efficiency maps of shifted inductance... more In this contribution, a tool developed for the study of the efficiency maps of shifted inductances axes permanent magnet synchronous motors (SIAPMSMs) is presented and made available to the readers. The research builds upon a shared foundation that has already been established in previous works focused on the power capability of synchronous machines. This contribution is an extension of previous works dedicated to the power capabilities of shifted inductances axes synchronous motors where the losses were not considered. In this new contribution, the SIAPMSM models, which include the electromagnetic losses (joule and iron losses), are discussed. The mechanical losses are not included. The classical permanent magnet synchronous machines can be considered a particular case of a SIAPMSM. They will be used to validate the developed tools. The validation study is conducted by comparing the power capabilities and the efficiency maps of SIAPMSMs and classical PMSMs obtained by the newly dev...
2018 7th International Conference on Renewable Energy Research and Applications (ICRERA)
Many countries plane to rely on renewable energy sources for their electricity production. Recent... more Many countries plane to rely on renewable energy sources for their electricity production. Recently, the wind turbine connection under different conditions and dynamic behavior has become an important issue in grid codes. The capability of fault ride-through of wind turbines is the high important requirement related to national grid codes. Based on that, wind turbine should stay connected to the network during various scenarios of fault grid to maintain the system stability. Moreover, the generator of wind turbine should be designed to have the capability to provide reactive power during the faults. Immediately after fault clearance, generators have to supply active and reactive power to support grid voltage and frequency, respectively. In this paper, an exhaustive review of researches published about effective of Fault Ride-Through (FRT) of wind turbines with different generator systems is presented. In this review, the authors concludes that many investigations and researches should be focused to fulfill the parameter of wind turbine design. In particular, the real and reactive power needs of grid codes should be taken into account in more profundity in the future FRT solutions. Furthermore, solutions based on machine design and power electronics has been detailed.
2016 XXII International Conference on Electrical Machines (ICEM), 2016
With the advent of more electric aircraft, the use of electrical actuators instead of hydraulic a... more With the advent of more electric aircraft, the use of electrical actuators instead of hydraulic and pneumatic ones becomes necessary. Those actuators must be fault tolerant in order to ensure the continuity of service even in a faulty operating. In this paper, we will proceed to a constrained design of a Double Star Permanent Magnet Synchronous Machine tolerant to certain faults in healthy and faulty operating. First, we present the sizing of this machine and the strategy adopted in the case of an IGBT short-circuit. Then, modeling of a such machine is detailed. Finally, the performances of this fault-tolerant machine in healthy and faulty conditions are discussed. The analysis of results allows to assess the relevance of the adopted strategy and its limits.
The aim of this paper is, first, to extend the application of the hybrid analytical modeling (HAM... more The aim of this paper is, first, to extend the application of the hybrid analytical modeling (HAM) approach for the analysis of tubular linear machines (TLPM), something that has never been reported yet in the scientific literature. The HAM consists of a strong coupling between the reluctance network and the Fourier series solution of magnetic scalar potential. In order to assess the merits and capabilities of the HAM, it is applied to the study of the cogging force in linear machines and compared with finite element analyses (FEA). The cogging force is a global quantity, which is very sensitive to magnetic field computation accuracy and constitutes, therefore, a good measure of the accuracy of the HAM as compared with FEA. The HAM should require less computation time as compared with FEA, and is then more suitable for predesign stage. Three different structures are analyzed: a flat linear machine, a TLPM with internal mobile armature, and, finally, a TLPM with external mobile armature. The analyses are conducted, considering the effect of magnetic saturation.
2014 International Conference on Electrical Sciences and Technologies in Maghreb (CISTEM), 2014
An original line-starting method for a synchronous machines, which do not have damping windings, ... more An original line-starting method for a synchronous machines, which do not have damping windings, is investigated in this paper. A general overview of line start synchronous machines is first presented. Problems related to the line-starting of synchronous machines is first presented. The new line starting method is investigated using both electrical circuits modeling, and coupled 2D finite element and circuit modeling.
2014 International Conference on Electrical Sciences and Technologies in Maghreb (CISTEM), 2014
The aim of this paper is to present the analysis and prototyping of an axial flux permanent magne... more The aim of this paper is to present the analysis and prototyping of an axial flux permanent magnet synchronous machine dedicated to a small wind turbine. The analysis of the generator was made with a quasi-3D analytical model based on a multi-slice 2D analytical solution of Maxwell equations coupled sequentially to a thermal model and a mechanical model. The designed generator is a 10 kW, 375 rpm, stator-rotor-stator structure with 20 poles, 24 slots, and modular windings. Results issued from measurements are satisfactory compared to those issued from analytical model.
2014 International Conference on Electrical Sciences and Technologies in Maghreb (CISTEM), 2014
This paper presents a 2D and 3D Magnetic Equivalent Circuit (MEC) of the flux focusing permanent ... more This paper presents a 2D and 3D Magnetic Equivalent Circuit (MEC) of the flux focusing permanent magnet synchronous machine. The proposed model is based on reluctance mesh of the structure in order to have a high precision model and to take into account all leakage flux. The saturation effects and rotor motion are taking into account in the proposed model. The extension from 2D to 3D is detailed. The obtained results of 2D and 3D models are compared to finites elements model and validated by experimental measurements.
2012 IEEE International Symposium on Industrial Electronics, 2012
This paper presents a direct coupling method between finite element analysis (FEA) and magnetic e... more This paper presents a direct coupling method between finite element analysis (FEA) and magnetic equivalent circuit (MEC). The coupled problem is directly solved using an FEA commercial package. The method is applied to a flux-focusing PM machine. The choice of machine's parts to be modeled using FE method or MEC method is discussed.
2011 International Conference on Electrical Machines and Systems, 2011
... II. STATE OF THE ART In order to classify the new structure compared to existent structures, ... more ... II. STATE OF THE ART In order to classify the new structure compared to existent structures, three criterions are used. The first classification criterion is according to the flux trajectories of the excitation coils and the PM. ... 2001. [8] D. Fodorean, A. Djerdir, I.-A. Viorel, and A. Miraoui ...
IEEE International Conference on Electric Machines and Drives, 2005., 2005
This paper presents a description and operating principle of different hybrid excitation synchron... more This paper presents a description and operating principle of different hybrid excitation synchronous machines. Four prototype machines of different power rating (3 kW and 15 kW) have been studied. These machines combine two flux sources: permanent magnets, located in the rotor, and field coils, located in the stator. Thanks to this particular configuration the air gap flux can be easily
The XIX International Conference on Electrical Machines - ICEM 2010, 2010
The aim of this paper is to find the optimal circuit parameters of a permanent magnet synchronous... more The aim of this paper is to find the optimal circuit parameters of a permanent magnet synchronous machine (PMSM) for an electric or hybrid traction application. The problematic is first introduced. The PMSM model is presented. A discussion about the optimization objectives is presented in order to withdraw the most relevant ones. A multi-objectives and multi-constraints optimization using a genetic algorithm (NSGA-II) is eventually implemented in order to find the parameters values that optimize the selected criteria while respecting the specification sheet constraints.
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Papers by Yacine AMARA