Pub Date : 2015-06-01DOI: 10.1109/EVER.2015.7112971
Dong-min Miao, Jian-Xin Shen
Two direct voltage control (DVC) strategies for the permanent magnet synchronous generator (PMSG) system are proposed and comparatively studied in this paper. The strategies are especially utilized in variable-speed applications, in order to stabilize the PWM rectifier output voltage on the dc bus. One of the DVC strategies uses hysteresis control (HC) of the dc bus voltage to determine the PWM signals, while the other uses PI control of the dc bus voltage together with the space vector modulation (SVM) to determine the PWM signals. The former strategy exhibits simplicity in both theory and implementation, whilst the latter has better performance on the output dc voltage. Both strategies are analyzed with MATLAB/Simulink and verified by experiments with a laboratory test bench.
{"title":"Direct voltage control strategies for variable-speed permanent magnet synchronous generator system","authors":"Dong-min Miao, Jian-Xin Shen","doi":"10.1109/EVER.2015.7112971","DOIUrl":"https://doi.org/10.1109/EVER.2015.7112971","url":null,"abstract":"Two direct voltage control (DVC) strategies for the permanent magnet synchronous generator (PMSG) system are proposed and comparatively studied in this paper. The strategies are especially utilized in variable-speed applications, in order to stabilize the PWM rectifier output voltage on the dc bus. One of the DVC strategies uses hysteresis control (HC) of the dc bus voltage to determine the PWM signals, while the other uses PI control of the dc bus voltage together with the space vector modulation (SVM) to determine the PWM signals. The former strategy exhibits simplicity in both theory and implementation, whilst the latter has better performance on the output dc voltage. Both strategies are analyzed with MATLAB/Simulink and verified by experiments with a laboratory test bench.","PeriodicalId":169529,"journal":{"name":"2015 Tenth International Conference on Ecological Vehicles and Renewable Energies (EVER)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128702823","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-06-01DOI: 10.1109/EVER.2015.7112968
M. Caruso, A. D. Di Tommaso, S. Emma, R. Miceli
This paper presents the analysis, characterization and comparison of the cogging torque components generated by five different IPMSM rotor structures. More in detail, an IPMSM model (named IPMSM1), which is derived from a commercial geometry, is analyzed by using a Finite Element Method (FEM) approach. Then, four other IPMSM models, which are obtained by modifying the IPMSM1 rotor structure and by maintaining the same stator configuration, are proposed and analyzed. From the obtained simulation results, the cogging torque components for each structure are determined and compared. From this comparison, a significant cogging torque decrease is occurring for the modified geometries, without affecting the values of the generated torque. Furthermore, a meaningful relationship between the peak values of the cogging torque and the gradients of the flux density around the neutral area is reported and discussed. Therefore, simple structure modifications applied to the rotor geometry can bring significant improvements in terms of motor performances and cogging torque reduction.
{"title":"Analysis, characterization and minimization of IPMSMs cogging torque with different rotor structures","authors":"M. Caruso, A. D. Di Tommaso, S. Emma, R. Miceli","doi":"10.1109/EVER.2015.7112968","DOIUrl":"https://doi.org/10.1109/EVER.2015.7112968","url":null,"abstract":"This paper presents the analysis, characterization and comparison of the cogging torque components generated by five different IPMSM rotor structures. More in detail, an IPMSM model (named IPMSM1), which is derived from a commercial geometry, is analyzed by using a Finite Element Method (FEM) approach. Then, four other IPMSM models, which are obtained by modifying the IPMSM1 rotor structure and by maintaining the same stator configuration, are proposed and analyzed. From the obtained simulation results, the cogging torque components for each structure are determined and compared. From this comparison, a significant cogging torque decrease is occurring for the modified geometries, without affecting the values of the generated torque. Furthermore, a meaningful relationship between the peak values of the cogging torque and the gradients of the flux density around the neutral area is reported and discussed. Therefore, simple structure modifications applied to the rotor geometry can bring significant improvements in terms of motor performances and cogging torque reduction.","PeriodicalId":169529,"journal":{"name":"2015 Tenth International Conference on Ecological Vehicles and Renewable Energies (EVER)","volume":"99 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116039567","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-06-01DOI: 10.1109/EVER.2015.7112916
S. Chishko, Y. Tang, J. Paulides, E. Lomonova
This paper investigates the applicability of the CoEnergy approach for a DC excited flux-switching motor. Based on CoEnergy data extracted from a finite element model, a macromodel of the motor is created. This “fast” model allows to work with analytical functions instead of lookup tables. The proposed model has a good accuracy when the excitation field of a DC winding prevails in the magnetization and, therefore, can be used for the purpose of electric powertrain system modelling.
{"title":"CoEnergy-based model for DC excited flux-switching motor","authors":"S. Chishko, Y. Tang, J. Paulides, E. Lomonova","doi":"10.1109/EVER.2015.7112916","DOIUrl":"https://doi.org/10.1109/EVER.2015.7112916","url":null,"abstract":"This paper investigates the applicability of the CoEnergy approach for a DC excited flux-switching motor. Based on CoEnergy data extracted from a finite element model, a macromodel of the motor is created. This “fast” model allows to work with analytical functions instead of lookup tables. The proposed model has a good accuracy when the excitation field of a DC winding prevails in the magnetization and, therefore, can be used for the purpose of electric powertrain system modelling.","PeriodicalId":169529,"journal":{"name":"2015 Tenth International Conference on Ecological Vehicles and Renewable Energies (EVER)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117051711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-06-01DOI: 10.1109/EVER.2015.7113000
U. Muntwyler
The switch to mainly renewable energies offers countries without and with fossil energies more chances than threats. For a mid European country as Switzerland we can save annually 13-15 billionUS$ (260-300 BillionUS$ in 20 years) instead of supporting countries as Russia, USA, Saudi Arabia, Lybia, Nigeria etc. We can be less susceptible against blackmail and can spend the money in our country for a sustainable energy supply with less CO2, less costs and create jobs in Switzerland. Many detail problems has to be solved to be independent from fossil fuels and nuclear power. But still now we have all the needed technologies. No doubt in 2050 they will be cheaper more efficient and more power full. All we have to do is do start!
{"title":"Towards 100% renewable energy supplies…","authors":"U. Muntwyler","doi":"10.1109/EVER.2015.7113000","DOIUrl":"https://doi.org/10.1109/EVER.2015.7113000","url":null,"abstract":"The switch to mainly renewable energies offers countries without and with fossil energies more chances than threats. For a mid European country as Switzerland we can save annually 13-15 billionUS$ (260-300 BillionUS$ in 20 years) instead of supporting countries as Russia, USA, Saudi Arabia, Lybia, Nigeria etc. We can be less susceptible against blackmail and can spend the money in our country for a sustainable energy supply with less CO2, less costs and create jobs in Switzerland. Many detail problems has to be solved to be independent from fossil fuels and nuclear power. But still now we have all the needed technologies. No doubt in 2050 they will be cheaper more efficient and more power full. All we have to do is do start!","PeriodicalId":169529,"journal":{"name":"2015 Tenth International Conference on Ecological Vehicles and Renewable Energies (EVER)","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126235539","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-06-01DOI: 10.1109/EVER.2015.7112948
C. Awah, Z. Zhu, Z. Wu, D. Wu
Due to the high price of rare-earth magnets, it is pertinent to develop high torque density permanent magnet (PM) machines with reduced magnet volume, which is the main purpose of this paper. This paper proposes novel high torque density magnetically-geared switched flux permanent magnet machines in which the stator is partitioned into two stators but with armature windings and PM excitations separately on each stator whilst the number of rotor segmented iron pieces is approximately twice or equal to the number of the stator teeth / poles. Therefore, the developed machines are double stator / single rotor machines. The armature outer stator is equipped with concentrated non-overlapping winding and identical to the stator of a fractional-slot PM machine, whilst the structure of the inner excitation stator has interior PMs with flux focusing, but structurally identical to the rotor of a conventional interior PM machine. The influence of design parameters is investigated at a fixed copper loss by a 2-dimensional finite element analysis method. Furthermore, the effect of different rotor and stator pole combinations is also analysed in detail. The electromagnetic performance of the proposed machines show that the odd rotor pole number machines are potentially better in terms of high torque and low torque ripple compared to the equivalent even rotor pole number machines under the same condition, albeit with potential unbalanced magnetic force which may be eliminated by doubling the stator and rotor pole numbers. Finally, the predicted electromagnetic performances of the proposed machines are validated by experiments on the fabricated prototype.
{"title":"High torque density magnetically-geared switched flux permanent magnet machines","authors":"C. Awah, Z. Zhu, Z. Wu, D. Wu","doi":"10.1109/EVER.2015.7112948","DOIUrl":"https://doi.org/10.1109/EVER.2015.7112948","url":null,"abstract":"Due to the high price of rare-earth magnets, it is pertinent to develop high torque density permanent magnet (PM) machines with reduced magnet volume, which is the main purpose of this paper. This paper proposes novel high torque density magnetically-geared switched flux permanent magnet machines in which the stator is partitioned into two stators but with armature windings and PM excitations separately on each stator whilst the number of rotor segmented iron pieces is approximately twice or equal to the number of the stator teeth / poles. Therefore, the developed machines are double stator / single rotor machines. The armature outer stator is equipped with concentrated non-overlapping winding and identical to the stator of a fractional-slot PM machine, whilst the structure of the inner excitation stator has interior PMs with flux focusing, but structurally identical to the rotor of a conventional interior PM machine. The influence of design parameters is investigated at a fixed copper loss by a 2-dimensional finite element analysis method. Furthermore, the effect of different rotor and stator pole combinations is also analysed in detail. The electromagnetic performance of the proposed machines show that the odd rotor pole number machines are potentially better in terms of high torque and low torque ripple compared to the equivalent even rotor pole number machines under the same condition, albeit with potential unbalanced magnetic force which may be eliminated by doubling the stator and rotor pole numbers. Finally, the predicted electromagnetic performances of the proposed machines are validated by experiments on the fabricated prototype.","PeriodicalId":169529,"journal":{"name":"2015 Tenth International Conference on Ecological Vehicles and Renewable Energies (EVER)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122012229","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-06-01DOI: 10.1109/EVER.2015.7112963
Hui Yang, Heyun Lin, S. Fang, Yunkai Huang, Z. Zhu, D. Wu, H. Hua
This paper proposes two new switched flux memory machines (SFMMs) based on the concept of E-core and C-core conventional SF machines. With the proposed topologies, the torque density can be enhanced while the magnet usage can be reduced compared with their counterpart conventional SF machines. Meanwhile, since both normal PM and low coercive force PM materials are adopted, the proposed machines also obtain obvious flux adjustable capability, which is particular suitable for electric vehicular applications. In this paper, the stator/rotor pole (Ns/Nr) combination, magnet dimensions and design parameters will be optimized for the proposed topologies. Then, the electromagnetic performance of the proposed machines will be investigated and compared with the conventional SFMMs to validate their improvements.
{"title":"Novel alternative switched flux memory machines having hybrid magnet topologies","authors":"Hui Yang, Heyun Lin, S. Fang, Yunkai Huang, Z. Zhu, D. Wu, H. Hua","doi":"10.1109/EVER.2015.7112963","DOIUrl":"https://doi.org/10.1109/EVER.2015.7112963","url":null,"abstract":"This paper proposes two new switched flux memory machines (SFMMs) based on the concept of E-core and C-core conventional SF machines. With the proposed topologies, the torque density can be enhanced while the magnet usage can be reduced compared with their counterpart conventional SF machines. Meanwhile, since both normal PM and low coercive force PM materials are adopted, the proposed machines also obtain obvious flux adjustable capability, which is particular suitable for electric vehicular applications. In this paper, the stator/rotor pole (Ns/Nr) combination, magnet dimensions and design parameters will be optimized for the proposed topologies. Then, the electromagnetic performance of the proposed machines will be investigated and compared with the conventional SFMMs to validate their improvements.","PeriodicalId":169529,"journal":{"name":"2015 Tenth International Conference on Ecological Vehicles and Renewable Energies (EVER)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128101675","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-06-01DOI: 10.1109/EVER.2015.7113004
Hania El-Kanj Baitie, T. Selmi
Smart grid technology is a collection of existing and developing technologies all combined together. This technology is capable of enhancing the efficiency in production and consumption of electricity and improves the reliability and integration of renewable power into the grid. Current grids focus on centralized supply sources. However; the grid's design can be modified and thus enhanced to receive fixed and predictable loads and to accept power from the renewable and distributed energy resources all through the grid. On the other hand, knowing that these resources are discontinuous and non-monotonic in nature, the grid requires an integration of monitoring and control technologies, as well as integration with automation processes in the aim of controlling divergent energy flows and planning for standby capacity to absorb the intermittent generation. The solar photovoltaic (PV) system consists of many stages with the conversion stage as one of the most crucial stage in the whole system. Accordingly, the characteristics and features of this stage control the behaviour of the solar PV system. Therefore; it is recommended that intelligent interfaces be linked and connected to the PV system to empower the grid the ability to handle two-way flows of power and communication. This implementation is required and will permit the seamless integration of solar technologies in high-penetration developments. In this paper, the authors aimed at reviewing the smart grid characteristics in the light of integrating renewable energy. In accordance, a wide research is conducted in the market to check the availability of different transformerless inverters that are compatible with solar PV applications. Following, a comparison between the features of selected inverters and those of smart grid is obtained. Consequently, a detailed description as well as the simulation of the designed transformerless inverter is demonstrated in this paper.
{"title":"Review of smart grid systems' requirements","authors":"Hania El-Kanj Baitie, T. Selmi","doi":"10.1109/EVER.2015.7113004","DOIUrl":"https://doi.org/10.1109/EVER.2015.7113004","url":null,"abstract":"Smart grid technology is a collection of existing and developing technologies all combined together. This technology is capable of enhancing the efficiency in production and consumption of electricity and improves the reliability and integration of renewable power into the grid. Current grids focus on centralized supply sources. However; the grid's design can be modified and thus enhanced to receive fixed and predictable loads and to accept power from the renewable and distributed energy resources all through the grid. On the other hand, knowing that these resources are discontinuous and non-monotonic in nature, the grid requires an integration of monitoring and control technologies, as well as integration with automation processes in the aim of controlling divergent energy flows and planning for standby capacity to absorb the intermittent generation. The solar photovoltaic (PV) system consists of many stages with the conversion stage as one of the most crucial stage in the whole system. Accordingly, the characteristics and features of this stage control the behaviour of the solar PV system. Therefore; it is recommended that intelligent interfaces be linked and connected to the PV system to empower the grid the ability to handle two-way flows of power and communication. This implementation is required and will permit the seamless integration of solar technologies in high-penetration developments. In this paper, the authors aimed at reviewing the smart grid characteristics in the light of integrating renewable energy. In accordance, a wide research is conducted in the market to check the availability of different transformerless inverters that are compatible with solar PV applications. Following, a comparison between the features of selected inverters and those of smart grid is obtained. Consequently, a detailed description as well as the simulation of the designed transformerless inverter is demonstrated in this paper.","PeriodicalId":169529,"journal":{"name":"2015 Tenth International Conference on Ecological Vehicles and Renewable Energies (EVER)","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115028160","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-06-01DOI: 10.1109/EVER.2015.7113028
L. Quéval, L. Vido, A. Coty, B. Multon
The simplicity of photovoltaic motors makes them ideal candidates for fully autonomous applications requiring thousands of operating hours without maintenance, like water pumping. Photovoltaic motors use photovoltaic cells optically commutated by a shutter driven by the motor rotor to convert light energy into mechanical energy, without the need of any brushes or other power electronics. With the decrease of photovoltaic cells price, photovoltaic motors could be more affordable and reliable than conventional systems, and therefore particularly well suited for off-grid applications. The concept has been patented under various forms, but the scientific literature is so far very scarce. In this article, we attempt to classify photovoltaic motors, and to explain in details their physical working principle. Then we compare the different architectures by defining two pre-design factors linked to the system maximal output power. Finally, we report first experimental results on a photovoltaic switched reluctance motor (PV SRM) prototype using a 6/4 switched reluctance machine and 12 photovoltaic cells.
{"title":"Photovoltaic motors review, comparison and switched reluctance motor prototype","authors":"L. Quéval, L. Vido, A. Coty, B. Multon","doi":"10.1109/EVER.2015.7113028","DOIUrl":"https://doi.org/10.1109/EVER.2015.7113028","url":null,"abstract":"The simplicity of photovoltaic motors makes them ideal candidates for fully autonomous applications requiring thousands of operating hours without maintenance, like water pumping. Photovoltaic motors use photovoltaic cells optically commutated by a shutter driven by the motor rotor to convert light energy into mechanical energy, without the need of any brushes or other power electronics. With the decrease of photovoltaic cells price, photovoltaic motors could be more affordable and reliable than conventional systems, and therefore particularly well suited for off-grid applications. The concept has been patented under various forms, but the scientific literature is so far very scarce. In this article, we attempt to classify photovoltaic motors, and to explain in details their physical working principle. Then we compare the different architectures by defining two pre-design factors linked to the system maximal output power. Finally, we report first experimental results on a photovoltaic switched reluctance motor (PV SRM) prototype using a 6/4 switched reluctance machine and 12 photovoltaic cells.","PeriodicalId":169529,"journal":{"name":"2015 Tenth International Conference on Ecological Vehicles and Renewable Energies (EVER)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129574717","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-06-01DOI: 10.1109/EVER.2015.7112939
Georgios E. Sfakianakis, J. Everts, E. Lomonova
This paper is divided into three main parts. In the first part, i.e. Section II, a general outline of the system level aspects regarding battery chargers (power converters) for plug-in electric vehicles (PEVs) is given. Thereby, the different charging modes of the converters, the corresponding power levels, and the infrastructural facilities are discussed. Moreover, Vehicle-to-Grid (V2G) operation by means of grid-forming, grid-feeding, and grid-supporting converter functionality is briefly explained, and the input power quality and electromagnetic compatibility requirements are summarized. In the second part, i.e. Section III, the mutually coupled indices that determine the overall performance of the system, such as power losses (efficiency), volume (power density), weight (specific power), failure rate (reliability), and costs (relative cost), are outlined. In this context, the role that wide band-gap power semiconductors (e.g. SiC, GaN) can play in order to further improve the system performance is highlighted. In the third part, i.e. Section IV, a concise overview of the possible topological implementations for the mentioned power converters is provided. The focus is on conductive, isolated AC-DC converter topologies with high AC input power quality in terms of power factor correction (PFC) and harmonic distortion, and with bidirectional power flow capability in order to facilitate V2G operation.
{"title":"Overview of the requirements and implementations of bidirectional isolated AC-DC converters for automotive battery charging applications","authors":"Georgios E. Sfakianakis, J. Everts, E. Lomonova","doi":"10.1109/EVER.2015.7112939","DOIUrl":"https://doi.org/10.1109/EVER.2015.7112939","url":null,"abstract":"This paper is divided into three main parts. In the first part, i.e. Section II, a general outline of the system level aspects regarding battery chargers (power converters) for plug-in electric vehicles (PEVs) is given. Thereby, the different charging modes of the converters, the corresponding power levels, and the infrastructural facilities are discussed. Moreover, Vehicle-to-Grid (V2G) operation by means of grid-forming, grid-feeding, and grid-supporting converter functionality is briefly explained, and the input power quality and electromagnetic compatibility requirements are summarized. In the second part, i.e. Section III, the mutually coupled indices that determine the overall performance of the system, such as power losses (efficiency), volume (power density), weight (specific power), failure rate (reliability), and costs (relative cost), are outlined. In this context, the role that wide band-gap power semiconductors (e.g. SiC, GaN) can play in order to further improve the system performance is highlighted. In the third part, i.e. Section IV, a concise overview of the possible topological implementations for the mentioned power converters is provided. The focus is on conductive, isolated AC-DC converter topologies with high AC input power quality in terms of power factor correction (PFC) and harmonic distortion, and with bidirectional power flow capability in order to facilitate V2G operation.","PeriodicalId":169529,"journal":{"name":"2015 Tenth International Conference on Ecological Vehicles and Renewable Energies (EVER)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129724240","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-06-01DOI: 10.1109/EVER.2015.7112970
I. Abdennadher, A. Masmoudi
The paper deals with a class of fractional-slot PM synchronous machines (FSPMSMs) which are characterized by specific star of slots including two spokes of back-EMF phasors in each of the two sectors allocated to a given phase. This offers the possibility to build the armature with phases made up of parallel-connected dual coils. With this done, an improvement of the fault-tolerance capability is gained under open-circuit faulty operation in so far as a failure affecting a coil would discard one among the parallel branches of the corresponding phase, rather than the total phase in FSPMSMs with series-connected coils in the armature. The fallouts of the parallel connection on the torque production capability are investigated through a comparison of the resulting iso-torque curves, plotted in the direct-quadrature currents plane, with those yielded by the series connection. It has been found that, while the torque is almost halved for a given armature current, the constant torque and flux weakening speed ranges are similar under both coil connections.
{"title":"Identification and feature characterization of low voltage FS-IPM synchronous machines","authors":"I. Abdennadher, A. Masmoudi","doi":"10.1109/EVER.2015.7112970","DOIUrl":"https://doi.org/10.1109/EVER.2015.7112970","url":null,"abstract":"The paper deals with a class of fractional-slot PM synchronous machines (FSPMSMs) which are characterized by specific star of slots including two spokes of back-EMF phasors in each of the two sectors allocated to a given phase. This offers the possibility to build the armature with phases made up of parallel-connected dual coils. With this done, an improvement of the fault-tolerance capability is gained under open-circuit faulty operation in so far as a failure affecting a coil would discard one among the parallel branches of the corresponding phase, rather than the total phase in FSPMSMs with series-connected coils in the armature. The fallouts of the parallel connection on the torque production capability are investigated through a comparison of the resulting iso-torque curves, plotted in the direct-quadrature currents plane, with those yielded by the series connection. It has been found that, while the torque is almost halved for a given armature current, the constant torque and flux weakening speed ranges are similar under both coil connections.","PeriodicalId":169529,"journal":{"name":"2015 Tenth International Conference on Ecological Vehicles and Renewable Energies (EVER)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130627743","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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