Pub Date : 2015-11-01DOI: 10.1109/SMART.2015.7399265
M. Bortolozzi, L. Branz, A. Tessarolo, C. Bruzzese
Round conductive bars embedded in semi-closed slots are frequently used in the construction of electric machinery, for instance in the squirrel cage of induction motors. Frequently, such as in the study of induction motor steady-state performance at rated slip, it is useful to estimate the slot leakage inductance of these conductors under the hypothesis of no eddy currents and no magnetic saturation. This is usually done through simple approximated analytical formulas available in the literature. In this paper, an improved explicit ready-to-use leakage inductance expression for circular bars embedded in semi-closed slots is derived by solving Poisson's equation in the slot domain. The precision of the proposed formulation is assessed against Finite Element Analysis (FEA) for various slot geometries and is shown to always give very accurate results, with errors below 2%. Conversely, approximated simplified formulas available from the literature are demonstrated to possibly give large errors, which exceed 20% for some explored slot geometries.
{"title":"An improved analytical expression for computing the leakage inductance of a circular bar in a semi-closed slot","authors":"M. Bortolozzi, L. Branz, A. Tessarolo, C. Bruzzese","doi":"10.1109/SMART.2015.7399265","DOIUrl":"https://doi.org/10.1109/SMART.2015.7399265","url":null,"abstract":"Round conductive bars embedded in semi-closed slots are frequently used in the construction of electric machinery, for instance in the squirrel cage of induction motors. Frequently, such as in the study of induction motor steady-state performance at rated slip, it is useful to estimate the slot leakage inductance of these conductors under the hypothesis of no eddy currents and no magnetic saturation. This is usually done through simple approximated analytical formulas available in the literature. In this paper, an improved explicit ready-to-use leakage inductance expression for circular bars embedded in semi-closed slots is derived by solving Poisson's equation in the slot domain. The precision of the proposed formulation is assessed against Finite Element Analysis (FEA) for various slot geometries and is shown to always give very accurate results, with errors below 2%. Conversely, approximated simplified formulas available from the literature are demonstrated to possibly give large errors, which exceed 20% for some explored slot geometries.","PeriodicalId":365573,"journal":{"name":"2015 International Conference on Sustainable Mobility Applications, Renewables and Technology (SMART)","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123395925","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 : 2015-11-01DOI: 10.1109/SMART.2015.7399246
Amal Souissi, I. Abdennadher, A. Masmoudi
This paper is aimed at the design of tabular-linear PM synchronous machines (T-LPMSMs) with emphasis on the stator magnetic circuit. Three topologies are investigated, such that: (i) an initial concept where the stator pole pitch is equal to the mover one, (ii) a modular concept where the stator is made up of magnetic units separated by a flux barrier, and (iii) a concept characterized by fractional slot per pole and per phase. A magnetic equivalent circuit (MEC) is build in order to select suitable geometrical parameters of the second topology that minimize the end effect; the ones of the first and third topologies have been treated in a previous work. The phase flux linkages and back-EMFs are investigated by FEA. It has been found that the second topology exhibits almost balanced back-EMFs. While, these have the lowest harmonic content in the third topology.
{"title":"On the stator magnetic circuit design of tubular-linear PM synchronous machines: A comparison between three topologies","authors":"Amal Souissi, I. Abdennadher, A. Masmoudi","doi":"10.1109/SMART.2015.7399246","DOIUrl":"https://doi.org/10.1109/SMART.2015.7399246","url":null,"abstract":"This paper is aimed at the design of tabular-linear PM synchronous machines (T-LPMSMs) with emphasis on the stator magnetic circuit. Three topologies are investigated, such that: (i) an initial concept where the stator pole pitch is equal to the mover one, (ii) a modular concept where the stator is made up of magnetic units separated by a flux barrier, and (iii) a concept characterized by fractional slot per pole and per phase. A magnetic equivalent circuit (MEC) is build in order to select suitable geometrical parameters of the second topology that minimize the end effect; the ones of the first and third topologies have been treated in a previous work. The phase flux linkages and back-EMFs are investigated by FEA. It has been found that the second topology exhibits almost balanced back-EMFs. While, these have the lowest harmonic content in the third topology.","PeriodicalId":365573,"journal":{"name":"2015 International Conference on Sustainable Mobility Applications, Renewables and Technology (SMART)","volume":"136 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115958624","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 : 2015-11-01DOI: 10.1109/SMART.2015.7399260
Jian-Xin Shen, Wei Sun, Xiangqian Huang
Conventional pulse width modulation (PWM) methods for inverter application have the drawback of common mode voltage (CMV) issues, mainly due to the zero states when all the motor phases are clamped to the DC source or ground. A new three-phase voltage source inverter topology is proposed in this paper. The topology employs two switches on the DC link. A forced zero state (FZS) can be obtained when the DC-link switches are turned off. With the proposed topology, FZS space vector PWM (FZS-SVPWM) and FZS discontinuous PWM (FZS-DPWM) can be derived from conventional SVPWM and DPWM, respectively. The FZS-SVPWM and FZS-DPWM methods are effective in the CMV reduction aspect, whilst have the advantage of lower current ripple and acoustic noise than the existing reduced CMV PWM methods. Moreover, an FZS optimized PWM (FZSOPWM) is also proposed to improve performance. Simulation and experiment results validate the CMV and common mode current (CMC) reduction effect as well as the acoustic noise performance. The proposed topology is effective when both the low CMV/CMC and the low current ripple or acoustic noise are highly required.
{"title":"A DC link switch-based common mode voltage reduction scheme in PWM inverter drives","authors":"Jian-Xin Shen, Wei Sun, Xiangqian Huang","doi":"10.1109/SMART.2015.7399260","DOIUrl":"https://doi.org/10.1109/SMART.2015.7399260","url":null,"abstract":"Conventional pulse width modulation (PWM) methods for inverter application have the drawback of common mode voltage (CMV) issues, mainly due to the zero states when all the motor phases are clamped to the DC source or ground. A new three-phase voltage source inverter topology is proposed in this paper. The topology employs two switches on the DC link. A forced zero state (FZS) can be obtained when the DC-link switches are turned off. With the proposed topology, FZS space vector PWM (FZS-SVPWM) and FZS discontinuous PWM (FZS-DPWM) can be derived from conventional SVPWM and DPWM, respectively. The FZS-SVPWM and FZS-DPWM methods are effective in the CMV reduction aspect, whilst have the advantage of lower current ripple and acoustic noise than the existing reduced CMV PWM methods. Moreover, an FZS optimized PWM (FZSOPWM) is also proposed to improve performance. Simulation and experiment results validate the CMV and common mode current (CMC) reduction effect as well as the acoustic noise performance. The proposed topology is effective when both the low CMV/CMC and the low current ripple or acoustic noise are highly required.","PeriodicalId":365573,"journal":{"name":"2015 International Conference on Sustainable Mobility Applications, Renewables and Technology (SMART)","volume":"16 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115918044","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 : 2015-11-01DOI: 10.1109/SMART.2015.7399268
M. T. Esfidani, S. Raveshi, M. Shahsavari, A. Sedaghat
Today, the production of energy and electricity is one of the major concerns of mankind. Electricity generation by solar energy is considered as one of the alternatives to fossil fuels. Solar chimneys mechanism is based on a natural phenomenon. In this process the solar energy heat up the earth's surface and the surrounding air. Due to the density difference between cold air and warm air, heated air ascends and causes air circulation. In this study, mathematical modelling of solar chimney and governing equations of this system will be discussed. In order to validate the numerical results, upwind velocity in chimney has been compared with a reliable reference results. As well as, the optimized geometry of chimney has been investigated. Therefore, by the simulation of a solar chimney, performance (output power and efficiency) for changes in geometry and physical parameters such as chimney height, chimney diameter, radius collector and collector height is estimated.
{"title":"Computational study on design parameters of a solar chimney","authors":"M. T. Esfidani, S. Raveshi, M. Shahsavari, A. Sedaghat","doi":"10.1109/SMART.2015.7399268","DOIUrl":"https://doi.org/10.1109/SMART.2015.7399268","url":null,"abstract":"Today, the production of energy and electricity is one of the major concerns of mankind. Electricity generation by solar energy is considered as one of the alternatives to fossil fuels. Solar chimneys mechanism is based on a natural phenomenon. In this process the solar energy heat up the earth's surface and the surrounding air. Due to the density difference between cold air and warm air, heated air ascends and causes air circulation. In this study, mathematical modelling of solar chimney and governing equations of this system will be discussed. In order to validate the numerical results, upwind velocity in chimney has been compared with a reliable reference results. As well as, the optimized geometry of chimney has been investigated. Therefore, by the simulation of a solar chimney, performance (output power and efficiency) for changes in geometry and physical parameters such as chimney height, chimney diameter, radius collector and collector height is estimated.","PeriodicalId":365573,"journal":{"name":"2015 International Conference on Sustainable Mobility Applications, Renewables and Technology (SMART)","volume":"abs/2306.02858 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123358696","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 : 2015-11-01DOI: 10.1109/SMART.2015.7399216
M. Khatab, A. Shuraiji, Z. Zhu
An axial field switched flux permanent magnet (AFSFPM) machine possesses desirable advantageous performance since it combines the merits of both axial field permanent magnet (AFPM) and switched flux permanent magnet machines (SFPM). In this study, an axial field partitioned stator switched flux permanent magnet (AFPS-SFPM) machine has been individually optimized for maximum torque. Also, the influence of the slot shape on the machine performance has been investigated. It is found that higher torque can be obtained with parallel slot opening compared to radial slot opening. Furthermore, the effect of rotor iron piece shapes on the machine cogging torque is examined. It is shown that the machine torque ripple can be significantly reduced when the rotor iron piece edges are changed to be rounded border instead of flat shape. Moreover, a comparison between the initial and optimized machines has been carried out. It is concluded that the optimized machine has higher torque with less torque ripple compared to the initial machine.
{"title":"Parametric design optimization of axial field partitioned stator switched flux PM machine","authors":"M. Khatab, A. Shuraiji, Z. Zhu","doi":"10.1109/SMART.2015.7399216","DOIUrl":"https://doi.org/10.1109/SMART.2015.7399216","url":null,"abstract":"An axial field switched flux permanent magnet (AFSFPM) machine possesses desirable advantageous performance since it combines the merits of both axial field permanent magnet (AFPM) and switched flux permanent magnet machines (SFPM). In this study, an axial field partitioned stator switched flux permanent magnet (AFPS-SFPM) machine has been individually optimized for maximum torque. Also, the influence of the slot shape on the machine performance has been investigated. It is found that higher torque can be obtained with parallel slot opening compared to radial slot opening. Furthermore, the effect of rotor iron piece shapes on the machine cogging torque is examined. It is shown that the machine torque ripple can be significantly reduced when the rotor iron piece edges are changed to be rounded border instead of flat shape. Moreover, a comparison between the initial and optimized machines has been carried out. It is concluded that the optimized machine has higher torque with less torque ripple compared to the initial machine.","PeriodicalId":365573,"journal":{"name":"2015 International Conference on Sustainable Mobility Applications, Renewables and Technology (SMART)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124868133","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 : 2015-11-01DOI: 10.1109/SMART.2015.7399245
J. V. van Dam, J. Paulides, E. Lomonova, M. Dhaens
Many modern advanced electromagnetic devices, e.g. motors and actuators, use permanent magnets as a source of magnetic fields. The strong and reliable magnetic fields of today's rare-earth permanent magnets increase their force density. Most of them are based on the interaction between the magnetic field of permanent magnets and current-carrying coils. However, magnetic couplings or electromagnetic vibration isolation systems rely on the strong and position-dependent passive force between permanent magnets instead of an active force resulting from a current. An accurate, noise-free computational description of these interactions is therefore essential for future developments of these high-performance devices. The considered configurations are free-space unbounded problems and do not exhibit structural periodicity. As a three-dimensional magnetic field solution is required, the analytical surface charge method is the model of choice. The expressions for the interaction force between PMs with an (anti-)parallel, perpendicular, and rotated magnetization are derived considering a configuration with two PMs. These could be extended to include various other electromagnetic device structures. Further, the developments in the analytical surface charge expressions of the interaction forces between cuboidal permanent magnets are addressed. Finally, extensions to the surface charge method are proposed, aiming to create a fully 6-DoF permanent magnet interaction model, which can serve as a fast, analytical replacement to the finite element method.
{"title":"Machine and actuator design: Modeling 3-D fields and forces using the analytical surface charge expressions","authors":"J. V. van Dam, J. Paulides, E. Lomonova, M. Dhaens","doi":"10.1109/SMART.2015.7399245","DOIUrl":"https://doi.org/10.1109/SMART.2015.7399245","url":null,"abstract":"Many modern advanced electromagnetic devices, e.g. motors and actuators, use permanent magnets as a source of magnetic fields. The strong and reliable magnetic fields of today's rare-earth permanent magnets increase their force density. Most of them are based on the interaction between the magnetic field of permanent magnets and current-carrying coils. However, magnetic couplings or electromagnetic vibration isolation systems rely on the strong and position-dependent passive force between permanent magnets instead of an active force resulting from a current. An accurate, noise-free computational description of these interactions is therefore essential for future developments of these high-performance devices. The considered configurations are free-space unbounded problems and do not exhibit structural periodicity. As a three-dimensional magnetic field solution is required, the analytical surface charge method is the model of choice. The expressions for the interaction force between PMs with an (anti-)parallel, perpendicular, and rotated magnetization are derived considering a configuration with two PMs. These could be extended to include various other electromagnetic device structures. Further, the developments in the analytical surface charge expressions of the interaction forces between cuboidal permanent magnets are addressed. Finally, extensions to the surface charge method are proposed, aiming to create a fully 6-DoF permanent magnet interaction model, which can serve as a fast, analytical replacement to the finite element method.","PeriodicalId":365573,"journal":{"name":"2015 International Conference on Sustainable Mobility Applications, Renewables and Technology (SMART)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128602688","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 : 2015-11-01DOI: 10.1109/SMART.2015.7399217
D. Zito, C. Bruzzese, A. Raimo, E. Santini, A. Tessarolo
The use of linear machines (LMs) is increasing in research and industry fields. All kinds of LMs are studied: synchronous, induction, flux switching. Research is leading to overcome the known drawbacks of all these machines. Anyway the use of innovative direct-drive solutions are under study to obtain more efficient energy conversion, such as for marine field. As alternative to classical systems, linear force can be used to obtain a more efficient plant. Hydraulic drives used on board ship to empower rudders, stabilizing fins, anchor winches, etc., are often characterized by low efficiencies, heavy maintenance, frequent oil leaks and large weight and size. To overcome these drawbacks, an oil-free inverter-fed alternative drives can be conceived. In this paper a concept design of full-scale permanent magnet linear synchronous motor directly coupled to a twin rudder on board ship is presented, used as a servo-motor. A complete model of the electro-mechanic-hydraulic system in Simulink environment was built. Several simulations are performed to evaluate the servo-assistance capabilities. The results show the effectiveness of the electromagnetic drive servo-assistance and an increased overall efficiency of the steering gear. This research has been carried out in the framework of the Italian Defence Research National Program for the development of `dual use' technologies.
{"title":"A hybrid experimental drive concept of permanent magnet linear direct actuator servoed to a ship's hydraulic rudder","authors":"D. Zito, C. Bruzzese, A. Raimo, E. Santini, A. Tessarolo","doi":"10.1109/SMART.2015.7399217","DOIUrl":"https://doi.org/10.1109/SMART.2015.7399217","url":null,"abstract":"The use of linear machines (LMs) is increasing in research and industry fields. All kinds of LMs are studied: synchronous, induction, flux switching. Research is leading to overcome the known drawbacks of all these machines. Anyway the use of innovative direct-drive solutions are under study to obtain more efficient energy conversion, such as for marine field. As alternative to classical systems, linear force can be used to obtain a more efficient plant. Hydraulic drives used on board ship to empower rudders, stabilizing fins, anchor winches, etc., are often characterized by low efficiencies, heavy maintenance, frequent oil leaks and large weight and size. To overcome these drawbacks, an oil-free inverter-fed alternative drives can be conceived. In this paper a concept design of full-scale permanent magnet linear synchronous motor directly coupled to a twin rudder on board ship is presented, used as a servo-motor. A complete model of the electro-mechanic-hydraulic system in Simulink environment was built. Several simulations are performed to evaluate the servo-assistance capabilities. The results show the effectiveness of the electromagnetic drive servo-assistance and an increased overall efficiency of the steering gear. This research has been carried out in the framework of the Italian Defence Research National Program for the development of `dual use' technologies.","PeriodicalId":365573,"journal":{"name":"2015 International Conference on Sustainable Mobility Applications, Renewables and Technology (SMART)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125560029","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 : 2015-11-01DOI: 10.1109/SMART.2015.7399233
Mohamed Wael Zouaghi, I. Abdennadher, A. Masmoudi
The paper is aimed at a dual analytical characterization of the no-load operation of tabular-linear synchronous machines (T-LSMs) equipped by quasi-Halbach magnetized PMs in the mover. To start with, an approach to establish a 2D model based on the air gap flux density formulation is developed. Then, a second approach based on the magnetic equivalent circuit (MEC) modelling of T-LSMs is proposed with the derivation of a numerical procedure dedicated to its resolution. Both analytical models are applied to the prediction of the no-load features: the phase flux linkages, the back-EMFs, and the cogging force. A comparison of the obtained results with those computed by 2D finite element analysis (FEA) highlights the validity of the proposed analytical models.
{"title":"Characterization of the no-load operation of quasi-Halbach PM excited T-LSMs","authors":"Mohamed Wael Zouaghi, I. Abdennadher, A. Masmoudi","doi":"10.1109/SMART.2015.7399233","DOIUrl":"https://doi.org/10.1109/SMART.2015.7399233","url":null,"abstract":"The paper is aimed at a dual analytical characterization of the no-load operation of tabular-linear synchronous machines (T-LSMs) equipped by quasi-Halbach magnetized PMs in the mover. To start with, an approach to establish a 2D model based on the air gap flux density formulation is developed. Then, a second approach based on the magnetic equivalent circuit (MEC) modelling of T-LSMs is proposed with the derivation of a numerical procedure dedicated to its resolution. Both analytical models are applied to the prediction of the no-load features: the phase flux linkages, the back-EMFs, and the cogging force. A comparison of the obtained results with those computed by 2D finite element analysis (FEA) highlights the validity of the proposed analytical models.","PeriodicalId":365573,"journal":{"name":"2015 International Conference on Sustainable Mobility Applications, Renewables and Technology (SMART)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129010654","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 : 2015-11-01DOI: 10.1109/SMART.2015.7399251
I. Abdennadher, A. Masmoudi, M. Castiello, N. Bianchi
Concentrated winding fractional slot permanent magnet (PM) machines are currently considered as viable candidates for various applications. These machines offer many advantages over distributed winding PM machines, especially: reduced copper losses thanks to short end-windings, wide flux-weakening range, improved fault-tolerance capability, low cogging torque. These performance could not be accessed without a convenient selection of the slot-pole combinaisons. Within this background, the paper deals with a FEA-based investigation of the torque production capability exhibited by two topologies of fractional slot surface-mounted PM machines sharing the same number of slots in the stator while they differ by the number of poles in the rotor. The FEA results are validated by experiments carried out on prototypes of the machines under comparison.
{"title":"On the effect of the rotor polarity on the performance of fractional Slot SPM machines","authors":"I. Abdennadher, A. Masmoudi, M. Castiello, N. Bianchi","doi":"10.1109/SMART.2015.7399251","DOIUrl":"https://doi.org/10.1109/SMART.2015.7399251","url":null,"abstract":"Concentrated winding fractional slot permanent magnet (PM) machines are currently considered as viable candidates for various applications. These machines offer many advantages over distributed winding PM machines, especially: reduced copper losses thanks to short end-windings, wide flux-weakening range, improved fault-tolerance capability, low cogging torque. These performance could not be accessed without a convenient selection of the slot-pole combinaisons. Within this background, the paper deals with a FEA-based investigation of the torque production capability exhibited by two topologies of fractional slot surface-mounted PM machines sharing the same number of slots in the stator while they differ by the number of poles in the rotor. The FEA results are validated by experiments carried out on prototypes of the machines under comparison.","PeriodicalId":365573,"journal":{"name":"2015 International Conference on Sustainable Mobility Applications, Renewables and Technology (SMART)","volume":"29 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133919930","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 : 2015-11-01DOI: 10.1109/SMART.2015.7399244
N. Djukic, L. Encica, Johannes J. H. Paulides
Calculation of turn-to-turn capacitance (Ctt) in electrical machines (EMs) with formed windings with rectangular cross-section wire is presented. Three calculation methods are used for the calculation of Ctt in case of rectangular conductors - finite element (FE) method and two previously published analytical methods are applied. Three different sizes of wires are used for this calculation. Further, every model of the wire is considered as an ideal rectangle in the first case, i.e. without the corner radii, and in the second case as it exists in reality, including the corner radii.
{"title":"Electrical machines: Turn-to-turn capacitance in formed windings with rectangular cross-section wire","authors":"N. Djukic, L. Encica, Johannes J. H. Paulides","doi":"10.1109/SMART.2015.7399244","DOIUrl":"https://doi.org/10.1109/SMART.2015.7399244","url":null,"abstract":"Calculation of turn-to-turn capacitance (Ctt) in electrical machines (EMs) with formed windings with rectangular cross-section wire is presented. Three calculation methods are used for the calculation of Ctt in case of rectangular conductors - finite element (FE) method and two previously published analytical methods are applied. Three different sizes of wires are used for this calculation. Further, every model of the wire is considered as an ideal rectangle in the first case, i.e. without the corner radii, and in the second case as it exists in reality, including the corner radii.","PeriodicalId":365573,"journal":{"name":"2015 International Conference on Sustainable Mobility Applications, Renewables and Technology (SMART)","volume":"297 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121823880","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：