Pub Date : 2012-11-12DOI: 10.1109/ICELMACH.2012.6350028
A. Conradi, Dominique Melot de Beauregard, B. Benthaus, L. Gołębiowski
The dimensioning of the drives of roller conveyors used in intralogistic facilities has to meet three main criteria, defined by minimum requirements on the dynamics, safety and durability considerations and the energy efficiency of the conveyor system. In order to investigate the influence of rated machine power of commonly used induction machines on these dimensioning criteria, a study on the most common transient mechanical incidents and most dangerous electrical failures was performed, using an analytical simulation model of the coupled system of the drive itself as well as the conveyer-system comprising the rollers, the drive-belt and the conveyed boxes.
{"title":"Approach for a demand compliant choice of induction machines used in roller conveyors","authors":"A. Conradi, Dominique Melot de Beauregard, B. Benthaus, L. Gołębiowski","doi":"10.1109/ICELMACH.2012.6350028","DOIUrl":"https://doi.org/10.1109/ICELMACH.2012.6350028","url":null,"abstract":"The dimensioning of the drives of roller conveyors used in intralogistic facilities has to meet three main criteria, defined by minimum requirements on the dynamics, safety and durability considerations and the energy efficiency of the conveyor system. In order to investigate the influence of rated machine power of commonly used induction machines on these dimensioning criteria, a study on the most common transient mechanical incidents and most dangerous electrical failures was performed, using an analytical simulation model of the coupled system of the drive itself as well as the conveyer-system comprising the rollers, the drive-belt and the conveyed boxes.","PeriodicalId":6309,"journal":{"name":"2012 XXth International Conference on Electrical Machines","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75195018","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 : 2012-11-12DOI: 10.1109/ICELMACH.2012.6350238
V. Climente-Alarcón, J. Antonino-Daviu, F. Vedreno-Santos, R. Puche-Panadero
In recent years, the study of transients of induction motors for diagnosis purposes has gained strength in order to overcome some inherent problems of the classical diagnosis of such machines, which uses Fourier analysis of steady-state quantities. Novel time-frequency techniques have been applied to these transient quantities, in order to detect the characteristic evolutions of fault-related harmonic components. The detection of these patterns, which are usually specific for each type of fault, enables reliable diagnostic of the corresponding failures. In this context, most of the works hitherto developed have been based on analysis of currents. However, in some applications vibration measurements are also available. The goal of this work is to validate the applicability of this transient-based diagnosis framework to vibration measurements. A specific time-frequency decomposition tool, the Wigner-Ville Distribution, is proposed. Experimental results prove the ability of the approach to complement the information obtained from the current analysis.
{"title":"Vibration transient detection of broken bars by PSH sidebands","authors":"V. Climente-Alarcón, J. Antonino-Daviu, F. Vedreno-Santos, R. Puche-Panadero","doi":"10.1109/ICELMACH.2012.6350238","DOIUrl":"https://doi.org/10.1109/ICELMACH.2012.6350238","url":null,"abstract":"In recent years, the study of transients of induction motors for diagnosis purposes has gained strength in order to overcome some inherent problems of the classical diagnosis of such machines, which uses Fourier analysis of steady-state quantities. Novel time-frequency techniques have been applied to these transient quantities, in order to detect the characteristic evolutions of fault-related harmonic components. The detection of these patterns, which are usually specific for each type of fault, enables reliable diagnostic of the corresponding failures. In this context, most of the works hitherto developed have been based on analysis of currents. However, in some applications vibration measurements are also available. The goal of this work is to validate the applicability of this transient-based diagnosis framework to vibration measurements. A specific time-frequency decomposition tool, the Wigner-Ville Distribution, is proposed. Experimental results prove the ability of the approach to complement the information obtained from the current analysis.","PeriodicalId":6309,"journal":{"name":"2012 XXth International Conference on Electrical Machines","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75269697","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 : 2012-11-12DOI: 10.1109/ICELMACH.2012.6349886
A. Aguiar, A. Merkhouf, K. Al-haddad
The electromagnetic modeling and simulation of existing hydro electrical generators in operation always requires a large number of variables to carry out an accurate study and to be able to properly validate the different test results. Simulation can be affected by many parameters, such as: The air gap size (the design air gap is always different from the operation air gap due to the thermal expansion) and its uniformity. In this paper, a sensitivity analysis taking into account the air gap length and the excitation current was performed. The sensitivity analysis based on finite element simulation results was performed on an existing large hydro generator of 122.6 MVA, 13.8 kV, 60 Hz, 60 poles with 504 slots, 120 rpm. The obtained results were compared to the certain measured parameters such as the air gap flux density, line current and magnetic core losses.
{"title":"Influence of the air gap length on the magnetic core loss in large hydro generator","authors":"A. Aguiar, A. Merkhouf, K. Al-haddad","doi":"10.1109/ICELMACH.2012.6349886","DOIUrl":"https://doi.org/10.1109/ICELMACH.2012.6349886","url":null,"abstract":"The electromagnetic modeling and simulation of existing hydro electrical generators in operation always requires a large number of variables to carry out an accurate study and to be able to properly validate the different test results. Simulation can be affected by many parameters, such as: The air gap size (the design air gap is always different from the operation air gap due to the thermal expansion) and its uniformity. In this paper, a sensitivity analysis taking into account the air gap length and the excitation current was performed. The sensitivity analysis based on finite element simulation results was performed on an existing large hydro generator of 122.6 MVA, 13.8 kV, 60 Hz, 60 poles with 504 slots, 120 rpm. The obtained results were compared to the certain measured parameters such as the air gap flux density, line current and magnetic core losses.","PeriodicalId":6309,"journal":{"name":"2012 XXth International Conference on Electrical Machines","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75292211","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 : 2012-11-12DOI: 10.1109/ICELMACH.2012.6350227
A. Daanoune, A. Foggia, L. Garbuio, J. Mipo, L. Li
Modeling of hybrid excitation synchronous machines is a crucial step for the determination of control laws. The combination of analytical and numerical models is very useful for high model reliability without being penalized on the computation time. With this method, a field-weakening control strategy is used in this paper. The excitation flux is controlled beyond the base speed through torque angle and excitation current while maximizing total efficiency of the machine.
{"title":"Modeling and optimal control of a hybrid excitation synchronous machine by combining analytical and finite element models","authors":"A. Daanoune, A. Foggia, L. Garbuio, J. Mipo, L. Li","doi":"10.1109/ICELMACH.2012.6350227","DOIUrl":"https://doi.org/10.1109/ICELMACH.2012.6350227","url":null,"abstract":"Modeling of hybrid excitation synchronous machines is a crucial step for the determination of control laws. The combination of analytical and numerical models is very useful for high model reliability without being penalized on the computation time. With this method, a field-weakening control strategy is used in this paper. The excitation flux is controlled beyond the base speed through torque angle and excitation current while maximizing total efficiency of the machine.","PeriodicalId":6309,"journal":{"name":"2012 XXth International Conference on Electrical Machines","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74666248","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 : 2012-11-12DOI: 10.1109/ICELMACH.2012.6349928
L. Papini, C. Gerada, P. Bolognesi
Electrical machines are often used for challenging operating requirements. Some particular applications require high torque density, low speed, minimum weight and compact design. Vernier Hybrid Machines (VHMs) are known as high torque density machines for low speed applications, yet affected by low power factor. In this paper a VHM is analyzed using a computationally efficient analytical methodology whose results are compared to those obtained using Finite Element (FE) method.
{"title":"Comparison of analytical and FE modeling of Vernier Hybrid Machine","authors":"L. Papini, C. Gerada, P. Bolognesi","doi":"10.1109/ICELMACH.2012.6349928","DOIUrl":"https://doi.org/10.1109/ICELMACH.2012.6349928","url":null,"abstract":"Electrical machines are often used for challenging operating requirements. Some particular applications require high torque density, low speed, minimum weight and compact design. Vernier Hybrid Machines (VHMs) are known as high torque density machines for low speed applications, yet affected by low power factor. In this paper a VHM is analyzed using a computationally efficient analytical methodology whose results are compared to those obtained using Finite Element (FE) method.","PeriodicalId":6309,"journal":{"name":"2012 XXth International Conference on Electrical Machines","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74868804","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 : 2012-11-12DOI: 10.1109/ICELMACH.2012.6350044
N. Simpson, P. Mellor, R. Wróbel
The equivalent bulk thermal properties of electrical winding samples are measured experimentally. An analytical relation and a finite element thermal model of the conductor and insulation amalgam are compared with the test results. The thermal parameters are verified by the construction and dc test of three air-cored inductors with differing material configurations. The finite element implementation allows the effects of conductor placement, dimensions, and insulation system to be studied and facilitates an initial estimate of the thermal properties of a winding employed in an electrical machine design.
{"title":"Estimation of equivalent thermal parameters of electrical windings","authors":"N. Simpson, P. Mellor, R. Wróbel","doi":"10.1109/ICELMACH.2012.6350044","DOIUrl":"https://doi.org/10.1109/ICELMACH.2012.6350044","url":null,"abstract":"The equivalent bulk thermal properties of electrical winding samples are measured experimentally. An analytical relation and a finite element thermal model of the conductor and insulation amalgam are compared with the test results. The thermal parameters are verified by the construction and dc test of three air-cored inductors with differing material configurations. The finite element implementation allows the effects of conductor placement, dimensions, and insulation system to be studied and facilitates an initial estimate of the thermal properties of a winding employed in an electrical machine design.","PeriodicalId":6309,"journal":{"name":"2012 XXth International Conference on Electrical Machines","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73353206","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 : 2012-11-12DOI: 10.1109/ICELMACH.2012.6350270
M. Zaouia, N. Benamrouche, A. Djerdir
The aim of this paper is to develop an electromagnetic-mechanical model to analyse an Electromagnetic Energy Recovery Damper (EERD) for automotive applications to quantify the electrical power for various cycle of vibrations created by road irregularities. The EERD transforms the kinetic energy due to vibrations, to electrical energy. The developed model is based on the governing magnetic field equation expressed in terms of magnetic vector potential solved using the nodal-based finite element method and then coupled to the electromagnetic and mechanical equations obtained after modelling a quarter of vehicle system. The coupling is carried out firstly through the magnetic force, and then by the modified flux distribution due to the moving part displacements simulated by the MacroElement method. The cycles of vibrations are transmitted to the device as vertical displacements. The obtained results represent principally, the induced electromotive force and the electrical power output.
{"title":"Study and analysis of an Electromagnetic Energy Recovery Damper (EERD) for automotive applications","authors":"M. Zaouia, N. Benamrouche, A. Djerdir","doi":"10.1109/ICELMACH.2012.6350270","DOIUrl":"https://doi.org/10.1109/ICELMACH.2012.6350270","url":null,"abstract":"The aim of this paper is to develop an electromagnetic-mechanical model to analyse an Electromagnetic Energy Recovery Damper (EERD) for automotive applications to quantify the electrical power for various cycle of vibrations created by road irregularities. The EERD transforms the kinetic energy due to vibrations, to electrical energy. The developed model is based on the governing magnetic field equation expressed in terms of magnetic vector potential solved using the nodal-based finite element method and then coupled to the electromagnetic and mechanical equations obtained after modelling a quarter of vehicle system. The coupling is carried out firstly through the magnetic force, and then by the modified flux distribution due to the moving part displacements simulated by the MacroElement method. The cycles of vibrations are transmitted to the device as vertical displacements. The obtained results represent principally, the induced electromotive force and the electrical power output.","PeriodicalId":6309,"journal":{"name":"2012 XXth International Conference on Electrical Machines","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75376961","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 : 2012-11-12DOI: 10.1109/ICELMACH.2012.6350172
K. Basu, V. Debusschere, S. Bacha
Identification of electrical appliance usage(s) from the meter panel power reading has become an area of study on its own. Many approaches over the years have used signal processing approaches at a high sampling rate (1 second typically) to evaluate the appliance load signature and subsequently used pattern recognition techniques for identification from a previously trained classifier(s). The proposed approach tries to identify the usage of high power consuming appliance(s) by using the aggregate power consumption at 10 minutes interval from the meter panel. The novelty of the approach lies in using a time series windowing approach which gives addition information about an aggregate power state. The usage of hour of the day as input to the systems also takes into account the temporal behavior of residential users. The usage of Multi-label classification approach for identification is also new for this domain. The model is tested over the IRISE data set and the results are encouraging. Due to its low sampling rate with time stamped aggregate power at 10 minutes scale as the only input from the user, the proposed approach is both practical and affordable.
{"title":"Load identification from power recordings at meter panel in residential households","authors":"K. Basu, V. Debusschere, S. Bacha","doi":"10.1109/ICELMACH.2012.6350172","DOIUrl":"https://doi.org/10.1109/ICELMACH.2012.6350172","url":null,"abstract":"Identification of electrical appliance usage(s) from the meter panel power reading has become an area of study on its own. Many approaches over the years have used signal processing approaches at a high sampling rate (1 second typically) to evaluate the appliance load signature and subsequently used pattern recognition techniques for identification from a previously trained classifier(s). The proposed approach tries to identify the usage of high power consuming appliance(s) by using the aggregate power consumption at 10 minutes interval from the meter panel. The novelty of the approach lies in using a time series windowing approach which gives addition information about an aggregate power state. The usage of hour of the day as input to the systems also takes into account the temporal behavior of residential users. The usage of Multi-label classification approach for identification is also new for this domain. The model is tested over the IRISE data set and the results are encouraging. Due to its low sampling rate with time stamped aggregate power at 10 minutes scale as the only input from the user, the proposed approach is both practical and affordable.","PeriodicalId":6309,"journal":{"name":"2012 XXth International Conference on Electrical Machines","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75567103","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 : 2012-11-12DOI: 10.1109/ICELMACH.2012.6349832
M. Ruviaro, F. Runcos
This paper presents and analyses a 350kW brushless doubly fed three-phase induction machine with its wound rotor circuit connected to flat plane rotary transformers. It presents the advantages of substituting brushes and slip-rings by rotary transformers. In addition, it shows rotary transformer design and presents the doubly fed induction machine operation. The steady state model considers electrical circuit techniques to provide information about current, power factor and efficiency on load. Equivalent circuit parameters used on simulations were obtained through analytical calculation of a prototype.
{"title":"A brushless doubly fed induction machine with flat plane rotary transformers","authors":"M. Ruviaro, F. Runcos","doi":"10.1109/ICELMACH.2012.6349832","DOIUrl":"https://doi.org/10.1109/ICELMACH.2012.6349832","url":null,"abstract":"This paper presents and analyses a 350kW brushless doubly fed three-phase induction machine with its wound rotor circuit connected to flat plane rotary transformers. It presents the advantages of substituting brushes and slip-rings by rotary transformers. In addition, it shows rotary transformer design and presents the doubly fed induction machine operation. The steady state model considers electrical circuit techniques to provide information about current, power factor and efficiency on load. Equivalent circuit parameters used on simulations were obtained through analytical calculation of a prototype.","PeriodicalId":6309,"journal":{"name":"2012 XXth International Conference on Electrical Machines","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75710413","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 : 2012-11-12DOI: 10.1109/ICELMACH.2012.6350317
A. Negoita, A. N'Diaye, A. Djerdir
The paper presents a study concerning the influence of the capacitor value on the magnetic noise of the network and inverter-fed permanent split capacitor induction motor. To this aim, a numerical model of a 0.75 kW, 1500 rpm, permanent split-capacitor induction motor is developed under Flux2D Finite Element Software, taking into account the case of inverter supply by coupling Flux2D with Matlab/Simulink. Also, a mechanical analysis, using Ansys3D is performed on the studied motor. In order to verify the obtained results, noise measurements are performed on the network and inverter-fed single phase 0.75 kW, 1500 rpm, permanent split-capacitor induction motor fitted with different capacitor values (25 μF, 36 μF, 50 μF).
{"title":"The magnetic noise of the inverter-fed permanent split-capacitor induction motor","authors":"A. Negoita, A. N'Diaye, A. Djerdir","doi":"10.1109/ICELMACH.2012.6350317","DOIUrl":"https://doi.org/10.1109/ICELMACH.2012.6350317","url":null,"abstract":"The paper presents a study concerning the influence of the capacitor value on the magnetic noise of the network and inverter-fed permanent split capacitor induction motor. To this aim, a numerical model of a 0.75 kW, 1500 rpm, permanent split-capacitor induction motor is developed under Flux2D Finite Element Software, taking into account the case of inverter supply by coupling Flux2D with Matlab/Simulink. Also, a mechanical analysis, using Ansys3D is performed on the studied motor. In order to verify the obtained results, noise measurements are performed on the network and inverter-fed single phase 0.75 kW, 1500 rpm, permanent split-capacitor induction motor fitted with different capacitor values (25 μF, 36 μF, 50 μF).","PeriodicalId":6309,"journal":{"name":"2012 XXth International Conference on Electrical Machines","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75878874","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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