Pub Date : 2008-06-11DOI: 10.1109/SPEEDHAM.2008.4581301
V. Cecconi, V. Di Dio, A. D. Di Tommaso, S. Di Tommaso, D. La Cascia, R. Miceli
This paper proposes a new solution for wind electrical energy generating system (WEEGS). The system here taken into account is moved by a modular multiple blade fixed pitch wind turbine (MMBFPWT) and foresees a new MPPT algorithm whose main characteristics are low cost, low noise, buildings simplicity and modularity. The mathematical model of the entire WEEGS has been here developed taking into account all the components starting from the wind turbine and ending with the electrical grid. The WEEGS mathematical model has been implemented in Matlab-Simulink in order to carry out the simulations needed to test the effectiveness of the proposed WEEGS. The simulations results show the effectiveness of both the designed MMBFPWT and the conceived MPPT algorithm.
{"title":"Active power maximizing for Wind Electrical Energy Generating Systems moved by a Modular Multiple Blade Fixed Pitch Wind Turbine","authors":"V. Cecconi, V. Di Dio, A. D. Di Tommaso, S. Di Tommaso, D. La Cascia, R. Miceli","doi":"10.1109/SPEEDHAM.2008.4581301","DOIUrl":"https://doi.org/10.1109/SPEEDHAM.2008.4581301","url":null,"abstract":"This paper proposes a new solution for wind electrical energy generating system (WEEGS). The system here taken into account is moved by a modular multiple blade fixed pitch wind turbine (MMBFPWT) and foresees a new MPPT algorithm whose main characteristics are low cost, low noise, buildings simplicity and modularity. The mathematical model of the entire WEEGS has been here developed taking into account all the components starting from the wind turbine and ending with the electrical grid. The WEEGS mathematical model has been implemented in Matlab-Simulink in order to carry out the simulations needed to test the effectiveness of the proposed WEEGS. The simulations results show the effectiveness of both the designed MMBFPWT and the conceived MPPT algorithm.","PeriodicalId":345557,"journal":{"name":"2008 International Symposium on Power Electronics, Electrical Drives, Automation and Motion","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131154383","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 : 2008-06-11DOI: 10.1109/SPEEDHAM.2008.4581190
T. Ahonen, R. Tiainen, Juha Viholainen, J. Ahola, J. Kestila
Variable speed driven (VSD) pumps are nowadays widely used in industry applications. Variable speed pumping improves operational flexibility of the pump drive compared with throttle control. In many cases this results in energy cost savings. Nowadays, the performance of frequency converters allows their use as an intelligent monitoring device for the pump drive. This provides new possibilities for the maintenance and operation personnel. In this article, some functions provided by the frequency converter for pump condition and operation monitoring are explained. The applicability of a frequency converter for monitoring purposes is also discussed.
{"title":"Pump operation monitoring applying frequency converter","authors":"T. Ahonen, R. Tiainen, Juha Viholainen, J. Ahola, J. Kestila","doi":"10.1109/SPEEDHAM.2008.4581190","DOIUrl":"https://doi.org/10.1109/SPEEDHAM.2008.4581190","url":null,"abstract":"Variable speed driven (VSD) pumps are nowadays widely used in industry applications. Variable speed pumping improves operational flexibility of the pump drive compared with throttle control. In many cases this results in energy cost savings. Nowadays, the performance of frequency converters allows their use as an intelligent monitoring device for the pump drive. This provides new possibilities for the maintenance and operation personnel. In this article, some functions provided by the frequency converter for pump condition and operation monitoring are explained. The applicability of a frequency converter for monitoring purposes is also discussed.","PeriodicalId":345557,"journal":{"name":"2008 International Symposium on Power Electronics, Electrical Drives, Automation and Motion","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129854595","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 : 2008-06-11DOI: 10.1109/SPEEDHAM.2008.4581067
C. Pavlitov, Yassen Gorbounov, R. Rusinov, A. Alexandrov, K. Hadjov, D. Dontchev
The purpose of the paper is to point out an approach that ensures a mathematical description of different switched reluctance motors (SRM) with central geometrical symmetry of active poles, such as SRM6-4, SRM8-6, SRM12-8 etc. The SRM becomes popular nowadays because of the rapid development of control electronics and simulation facilities. In order to build up a proper SRM drive, it is necessary to create convenient simulation model of the motor. But the identification of this motor is rather sophisticated due to the fact that the stator inductance depends on both, position of the rotor and the stator current. This fact extremely complicates the mathematical model of the SRM, describing it by partial differential equations. To make the things easier, neural network descriptions are suggested. They simplify the process of identification using Matlab Simulink. These descriptions also reflect the high nonlinearity of the magnetic circuit and the influence of the air gap.
{"title":"An approach to identification of a class of Switched Reluctance Motors","authors":"C. Pavlitov, Yassen Gorbounov, R. Rusinov, A. Alexandrov, K. Hadjov, D. Dontchev","doi":"10.1109/SPEEDHAM.2008.4581067","DOIUrl":"https://doi.org/10.1109/SPEEDHAM.2008.4581067","url":null,"abstract":"The purpose of the paper is to point out an approach that ensures a mathematical description of different switched reluctance motors (SRM) with central geometrical symmetry of active poles, such as SRM6-4, SRM8-6, SRM12-8 etc. The SRM becomes popular nowadays because of the rapid development of control electronics and simulation facilities. In order to build up a proper SRM drive, it is necessary to create convenient simulation model of the motor. But the identification of this motor is rather sophisticated due to the fact that the stator inductance depends on both, position of the rotor and the stator current. This fact extremely complicates the mathematical model of the SRM, describing it by partial differential equations. To make the things easier, neural network descriptions are suggested. They simplify the process of identification using Matlab Simulink. These descriptions also reflect the high nonlinearity of the magnetic circuit and the influence of the air gap.","PeriodicalId":345557,"journal":{"name":"2008 International Symposium on Power Electronics, Electrical Drives, Automation and Motion","volume":"129 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132080664","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 : 2008-06-11DOI: 10.1109/SPEEDHAM.2008.4581063
S. Seifossadat, R. Kianinezhad, A. Ghasemi, M. Monadi
This paper describes the application of tuned power harmonic filters (PHFs) to a three phase shunt active power filter (APF) for the harmonic minimization created by a nonlinear load. This work is performed in order to show implementation of optimized harmonic power filters to a shunt active power filter can reduce total harmonic distortion (THD) without creating new system resonance. Steady state and transient performance of proposed hybrid active power filter (HAPF) were studied through computer simulation results. This results show the proposed hybrid active power filter eliminates THD less than 1 percent in two cycles.
{"title":"Quality improvement of shunt active power filter, using optimized tuned harmonic passive filters","authors":"S. Seifossadat, R. Kianinezhad, A. Ghasemi, M. Monadi","doi":"10.1109/SPEEDHAM.2008.4581063","DOIUrl":"https://doi.org/10.1109/SPEEDHAM.2008.4581063","url":null,"abstract":"This paper describes the application of tuned power harmonic filters (PHFs) to a three phase shunt active power filter (APF) for the harmonic minimization created by a nonlinear load. This work is performed in order to show implementation of optimized harmonic power filters to a shunt active power filter can reduce total harmonic distortion (THD) without creating new system resonance. Steady state and transient performance of proposed hybrid active power filter (HAPF) were studied through computer simulation results. This results show the proposed hybrid active power filter eliminates THD less than 1 percent in two cycles.","PeriodicalId":345557,"journal":{"name":"2008 International Symposium on Power Electronics, Electrical Drives, Automation and Motion","volume":"186 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132098105","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 : 2008-06-11DOI: 10.1109/SPEEDHAM.2008.4581119
B. Jeftenic, M. Bebic, M. Gvozdenovic, N. Rasic, L. Ristic, D. Jevtic, P. Lučič, D. Slavkovic
The paper presents a new method for load equalization of high power wound rotor induction motors driving the drums of belt conveyors. During exploitation, the diameters of the drums become unequal, due to the abrasion of rubber layer or sticking of dirt, leading to unequal load distribution between motors. The proposed solution of this problem implies the application of the ldquorotor resistor converterrdquo with the existing starting resistors. The rotor resistor converter consists of the group of three rotor resistors and the unit for their short-circuiting. For that purpose, the stator current of all motors is measured, and the instantaneous average value is used for the reference. This leads to the regime where one motor operates with the short-circuited rotor, with the semiconductor switch in the rotor resistor converter - always on. The currents of the remaining motors will be controlled by the PLC and the rotor resistor converters operating in the PWM regime, periodically short-circuiting the rotor terminals, i.e. the rotor resistors. In this way, the speed of the controlled motors will be reduced, to achieve equal load on all drives (load equalization). The results recorded on the laboratory model of the drive will be presented in the paper.
{"title":"Load equalization for high-power induction motors by speed control in limited range","authors":"B. Jeftenic, M. Bebic, M. Gvozdenovic, N. Rasic, L. Ristic, D. Jevtic, P. Lučič, D. Slavkovic","doi":"10.1109/SPEEDHAM.2008.4581119","DOIUrl":"https://doi.org/10.1109/SPEEDHAM.2008.4581119","url":null,"abstract":"The paper presents a new method for load equalization of high power wound rotor induction motors driving the drums of belt conveyors. During exploitation, the diameters of the drums become unequal, due to the abrasion of rubber layer or sticking of dirt, leading to unequal load distribution between motors. The proposed solution of this problem implies the application of the ldquorotor resistor converterrdquo with the existing starting resistors. The rotor resistor converter consists of the group of three rotor resistors and the unit for their short-circuiting. For that purpose, the stator current of all motors is measured, and the instantaneous average value is used for the reference. This leads to the regime where one motor operates with the short-circuited rotor, with the semiconductor switch in the rotor resistor converter - always on. The currents of the remaining motors will be controlled by the PLC and the rotor resistor converters operating in the PWM regime, periodically short-circuiting the rotor terminals, i.e. the rotor resistors. In this way, the speed of the controlled motors will be reduced, to achieve equal load on all drives (load equalization). The results recorded on the laboratory model of the drive will be presented in the paper.","PeriodicalId":345557,"journal":{"name":"2008 International Symposium on Power Electronics, Electrical Drives, Automation and Motion","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132903199","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 : 2008-06-11DOI: 10.1109/SPEEDHAM.2008.4581313
A. Binder
Electrical drives consume with ca. 60 % the largest part of electrical energy in Germany. Until 2012 the generation of green house gas, caused by electrical drives, shall be reduced by 39 million tons p. a. within the EU. The here presented energy saving potentials and the possibilities for future improvements of drive efficiency show, that the above noted aims may be reached, if the described measures are taken consequently and in time.
{"title":"Potentials for energy saving with modern drive technology — a survey","authors":"A. Binder","doi":"10.1109/SPEEDHAM.2008.4581313","DOIUrl":"https://doi.org/10.1109/SPEEDHAM.2008.4581313","url":null,"abstract":"Electrical drives consume with ca. 60 % the largest part of electrical energy in Germany. Until 2012 the generation of green house gas, caused by electrical drives, shall be reduced by 39 million tons p. a. within the EU. The here presented energy saving potentials and the possibilities for future improvements of drive efficiency show, that the above noted aims may be reached, if the described measures are taken consequently and in time.","PeriodicalId":345557,"journal":{"name":"2008 International Symposium on Power Electronics, Electrical Drives, Automation and Motion","volume":"462 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132506880","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 : 2008-06-11DOI: 10.1109/SPEEDHAM.2008.4581244
D. Casini, G. Marola
In this paper a solar battery charging procedure for NiHM batteries is presented. The article shows how it is possible to detect a true full state of charge avoiding false charge termination due to changing illumination conditions.
{"title":"Solar battery charger for NiMH batteries","authors":"D. Casini, G. Marola","doi":"10.1109/SPEEDHAM.2008.4581244","DOIUrl":"https://doi.org/10.1109/SPEEDHAM.2008.4581244","url":null,"abstract":"In this paper a solar battery charging procedure for NiHM batteries is presented. The article shows how it is possible to detect a true full state of charge avoiding false charge termination due to changing illumination conditions.","PeriodicalId":345557,"journal":{"name":"2008 International Symposium on Power Electronics, Electrical Drives, Automation and Motion","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133267845","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 : 2008-06-11DOI: 10.1109/SPEEDHAM.2008.4581092
M. Khov, J. Régnier, J. Faucher
In this paper, a new technique of on-line detection of inter-turn short circuits in stator of permanent magnet synchronous motor (PMSM) is proposed. The study is focused on a PMSM with non sinusoidal electromotive force (emf). The technique is formulated by combining extended Parkpsilas vector approach and classical recursive least squares algorithm (RLS). The faults are detected by analysing the abnormal variation of electrical estimated parameters of the 2-phases model in the Extended Park frame.
{"title":"Detection of turn short-circuit faults in stator of PMSM by on-line parameter estimation","authors":"M. Khov, J. Régnier, J. Faucher","doi":"10.1109/SPEEDHAM.2008.4581092","DOIUrl":"https://doi.org/10.1109/SPEEDHAM.2008.4581092","url":null,"abstract":"In this paper, a new technique of on-line detection of inter-turn short circuits in stator of permanent magnet synchronous motor (PMSM) is proposed. The study is focused on a PMSM with non sinusoidal electromotive force (emf). The technique is formulated by combining extended Parkpsilas vector approach and classical recursive least squares algorithm (RLS). The faults are detected by analysing the abnormal variation of electrical estimated parameters of the 2-phases model in the Extended Park frame.","PeriodicalId":345557,"journal":{"name":"2008 International Symposium on Power Electronics, Electrical Drives, Automation and Motion","volume":"41 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114024366","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 : 2008-06-11DOI: 10.1109/SPEEDHAM.2008.4581217
T. Mazzuca, M. Torre
Once delineated the criteria followed to define main electrical distribution and propulsion systems configurations for the FREMM frigates, will be described the prerogatives of the peculiar and innovative architecture chosen in relation to ship operative profile, and will be outlined the system engineering activities to be carried out to guarantee a safe and efficient plant operation and to benefit from technical innovations adopted.
{"title":"The FREMM architecture: A first step towards innovation","authors":"T. Mazzuca, M. Torre","doi":"10.1109/SPEEDHAM.2008.4581217","DOIUrl":"https://doi.org/10.1109/SPEEDHAM.2008.4581217","url":null,"abstract":"Once delineated the criteria followed to define main electrical distribution and propulsion systems configurations for the FREMM frigates, will be described the prerogatives of the peculiar and innovative architecture chosen in relation to ship operative profile, and will be outlined the system engineering activities to be carried out to guarantee a safe and efficient plant operation and to benefit from technical innovations adopted.","PeriodicalId":345557,"journal":{"name":"2008 International Symposium on Power Electronics, Electrical Drives, Automation and Motion","volume":"298 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114485491","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 : 2008-06-11DOI: 10.1109/SPEEDHAM.2008.4581074
E. Afjei, B. Mazloomnezhad, A. Seyadatan
The switched reluctance (SR) motor is a simple and robust machine, which has found application over a wide power and speed ranges in different shapes and geometries. This paper briefly reviews the different types of SR motors with different geometries and then presents a new configuration for a two phase SR motor with shaped and skewed rotor poles. This motor has the ability to start and run in a specified direction without any difficulties. In another words the motor will always have starting torque no matter where the rotor position is. It also presents a centrifugal switch mounted on the motor shaft for a sudden advancement of current-pulses relative to rotor position after reaching a preset motor speed in order to develop higher torque at starting. To evaluate the motor performance, two types of analysis, namely numerical technique and experimental study have been utilized. In the numerical analysis, due to highly non-linear nature of the motor, a three dimensional finite element analysis is employed, whereas in the experimental study, a proto-type motor has been built and tested.
{"title":"A novel two phase configuration for Switched reluctance motor with high starting torque","authors":"E. Afjei, B. Mazloomnezhad, A. Seyadatan","doi":"10.1109/SPEEDHAM.2008.4581074","DOIUrl":"https://doi.org/10.1109/SPEEDHAM.2008.4581074","url":null,"abstract":"The switched reluctance (SR) motor is a simple and robust machine, which has found application over a wide power and speed ranges in different shapes and geometries. This paper briefly reviews the different types of SR motors with different geometries and then presents a new configuration for a two phase SR motor with shaped and skewed rotor poles. This motor has the ability to start and run in a specified direction without any difficulties. In another words the motor will always have starting torque no matter where the rotor position is. It also presents a centrifugal switch mounted on the motor shaft for a sudden advancement of current-pulses relative to rotor position after reaching a preset motor speed in order to develop higher torque at starting. To evaluate the motor performance, two types of analysis, namely numerical technique and experimental study have been utilized. In the numerical analysis, due to highly non-linear nature of the motor, a three dimensional finite element analysis is employed, whereas in the experimental study, a proto-type motor has been built and tested.","PeriodicalId":345557,"journal":{"name":"2008 International Symposium on Power Electronics, Electrical Drives, Automation and Motion","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114592784","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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