Pub Date : 2008-06-11DOI: 10.1109/SPEEDHAM.2008.4581136
J. Zarebski, J. Dąbrowski
In the paper the problem of modelling DC characteristics of SiC power Schottky diodes with thermal effects taken into account is considered. The electrothermal model of the investigated devices was formulated for SPICE and experimentally verified. The evaluation of accuracy of the elaborated model has been performed by comparison of measured and calculated characteristics of a selected SiC power Schottky diode.
{"title":"Non-isothermal characteristics of SiC power Schottky diodes","authors":"J. Zarebski, J. Dąbrowski","doi":"10.1109/SPEEDHAM.2008.4581136","DOIUrl":"https://doi.org/10.1109/SPEEDHAM.2008.4581136","url":null,"abstract":"In the paper the problem of modelling DC characteristics of SiC power Schottky diodes with thermal effects taken into account is considered. The electrothermal model of the investigated devices was formulated for SPICE and experimentally verified. The evaluation of accuracy of the elaborated model has been performed by comparison of measured and calculated characteristics of a selected SiC power Schottky diode.","PeriodicalId":345557,"journal":{"name":"2008 International Symposium on Power Electronics, Electrical Drives, Automation and Motion","volume":"6 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":"115548523","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.2008.4581322
G. Griva, V. Oleschuk, F. Profumo
This paper presents results of application of a new method of synchronized pulsewidth modulation (PWM) for control of symmetrical six-phase traction drives with two DC sources. The six-phase (dual three-phase) drive system includes in this case a symmetrical induction motor which has two sets of windings spatially shifted by 60 electrical degrees. Analysis of operation of the symmetrical six-phase system with synchronized PWM, providing balanced control of the system, has been performed. Simulation results are given for basic continuous and discontinuous versions of synchronized pulsewidth modulation. The spectra of the phase voltage of the six-phase vehicle drives with algorithms of synchronized PWM do not contain even harmonics and sub-harmonics, which is especially important for the high power/current applications.
{"title":"Hybrid traction drive with symmetrical split-phase motor controlled by synchronized PWM","authors":"G. Griva, V. Oleschuk, F. Profumo","doi":"10.1109/SPEEDHAM.2008.4581322","DOIUrl":"https://doi.org/10.1109/SPEEDHAM.2008.4581322","url":null,"abstract":"This paper presents results of application of a new method of synchronized pulsewidth modulation (PWM) for control of symmetrical six-phase traction drives with two DC sources. The six-phase (dual three-phase) drive system includes in this case a symmetrical induction motor which has two sets of windings spatially shifted by 60 electrical degrees. Analysis of operation of the symmetrical six-phase system with synchronized PWM, providing balanced control of the system, has been performed. Simulation results are given for basic continuous and discontinuous versions of synchronized pulsewidth modulation. The spectra of the phase voltage of the six-phase vehicle drives with algorithms of synchronized PWM do not contain even harmonics and sub-harmonics, which is especially important for the high power/current applications.","PeriodicalId":345557,"journal":{"name":"2008 International Symposium on Power Electronics, Electrical Drives, Automation and Motion","volume":"427 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":"114208281","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.2008.4581140
M. Jokinen, S. Saarakkala, M. Niemela, R. Pollanen, J. Pyrhonen
Production rate plays an important role in industrial applications, which means higher demands for accelerations and speeds of the systems. The requirements for accuracy and repeatability are also increasing. A solution for these demands is a high-speed tooth belt linear drive; however, the drawbacks of system of this kind are non-linear friction and flexibility of the belt, which make the precision control of the system difficult. In this paper, the frictions and flexibility of the high-speed tooth belt linear drive are analyzed.
{"title":"Physical drawbacks of linear high-speed tooth belt drives","authors":"M. Jokinen, S. Saarakkala, M. Niemela, R. Pollanen, J. Pyrhonen","doi":"10.1109/SPEEDHAM.2008.4581140","DOIUrl":"https://doi.org/10.1109/SPEEDHAM.2008.4581140","url":null,"abstract":"Production rate plays an important role in industrial applications, which means higher demands for accelerations and speeds of the systems. The requirements for accuracy and repeatability are also increasing. A solution for these demands is a high-speed tooth belt linear drive; however, the drawbacks of system of this kind are non-linear friction and flexibility of the belt, which make the precision control of the system difficult. In this paper, the frictions and flexibility of the high-speed tooth belt linear drive are analyzed.","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":"114419803","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.2008.4581221
J. Martin, P. Ladoux, B. Chauchat, J. Casarin, S. Nicolau
Nowadays, in railway traction, in order to reduce the weight and the size of the input transformer, several structures using intermediate medium frequency stages are under consideration. The major problem is to reach a high switching frequency with high voltage devices. In this paper, the authors propose a soft commutated topology based on dual structure association. The switching losses are calculated considering 6.5 kV IGBTs in soft commutation mode.
{"title":"Medium frequency transformer for railway traction: Soft switching converter with high voltage semi-conductors","authors":"J. Martin, P. Ladoux, B. Chauchat, J. Casarin, S. Nicolau","doi":"10.1109/SPEEDHAM.2008.4581221","DOIUrl":"https://doi.org/10.1109/SPEEDHAM.2008.4581221","url":null,"abstract":"Nowadays, in railway traction, in order to reduce the weight and the size of the input transformer, several structures using intermediate medium frequency stages are under consideration. The major problem is to reach a high switching frequency with high voltage devices. In this paper, the authors propose a soft commutated topology based on dual structure association. The switching losses are calculated considering 6.5 kV IGBTs in soft commutation mode.","PeriodicalId":345557,"journal":{"name":"2008 International Symposium on Power Electronics, Electrical Drives, Automation and Motion","volume":"51 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":"114573205","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.2008.4581176
T. Vyncke, Frederik M. L. L. De Belie, René Boel, Jan A. A. Melkebeek, Yonghua Cheng, P. Lataire
Modelling and identification of synchronous machines has attracted much attention during the past decades. Although the standstill frequency response (SSFR) method has become standardized (IEEE Std. 115) it has some disadvantages (e.g. it is a time consuming method). To overcome these, the use of broadband excitation has been proposed in the literature. In this paper the use of broadband excitation for the frequency domain identification of permanent magnet synchronous machines is investigated. The measurement set-up and method are discussed, with special attention to the selection of the applied excitation signals. Three broadband signals suitable for frequency domain parameter identification are discussed and compared in measurements. The obtained frequency domain data can be used in different applications. Examples are given in this paper. Furthermore the extraction of a parametric model from the nonparametric frequency domain data is briefly discussed. The identified parameters can be used to study the influence of saturation or can be applied in the simulation and control of permanent magnet synchronous machines. Measurement results demonstrate that broadband frequency domain identification can be applied to extract the parameters (inductances) of permanent magnet synchronous machines. Moreover, the reproducibility of the method is shown to be good as the variation in the parameters obtained in different measurement sessions is low. Future work on the subject will include a closer investigation of the variations in the obtained parameters, the use of higher order models and the application of more complex estimation algorithms.
{"title":"Identification of PM synchronous machines in the frequency domain by broadband excitation","authors":"T. Vyncke, Frederik M. L. L. De Belie, René Boel, Jan A. A. Melkebeek, Yonghua Cheng, P. Lataire","doi":"10.1109/SPEEDHAM.2008.4581176","DOIUrl":"https://doi.org/10.1109/SPEEDHAM.2008.4581176","url":null,"abstract":"Modelling and identification of synchronous machines has attracted much attention during the past decades. Although the standstill frequency response (SSFR) method has become standardized (IEEE Std. 115) it has some disadvantages (e.g. it is a time consuming method). To overcome these, the use of broadband excitation has been proposed in the literature. In this paper the use of broadband excitation for the frequency domain identification of permanent magnet synchronous machines is investigated. The measurement set-up and method are discussed, with special attention to the selection of the applied excitation signals. Three broadband signals suitable for frequency domain parameter identification are discussed and compared in measurements. The obtained frequency domain data can be used in different applications. Examples are given in this paper. Furthermore the extraction of a parametric model from the nonparametric frequency domain data is briefly discussed. The identified parameters can be used to study the influence of saturation or can be applied in the simulation and control of permanent magnet synchronous machines. Measurement results demonstrate that broadband frequency domain identification can be applied to extract the parameters (inductances) of permanent magnet synchronous machines. Moreover, the reproducibility of the method is shown to be good as the variation in the parameters obtained in different measurement sessions is low. Future work on the subject will include a closer investigation of the variations in the obtained parameters, the use of higher order models and the application of more complex estimation algorithms.","PeriodicalId":345557,"journal":{"name":"2008 International Symposium on Power Electronics, Electrical Drives, Automation and Motion","volume":"193 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":"121868947","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.2008.4581287
A. Bitoleanu, M. Popescu, M. Dobriceanu
The paper is focused on the analysis of the power quality at the common connection point of the electrical grid that supplies the trams in the city of Craiova, Romania. For one week there has been performed the measuring of the current and voltage harmonics and of the harmonic distortion factors (HDF). There has been noticed the distortion of the current far beyond the admitted limits and the broad variation of the total harmonic distortion factor of the current. The causes have been determined and solutions for reducing the extent of current distortion have been recommended. The problem of the active filtering of the current is also discussed.
{"title":"Power quality in local transportation network - the case study","authors":"A. Bitoleanu, M. Popescu, M. Dobriceanu","doi":"10.1109/SPEEDHAM.2008.4581287","DOIUrl":"https://doi.org/10.1109/SPEEDHAM.2008.4581287","url":null,"abstract":"The paper is focused on the analysis of the power quality at the common connection point of the electrical grid that supplies the trams in the city of Craiova, Romania. For one week there has been performed the measuring of the current and voltage harmonics and of the harmonic distortion factors (HDF). There has been noticed the distortion of the current far beyond the admitted limits and the broad variation of the total harmonic distortion factor of the current. The causes have been determined and solutions for reducing the extent of current distortion have been recommended. The problem of the active filtering of the current is also discussed.","PeriodicalId":345557,"journal":{"name":"2008 International Symposium on Power Electronics, Electrical Drives, Automation and Motion","volume":"237 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":"123748489","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.2008.4581154
A. Câmpeanu, A. Ionescu, I. Vlad, S. Enache
In this paper one uses the theory developed by A.Campeanu (1995) to simulate the operation of induction machine in complex dynamic processes. On this basis one can determine in detail the transient behavior of induction machine and some of the factors which condition the operation. The results are useful in the design stage of induction machine which has to operate in prescribed complex dynamic regimes.
{"title":"Prediction through simulation of the optimal behavior of the induction machine in complex process","authors":"A. Câmpeanu, A. Ionescu, I. Vlad, S. Enache","doi":"10.1109/SPEEDHAM.2008.4581154","DOIUrl":"https://doi.org/10.1109/SPEEDHAM.2008.4581154","url":null,"abstract":"In this paper one uses the theory developed by A.Campeanu (1995) to simulate the operation of induction machine in complex dynamic processes. On this basis one can determine in detail the transient behavior of induction machine and some of the factors which condition the operation. The results are useful in the design stage of induction machine which has to operate in prescribed complex dynamic regimes.","PeriodicalId":345557,"journal":{"name":"2008 International Symposium on Power Electronics, Electrical Drives, Automation and Motion","volume":"23 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":"123749118","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.2008.4581210
T. Nagai, Shigeto Aramaki
The skill of robotic task has been studied in many research institutes. We have been researching the skill for the assembly of the consumer products. We has developed the original knowledge representation for robotic assembly task with the position and force control. We proposed the representation method of the skill that a human has and the construction method of a knowledge base for robotic assembly task. In this paper, we analyzed the assembly task with the click action. And, we proposed the knowledge representation that checked the differential value of the sensor. As a result, the representation of the assembly task with the click action became possible. In addition, we programmed the proposed representation and confirmed the assembly work in an actual robot with the click action. Then, the effectiveness of the representation was confirmed.
{"title":"The representation method of robotic assembly task with click action","authors":"T. Nagai, Shigeto Aramaki","doi":"10.1109/SPEEDHAM.2008.4581210","DOIUrl":"https://doi.org/10.1109/SPEEDHAM.2008.4581210","url":null,"abstract":"The skill of robotic task has been studied in many research institutes. We have been researching the skill for the assembly of the consumer products. We has developed the original knowledge representation for robotic assembly task with the position and force control. We proposed the representation method of the skill that a human has and the construction method of a knowledge base for robotic assembly task. In this paper, we analyzed the assembly task with the click action. And, we proposed the knowledge representation that checked the differential value of the sensor. As a result, the representation of the assembly task with the click action became possible. In addition, we programmed the proposed representation and confirmed the assembly work in an actual robot with the click action. Then, the effectiveness of the representation was confirmed.","PeriodicalId":345557,"journal":{"name":"2008 International Symposium on Power Electronics, Electrical Drives, Automation and Motion","volume":"20 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":"125177549","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.2008.4581200
M. Benhaddadi, G. Olivier
This paper illustrates the induced enormous energy saving potential, permitted by using adjustable speed drives and high-efficiency motors. Furthermore, the most important barriers to larger high-efficiency motors & adjustable speed drives utilization are identified, and some incentives recommendations are given to overcome identified impediments. The authors consider that there is a strong case not only for putting in place obligatory level standards for the energy efficiency of electric motors and drives, but enhance incentives policies for larger market penetration.
{"title":"Barriers and incentives policies to high-efficiency motors and drives market penetration","authors":"M. Benhaddadi, G. Olivier","doi":"10.1109/SPEEDHAM.2008.4581200","DOIUrl":"https://doi.org/10.1109/SPEEDHAM.2008.4581200","url":null,"abstract":"This paper illustrates the induced enormous energy saving potential, permitted by using adjustable speed drives and high-efficiency motors. Furthermore, the most important barriers to larger high-efficiency motors & adjustable speed drives utilization are identified, and some incentives recommendations are given to overcome identified impediments. The authors consider that there is a strong case not only for putting in place obligatory level standards for the energy efficiency of electric motors and drives, but enhance incentives policies for larger market penetration.","PeriodicalId":345557,"journal":{"name":"2008 International Symposium on Power Electronics, Electrical Drives, Automation and Motion","volume":"23 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":"125196953","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.2008.4581161
V. Chrisanov
The paper reports the computer simulation of transients during the induction motor (IM) start up at symmetrical and asymmetrical (unbalanced) voltage impressed. The investigation begins with clearing up the physical reason of the IM start-up transient origin and then proceeds to theoretical analysis of transient suppression methods. To suppress transient to a minimum magnitude the strategy of separate and sequential switching on the stator windings at favorable time instants to three phase mains is considered. Three possible schemes of the IM asymmetrical switching on are described, and then the mathematical modeling are carried out with help of differential equations in Cauchy form. Results of computer calculation are plotted with 3D sets of the transient currents and torques of the IM in terms of time and different phase angles of the voltage impressed.
{"title":"The induction motor start up with transient suppression","authors":"V. Chrisanov","doi":"10.1109/SPEEDHAM.2008.4581161","DOIUrl":"https://doi.org/10.1109/SPEEDHAM.2008.4581161","url":null,"abstract":"The paper reports the computer simulation of transients during the induction motor (IM) start up at symmetrical and asymmetrical (unbalanced) voltage impressed. The investigation begins with clearing up the physical reason of the IM start-up transient origin and then proceeds to theoretical analysis of transient suppression methods. To suppress transient to a minimum magnitude the strategy of separate and sequential switching on the stator windings at favorable time instants to three phase mains is considered. Three possible schemes of the IM asymmetrical switching on are described, and then the mathematical modeling are carried out with help of differential equations in Cauchy form. Results of computer calculation are plotted with 3D sets of the transient currents and torques of the IM in terms of time and different phase angles of the voltage impressed.","PeriodicalId":345557,"journal":{"name":"2008 International Symposium on Power Electronics, Electrical Drives, Automation and Motion","volume":"28 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":"129217220","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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