Pub Date : 2014-12-11DOI: 10.1109/EPEPEMC.2014.6980508
P. Stumpf, R. K. Járdán, I. Nagy, Z. Varga
Wind Energy Conversion Systems (WECS) are penetrating into Microgrids as they fit well to the concept of Distributed Generation. The variable speed Doubly Fed Induction Generators (DFIG) are most frequently used. Changing the speed (DFIG) according to the aerodynamic law, maximum wind power can be harvested. The paper investigates the way of speed change by rotor voltage in steady-state and in transient. Steady state characteristics and simulation results for dynamic behavior are included.
{"title":"Wind energy penetration into distributed generation and its static and dynamic features","authors":"P. Stumpf, R. K. Járdán, I. Nagy, Z. Varga","doi":"10.1109/EPEPEMC.2014.6980508","DOIUrl":"https://doi.org/10.1109/EPEPEMC.2014.6980508","url":null,"abstract":"Wind Energy Conversion Systems (WECS) are penetrating into Microgrids as they fit well to the concept of Distributed Generation. The variable speed Doubly Fed Induction Generators (DFIG) are most frequently used. Changing the speed (DFIG) according to the aerodynamic law, maximum wind power can be harvested. The paper investigates the way of speed change by rotor voltage in steady-state and in transient. Steady state characteristics and simulation results for dynamic behavior are included.","PeriodicalId":325670,"journal":{"name":"2014 16th International Power Electronics and Motion Control Conference and Exposition","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124969022","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 : 2014-12-11DOI: 10.1109/EPEPEMC.2014.6980638
S. Bayhan, H. Abu-Rub
This paper presents a comparison study and analysis of two sensorless methods for the detection of rotor position of the standalone doubly fed induction generator (DFIG). Although, there are available several sensorless control methods for DFIG, the paper deals with two popular methods. These methods are stator flux based model reference adaptive system (MRAS) observer and rotor position phase-locked-loop (PLL) method. The discussed sensorless control methods are designed and simulated in Matlab&Simulink. The performances of both sensorless control methods are analyzed with respect to standalone operation. Compared study of their performances under startup process and at different speed conditions is also presented.
{"title":"Performance comparison of two sensorless control methods for standalone doubly-fed induction generator","authors":"S. Bayhan, H. Abu-Rub","doi":"10.1109/EPEPEMC.2014.6980638","DOIUrl":"https://doi.org/10.1109/EPEPEMC.2014.6980638","url":null,"abstract":"This paper presents a comparison study and analysis of two sensorless methods for the detection of rotor position of the standalone doubly fed induction generator (DFIG). Although, there are available several sensorless control methods for DFIG, the paper deals with two popular methods. These methods are stator flux based model reference adaptive system (MRAS) observer and rotor position phase-locked-loop (PLL) method. The discussed sensorless control methods are designed and simulated in Matlab&Simulink. The performances of both sensorless control methods are analyzed with respect to standalone operation. Compared study of their performances under startup process and at different speed conditions is also presented.","PeriodicalId":325670,"journal":{"name":"2014 16th International Power Electronics and Motion Control Conference and Exposition","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131375817","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 : 2014-12-11DOI: 10.1109/EPEPEMC.2014.6980618
M. Gwóźdź
A subject discussed in the article is the special purpose power electronics converter that fundamental task is generate the output current being precisely matched in the reference signal. The study presents the first stage of work on the layout of this type of converter. The main expected application area of the generator is ATE (Automated Test Equipment). The article presents the general concept of the generator and selected results of its simulation model investigations.
{"title":"A precision power electronics reference current generator","authors":"M. Gwóźdź","doi":"10.1109/EPEPEMC.2014.6980618","DOIUrl":"https://doi.org/10.1109/EPEPEMC.2014.6980618","url":null,"abstract":"A subject discussed in the article is the special purpose power electronics converter that fundamental task is generate the output current being precisely matched in the reference signal. The study presents the first stage of work on the layout of this type of converter. The main expected application area of the generator is ATE (Automated Test Equipment). The article presents the general concept of the generator and selected results of its simulation model investigations.","PeriodicalId":325670,"journal":{"name":"2014 16th International Power Electronics and Motion Control Conference and Exposition","volume":"82 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126249589","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 : 2014-12-11DOI: 10.1109/EPEPEMC.2014.6980611
Y. Soufi, K. Bouallegue, A. Boukadoum, T. Bahi
Due to its simple structure, compactness, efficiency and high torque density and ease of maintenance, the permanent magnet synchronous motor (PMSM) is particularly used in high-performance drive systems. This paper presents PI control of PMSM fed by a direct AC/AC matrix converter. We aim to obtain sinusoidal waveforms of currents in the output of the considered converter with the best static and dynamic performances of the PMSM. The obtained simulation results of the proposed control show good performances and high efficiency.
{"title":"PI control of permanent magnet synchronous motor fed by a matrix converter","authors":"Y. Soufi, K. Bouallegue, A. Boukadoum, T. Bahi","doi":"10.1109/EPEPEMC.2014.6980611","DOIUrl":"https://doi.org/10.1109/EPEPEMC.2014.6980611","url":null,"abstract":"Due to its simple structure, compactness, efficiency and high torque density and ease of maintenance, the permanent magnet synchronous motor (PMSM) is particularly used in high-performance drive systems. This paper presents PI control of PMSM fed by a direct AC/AC matrix converter. We aim to obtain sinusoidal waveforms of currents in the output of the considered converter with the best static and dynamic performances of the PMSM. The obtained simulation results of the proposed control show good performances and high efficiency.","PeriodicalId":325670,"journal":{"name":"2014 16th International Power Electronics and Motion Control Conference and Exposition","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126273841","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 : 2014-12-11DOI: 10.1109/EPEPEMC.2014.6980721
N. Težak, Mladen Puskaric, N. Čobanov
High performance control system, necessary to implement advanced concept for dominantly soft-switching based IGBT converter for traction applications, auxiliary power supply for light rail vehicles, is described with more detailed insight in some specific control solutions. Those control solutions, implemented by very compact hardware, based on DSP-FPGA digital core module, and its analogue module counterpart, enabled accomplishment of enhanced dynamic characteristics of the converter, as well as improvements with respect to the converter's power density, as well as the achieved reduction of size and mass of the converter.
{"title":"Advanced control system for soft-switching IGBT converter for traction applications","authors":"N. Težak, Mladen Puskaric, N. Čobanov","doi":"10.1109/EPEPEMC.2014.6980721","DOIUrl":"https://doi.org/10.1109/EPEPEMC.2014.6980721","url":null,"abstract":"High performance control system, necessary to implement advanced concept for dominantly soft-switching based IGBT converter for traction applications, auxiliary power supply for light rail vehicles, is described with more detailed insight in some specific control solutions. Those control solutions, implemented by very compact hardware, based on DSP-FPGA digital core module, and its analogue module counterpart, enabled accomplishment of enhanced dynamic characteristics of the converter, as well as improvements with respect to the converter's power density, as well as the achieved reduction of size and mass of the converter.","PeriodicalId":325670,"journal":{"name":"2014 16th International Power Electronics and Motion Control Conference and Exposition","volume":"327 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132460901","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 : 2014-12-11DOI: 10.1109/EPEPEMC.2014.6980510
A. Guettaf, F. Benchabane, M. Bahri, O. Bennis
Switched reluctance motor drives are increasingly used in high-performance motion control applications where smooth torque is one of the main requirements. However, in wind turbines, the presence of the air gap flux harmonics gives rise to undesirable torque pulsation. These torque pulsations cause performance deterioration in high-performance drive applications. Conventional methods for torque linearization and decoupling we used in previous works are briefly reviewed such as non-linear mode with current control by hysteresis based techniques. In this work we introduce fuzzy-logic technique to solve this problem and proof its high efficiency in such applications. Speed control is processed using a PI controller and a solution based on the use of fuzzy adaptive systems is then described.
{"title":"Reduction of periodic speed ripples in switched reluctance motor using fuzzy logic control","authors":"A. Guettaf, F. Benchabane, M. Bahri, O. Bennis","doi":"10.1109/EPEPEMC.2014.6980510","DOIUrl":"https://doi.org/10.1109/EPEPEMC.2014.6980510","url":null,"abstract":"Switched reluctance motor drives are increasingly used in high-performance motion control applications where smooth torque is one of the main requirements. However, in wind turbines, the presence of the air gap flux harmonics gives rise to undesirable torque pulsation. These torque pulsations cause performance deterioration in high-performance drive applications. Conventional methods for torque linearization and decoupling we used in previous works are briefly reviewed such as non-linear mode with current control by hysteresis based techniques. In this work we introduce fuzzy-logic technique to solve this problem and proof its high efficiency in such applications. Speed control is processed using a PI controller and a solution based on the use of fuzzy adaptive systems is then described.","PeriodicalId":325670,"journal":{"name":"2014 16th International Power Electronics and Motion Control Conference and Exposition","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130643656","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 : 2014-12-11DOI: 10.1109/EPEPEMC.2014.6980540
A. H. Dida, M. Bourahla, H. Ertan, M. Benghanem
The most industrial applications use the variation of the torque, speed and/or position in process, for which extremely severe specifications are needed. In the field of the drive of the electric machines, the elimination of the mechanical speed sensor can present an economic interest and improve safety of operation. One thus tries to make fulfill the speed measurement by implementing in a Digital signal processor (DSP) an algorithm of speed estimation using the current and voltage acquisition. Those methods become realizable on DSP of low costs. The goal of this work is to design, develop and implement of sensorless speed digital control of an electric motorization. The position and the mechanical speed of motor are calculated according to: observed rotor flux and the slip pulsation. The algorithm is implemented in DSPic30f of Microchip.
{"title":"Design, development and implementation of sensorless digital control of an electric motorization","authors":"A. H. Dida, M. Bourahla, H. Ertan, M. Benghanem","doi":"10.1109/EPEPEMC.2014.6980540","DOIUrl":"https://doi.org/10.1109/EPEPEMC.2014.6980540","url":null,"abstract":"The most industrial applications use the variation of the torque, speed and/or position in process, for which extremely severe specifications are needed. In the field of the drive of the electric machines, the elimination of the mechanical speed sensor can present an economic interest and improve safety of operation. One thus tries to make fulfill the speed measurement by implementing in a Digital signal processor (DSP) an algorithm of speed estimation using the current and voltage acquisition. Those methods become realizable on DSP of low costs. The goal of this work is to design, develop and implement of sensorless speed digital control of an electric motorization. The position and the mechanical speed of motor are calculated according to: observed rotor flux and the slip pulsation. The algorithm is implemented in DSPic30f of Microchip.","PeriodicalId":325670,"journal":{"name":"2014 16th International Power Electronics and Motion Control Conference and Exposition","volume":"102 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133345593","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 : 2014-12-11DOI: 10.1109/EPEPEMC.2014.6980610
Yuki Hikichi, Y. Nakashima, Y. Nakanishi, Kohichi Tsusu, K. Minami
This paper presents a microwell array that can convert cell-non-adhesiveness of the culture surface to cell-adhesiveness. This microwell array is used to evaluate cellular differentiation behavior by converting cell culture surface. The alginate thin film is used as a material that inhibits adhesion of cells. First, the coating method of alginate gel was developed. It is formed on a cell culture surface by spin-coating of sodium alginate solution and dipping into calcium chloride (CaCl2) solution. Also, it can be removed by alginate lyase at arbitrary timing during cell culture. We demonstrated the effect of the thickness of the alginate thin film on cell adhesion. As a result, the alginate thin film completely inhibited the adhesion of myoblasts to the culture surface regardless of the thickness. Also, the experiment of myoblasts differentiation was carried out using fabricated microwell array. The myoblasts making up the spheroids spread out onto the culture surface and cells concurrently proceeded to fuse by adhering culture surface with many adjacent cells. The fused and spread myoblasts differentiated and formed myotube cells by 244h of culture. In addition, myoblasts cultured on the fabricated microwell array fused more effectively than cultured on the bare glass surface.
{"title":"Fabrication of a microwell array having convertible cell culture surface and observation of cellular behavior","authors":"Yuki Hikichi, Y. Nakashima, Y. Nakanishi, Kohichi Tsusu, K. Minami","doi":"10.1109/EPEPEMC.2014.6980610","DOIUrl":"https://doi.org/10.1109/EPEPEMC.2014.6980610","url":null,"abstract":"This paper presents a microwell array that can convert cell-non-adhesiveness of the culture surface to cell-adhesiveness. This microwell array is used to evaluate cellular differentiation behavior by converting cell culture surface. The alginate thin film is used as a material that inhibits adhesion of cells. First, the coating method of alginate gel was developed. It is formed on a cell culture surface by spin-coating of sodium alginate solution and dipping into calcium chloride (CaCl2) solution. Also, it can be removed by alginate lyase at arbitrary timing during cell culture. We demonstrated the effect of the thickness of the alginate thin film on cell adhesion. As a result, the alginate thin film completely inhibited the adhesion of myoblasts to the culture surface regardless of the thickness. Also, the experiment of myoblasts differentiation was carried out using fabricated microwell array. The myoblasts making up the spheroids spread out onto the culture surface and cells concurrently proceeded to fuse by adhering culture surface with many adjacent cells. The fused and spread myoblasts differentiated and formed myotube cells by 244h of culture. In addition, myoblasts cultured on the fabricated microwell array fused more effectively than cultured on the bare glass surface.","PeriodicalId":325670,"journal":{"name":"2014 16th International Power Electronics and Motion Control Conference and Exposition","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132361489","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 : 2014-12-11DOI: 10.1109/EPEPEMC.2014.6980682
A. Sikorski, R. Grodzki
In this article a new, predictive control method of the AC/DC converter is presented. The method is based on the Direct Power Control algorithm and current error vector minimization criteria. Key assumptions of the predictive DPC-3V algorithms are presented. The correctness of the analysis has been confirmed by laboratory results.
{"title":"Predictive control of the AC/DC converter","authors":"A. Sikorski, R. Grodzki","doi":"10.1109/EPEPEMC.2014.6980682","DOIUrl":"https://doi.org/10.1109/EPEPEMC.2014.6980682","url":null,"abstract":"In this article a new, predictive control method of the AC/DC converter is presented. The method is based on the Direct Power Control algorithm and current error vector minimization criteria. Key assumptions of the predictive DPC-3V algorithms are presented. The correctness of the analysis has been confirmed by laboratory results.","PeriodicalId":325670,"journal":{"name":"2014 16th International Power Electronics and Motion Control Conference and Exposition","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133119900","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 : 2014-12-11DOI: 10.1109/EPEPEMC.2014.6980559
M. Dal, Cevat Simsek, Mahmut Cagr Ceylan, L. Akcil
Characterization of a new designed Doubly Fed Induction Generator (DFIG) is presented by considering two basic operation modes off-grid without load and on-grid with load. Several issues relevant to the start-up procedure of DFIG and its synchronization with grid are considered. The regulations of the voltage induced on the stator winding, and of power flow into grid by adjusting the rotor current components through the back to back converters are presented. The normal operation of DFIG is examined by computer simulations and hardware implementations, several results obtained to explore the basic characteristic of DFIG are presented. The real experimental tests are performed using a hardware test setup with 500 kW, installed at the research laboratory of Istanbul Ulasim A.S. Company. The test setup provided through the National Wind Energy Systems Project (MILRES) is funded by TUBITAK (The Scientific and Technological Research Council of Turkey), on behalf of Ministry of Energy, Turkey.
{"title":"Characterisation of DFIG controlled by back to back coverters: Simulation and hardware implementation","authors":"M. Dal, Cevat Simsek, Mahmut Cagr Ceylan, L. Akcil","doi":"10.1109/EPEPEMC.2014.6980559","DOIUrl":"https://doi.org/10.1109/EPEPEMC.2014.6980559","url":null,"abstract":"Characterization of a new designed Doubly Fed Induction Generator (DFIG) is presented by considering two basic operation modes off-grid without load and on-grid with load. Several issues relevant to the start-up procedure of DFIG and its synchronization with grid are considered. The regulations of the voltage induced on the stator winding, and of power flow into grid by adjusting the rotor current components through the back to back converters are presented. The normal operation of DFIG is examined by computer simulations and hardware implementations, several results obtained to explore the basic characteristic of DFIG are presented. The real experimental tests are performed using a hardware test setup with 500 kW, installed at the research laboratory of Istanbul Ulasim A.S. Company. The test setup provided through the National Wind Energy Systems Project (MILRES) is funded by TUBITAK (The Scientific and Technological Research Council of Turkey), on behalf of Ministry of Energy, Turkey.","PeriodicalId":325670,"journal":{"name":"2014 16th International Power Electronics and Motion Control Conference and Exposition","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114913758","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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