Pub Date : 2014-11-05DOI: 10.1109/CISTEM.2014.7077072
H. Maamri, I. Bahri, N. Derbel
This paper deals with an adaptive hysteresis controller for the Switched Reluctance Machine (SRM). The classical hysteresis controller provides a high bandwidth, good robustness but it's characterized by a variable switching frequency. This latter causes the injection of high frequency harmonics into the system that can also cause mechanical vibration and acoustic noise. In this paper, adaptive hysteresis controller based on variable hysteresis band is proposed. This variable band is computed in real time to provide a fixed switching frequency. The performance of the classical and the proposed hysteresis controller has been evaluated. Simulations results and experimental tests are given and show the effectiveness of the proposed controller. The switching frequency is maintained constant and the torque ripples are reduced.
{"title":"Adaptive hysteresis controller for the Switched Reluctance Machines","authors":"H. Maamri, I. Bahri, N. Derbel","doi":"10.1109/CISTEM.2014.7077072","DOIUrl":"https://doi.org/10.1109/CISTEM.2014.7077072","url":null,"abstract":"This paper deals with an adaptive hysteresis controller for the Switched Reluctance Machine (SRM). The classical hysteresis controller provides a high bandwidth, good robustness but it's characterized by a variable switching frequency. This latter causes the injection of high frequency harmonics into the system that can also cause mechanical vibration and acoustic noise. In this paper, adaptive hysteresis controller based on variable hysteresis band is proposed. This variable band is computed in real time to provide a fixed switching frequency. The performance of the classical and the proposed hysteresis controller has been evaluated. Simulations results and experimental tests are given and show the effectiveness of the proposed controller. The switching frequency is maintained constant and the torque ripples are reduced.","PeriodicalId":115632,"journal":{"name":"2014 International Conference on Electrical Sciences and Technologies in Maghreb (CISTEM)","volume":"106 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121238434","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 : 2014-11-03DOI: 10.1109/CISTEM.2014.7076967
B. Douine, K. Berger, J. Lévêque
Knowledge of the law critical current density versus magnetic field, JC(B), of a superconducting material is very important to users. In this article are presented two methods of characterization to obtain experimentally the law JC (B). These two methods are commonly used for applications in electrical engineering. The electrical method is based on measuring the voltage and current of a superconducting sample. It has the advantage of simplicity in implementation, but the main drawback as the presence of the self magnetic field. This prevents the determination of the parameters of JC(B) for weak magnetic fields. The magnetic method using the cycle of magnetization has the advantage of making measurements without contact with the sample but has two drawbacks: it is based on a theoretical model in which JC is constant and the assumption of infinite length sample.
{"title":"Critical current density determination of superconducting material","authors":"B. Douine, K. Berger, J. Lévêque","doi":"10.1109/CISTEM.2014.7076967","DOIUrl":"https://doi.org/10.1109/CISTEM.2014.7076967","url":null,"abstract":"Knowledge of the law critical current density versus magnetic field, JC(B), of a superconducting material is very important to users. In this article are presented two methods of characterization to obtain experimentally the law JC (B). These two methods are commonly used for applications in electrical engineering. The electrical method is based on measuring the voltage and current of a superconducting sample. It has the advantage of simplicity in implementation, but the main drawback as the presence of the self magnetic field. This prevents the determination of the parameters of JC(B) for weak magnetic fields. The magnetic method using the cycle of magnetization has the advantage of making measurements without contact with the sample but has two drawbacks: it is based on a theoretical model in which JC is constant and the assumption of infinite length sample.","PeriodicalId":115632,"journal":{"name":"2014 International Conference on Electrical Sciences and Technologies in Maghreb (CISTEM)","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117281317","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 : 2014-11-01DOI: 10.1109/CISTEM.2014.7076981
A. Damdoum, I. Slama-Belkhodja, M. Debbou, M. Pietrzak-David
This paper proposes a reconfiguration scheme of a control strategy for a Doubly Fed Induction Machine based pump turbine system under balanced grid faults. The start-up and synchronization procedures are initially achieved before pump or turbine mode, with a different control at each of these three working zones. A control reconfiguration method is proposed when balanced grid faults occur during pumping mode. The reconfiguration is performed into two steps. Firstly, the control is switched from the pumping mode one to the control used for synchronization. The second step is to return to the pumping mode. The first step allows the pumping mode control parameters to be adapted to the faulty grid conditions. Study Simulations are carried out on a 4kW laboratory set-up to illustrate the effectiveness of the proposed approach.
{"title":"Control reconfiguration strategy for Doubly Fed Induction Machine pumped storage unit under balanced grid faults","authors":"A. Damdoum, I. Slama-Belkhodja, M. Debbou, M. Pietrzak-David","doi":"10.1109/CISTEM.2014.7076981","DOIUrl":"https://doi.org/10.1109/CISTEM.2014.7076981","url":null,"abstract":"This paper proposes a reconfiguration scheme of a control strategy for a Doubly Fed Induction Machine based pump turbine system under balanced grid faults. The start-up and synchronization procedures are initially achieved before pump or turbine mode, with a different control at each of these three working zones. A control reconfiguration method is proposed when balanced grid faults occur during pumping mode. The reconfiguration is performed into two steps. Firstly, the control is switched from the pumping mode one to the control used for synchronization. The second step is to return to the pumping mode. The first step allows the pumping mode control parameters to be adapted to the faulty grid conditions. Study Simulations are carried out on a 4kW laboratory set-up to illustrate the effectiveness of the proposed approach.","PeriodicalId":115632,"journal":{"name":"2014 International Conference on Electrical Sciences and Technologies in Maghreb (CISTEM)","volume":"434 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115604688","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 : 2014-11-01DOI: 10.1109/CISTEM.2014.7368727
M. Trabelsi, M. Boussak
This paper describes a remedial strategy against open-circuit fault occurring in the inverter switching devices of a sensorless induction motor drive. These applications are much more sensitive to inverter faults that the conventional sensored systems. Hence, if the fault is not quickly detected and compensated, it can leads to hard failure and to disconnecting the system. A way of maintaining its functionality is to introduce a fourth inverter pole, with the same topology and capabilities of the other conventional three poles. The fault tolerance is evaluated and verified using sensorless vector control of a three phase induction motor based on Luenberger observer (LO). The post-fault robustness and performance is the same as the normal operation because of the fast fault detection and reconfiguration. The output line-to-line voltages of the inverter are used for the FDI process. The results are presented and discussed to evaluate the Luenberger observer operating under considered faults.
{"title":"Sensorless speed control of VSI-FED induction motor drive under IGBT open-switch damage: Performances and fault tolerant analysis","authors":"M. Trabelsi, M. Boussak","doi":"10.1109/CISTEM.2014.7368727","DOIUrl":"https://doi.org/10.1109/CISTEM.2014.7368727","url":null,"abstract":"This paper describes a remedial strategy against open-circuit fault occurring in the inverter switching devices of a sensorless induction motor drive. These applications are much more sensitive to inverter faults that the conventional sensored systems. Hence, if the fault is not quickly detected and compensated, it can leads to hard failure and to disconnecting the system. A way of maintaining its functionality is to introduce a fourth inverter pole, with the same topology and capabilities of the other conventional three poles. The fault tolerance is evaluated and verified using sensorless vector control of a three phase induction motor based on Luenberger observer (LO). The post-fault robustness and performance is the same as the normal operation because of the fast fault detection and reconfiguration. The output line-to-line voltages of the inverter are used for the FDI process. The results are presented and discussed to evaluate the Luenberger observer operating under considered faults.","PeriodicalId":115632,"journal":{"name":"2014 International Conference on Electrical Sciences and Technologies in Maghreb (CISTEM)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123064728","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 : 2014-11-01DOI: 10.1109/CISTEM.2014.7077057
Z. Asradj, R. Alkama
In order to model the global solar radiation based on meteorological parameters for the Bejaia site, we established a database of more than 26,000 points obtained by recording every eight minutes of illumination and meteorological parameters (sunshine hours, ambient temperature, air pressure, relative humidity and rainfall). empirical models have been developed using several parameters and, recently, prognostic and prediction models based on artificial intelligence techniques such as neural networks. The daily averages were used to test NN models with 5 parameters and the relationship with the coefficient of the highest correlation was chosen. Two thirds were used to establish the model and one third for validation. We compared its performance with four models in the literature (Angstrom-Prescott, Bahel, Newland and Abdalla).
{"title":"Prediction of solar radiation in Bejaia city using neurnal network (MLP).","authors":"Z. Asradj, R. Alkama","doi":"10.1109/CISTEM.2014.7077057","DOIUrl":"https://doi.org/10.1109/CISTEM.2014.7077057","url":null,"abstract":"In order to model the global solar radiation based on meteorological parameters for the Bejaia site, we established a database of more than 26,000 points obtained by recording every eight minutes of illumination and meteorological parameters (sunshine hours, ambient temperature, air pressure, relative humidity and rainfall). empirical models have been developed using several parameters and, recently, prognostic and prediction models based on artificial intelligence techniques such as neural networks. The daily averages were used to test NN models with 5 parameters and the relationship with the coefficient of the highest correlation was chosen. Two thirds were used to establish the model and one third for validation. We compared its performance with four models in the literature (Angstrom-Prescott, Bahel, Newland and Abdalla).","PeriodicalId":115632,"journal":{"name":"2014 International Conference on Electrical Sciences and Technologies in Maghreb (CISTEM)","volume":"180 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127133505","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 : 2014-11-01DOI: 10.1109/CISTEM.2014.7077018
Y. A. Gherbi, Hamid Bouzeboudja, F. Lakdja, F. Z. Gherbi, D. Ould-Abdeslam
The goal of the economic load dispatch is to determine the optimal power outputs of on-line generating units in order to meet the load demand subject to satisfying various operational constraints over finite dispatch periods. Finding optimal solutions to these problems requires efficient optimization algorithms. Firefly algorithm and bat algorithm are the most recent methods and they already proved there efficient, but their aspect random present a disadvantage which is the instability of the results, indeed they depend on the random initial values generated by the program. To solve this problem, we tried to hybrid firefly algorithm and bat algorithm, and to test our new algorithm we applied it to a standard electric network of 5 buses with three buses generator and we compared the result obtained with those obtained by other methods.
{"title":"New approach for solving economic load dispatch problem","authors":"Y. A. Gherbi, Hamid Bouzeboudja, F. Lakdja, F. Z. Gherbi, D. Ould-Abdeslam","doi":"10.1109/CISTEM.2014.7077018","DOIUrl":"https://doi.org/10.1109/CISTEM.2014.7077018","url":null,"abstract":"The goal of the economic load dispatch is to determine the optimal power outputs of on-line generating units in order to meet the load demand subject to satisfying various operational constraints over finite dispatch periods. Finding optimal solutions to these problems requires efficient optimization algorithms. Firefly algorithm and bat algorithm are the most recent methods and they already proved there efficient, but their aspect random present a disadvantage which is the instability of the results, indeed they depend on the random initial values generated by the program. To solve this problem, we tried to hybrid firefly algorithm and bat algorithm, and to test our new algorithm we applied it to a standard electric network of 5 buses with three buses generator and we compared the result obtained with those obtained by other methods.","PeriodicalId":115632,"journal":{"name":"2014 International Conference on Electrical Sciences and Technologies in Maghreb (CISTEM)","volume":"211 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123277573","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 : 2014-11-01DOI: 10.1109/CISTEM.2014.7076924
Wassim Mansour, K. Jelassi
In this work we aim to present a flexible software solution to control intelligent multi-agent manufacturing systems “FMCC”. Flexibility is necessary for such solutions since it gives possibility to adept them for different manufacturing systems. The use of OPC protocol has allowed developers to produce software solutions usable with different manufacturing systems by simple initial configuration. Presented software through this paper allows users to edit different manufacturing sequences for each product with multitude possible combinations (flexibility in manufacturing operations order, maximum waiting time for given product, minimum waiting time between two production operations ...). Main elements of the developed software are the use of OPC protocol, RFID technology and multi-threading.
{"title":"Flexible Software solution for intelligent multi-agent manufacturing systems","authors":"Wassim Mansour, K. Jelassi","doi":"10.1109/CISTEM.2014.7076924","DOIUrl":"https://doi.org/10.1109/CISTEM.2014.7076924","url":null,"abstract":"In this work we aim to present a flexible software solution to control intelligent multi-agent manufacturing systems “FMCC”. Flexibility is necessary for such solutions since it gives possibility to adept them for different manufacturing systems. The use of OPC protocol has allowed developers to produce software solutions usable with different manufacturing systems by simple initial configuration. Presented software through this paper allows users to edit different manufacturing sequences for each product with multitude possible combinations (flexibility in manufacturing operations order, maximum waiting time for given product, minimum waiting time between two production operations ...). Main elements of the developed software are the use of OPC protocol, RFID technology and multi-threading.","PeriodicalId":115632,"journal":{"name":"2014 International Conference on Electrical Sciences and Technologies in Maghreb (CISTEM)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116563349","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 : 2014-11-01DOI: 10.1109/CISTEM.2014.7076993
W. Labiedh, H. Shall, J. Ben Hadj Slama, Z. Riah, M. Kadi
In this paper, we present two different inverse methods using the electromagnetic near field, as input data, to determine a model of equivalent radiating sources for electronic components and systems. The first method is based on genetic algorithms, whereas the second one is based on matrix calculation. The implementation of the two methods is applied to radiation of a coil. The analysis of the results has given a comparative between the two methods.
{"title":"Comparative study of two inverse methods based on near-field technique","authors":"W. Labiedh, H. Shall, J. Ben Hadj Slama, Z. Riah, M. Kadi","doi":"10.1109/CISTEM.2014.7076993","DOIUrl":"https://doi.org/10.1109/CISTEM.2014.7076993","url":null,"abstract":"In this paper, we present two different inverse methods using the electromagnetic near field, as input data, to determine a model of equivalent radiating sources for electronic components and systems. The first method is based on genetic algorithms, whereas the second one is based on matrix calculation. The implementation of the two methods is applied to radiation of a coil. The analysis of the results has given a comparative between the two methods.","PeriodicalId":115632,"journal":{"name":"2014 International Conference on Electrical Sciences and Technologies in Maghreb (CISTEM)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128429083","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 : 2014-11-01DOI: 10.1109/CISTEM.2014.7077008
Essaieh Mouna, J. Kamel
The variation of stator resistance due to changes in temperature or frequency deteriorates the performance of DTC controller particularly when the motor is operated at low speed. It introduces errors in the estimated flux linkage and the electromagnetic torque.
{"title":"Analysis and correction of the stator resistance variation based on the fuzzy logic estimator","authors":"Essaieh Mouna, J. Kamel","doi":"10.1109/CISTEM.2014.7077008","DOIUrl":"https://doi.org/10.1109/CISTEM.2014.7077008","url":null,"abstract":"The variation of stator resistance due to changes in temperature or frequency deteriorates the performance of DTC controller particularly when the motor is operated at low speed. It introduces errors in the estimated flux linkage and the electromagnetic torque.","PeriodicalId":115632,"journal":{"name":"2014 International Conference on Electrical Sciences and Technologies in Maghreb (CISTEM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129349518","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 : 2014-11-01DOI: 10.1109/CISTEM.2014.7349356
Rebeh Mabrouki, B. Khaddoumi, M. Sayadi
The rapid and disorganized electrical activity that characterizes Atrial Fibrillation generates an increases in both variability and complexity of RR intervals series. Based on these characteristics which are variability and complexity, we have developed an algorithm combining two nonlinear statistical techniques in order to detect the presence of Atrial Fibrillation. These two nonlinear statistical methods are: Poincare plot which quantifies the variability of RR intervals series and the sample entropy which characterizes the complexity of the RR intervals series. We used the MIT-BIH Atrial Fibrillation database to train the algorithm and then we tested it on the MIT-BIH Arrhythmia database. Using thresholds and segment length determined by Receiver Operating Characteristic (ROC) curves we achieved Se=97.01% and Sp=93.92% for the MIT-BIH Atrial Fibrillation database and we obtained Se=98.67% and Sp=86.14% for the MIT-BIH Arrhythmia database. The proposed algorithm is compared to another method, namely “Dash's” detection method [1]. For the Dash's method, we achieved Se=97.09% and Sp=90.98% for the MIT-BIH Atrial Fibrillation database and we obtained Se=96% and Sp=82.31% for the MIT-BIH Arrhythmia database.
{"title":"Nonlinear statistical methods for atrial fibrillation detection on electrocardiogram","authors":"Rebeh Mabrouki, B. Khaddoumi, M. Sayadi","doi":"10.1109/CISTEM.2014.7349356","DOIUrl":"https://doi.org/10.1109/CISTEM.2014.7349356","url":null,"abstract":"The rapid and disorganized electrical activity that characterizes Atrial Fibrillation generates an increases in both variability and complexity of RR intervals series. Based on these characteristics which are variability and complexity, we have developed an algorithm combining two nonlinear statistical techniques in order to detect the presence of Atrial Fibrillation. These two nonlinear statistical methods are: Poincare plot which quantifies the variability of RR intervals series and the sample entropy which characterizes the complexity of the RR intervals series. We used the MIT-BIH Atrial Fibrillation database to train the algorithm and then we tested it on the MIT-BIH Arrhythmia database. Using thresholds and segment length determined by Receiver Operating Characteristic (ROC) curves we achieved Se=97.01% and Sp=93.92% for the MIT-BIH Atrial Fibrillation database and we obtained Se=98.67% and Sp=86.14% for the MIT-BIH Arrhythmia database. The proposed algorithm is compared to another method, namely “Dash's” detection method [1]. For the Dash's method, we achieved Se=97.09% and Sp=90.98% for the MIT-BIH Atrial Fibrillation database and we obtained Se=96% and Sp=82.31% for the MIT-BIH Arrhythmia database.","PeriodicalId":115632,"journal":{"name":"2014 International Conference on Electrical Sciences and Technologies in Maghreb (CISTEM)","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124576552","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：