Pub Date : 2014-11-01DOI: 10.1109/CISTEM.2014.7077049
N. Hamrouni, Amel Ghobber, A. Rabhi, A. El Hajjaji
In this work we are interested in modeling and control of a wind system formed by a turbine, a driving shaft and a double fed induction machine. We are used the multi model method to overcome the non linearity of the system. Hence two techniques of command were developed. They are the feedback command state and the standard command using the quadratic functions of Lyapunov and the LMI approach. The simulation shows the control performances and dynamic behavior of the wind system. The standard command permits the stability of the system and attenuation of the external disturbances caused by the variation of the wind speed.
{"title":"Modeling and robust control of a wind Generator","authors":"N. Hamrouni, Amel Ghobber, A. Rabhi, A. El Hajjaji","doi":"10.1109/CISTEM.2014.7077049","DOIUrl":"https://doi.org/10.1109/CISTEM.2014.7077049","url":null,"abstract":"In this work we are interested in modeling and control of a wind system formed by a turbine, a driving shaft and a double fed induction machine. We are used the multi model method to overcome the non linearity of the system. Hence two techniques of command were developed. They are the feedback command state and the standard command using the quadratic functions of Lyapunov and the LMI approach. The simulation shows the control performances and dynamic behavior of the wind system. The standard command permits the stability of the system and attenuation of the external disturbances caused by the variation of the wind speed.","PeriodicalId":115632,"journal":{"name":"2014 International Conference on Electrical Sciences and Technologies in Maghreb (CISTEM)","volume":"212 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":"121228403","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.2014.7076966
Besseghier Mokhtar, A. B. Djebbar, D. Iyad, Taleb-Ahmed Abdelmalik
The greatest threat to the OFDM system is the loss of orthogonality between subcarriers due to the carrier frequency offset (CFO) which results in significant performance degradation. In addition to this last problem was the effect of propagation over multipath fading channel. Hence, both the channel and the CFO need to be estimated and corrected at the receiver for subsequent symbol detection. A new joint semi-blind CFO and channel estimation methods for OFDM systems based on maximum-likelihood (ML) is investigated in this paper. The proposed algorithm is based on virtual subcarriers (VSCs) and on a new design of pilot patterns in OFDM blocks. The simulation results are given to verify the validity of the proposed methods.
{"title":"Joint semi-blind estimation of CFO and channel for OFDM system","authors":"Besseghier Mokhtar, A. B. Djebbar, D. Iyad, Taleb-Ahmed Abdelmalik","doi":"10.1109/CISTEM.2014.7076966","DOIUrl":"https://doi.org/10.1109/CISTEM.2014.7076966","url":null,"abstract":"The greatest threat to the OFDM system is the loss of orthogonality between subcarriers due to the carrier frequency offset (CFO) which results in significant performance degradation. In addition to this last problem was the effect of propagation over multipath fading channel. Hence, both the channel and the CFO need to be estimated and corrected at the receiver for subsequent symbol detection. A new joint semi-blind CFO and channel estimation methods for OFDM systems based on maximum-likelihood (ML) is investigated in this paper. The proposed algorithm is based on virtual subcarriers (VSCs) and on a new design of pilot patterns in OFDM blocks. The simulation results are given to verify the validity of the proposed methods.","PeriodicalId":115632,"journal":{"name":"2014 International Conference on Electrical Sciences and Technologies in Maghreb (CISTEM)","volume":"33 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":"124040432","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.2014.7077000
M. Belaid, M. Tlig, J. Ben Hadj Slama
This paper deals a correlation of ElectroMagnetic Interference (EMI) evolution with the switching performance of power RF LDMOS (Radio Frequency Lateral Diffused Metal-Oxide-Semiconductor) devices applied to a series chopper. In addition their influences on the dynamic parameters are studied after various accelerated ageing tests (thermal and electrical). The response of these parameters and the switching waveform are described. The findings of experimental results are presented and discussed. Measurements show that important variations are obtained on the devices rise time. After ageing tests, the charge trapping in the gate oxide causes the modifications in the Miller capacity level and width result in an increase of the rise time and decreased the fall time, consequently an increase of the switching slosses.
本文研究了应用于串联斩波器的功率射频LDMOS (Radio Frequency Lateral diffusion metal - oxide semiconductor，射频横向扩散金属氧化物半导体)器件的电磁干扰演化与开关性能的关系。此外，通过各种加速老化试验(热老化和电老化)研究了它们对动态参数的影响。描述了这些参数的响应和开关波形。给出了实验结果并进行了讨论。测量结果表明，器件的上升时间发生了重要的变化。经过老化试验，栅极氧化物中的电荷捕获引起米勒容量水平和宽度的变化，导致上升时间增加，下降时间减少，从而导致开关损失增加。
{"title":"EMI and switching time evolution for power RF LDMOS in chopper application after accelerated tests","authors":"M. Belaid, M. Tlig, J. Ben Hadj Slama","doi":"10.1109/CISTEM.2014.7077000","DOIUrl":"https://doi.org/10.1109/CISTEM.2014.7077000","url":null,"abstract":"This paper deals a correlation of ElectroMagnetic Interference (EMI) evolution with the switching performance of power RF LDMOS (Radio Frequency Lateral Diffused Metal-Oxide-Semiconductor) devices applied to a series chopper. In addition their influences on the dynamic parameters are studied after various accelerated ageing tests (thermal and electrical). The response of these parameters and the switching waveform are described. The findings of experimental results are presented and discussed. Measurements show that important variations are obtained on the devices rise time. After ageing tests, the charge trapping in the gate oxide causes the modifications in the Miller capacity level and width result in an increase of the rise time and decreased the fall time, consequently an increase of the switching slosses.","PeriodicalId":115632,"journal":{"name":"2014 International Conference on Electrical Sciences and Technologies in Maghreb (CISTEM)","volume":"2 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":"114896024","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.2014.7077076
M. Slim, A. Abdelkrim, M. Benrejeb
Writing is the language visual representation by a graphic signs system conventionally adopted by a community of people. The study of the handwriting process is an exploration of the properties of the biological system producing it and the main involved factors namely the nerve impulses generation, the pen displacement on a writing surface, etc. People with disabilities or suffering from various neurological diseases are facing so many difficulties resulting from problems located at the muscle stimuli or signals of the brain and which arise at the stage of writing. The handwriting velocity of a same writer or different writers varies according to different criteria: age, attitude, mood, writing surface, etc. Therefore, it is interesting to reconstruct an experimental basis records taking, as primary reference, the writing speed for different writers which would allow studying the global system during handwriting process. This paper deals with a new approach of the handwriting system modeling based on the velocity criterion through the exploitation of artificial neural networks and specifically the sigmoid neural networks as well as the Bayesian regularization principles.
{"title":"Handwriting velocity modeling by sigmoid neural networks with Bayesian regularization","authors":"M. Slim, A. Abdelkrim, M. Benrejeb","doi":"10.1109/CISTEM.2014.7077076","DOIUrl":"https://doi.org/10.1109/CISTEM.2014.7077076","url":null,"abstract":"Writing is the language visual representation by a graphic signs system conventionally adopted by a community of people. The study of the handwriting process is an exploration of the properties of the biological system producing it and the main involved factors namely the nerve impulses generation, the pen displacement on a writing surface, etc. People with disabilities or suffering from various neurological diseases are facing so many difficulties resulting from problems located at the muscle stimuli or signals of the brain and which arise at the stage of writing. The handwriting velocity of a same writer or different writers varies according to different criteria: age, attitude, mood, writing surface, etc. Therefore, it is interesting to reconstruct an experimental basis records taking, as primary reference, the writing speed for different writers which would allow studying the global system during handwriting process. This paper deals with a new approach of the handwriting system modeling based on the velocity criterion through the exploitation of artificial neural networks and specifically the sigmoid neural networks as well as the Bayesian regularization principles.","PeriodicalId":115632,"journal":{"name":"2014 International Conference on Electrical Sciences and Technologies in Maghreb (CISTEM)","volume":"8 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":"117031486","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.2014.7077051
Walid Soulouh, H. Hihi, K. Faitah
In this paper, we develop a study concerning the distributed generation of electricity using wind power. We propose a mathematical modeling and a simulation in MATLAB/Simulink of a wind generator with variable speed. The system considered is composed of a DC machine emulating the turbine, a permanent magnet synchronous machine making the base of the generator, in addition to a PWM power converter.
{"title":"Modeling and controlling of a wind generator based on a permanent magnet synchronous machine","authors":"Walid Soulouh, H. Hihi, K. Faitah","doi":"10.1109/CISTEM.2014.7077051","DOIUrl":"https://doi.org/10.1109/CISTEM.2014.7077051","url":null,"abstract":"In this paper, we develop a study concerning the distributed generation of electricity using wind power. We propose a mathematical modeling and a simulation in MATLAB/Simulink of a wind generator with variable speed. The system considered is composed of a DC machine emulating the turbine, a permanent magnet synchronous machine making the base of the generator, in addition to a PWM power converter.","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":"132501377","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.2014.7077030
Khawla Ghribi, Sylvie Sevestre, Z. Guessoum, Javier Gil-Quijano, D. Malouche, A. Youssef
Several papers deal with the topic of multi-agent solutions for the energy management in complex energy systems. According to the time scale, we distinguish two kinds of management: a reactive management (short-term) and an anticipative management (long-term). The objective of this paper is to propose a survey of the different multi-agent approaches, we thus propose a classification of existing management approaches according to the level of the system at which the decisions are made. The physical deployment of services' steering shows that these services can be only of two types: independent and interdependent and gives hints about the adequate tools of management.
{"title":"A survey on multi-agent management approaches in the context of intelligent energy systems","authors":"Khawla Ghribi, Sylvie Sevestre, Z. Guessoum, Javier Gil-Quijano, D. Malouche, A. Youssef","doi":"10.1109/CISTEM.2014.7077030","DOIUrl":"https://doi.org/10.1109/CISTEM.2014.7077030","url":null,"abstract":"Several papers deal with the topic of multi-agent solutions for the energy management in complex energy systems. According to the time scale, we distinguish two kinds of management: a reactive management (short-term) and an anticipative management (long-term). The objective of this paper is to propose a survey of the different multi-agent approaches, we thus propose a classification of existing management approaches according to the level of the system at which the decisions are made. The physical deployment of services' steering shows that these services can be only of two types: independent and interdependent and gives hints about the adequate tools of management.","PeriodicalId":115632,"journal":{"name":"2014 International Conference on Electrical Sciences and Technologies in Maghreb (CISTEM)","volume":"94 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":"134505678","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.2014.7077066
O. Kouki, C. Mnasri, M. Gasmi
The robust iterative learning control is presented in this paper for the tracking control for linear systems with disturbances. An H infinity norm based on iterative learning control is used to analyze the system stability and to prove the convergence of the learning control rule. We proposed in this paper an initial robust control law applied to the plant then an iterative learning control is deduced which guaranteed the monotonic convergence of the system. The analysis and synthesis of this control law is based on the resolution of a convex optimization problem under constraints of LMI (Linear Matrix Inequalities).
{"title":"Robust iterative learning control of linear continuous time systems with disturbances","authors":"O. Kouki, C. Mnasri, M. Gasmi","doi":"10.1109/CISTEM.2014.7077066","DOIUrl":"https://doi.org/10.1109/CISTEM.2014.7077066","url":null,"abstract":"The robust iterative learning control is presented in this paper for the tracking control for linear systems with disturbances. An H infinity norm based on iterative learning control is used to analyze the system stability and to prove the convergence of the learning control rule. We proposed in this paper an initial robust control law applied to the plant then an iterative learning control is deduced which guaranteed the monotonic convergence of the system. The analysis and synthesis of this control law is based on the resolution of a convex optimization problem under constraints of LMI (Linear Matrix Inequalities).","PeriodicalId":115632,"journal":{"name":"2014 International Conference on Electrical Sciences and Technologies in Maghreb (CISTEM)","volume":"264 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":"133848914","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.2014.7077060
M. Hachicha, M. Ghariani, R. Neji
Vector controlled drives involve a prior knowledge of the spatial orientation as well as the magnitude of the magnetic flux in the IM rotor or stator. In this context estimators or observers can be used, depending on the required robustness and accuracy as well as the sensitivity next to parameters variation. Thus, the performance of an IM drive remains dependent on the rapidity and the accuracy of the submitted parameters values. In this paper an IM finite element model based observer “FEMO” is developed. The IM finite element model “IMFEM” was designed using a two dimensional Finite Element Method “FEM” in order to identify the stator inductance, the rotor time constant and the magnetic dispersion coefficient. Field trials was undertaken to validate the IMFEM and performance of the FEMO is evaluated.
{"title":"Induction machine finite element model for field-oriented control in Electric vehicle power train","authors":"M. Hachicha, M. Ghariani, R. Neji","doi":"10.1109/CISTEM.2014.7077060","DOIUrl":"https://doi.org/10.1109/CISTEM.2014.7077060","url":null,"abstract":"Vector controlled drives involve a prior knowledge of the spatial orientation as well as the magnitude of the magnetic flux in the IM rotor or stator. In this context estimators or observers can be used, depending on the required robustness and accuracy as well as the sensitivity next to parameters variation. Thus, the performance of an IM drive remains dependent on the rapidity and the accuracy of the submitted parameters values. In this paper an IM finite element model based observer “FEMO” is developed. The IM finite element model “IMFEM” was designed using a two dimensional Finite Element Method “FEM” in order to identify the stator inductance, the rotor time constant and the magnetic dispersion coefficient. Field trials was undertaken to validate the IMFEM and performance of the FEMO is evaluated.","PeriodicalId":115632,"journal":{"name":"2014 International Conference on Electrical Sciences and Technologies in Maghreb (CISTEM)","volume":"103 39","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113945924","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.2014.7076922
J. Ben Salem, M. Lakhoua, L. El Amraoui
In this paper, the general context of our bibliographic research in the field of mechatronic systems modeling is presented. Thus, we first present a brief introduction to mechatronic systems and different areas related to these systems, then a presentation of some methods of analysis and design applied to mechatronic systems. Finally, a presentation of modeling tools and studying systems in order to achieve a systems analysis methodology for mechatronic systems.
{"title":"On the analysis and the design of mechatronic systems","authors":"J. Ben Salem, M. Lakhoua, L. El Amraoui","doi":"10.1109/CISTEM.2014.7076922","DOIUrl":"https://doi.org/10.1109/CISTEM.2014.7076922","url":null,"abstract":"In this paper, the general context of our bibliographic research in the field of mechatronic systems modeling is presented. Thus, we first present a brief introduction to mechatronic systems and different areas related to these systems, then a presentation of some methods of analysis and design applied to mechatronic systems. Finally, a presentation of modeling tools and studying systems in order to achieve a systems analysis methodology for mechatronic systems.","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":"127890621","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.2014.7077027
H. Turki, Khadija Ben Kilani, M. Elleuch
The aim of this work is to explore the static conduct of an islanded micorgrid. A technical economic study is performed. Many parameters and aspects such as renewable resources availability, fuel price, microgrid components, and dispatch strategies are examined to see their effect on microgrid operation and cost effectiveness. The study is performed on Desertores Island microgrid example. A comparison is made also with Tunisia using the same system but with Tunisian climate data and fuel price. HOMER (Hybrid Optimization of Multiple Energy Resources) software is very useful to perform such study.
这项工作的目的是探索一个孤岛微电网的静态导电性。进行了技术经济研究。许多参数和方面，如可再生资源的可用性，燃料价格，微电网组件和调度策略进行检查，看看他们对微电网运行和成本效益的影响。该研究以Desertores岛微电网为例进行。我们也用突尼斯的气候数据和燃料价格，用同样的系统与突尼斯进行了比较。HOMER (Hybrid Optimization of Multiple Energy Resources)软件是进行此类研究的有效工具。
{"title":"Static analysis of islanded micro grids: Focus on renewable fraction and cost of energy","authors":"H. Turki, Khadija Ben Kilani, M. Elleuch","doi":"10.1109/CISTEM.2014.7077027","DOIUrl":"https://doi.org/10.1109/CISTEM.2014.7077027","url":null,"abstract":"The aim of this work is to explore the static conduct of an islanded micorgrid. A technical economic study is performed. Many parameters and aspects such as renewable resources availability, fuel price, microgrid components, and dispatch strategies are examined to see their effect on microgrid operation and cost effectiveness. The study is performed on Desertores Island microgrid example. A comparison is made also with Tunisia using the same system but with Tunisian climate data and fuel price. HOMER (Hybrid Optimization of Multiple Energy Resources) software is very useful to perform such study.","PeriodicalId":115632,"journal":{"name":"2014 International Conference on Electrical Sciences and Technologies in Maghreb (CISTEM)","volume":"105 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":"128600344","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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