Pub Date : 2013-11-01DOI: 10.1109/IEEEGCC.2013.6705849
D. Orser, N. Mohan
This paper presents a new ride-through approach for matrix converters in adjustable speed drives. The improvements consist of a new ride-through control strategy and the addition of three bi-directional switches to isolate the input filter capacitors. This strategy is shown to enable ride-through of multi-second faults by harvesting the inertia in the spinning mass of the motor and load. The control strategy is analyzed followed by simulations with real motor parameters. Through a review of power quality assessments, it is shown that these improvements allow matrix converter based adjustable speed drives to operate in the vast majority of real world fault situations.
{"title":"Utilizing inertial energy to extend ride-through for matrix converters in adjustable speed drives","authors":"D. Orser, N. Mohan","doi":"10.1109/IEEEGCC.2013.6705849","DOIUrl":"https://doi.org/10.1109/IEEEGCC.2013.6705849","url":null,"abstract":"This paper presents a new ride-through approach for matrix converters in adjustable speed drives. The improvements consist of a new ride-through control strategy and the addition of three bi-directional switches to isolate the input filter capacitors. This strategy is shown to enable ride-through of multi-second faults by harvesting the inertia in the spinning mass of the motor and load. The control strategy is analyzed followed by simulations with real motor parameters. Through a review of power quality assessments, it is shown that these improvements allow matrix converter based adjustable speed drives to operate in the vast majority of real world fault situations.","PeriodicalId":316751,"journal":{"name":"2013 7th IEEE GCC Conference and Exhibition (GCC)","volume":"711 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116124490","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 : 2013-11-01DOI: 10.1109/IEEEGCC.2013.6705786
O. Ellabban, H. Abu-Rub
Switched reluctance motor (SRM) is on the focus of many researchers and it is becoming a proper alternative to conventional motors, because of its unique advantages. This paper presents a review for different torque control techniques of the SRM.
{"title":"Torque control strategies for a high performance switched reluctance motor drive system","authors":"O. Ellabban, H. Abu-Rub","doi":"10.1109/IEEEGCC.2013.6705786","DOIUrl":"https://doi.org/10.1109/IEEEGCC.2013.6705786","url":null,"abstract":"Switched reluctance motor (SRM) is on the focus of many researchers and it is becoming a proper alternative to conventional motors, because of its unique advantages. This paper presents a review for different torque control techniques of the SRM.","PeriodicalId":316751,"journal":{"name":"2013 7th IEEE GCC Conference and Exhibition (GCC)","volume":"679 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121994286","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 : 2013-11-01DOI: 10.1109/IEEEGCC.2013.6705807
N. Mustafa, H. El-Sallabi, K. Qaraqe, E. Serpedin
Lack of coordination between cognitive radio system and primary users requires learning about RF propagation features in the environment as key input to adaptive system parameters. Channel gain cartography is to enable having RF propagation maps. The challenging task is how to predict (or estimate) the shadowing of the channel gain maps. In this paper, different 1-D interpolation algorithms are tested against a shadow fading series that exhibits decaying exponential correlation versus distance behaviour. The purpose of this paper is to investigate the validity ranges over which each interpolation algorithm works well to estimate the shadow fading. The tested validity ranges are correlation distance, standard deviation of shadow fading and data density level of measured data.
{"title":"Comparison of different 1-D interpolation algorithms for estimation of shadow fading","authors":"N. Mustafa, H. El-Sallabi, K. Qaraqe, E. Serpedin","doi":"10.1109/IEEEGCC.2013.6705807","DOIUrl":"https://doi.org/10.1109/IEEEGCC.2013.6705807","url":null,"abstract":"Lack of coordination between cognitive radio system and primary users requires learning about RF propagation features in the environment as key input to adaptive system parameters. Channel gain cartography is to enable having RF propagation maps. The challenging task is how to predict (or estimate) the shadowing of the channel gain maps. In this paper, different 1-D interpolation algorithms are tested against a shadow fading series that exhibits decaying exponential correlation versus distance behaviour. The purpose of this paper is to investigate the validity ranges over which each interpolation algorithm works well to estimate the shadow fading. The tested validity ranges are correlation distance, standard deviation of shadow fading and data density level of measured data.","PeriodicalId":316751,"journal":{"name":"2013 7th IEEE GCC Conference and Exhibition (GCC)","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130172768","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 : 2013-11-01DOI: 10.1109/IEEEGCC.2013.6705771
U. Qidwai, E. M. Hassan, Reham M. Al Halabi, M. Shakir
This paper presents a modified design of an electronically controlled wheelchair that integrates a general-purpose controlling system attached with the main actuators to provide mobility as well as additional control of some household appliances. The wheelchair system can be used for mobility as well as for controlling the Air conditioners (AC) and television (TV) systems as outputs. The system has many different inputs such as voice, (Electroencephalography) EEG port, joystick controllers that can be customized depending on the nature of the disability of the user. The system has been customized for a range of disabilities ranging from wheelchair usage from a minor leg injury to quadriplegic level where each scenario enables the user to use the appropriate input that suits his/her situation. The system is an interesting example of technology integration and intelligent software and will be put to test at one of the centers for assistive technology development.
{"title":"Device interface for people with mobility impairment","authors":"U. Qidwai, E. M. Hassan, Reham M. Al Halabi, M. Shakir","doi":"10.1109/IEEEGCC.2013.6705771","DOIUrl":"https://doi.org/10.1109/IEEEGCC.2013.6705771","url":null,"abstract":"This paper presents a modified design of an electronically controlled wheelchair that integrates a general-purpose controlling system attached with the main actuators to provide mobility as well as additional control of some household appliances. The wheelchair system can be used for mobility as well as for controlling the Air conditioners (AC) and television (TV) systems as outputs. The system has many different inputs such as voice, (Electroencephalography) EEG port, joystick controllers that can be customized depending on the nature of the disability of the user. The system has been customized for a range of disabilities ranging from wheelchair usage from a minor leg injury to quadriplegic level where each scenario enables the user to use the appropriate input that suits his/her situation. The system is an interesting example of technology integration and intelligent software and will be put to test at one of the centers for assistive technology development.","PeriodicalId":316751,"journal":{"name":"2013 7th IEEE GCC Conference and Exhibition (GCC)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129178967","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 : 2013-11-01DOI: 10.1109/IEEEGCC.2013.6705815
Rosemary L. Edzie, M. Alahmad
In the United States, collegiate enrollment in science and engineering programs continues to decline, while European and Asian universities have increased the number of science and engineering graduates. In addition, there is a growing concern over too few females enrolling and persisting in collegiate science, technology, engineering, and mathematics (STEM) degree programs. Through increasing access to pre-collegiate STEM activities, providing a better understanding of STEM career choices, instilling of confidence in math and science, and establishing student and industry based mentoring programs, more female students will enroll and persist in collegiate STEM degree programs. This paper sets to explore the factors that influence and motivate female students to enroll and persist in collegiate STEM programs through an exploratory sequential mixed methods research framework. The framework has been formulated into a model that provides an insight into female decision to enroll and persist in collegiate STEM programs. Emphasis will be placed on the first phase of the research model, qualitative data collection.
{"title":"Exploring the factors that motivate female students to enroll and persist in a collegiate STEM degree program","authors":"Rosemary L. Edzie, M. Alahmad","doi":"10.1109/IEEEGCC.2013.6705815","DOIUrl":"https://doi.org/10.1109/IEEEGCC.2013.6705815","url":null,"abstract":"In the United States, collegiate enrollment in science and engineering programs continues to decline, while European and Asian universities have increased the number of science and engineering graduates. In addition, there is a growing concern over too few females enrolling and persisting in collegiate science, technology, engineering, and mathematics (STEM) degree programs. Through increasing access to pre-collegiate STEM activities, providing a better understanding of STEM career choices, instilling of confidence in math and science, and establishing student and industry based mentoring programs, more female students will enroll and persist in collegiate STEM degree programs. This paper sets to explore the factors that influence and motivate female students to enroll and persist in collegiate STEM programs through an exploratory sequential mixed methods research framework. The framework has been formulated into a model that provides an insight into female decision to enroll and persist in collegiate STEM programs. Emphasis will be placed on the first phase of the research model, qualitative data collection.","PeriodicalId":316751,"journal":{"name":"2013 7th IEEE GCC Conference and Exhibition (GCC)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127855105","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 : 2013-11-01DOI: 10.1109/IEEEGCC.2013.6705808
K. Ghazi, L. Ben‐Brahim
Recent developments in semiconductor technology enabled developing converters with ultra high switching frequency to achieve high power densities which increased the complexity of designing optimized gate drive circuits. This paper discusses latest developments in gate drive technologies including level-shifting, isolated power sources and drive circuit techniques which are further investigated by simulation and compared to be used in future gate drive circuits. Special considerations for designing gate drive circuits have been mentioned and foundation laid out for further optimization of their performance. Finally a new gate drive circuit was proposed based on mentioned developments and challenges discussed to bring proposed gate drive circuit into practical industrial applications.
{"title":"Towards ultra high frequency and high efficiency gate drive circuits","authors":"K. Ghazi, L. Ben‐Brahim","doi":"10.1109/IEEEGCC.2013.6705808","DOIUrl":"https://doi.org/10.1109/IEEEGCC.2013.6705808","url":null,"abstract":"Recent developments in semiconductor technology enabled developing converters with ultra high switching frequency to achieve high power densities which increased the complexity of designing optimized gate drive circuits. This paper discusses latest developments in gate drive technologies including level-shifting, isolated power sources and drive circuit techniques which are further investigated by simulation and compared to be used in future gate drive circuits. Special considerations for designing gate drive circuits have been mentioned and foundation laid out for further optimization of their performance. Finally a new gate drive circuit was proposed based on mentioned developments and challenges discussed to bring proposed gate drive circuit into practical industrial applications.","PeriodicalId":316751,"journal":{"name":"2013 7th IEEE GCC Conference and Exhibition (GCC)","volume":"388 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122781446","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 : 2013-11-01DOI: 10.1109/IEEEGCC.2013.6705772
Linah Wafai, A. Zayegh, R. Begg, J. Woulfe
Foot pain has long been associated with various pathologies of the foot. These common clinical problems often correspond with high plantar pressure, which can lead to severe plantar injury if it is left untreated. The detection of plantar pressure abnormalities is therefore of paramount importance for the diagnosis, early intervention, treatment and prevention of plantar injury. Traditional clinical methods for the diagnosis of plantar pressure abnormalities are predominantly subjective and can be unreliable. This study aimed to utilise sensor shoe-insoles to assess the asymmetry in peak plantar pressure during gait between the left and right feet of individuals with and without known foot pathologies. Outcomes of this study demonstrate that the level of asymmetry is significantly different between the control and pathological population at the third and fourth metatarsophalangeal joints (MPJs) (P <; 0.05). The use of plantar pressure measurement and asymmetry analysis may prove to be effective in the diagnosis and assessment of treatment outcomes for the prevention of foot injury.
{"title":"Asymmetry detection during pathological gait using a plantar pressure sensing system","authors":"Linah Wafai, A. Zayegh, R. Begg, J. Woulfe","doi":"10.1109/IEEEGCC.2013.6705772","DOIUrl":"https://doi.org/10.1109/IEEEGCC.2013.6705772","url":null,"abstract":"Foot pain has long been associated with various pathologies of the foot. These common clinical problems often correspond with high plantar pressure, which can lead to severe plantar injury if it is left untreated. The detection of plantar pressure abnormalities is therefore of paramount importance for the diagnosis, early intervention, treatment and prevention of plantar injury. Traditional clinical methods for the diagnosis of plantar pressure abnormalities are predominantly subjective and can be unreliable. This study aimed to utilise sensor shoe-insoles to assess the asymmetry in peak plantar pressure during gait between the left and right feet of individuals with and without known foot pathologies. Outcomes of this study demonstrate that the level of asymmetry is significantly different between the control and pathological population at the third and fourth metatarsophalangeal joints (MPJs) (P <; 0.05). The use of plantar pressure measurement and asymmetry analysis may prove to be effective in the diagnosis and assessment of treatment outcomes for the prevention of foot injury.","PeriodicalId":316751,"journal":{"name":"2013 7th IEEE GCC Conference and Exhibition (GCC)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123916493","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 : 2013-11-01DOI: 10.1109/IEEEGCC.2013.6705829
A. Abdaoui, Tarek M. Elfouly
In sensor networks, consensus is a procedure to enhance the local measurements of the sensors with those of the surrounding nodes, and leads to a final agreement about a common value. The question here is how we can achieve the the consensus in a large network containing some faulty nodes. In this paper, we present distributed binary consensus algorithm (BCA) over the wireless sensor networks (WSN) in presence of faulty nodes. With binary consensus, each sensor node, observes one of two states TRUE and FALSE and the aim is to decide which one of the two states was held by the majority of the nodes. We details the implementation of the distributed BCA in WSN when the network contains P faulty nodes. The implementation was tested on sensor nodes using the TinyOS Simulator (TOSSIM) for a WSN with a large number of nodes. Here, TOSSIM guarantees that the code performs correctly when deployed on the physical nodes. In performance evaluation, we consider the analysis of the average convergence time over the simulated environment and considering the presence of P malicious nodes. These results are presented for a WSN with different topologies such as fully connected, path, ring, Erdos Reny random, and star-shaped.
{"title":"Distributed binary consensus algorithm in wireless sensor networks with faulty nodes","authors":"A. Abdaoui, Tarek M. Elfouly","doi":"10.1109/IEEEGCC.2013.6705829","DOIUrl":"https://doi.org/10.1109/IEEEGCC.2013.6705829","url":null,"abstract":"In sensor networks, consensus is a procedure to enhance the local measurements of the sensors with those of the surrounding nodes, and leads to a final agreement about a common value. The question here is how we can achieve the the consensus in a large network containing some faulty nodes. In this paper, we present distributed binary consensus algorithm (BCA) over the wireless sensor networks (WSN) in presence of faulty nodes. With binary consensus, each sensor node, observes one of two states TRUE and FALSE and the aim is to decide which one of the two states was held by the majority of the nodes. We details the implementation of the distributed BCA in WSN when the network contains P faulty nodes. The implementation was tested on sensor nodes using the TinyOS Simulator (TOSSIM) for a WSN with a large number of nodes. Here, TOSSIM guarantees that the code performs correctly when deployed on the physical nodes. In performance evaluation, we consider the analysis of the average convergence time over the simulated environment and considering the presence of P malicious nodes. These results are presented for a WSN with different topologies such as fully connected, path, ring, Erdos Reny random, and star-shaped.","PeriodicalId":316751,"journal":{"name":"2013 7th IEEE GCC Conference and Exhibition (GCC)","volume":"563 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123070473","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 : 2013-11-01DOI: 10.1109/IEEEGCC.2013.6705769
L. Franquelo, J. I. Leon
The current energy scenario has introduced several challenges to be solved such as the efficient electrification of the oil and gas applications, the integration of clean energy generation, the use of efficient high-power and energy storage systems and the electric vehicles development. The energy industry and the electrical providers have to face the problems introduced by the integration of renewable energy systems in terms of reliability and stability of the power grid. The grid has to be robust and efficient in terms of reduced losses. In this way, for instance energy distribution systems based on the HVDC topology are being installed all over the world. On the other hand, it becomes extremely important to use energy storage systems in order to stabilize and improve the efficiency of the power systems using ultimate generation batteries, ultracapacitors, hydrogen based systems and mechanical systems, just to mention a few. On the other hand, the electrical vehicles (hybrid or pure electrical) need high performance power electronic systems to drive efficiently the power. This paper reviews briefly the current scenario where power electronics converters are being applied. In the manuscript, the main focus moves towards the energy distribution systems, the renewable energy sources, the energy storage systems and the electric vehicle applications, reviewing the different alternatives and topologies, already as industrial products or still as research lines in the academia.
{"title":"How power electronics contribute to the current energy arena","authors":"L. Franquelo, J. I. Leon","doi":"10.1109/IEEEGCC.2013.6705769","DOIUrl":"https://doi.org/10.1109/IEEEGCC.2013.6705769","url":null,"abstract":"The current energy scenario has introduced several challenges to be solved such as the efficient electrification of the oil and gas applications, the integration of clean energy generation, the use of efficient high-power and energy storage systems and the electric vehicles development. The energy industry and the electrical providers have to face the problems introduced by the integration of renewable energy systems in terms of reliability and stability of the power grid. The grid has to be robust and efficient in terms of reduced losses. In this way, for instance energy distribution systems based on the HVDC topology are being installed all over the world. On the other hand, it becomes extremely important to use energy storage systems in order to stabilize and improve the efficiency of the power systems using ultimate generation batteries, ultracapacitors, hydrogen based systems and mechanical systems, just to mention a few. On the other hand, the electrical vehicles (hybrid or pure electrical) need high performance power electronic systems to drive efficiently the power. This paper reviews briefly the current scenario where power electronics converters are being applied. In the manuscript, the main focus moves towards the energy distribution systems, the renewable energy sources, the energy storage systems and the electric vehicle applications, reviewing the different alternatives and topologies, already as industrial products or still as research lines in the academia.","PeriodicalId":316751,"journal":{"name":"2013 7th IEEE GCC Conference and Exhibition (GCC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128361830","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 : 2013-11-01DOI: 10.1109/IEEEGCC.2013.6705780
A. Al-Hassan, A. I. Sulyman, A. Alsanie
In this paper we present a threshold-based sparse NLMS algorithm. The proposed algorithm uses an energy threshold criterion to detect tap sparseness and update the active coefficients accordingly. The propsed algorithm is simple to implement, and our simulation results shows that it has better estimation performance in terms of convergence speed and MSE than the standard NLMS algorithm.
{"title":"Convergence analysis of threshold-based sparse NLMS algorithm","authors":"A. Al-Hassan, A. I. Sulyman, A. Alsanie","doi":"10.1109/IEEEGCC.2013.6705780","DOIUrl":"https://doi.org/10.1109/IEEEGCC.2013.6705780","url":null,"abstract":"In this paper we present a threshold-based sparse NLMS algorithm. The proposed algorithm uses an energy threshold criterion to detect tap sparseness and update the active coefficients accordingly. The propsed algorithm is simple to implement, and our simulation results shows that it has better estimation performance in terms of convergence speed and MSE than the standard NLMS algorithm.","PeriodicalId":316751,"journal":{"name":"2013 7th IEEE GCC Conference and Exhibition (GCC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131288154","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：