Pub Date : 2013-04-23DOI: 10.1109/ICIT.2013.6505722
M. Schulz
Increased demand in lifetime is an ongoing trend especially in applications like e-mobility or renewable energies. The designers of power electronic devices are facing the challenge to integrate their designs in continuously shrinking spaces, thus increasing the power density of inverter systems. Though smaller designs accompanied by more compact structures can lead to beneficial effects regarding stray inductances, the thermal management becomes more demanding. This paper deals with the basic design aspects regarding electrical and thermal aspects. Measurements and test results are presented showing the effects of proper design to both the thermal and lifetime situation.
{"title":"Designed to last - electrical and thermal aspects in power electronic designs","authors":"M. Schulz","doi":"10.1109/ICIT.2013.6505722","DOIUrl":"https://doi.org/10.1109/ICIT.2013.6505722","url":null,"abstract":"Increased demand in lifetime is an ongoing trend especially in applications like e-mobility or renewable energies. The designers of power electronic devices are facing the challenge to integrate their designs in continuously shrinking spaces, thus increasing the power density of inverter systems. Though smaller designs accompanied by more compact structures can lead to beneficial effects regarding stray inductances, the thermal management becomes more demanding. This paper deals with the basic design aspects regarding electrical and thermal aspects. Measurements and test results are presented showing the effects of proper design to both the thermal and lifetime situation.","PeriodicalId":192784,"journal":{"name":"2013 IEEE International Conference on Industrial Technology (ICIT)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130589980","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 : 2013-04-23DOI: 10.1109/ICIT.2013.6505849
A. Zeeman, M. J. Booysen, G. Ruggeri, B. Laganà
The Minibus public transportation sector and road safety remains a significant challenge in Africa. We propose a low cost system to monitor the taxi industry and encourage safe driving. A low cost capacitive proximity sensor for seat occupancy detection based on the loading mode capacitive sensing technique is designed. The capacitive sensor uses a single electrode to detect an occupant. We use ZigBee modules for a dynamic wireless system integration where sensors can be added or removed without modifications. A mathematical model of the capacitive sensor is developed and we determine the capacitance on the sensor's electrode. The occupied capacitance is double the unoccupied capacitance. Our results show that the proposed capacitive sensor can distinguish clearly between an unoccupied and occupied seat.
{"title":"Capacitive seat sensors for multiple occupancy detection using a low-cost setup","authors":"A. Zeeman, M. J. Booysen, G. Ruggeri, B. Laganà","doi":"10.1109/ICIT.2013.6505849","DOIUrl":"https://doi.org/10.1109/ICIT.2013.6505849","url":null,"abstract":"The Minibus public transportation sector and road safety remains a significant challenge in Africa. We propose a low cost system to monitor the taxi industry and encourage safe driving. A low cost capacitive proximity sensor for seat occupancy detection based on the loading mode capacitive sensing technique is designed. The capacitive sensor uses a single electrode to detect an occupant. We use ZigBee modules for a dynamic wireless system integration where sensors can be added or removed without modifications. A mathematical model of the capacitive sensor is developed and we determine the capacitance on the sensor's electrode. The occupied capacitance is double the unoccupied capacitance. Our results show that the proposed capacitive sensor can distinguish clearly between an unoccupied and occupied seat.","PeriodicalId":192784,"journal":{"name":"2013 IEEE International Conference on Industrial Technology (ICIT)","volume":"106 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132472630","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 : 2013-04-23DOI: 10.1109/ICIT.2013.6505775
I. Lendák, A. Erdeljan, I. Rudas
This paper describes an algorithm which automatically generates adaptive one-line diagrams of large electric power distribution systems. The proposed algorithm is different from similar algorithms as it performs adaptive one-line diagram generation, which differ for various zoom levels, showing only the most important objects (e.g. substations, pole switches, power lines) on small zoom levels and gradually adding the less important objects (e.g. lateral parts of the network) as the level of zoom rises, while maintaining the relative positions of the more important objects. The algorithm represents the distribution network as a mathematical graph and visualizes it by utilizing the divide-and-conquer and branch-and-bound algorithms. The algorithm was tested on partial, real life electric power distribution systems of up to 100 objects and it generated visually pleasing one-line diagrams.
{"title":"Algorithm for adaptive Smart Grid visualization","authors":"I. Lendák, A. Erdeljan, I. Rudas","doi":"10.1109/ICIT.2013.6505775","DOIUrl":"https://doi.org/10.1109/ICIT.2013.6505775","url":null,"abstract":"This paper describes an algorithm which automatically generates adaptive one-line diagrams of large electric power distribution systems. The proposed algorithm is different from similar algorithms as it performs adaptive one-line diagram generation, which differ for various zoom levels, showing only the most important objects (e.g. substations, pole switches, power lines) on small zoom levels and gradually adding the less important objects (e.g. lateral parts of the network) as the level of zoom rises, while maintaining the relative positions of the more important objects. The algorithm represents the distribution network as a mathematical graph and visualizes it by utilizing the divide-and-conquer and branch-and-bound algorithms. The algorithm was tested on partial, real life electric power distribution systems of up to 100 objects and it generated visually pleasing one-line diagrams.","PeriodicalId":192784,"journal":{"name":"2013 IEEE International Conference on Industrial Technology (ICIT)","volume":"115 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132508986","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 : 2013-04-23DOI: 10.1109/ICIT.2013.6505681
S. Refaat, H. Abu-Rub, M. S. Saad, E. Aboul-Zahab, A. Iqbal
This paper develop a novel, non-intrusive approach for fault-detection and diagnosis scheme of bearing faults for three-phase induction motor using stator current signals with particular interest in identifying the outer-race defect at an early stage. The most common bearing problem is the outer race defect in the load zone. The empirical mode decomposition (EMD) technique is proposed for analysis of non-stationary stator current signals. The stator current signal is decomposed in intrinsic mode function (IMF) using empirical mode decomposition. The extracted IMFs apply on the wigner-ville distribution (WVD) to have the contour pattern of WVD. Then, artificial neural network is used for pattern recognition that can effectively detect outer-race defects of bearing. The experimental results show that stator current-based monitoring with winger-ville distribution based on EMD yields a high degree of accuracy in fault detection and diagnosis of outer-race defects at different load conditions, also, a more significant and reliable indicator for detection and diagnosis of outer-race defects using artificial neural network. Experimental investigation is done and reported in the paper.
{"title":"ANN-based for detection, diagnosis the bearing fault for three phase induction motors using current signal","authors":"S. Refaat, H. Abu-Rub, M. S. Saad, E. Aboul-Zahab, A. Iqbal","doi":"10.1109/ICIT.2013.6505681","DOIUrl":"https://doi.org/10.1109/ICIT.2013.6505681","url":null,"abstract":"This paper develop a novel, non-intrusive approach for fault-detection and diagnosis scheme of bearing faults for three-phase induction motor using stator current signals with particular interest in identifying the outer-race defect at an early stage. The most common bearing problem is the outer race defect in the load zone. The empirical mode decomposition (EMD) technique is proposed for analysis of non-stationary stator current signals. The stator current signal is decomposed in intrinsic mode function (IMF) using empirical mode decomposition. The extracted IMFs apply on the wigner-ville distribution (WVD) to have the contour pattern of WVD. Then, artificial neural network is used for pattern recognition that can effectively detect outer-race defects of bearing. The experimental results show that stator current-based monitoring with winger-ville distribution based on EMD yields a high degree of accuracy in fault detection and diagnosis of outer-race defects at different load conditions, also, a more significant and reliable indicator for detection and diagnosis of outer-race defects using artificial neural network. Experimental investigation is done and reported in the paper.","PeriodicalId":192784,"journal":{"name":"2013 IEEE International Conference on Industrial Technology (ICIT)","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130827873","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 : 2013-04-23DOI: 10.1109/ICIT.2013.6505896
M. Mutingi, S. Matope
The adoption of renewable energy technologies (RET) has been facing a number of barriers and constraints due to dynamic interaction of adoption related factors. This paper simulates from a systems dynamics point of view the dynamic behavior of the RET adoption process. Complex dynamic interactions between technology adopters, policy makers and policies are captured based on systems thinking. Based on a set of input policy parameters and variables, the behavior of RET adoption is investigated. Sensitivity experiments and further “what-if” experiments are conducted in this study. Useful managerial insights are drawn from the simulation results, relevant for policy makers concerned with renewable energy technologies.
{"title":"System dynamics of renewable energy technology adoption","authors":"M. Mutingi, S. Matope","doi":"10.1109/ICIT.2013.6505896","DOIUrl":"https://doi.org/10.1109/ICIT.2013.6505896","url":null,"abstract":"The adoption of renewable energy technologies (RET) has been facing a number of barriers and constraints due to dynamic interaction of adoption related factors. This paper simulates from a systems dynamics point of view the dynamic behavior of the RET adoption process. Complex dynamic interactions between technology adopters, policy makers and policies are captured based on systems thinking. Based on a set of input policy parameters and variables, the behavior of RET adoption is investigated. Sensitivity experiments and further “what-if” experiments are conducted in this study. Useful managerial insights are drawn from the simulation results, relevant for policy makers concerned with renewable energy technologies.","PeriodicalId":192784,"journal":{"name":"2013 IEEE International Conference on Industrial Technology (ICIT)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125566927","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 : 2013-04-23DOI: 10.1109/ICIT.2013.6505927
P. Rajeevan, H. Abu-Rub, A. Iqbal, K. Gopakumar
This paper proposes a PWM scheme for common-mode voltage elimination of a five-phase inverter fed AC drive with open-end stator windings. Alternating common mode voltages are eliminated from the inverter poles as well as phase voltages thereby mitigating all the problems due to common mode voltages usually encountered in PWM inverter-fed drives, considered to be one of the main reasons for mechanical failures of the motor. In addition, the elimination of common mode voltages facilitates the use of single DC source for feeding both ends of the windings through two five-phase, two-level inverters. A carrier based technique without involving any dwell time calculations or sector identification is proposed for implementation of the PWM scheme. The proposed PWM scheme is validated by extensive simulation on a Matlab/Simulink platform and then verified experimentally on a laboratory prototype.
{"title":"Common mode voltage elimination scheme for dual-inverter fed five phase AC drives with open-end stator windings","authors":"P. Rajeevan, H. Abu-Rub, A. Iqbal, K. Gopakumar","doi":"10.1109/ICIT.2013.6505927","DOIUrl":"https://doi.org/10.1109/ICIT.2013.6505927","url":null,"abstract":"This paper proposes a PWM scheme for common-mode voltage elimination of a five-phase inverter fed AC drive with open-end stator windings. Alternating common mode voltages are eliminated from the inverter poles as well as phase voltages thereby mitigating all the problems due to common mode voltages usually encountered in PWM inverter-fed drives, considered to be one of the main reasons for mechanical failures of the motor. In addition, the elimination of common mode voltages facilitates the use of single DC source for feeding both ends of the windings through two five-phase, two-level inverters. A carrier based technique without involving any dwell time calculations or sector identification is proposed for implementation of the PWM scheme. The proposed PWM scheme is validated by extensive simulation on a Matlab/Simulink platform and then verified experimentally on a laboratory prototype.","PeriodicalId":192784,"journal":{"name":"2013 IEEE International Conference on Industrial Technology (ICIT)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121554662","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 : 2013-04-23DOI: 10.1109/ICIT.2013.6505870
J. Barnard
Operational performance monitoring (OPM) is a formal system of measurement, validation, analysis and reporting. The Anglo American Platinum OPM framework, version R2012, provides a unique software solution, built on MATLAB, specifically tailored for AA Platinum, yet offers a generic design that may be tailored for more than one application domain, on a quick path to deployment.
运行绩效监测(OPM)是一个正式的测量、验证、分析和报告系统。Anglo American Platinum OPM框架R2012版本，提供了一个独特的软件解决方案，构建在MATLAB上，专门为AA Platinum定制，但提供了一个通用的设计，可以为多个应用领域量身定制，在快速部署的道路上。
{"title":"Operational performance monitoring framework for Anglo American Platinum","authors":"J. Barnard","doi":"10.1109/ICIT.2013.6505870","DOIUrl":"https://doi.org/10.1109/ICIT.2013.6505870","url":null,"abstract":"Operational performance monitoring (OPM) is a formal system of measurement, validation, analysis and reporting. The Anglo American Platinum OPM framework, version R2012, provides a unique software solution, built on MATLAB, specifically tailored for AA Platinum, yet offers a generic design that may be tailored for more than one application domain, on a quick path to deployment.","PeriodicalId":192784,"journal":{"name":"2013 IEEE International Conference on Industrial Technology (ICIT)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124866418","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 : 2013-04-23DOI: 10.1109/ICIT.2013.6505784
B. Bilal, V. Sambou, P. Ndiaye, C. F. Kébé, M. Ndongo
This paper deals with a methodology of sizing hybrid systems solar/wind/battery optimized by minimizing the annualized cost system (ACS) and the loss of power supply probability (LPSP) using multi-objective genetic algorithm. The developed methodology was applied using the hourly solar, temperature and the wind speed data collected for one year on the site of Potou located in the northwestern coast of Senegal. The annual average hourly load profile of a typical remote village located in the northwestern coast of Senegal which energy is of 94 kWh/day has been used. The obtained results show that the cost of the optimal configuration strongly depends on the loss of power supply probability (LPSP). For example, the cost of the optimal configuration decreases by 25 % when the loss of power supply probability (LPSP) grows to 1% from 0%.
{"title":"Multi-objective design of PV-wind-batteries hybrid systems by minimizing the annualized cost system and the loss of power supply probability (LPSP)","authors":"B. Bilal, V. Sambou, P. Ndiaye, C. F. Kébé, M. Ndongo","doi":"10.1109/ICIT.2013.6505784","DOIUrl":"https://doi.org/10.1109/ICIT.2013.6505784","url":null,"abstract":"This paper deals with a methodology of sizing hybrid systems solar/wind/battery optimized by minimizing the annualized cost system (ACS) and the loss of power supply probability (LPSP) using multi-objective genetic algorithm. The developed methodology was applied using the hourly solar, temperature and the wind speed data collected for one year on the site of Potou located in the northwestern coast of Senegal. The annual average hourly load profile of a typical remote village located in the northwestern coast of Senegal which energy is of 94 kWh/day has been used. The obtained results show that the cost of the optimal configuration strongly depends on the loss of power supply probability (LPSP). For example, the cost of the optimal configuration decreases by 25 % when the loss of power supply probability (LPSP) grows to 1% from 0%.","PeriodicalId":192784,"journal":{"name":"2013 IEEE International Conference on Industrial Technology (ICIT)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124992185","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 : 2013-04-23DOI: 10.1109/ICIT.2013.6505743
D. Pentz
This paper further elaborates on the topic of conductor optimization for planar helical foil windings. Part 1 of this work briefly covers the classical design methods and new schemes suggested for ac-inductors supported by two case studies. Optimisation of the windings used in filter inductors, carrying both ac- and dc-currents simultaneously, are handled in Part 2 of the publication. Winding shaping techniques, formerly used for cylindrical conductor windings, are adapted for helical foil windings placed in gapped cores. The concept of varying conductor thickness is further used here to achieve substantial reduction in overall losses with the further advantage of drastically reducing the time needed for obtaining the optimal winding shape. The calorimetric methods used to verify results experimentally are also included in this part.
{"title":"Overview of helical foil winding design for planar magnetic components","authors":"D. Pentz","doi":"10.1109/ICIT.2013.6505743","DOIUrl":"https://doi.org/10.1109/ICIT.2013.6505743","url":null,"abstract":"This paper further elaborates on the topic of conductor optimization for planar helical foil windings. Part 1 of this work briefly covers the classical design methods and new schemes suggested for ac-inductors supported by two case studies. Optimisation of the windings used in filter inductors, carrying both ac- and dc-currents simultaneously, are handled in Part 2 of the publication. Winding shaping techniques, formerly used for cylindrical conductor windings, are adapted for helical foil windings placed in gapped cores. The concept of varying conductor thickness is further used here to achieve substantial reduction in overall losses with the further advantage of drastically reducing the time needed for obtaining the optimal winding shape. The calorimetric methods used to verify results experimentally are also included in this part.","PeriodicalId":192784,"journal":{"name":"2013 IEEE International Conference on Industrial Technology (ICIT)","volume":"8 12","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114052464","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 : 2013-04-23DOI: 10.1109/ICIT.2013.6505911
M. Ojaghi, M. Azari, M. Darabian
Distributed generation (DG) planning problem, i.e. finding the optimal size and location of DG units, is a Mixed Integer Non-linear Problem (MINLP). Typically finding the optimal solution of a MINLP problem is a complicated duty. This paper is focused on optimal solution of DG planning problem (DGPP) using Imperialist Competitive Algorithm (ICA) in distribution networks. DGPP is converted to an optimization problem with the multi-objective function including the minimum network power losses, the better voltage regulation and the improving voltage stability of the distribution system. The effectiveness of the proposed approach is confirmed on 33-bus and 69-bus test systems under different operating conditions. The comparative analysis is made between other evolutionary methods like GA and PSO through some performance indices to demonstrate its flexibility and effectiveness.
{"title":"Multi-objective evolutionary scheme for distributed generations planning in distribution networks","authors":"M. Ojaghi, M. Azari, M. Darabian","doi":"10.1109/ICIT.2013.6505911","DOIUrl":"https://doi.org/10.1109/ICIT.2013.6505911","url":null,"abstract":"Distributed generation (DG) planning problem, i.e. finding the optimal size and location of DG units, is a Mixed Integer Non-linear Problem (MINLP). Typically finding the optimal solution of a MINLP problem is a complicated duty. This paper is focused on optimal solution of DG planning problem (DGPP) using Imperialist Competitive Algorithm (ICA) in distribution networks. DGPP is converted to an optimization problem with the multi-objective function including the minimum network power losses, the better voltage regulation and the improving voltage stability of the distribution system. The effectiveness of the proposed approach is confirmed on 33-bus and 69-bus test systems under different operating conditions. The comparative analysis is made between other evolutionary methods like GA and PSO through some performance indices to demonstrate its flexibility and effectiveness.","PeriodicalId":192784,"journal":{"name":"2013 IEEE International Conference on Industrial Technology (ICIT)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131371691","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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