Pub Date : 2001-11-29DOI: 10.1109/IECON.2001.975974
M. Raina, H. Toliyat
The induction motor (IM) is the most widely used motor for high performance drive applications. The reason is that it is robust and can be used at higher speeds than DC motors available for industrial applications. Owing to the very large-scale implementation of the IM in industrial drive systems, the effect of the parameters on the control scheme has been the subject of much research. Since the motor parameters change considerably with temperature, frequency and saturation, over time they can greatly affect the performance of the drive system. This paper attempts to provide a synopsis of the major techniques used for the parameter estimation, while also illustrating the wide applications by providing a summary of techniques that are drawn from other branches of engineering. The main techniques that have been covered are spectral analysis of the currents and voltages, use of observers and models and the estimation using nonlinear modeling of IM.
{"title":"Parameter estimation of induction motors-a review and status report","authors":"M. Raina, H. Toliyat","doi":"10.1109/IECON.2001.975974","DOIUrl":"https://doi.org/10.1109/IECON.2001.975974","url":null,"abstract":"The induction motor (IM) is the most widely used motor for high performance drive applications. The reason is that it is robust and can be used at higher speeds than DC motors available for industrial applications. Owing to the very large-scale implementation of the IM in industrial drive systems, the effect of the parameters on the control scheme has been the subject of much research. Since the motor parameters change considerably with temperature, frequency and saturation, over time they can greatly affect the performance of the drive system. This paper attempts to provide a synopsis of the major techniques used for the parameter estimation, while also illustrating the wide applications by providing a summary of techniques that are drawn from other branches of engineering. The main techniques that have been covered are spectral analysis of the currents and voltages, use of observers and models and the estimation using nonlinear modeling of IM.","PeriodicalId":345608,"journal":{"name":"IECON'01. 27th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.37243)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129554747","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 : 2001-11-29DOI: 10.1109/IECON.2001.975869
J. Yoshitsugu, E. Hiraki, M. Nakaoka, K. Inoue
This paper presents an auxiliary active quasi-resonant DC link snubber-assisted three phase voltage source type soft-switching inverter for AC servo motor drive applications. The operation of this quasi-resonant DC link snubber circuit and its circuit parameter design method are described and three phase voltage source soft switching inverter using a quasi-resonant DC link snubber treated here is evaluated and discussed from an experimental point of view. In addition to these, the motor current and the motor speed response under the soft switching are compared with that of the conventional hard switching condition. The effectiveness of the soft switching inverter-fed permanent magnet AC servo motor drive system is proven by the common mode current in the inverter driven motor side and the conductive noise in the mains terminal interface voltage as compared with those of the conventional hard switching inverter-fed permanent AC servo motor drive system.
{"title":"Active edge-resonant DC link snubber-assisted three phase soft switching inverter for AC servo drive","authors":"J. Yoshitsugu, E. Hiraki, M. Nakaoka, K. Inoue","doi":"10.1109/IECON.2001.975869","DOIUrl":"https://doi.org/10.1109/IECON.2001.975869","url":null,"abstract":"This paper presents an auxiliary active quasi-resonant DC link snubber-assisted three phase voltage source type soft-switching inverter for AC servo motor drive applications. The operation of this quasi-resonant DC link snubber circuit and its circuit parameter design method are described and three phase voltage source soft switching inverter using a quasi-resonant DC link snubber treated here is evaluated and discussed from an experimental point of view. In addition to these, the motor current and the motor speed response under the soft switching are compared with that of the conventional hard switching condition. The effectiveness of the soft switching inverter-fed permanent magnet AC servo motor drive system is proven by the common mode current in the inverter driven motor side and the conductive noise in the mains terminal interface voltage as compared with those of the conventional hard switching inverter-fed permanent AC servo motor drive system.","PeriodicalId":345608,"journal":{"name":"IECON'01. 27th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.37243)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130073170","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 : 2001-11-29DOI: 10.1109/IECON.2001.976013
Beomseok Chae, Woo-Cheol Lee, D. Hyun, Taeck-Kie Lee
A protection scheme for a series active compensator, which is composed of unified power quality conditioner (UPQC) or hybrid active power filter, is presented and analyzed in this paper. The proposed series active compensator operated as a high impedance "k(/spl Omega/)" to the fundamental components when overcurrent occurs in the power distribution system, and three control strategies are proposed in this paper. The first is the method of detecting the fundamental source current through the p-q theory, the second is the method by detecting the fundamental component of load current in synchronous reference frame (SRF) and the third is the method by detecting the input voltage. When the overcurrent occurs in the power distribution system, the proposed scheme protects the series active compensator without additional protection circuits. The validity of the proposed protection scheme is investigated through experimental results in the hybrid active power filter systems.
{"title":"An overcurrent protection scheme for series active compensators","authors":"Beomseok Chae, Woo-Cheol Lee, D. Hyun, Taeck-Kie Lee","doi":"10.1109/IECON.2001.976013","DOIUrl":"https://doi.org/10.1109/IECON.2001.976013","url":null,"abstract":"A protection scheme for a series active compensator, which is composed of unified power quality conditioner (UPQC) or hybrid active power filter, is presented and analyzed in this paper. The proposed series active compensator operated as a high impedance \"k(/spl Omega/)\" to the fundamental components when overcurrent occurs in the power distribution system, and three control strategies are proposed in this paper. The first is the method of detecting the fundamental source current through the p-q theory, the second is the method by detecting the fundamental component of load current in synchronous reference frame (SRF) and the third is the method by detecting the input voltage. When the overcurrent occurs in the power distribution system, the proposed scheme protects the series active compensator without additional protection circuits. The validity of the proposed protection scheme is investigated through experimental results in the hybrid active power filter systems.","PeriodicalId":345608,"journal":{"name":"IECON'01. 27th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.37243)","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128920017","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 : 2001-11-29DOI: 10.1109/IECON.2001.976551
M. Haji, H. Toliyat
This paper presents a model of the DC motor with an eccentric rotor. The winding function theory shows the effect of the eccentricity fault on the motor inductances and simulation is done using a nonsymmetric air-gap function. A modified equation is presented to describe the rotor slot harmonics in the DC motor. To detect the fault, a pattern recognition technique is utilized. The proposed algorithm works at steady state and uses armature current as input. In order to provide the appropriate feature for the classifier, the rotor speed is needed, therefore the speed is estimated from armature current, using commutation harmonics. The experimental results obtained from a 3 hp shunt DC motor shows the strength of this method. In order to cover many different motor load conditions, data are collected at different speeds for both a healthy DC motor and a DC motor with an unbalance load which can simulate static eccentricity.
{"title":"Rotor eccentricity fault detection of a DC motor","authors":"M. Haji, H. Toliyat","doi":"10.1109/IECON.2001.976551","DOIUrl":"https://doi.org/10.1109/IECON.2001.976551","url":null,"abstract":"This paper presents a model of the DC motor with an eccentric rotor. The winding function theory shows the effect of the eccentricity fault on the motor inductances and simulation is done using a nonsymmetric air-gap function. A modified equation is presented to describe the rotor slot harmonics in the DC motor. To detect the fault, a pattern recognition technique is utilized. The proposed algorithm works at steady state and uses armature current as input. In order to provide the appropriate feature for the classifier, the rotor speed is needed, therefore the speed is estimated from armature current, using commutation harmonics. The experimental results obtained from a 3 hp shunt DC motor shows the strength of this method. In order to cover many different motor load conditions, data are collected at different speeds for both a healthy DC motor and a DC motor with an unbalance load which can simulate static eccentricity.","PeriodicalId":345608,"journal":{"name":"IECON'01. 27th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.37243)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128956363","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 : 2001-11-29DOI: 10.1109/IECON.2001.975551
E. Inelmen
Sweeping changes in technology require that education be now more than ever flexible enough to harness the young graduates with the necessary professional skills they will be required to have in the future. This paper proposes a "roadmap for an undergraduate industrial electronic design program" which the learners will be using throughout the four years of study. It is hoped that an integrated project based learning approach will better motivate the learners to go deeper into the wonderful world of modern technology.
{"title":"A roadmap for an integrated undergraduate industrial electronics design program","authors":"E. Inelmen","doi":"10.1109/IECON.2001.975551","DOIUrl":"https://doi.org/10.1109/IECON.2001.975551","url":null,"abstract":"Sweeping changes in technology require that education be now more than ever flexible enough to harness the young graduates with the necessary professional skills they will be required to have in the future. This paper proposes a \"roadmap for an undergraduate industrial electronic design program\" which the learners will be using throughout the four years of study. It is hoped that an integrated project based learning approach will better motivate the learners to go deeper into the wonderful world of modern technology.","PeriodicalId":345608,"journal":{"name":"IECON'01. 27th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.37243)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128980284","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 : 2001-11-29DOI: 10.1109/IECON.2001.975613
P.E.M. Almeida, P. Tibúrcio Pereira, M. Godoy Simões
In this work, an engineering solution to a very common problem in mobile telephony is proposed using the artificial neural networks theory. The radio frequency (RF) level mapping problem is described and some considerations about its solution are taken. The structures and operation details of CMAC and fuzzy-CMAC neural networks are also discussed and a solution to the above problem is derived. The steps needed to reach accurate and reliable results are depicted. Results obtained with real field data acquired by Telemig Cellular Company from Brazil are shown and a final analysis is made considering the performance achieved with the described approach. Finally, some improvements to the presented solution are proposed, as suggestions to continuing the current research.
{"title":"Mobile telephony RF mapping using fuzzy-CMAC neural networks","authors":"P.E.M. Almeida, P. Tibúrcio Pereira, M. Godoy Simões","doi":"10.1109/IECON.2001.975613","DOIUrl":"https://doi.org/10.1109/IECON.2001.975613","url":null,"abstract":"In this work, an engineering solution to a very common problem in mobile telephony is proposed using the artificial neural networks theory. The radio frequency (RF) level mapping problem is described and some considerations about its solution are taken. The structures and operation details of CMAC and fuzzy-CMAC neural networks are also discussed and a solution to the above problem is derived. The steps needed to reach accurate and reliable results are depicted. Results obtained with real field data acquired by Telemig Cellular Company from Brazil are shown and a final analysis is made considering the performance achieved with the described approach. Finally, some improvements to the presented solution are proposed, as suggestions to continuing the current research.","PeriodicalId":345608,"journal":{"name":"IECON'01. 27th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.37243)","volume":"126 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122375020","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 : 2001-11-29DOI: 10.1109/IECON.2001.975532
A. Malinowski, B. Wilamowski
This tutorial covers all primary technologies that can be used for Web programming with applications to the Internet based data acquisition and system control. The presentation is divided into two parts. The first part discusses several programming languages as programming tools. It provides in depth discussion of the tasks that are best to implement with and on the advantages versus challenges associated with particular cases. The following tools are covered: HTML, JavaScript, Java Applets, Cookies, CGI, PERL, PHP, native languages (C/C++), and Web server configuration for security. Special emphasis is given to PERL and JAVA. Several programming examples for client, server and client-server applications are provided. The fragments of code are selected so that they provide good jumpstart to programming in particular languages for anybody with good programming skills in any programming language (preferably C++ or C). Advantages and disadvantages of different computer languages are discussed so a proper programming platform for different applications and task can be chosen.
{"title":"Internet technology as a tool for solving engineering problems","authors":"A. Malinowski, B. Wilamowski","doi":"10.1109/IECON.2001.975532","DOIUrl":"https://doi.org/10.1109/IECON.2001.975532","url":null,"abstract":"This tutorial covers all primary technologies that can be used for Web programming with applications to the Internet based data acquisition and system control. The presentation is divided into two parts. The first part discusses several programming languages as programming tools. It provides in depth discussion of the tasks that are best to implement with and on the advantages versus challenges associated with particular cases. The following tools are covered: HTML, JavaScript, Java Applets, Cookies, CGI, PERL, PHP, native languages (C/C++), and Web server configuration for security. Special emphasis is given to PERL and JAVA. Several programming examples for client, server and client-server applications are provided. The fragments of code are selected so that they provide good jumpstart to programming in particular languages for anybody with good programming skills in any programming language (preferably C++ or C). Advantages and disadvantages of different computer languages are discussed so a proper programming platform for different applications and task can be chosen.","PeriodicalId":345608,"journal":{"name":"IECON'01. 27th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.37243)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130848027","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 : 2001-11-29DOI: 10.1109/IECON.2001.976452
J. Pelaez, M. A. Aguiar, R. C. Destro, Z. Kovacs, M. Simões
The cost of equipment maintenance represents an important budgetary item in industrial and commercial applications. Smart machines are able to evaluate online a number of its own vitalities helping operators to diagnose faults. Most often the origins of the problems are buried into intractable and not usually relevant data. Some neural architectures are presented for recognizing those operational trajectories that are the early symptoms of faults in these smart machines. In order to cope with such classification problem, a neural architecture defined as PREMON (predictive maintenance oriented network) is designed. The main advantage of the system is its brain-inspired philosophy that allow it to be applied to a great deal of systems that are degraded or damaged because of their interaction with its environment.
{"title":"Predictive maintenance oriented neural network system - PREMON","authors":"J. Pelaez, M. A. Aguiar, R. C. Destro, Z. Kovacs, M. Simões","doi":"10.1109/IECON.2001.976452","DOIUrl":"https://doi.org/10.1109/IECON.2001.976452","url":null,"abstract":"The cost of equipment maintenance represents an important budgetary item in industrial and commercial applications. Smart machines are able to evaluate online a number of its own vitalities helping operators to diagnose faults. Most often the origins of the problems are buried into intractable and not usually relevant data. Some neural architectures are presented for recognizing those operational trajectories that are the early symptoms of faults in these smart machines. In order to cope with such classification problem, a neural architecture defined as PREMON (predictive maintenance oriented network) is designed. The main advantage of the system is its brain-inspired philosophy that allow it to be applied to a great deal of systems that are degraded or damaged because of their interaction with its environment.","PeriodicalId":345608,"journal":{"name":"IECON'01. 27th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.37243)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130269474","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 : 2001-11-29DOI: 10.1109/IECON.2001.975547
K. Hashimoto, I. Godler, T. Ninomiya
In this paper, the authors investigate relations between the acceleration controller gain and the stability or vibrational response of a speed control system with acceleration control loop in a discrete time. The stability or vibrational response of the system is besides acceleration controller's gain also related to the speed controller's gain, sampling period, and bandwidth of acceleration sensor. The gain limit of acceleration controller becomes lower if the sampling frequency is low, when the bandwidth of acceleration sensor is high, or the gain of a speed controller is high. The results, analysis, and experimental results are shown in this paper.
{"title":"Sampling period in discrete time acceleration control","authors":"K. Hashimoto, I. Godler, T. Ninomiya","doi":"10.1109/IECON.2001.975547","DOIUrl":"https://doi.org/10.1109/IECON.2001.975547","url":null,"abstract":"In this paper, the authors investigate relations between the acceleration controller gain and the stability or vibrational response of a speed control system with acceleration control loop in a discrete time. The stability or vibrational response of the system is besides acceleration controller's gain also related to the speed controller's gain, sampling period, and bandwidth of acceleration sensor. The gain limit of acceleration controller becomes lower if the sampling frequency is low, when the bandwidth of acceleration sensor is high, or the gain of a speed controller is high. The results, analysis, and experimental results are shown in this paper.","PeriodicalId":345608,"journal":{"name":"IECON'01. 27th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.37243)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126664626","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 : 2001-11-29DOI: 10.1109/IECON.2001.976020
C. Dufour, J. Bélanger
This paper presents new simulation software that allows the efficient and accurate fixed-time-step simulation of complex event-based dynamic systems. The software, named ARTEMIS/sup TM/ (Advanced Real-Time Electro-Mechanical Transient Simulator), accurately simulates time-segment linear systems with discontinuities occurring anywhere between time-steps. The new software is used for the simulation of energy and power system dynamics, and is implemented in the ARTEMIS Add-On for Simulink's Power System Blockset. With ARTEMIS Discrete Time Compensation of Switching Events (DTCSE), the between-step events are transparently taken into account and compensated for in the simulation results. This eliminates sub-synchronous jitter while causing only minor increase in both the average time-step and real-time time-step (typically less than 1.0%) making ARTEMIS with DTCSE suitable software for real-time simulation of precision-critical hardware-in-the-loop (HIL) systems. The DTCSE algorithm is very good at handling typically challenging fixed-time-step simulation cases, like multiple single time-step discontinuities.
{"title":"Discrete time compensation of switching events for accurate real-time simulation of power systems","authors":"C. Dufour, J. Bélanger","doi":"10.1109/IECON.2001.976020","DOIUrl":"https://doi.org/10.1109/IECON.2001.976020","url":null,"abstract":"This paper presents new simulation software that allows the efficient and accurate fixed-time-step simulation of complex event-based dynamic systems. The software, named ARTEMIS/sup TM/ (Advanced Real-Time Electro-Mechanical Transient Simulator), accurately simulates time-segment linear systems with discontinuities occurring anywhere between time-steps. The new software is used for the simulation of energy and power system dynamics, and is implemented in the ARTEMIS Add-On for Simulink's Power System Blockset. With ARTEMIS Discrete Time Compensation of Switching Events (DTCSE), the between-step events are transparently taken into account and compensated for in the simulation results. This eliminates sub-synchronous jitter while causing only minor increase in both the average time-step and real-time time-step (typically less than 1.0%) making ARTEMIS with DTCSE suitable software for real-time simulation of precision-critical hardware-in-the-loop (HIL) systems. The DTCSE algorithm is very good at handling typically challenging fixed-time-step simulation cases, like multiple single time-step discontinuities.","PeriodicalId":345608,"journal":{"name":"IECON'01. 27th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.37243)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121588156","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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