Pub Date : 1997-11-09DOI: 10.1109/IECON.1997.671802
K. Chau, C. Chan, J. Yao
Being a fourth-order circuit, the Cuk converter needs systematic studies of its nonlinear dynamics. In this paper, the investigation of the nonlinear dynamics of Cuk converters is carried out by deriving their nonlinear models and performing their spectral analyses. Nonlinear dynamics, including the additional DC offset, significant subharmonic and higher harmonic spectral contamination as well as the effects of self-intermodulation and cross-intermodulation, due to large-signal perturbations of both the duty ratio and source voltage, are investigated.
{"title":"Nonlinear modeling and spectral analysis of Cuk converters","authors":"K. Chau, C. Chan, J. Yao","doi":"10.1109/IECON.1997.671802","DOIUrl":"https://doi.org/10.1109/IECON.1997.671802","url":null,"abstract":"Being a fourth-order circuit, the Cuk converter needs systematic studies of its nonlinear dynamics. In this paper, the investigation of the nonlinear dynamics of Cuk converters is carried out by deriving their nonlinear models and performing their spectral analyses. Nonlinear dynamics, including the additional DC offset, significant subharmonic and higher harmonic spectral contamination as well as the effects of self-intermodulation and cross-intermodulation, due to large-signal perturbations of both the duty ratio and source voltage, are investigated.","PeriodicalId":404447,"journal":{"name":"Proceedings of the IECON'97 23rd International Conference on Industrial Electronics, Control, and Instrumentation (Cat. No.97CH36066)","volume":"406 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121005871","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 : 1997-11-09DOI: 10.1109/IECON.1997.671826
F. Flinders, W. Oghanna
This paper describes the development of a simulation model for an actual PWM power converter system being used in trains recently introduced to the suburban rail transport system in Brisbane, Australia. The simulation model was developed as a teaching aid in modern traction drive technology for railway technical staff. The model is constructed using the SIMULINK graphical simulation platform. To enable modelling of the electric circuit, the dynamic node technique is employed. The simulation may run on any PC and is interactive, making it an excellent educational tool.
{"title":"Simulation of a complex traction PWM rectifier using SIMULINK and the dynamic node technique","authors":"F. Flinders, W. Oghanna","doi":"10.1109/IECON.1997.671826","DOIUrl":"https://doi.org/10.1109/IECON.1997.671826","url":null,"abstract":"This paper describes the development of a simulation model for an actual PWM power converter system being used in trains recently introduced to the suburban rail transport system in Brisbane, Australia. The simulation model was developed as a teaching aid in modern traction drive technology for railway technical staff. The model is constructed using the SIMULINK graphical simulation platform. To enable modelling of the electric circuit, the dynamic node technique is employed. The simulation may run on any PC and is interactive, making it an excellent educational tool.","PeriodicalId":404447,"journal":{"name":"Proceedings of the IECON'97 23rd International Conference on Industrial Electronics, Control, and Instrumentation (Cat. No.97CH36066)","volume":"125 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116024040","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 : 1997-11-09DOI: 10.1109/IECON.1997.672028
D. Simonetti, E. Pascual, J. Sebastián, J. Uceda
An improved small-signal model for a discontinuous conduction mode (DCM) single-phase boost power factor preregulator (PFP) is presented. The model is derived using an approximation for the average current equation injected into the output of the power converter. After making small-signal perturbations, both control-to-output voltage and input voltage-to-output voltage transfer functions are obtained. Open and closed-loop experimental results validate the analysis.
{"title":"A representative small-signal model for the single-phase discontinuous boost PFP [power factor preregulator]","authors":"D. Simonetti, E. Pascual, J. Sebastián, J. Uceda","doi":"10.1109/IECON.1997.672028","DOIUrl":"https://doi.org/10.1109/IECON.1997.672028","url":null,"abstract":"An improved small-signal model for a discontinuous conduction mode (DCM) single-phase boost power factor preregulator (PFP) is presented. The model is derived using an approximation for the average current equation injected into the output of the power converter. After making small-signal perturbations, both control-to-output voltage and input voltage-to-output voltage transfer functions are obtained. Open and closed-loop experimental results validate the analysis.","PeriodicalId":404447,"journal":{"name":"Proceedings of the IECON'97 23rd International Conference on Industrial Electronics, Control, and Instrumentation (Cat. No.97CH36066)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116036769","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 : 1997-11-09DOI: 10.1109/IECON.1997.672076
Dong-Ki Min, Sung-Chan Ahn, D. Hyun
A control scheme of a three-phase voltage-source PWM power converter available for the condition of different input voltages is proposed in this paper. From the steady-state model of the power converter, the effect caused by the input voltage on the control of the input current is analyzed from the point of the linear controllability of the input current. Sufficient voltage level of the DC link to control the input current linearly is then analytically determined. The effect of the different input voltage on the DC link voltage control with a fixed-gain controller is analyzed and a simple but effective online gain tuning algorithm is proposed to obtain the optimal regulation of the link voltage. In conclusion, the validity of the proposed control scheme is proved by the experimental results.
{"title":"Control of a PWM converter in different input voltage conditions","authors":"Dong-Ki Min, Sung-Chan Ahn, D. Hyun","doi":"10.1109/IECON.1997.672076","DOIUrl":"https://doi.org/10.1109/IECON.1997.672076","url":null,"abstract":"A control scheme of a three-phase voltage-source PWM power converter available for the condition of different input voltages is proposed in this paper. From the steady-state model of the power converter, the effect caused by the input voltage on the control of the input current is analyzed from the point of the linear controllability of the input current. Sufficient voltage level of the DC link to control the input current linearly is then analytically determined. The effect of the different input voltage on the DC link voltage control with a fixed-gain controller is analyzed and a simple but effective online gain tuning algorithm is proposed to obtain the optimal regulation of the link voltage. In conclusion, the validity of the proposed control scheme is proved by the experimental results.","PeriodicalId":404447,"journal":{"name":"Proceedings of the IECON'97 23rd International Conference on Industrial Electronics, Control, and Instrumentation (Cat. No.97CH36066)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117002217","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 : 1997-11-09DOI: 10.1109/IECON.1997.671041
K. Shyu, H. Shieh
In this paper, the nonlinear sliding-mode control combining binary control approach for an input-output linearization based induction motor model is proposed to design the robust torque and flux controllers. With the proposed control, we can obtain the advantages of that: (1) the generated torque of the induction motor presents a completely linear variable, (2) the rotor flux amplitude can be accurately controlled, (3) the transient performance is substantially improved, and (4) the robustness with respect to matched and mismatched uncertainties is provided.
{"title":"Robust nonlinear torque control for induction motor drive","authors":"K. Shyu, H. Shieh","doi":"10.1109/IECON.1997.671041","DOIUrl":"https://doi.org/10.1109/IECON.1997.671041","url":null,"abstract":"In this paper, the nonlinear sliding-mode control combining binary control approach for an input-output linearization based induction motor model is proposed to design the robust torque and flux controllers. With the proposed control, we can obtain the advantages of that: (1) the generated torque of the induction motor presents a completely linear variable, (2) the rotor flux amplitude can be accurately controlled, (3) the transient performance is substantially improved, and (4) the robustness with respect to matched and mismatched uncertainties is provided.","PeriodicalId":404447,"journal":{"name":"Proceedings of the IECON'97 23rd International Conference on Industrial Electronics, Control, and Instrumentation (Cat. No.97CH36066)","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114698149","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 : 1997-11-09DOI: 10.1109/IECON.1997.671822
J.E. Baggie, J. R. Pinheiro
This paper presents the analysis and design of a new low loss auxiliary circuit for three level PWM single-phase inverters which achieve soft-switching at all semiconductor devices. The active auxiliary commutation circuit is composed of a LC circuit and two bi-directional switches which operate at ZCS and ZVS. The proposed active auxiliary commutation circuit (AACC) dispenses the use of auxiliary voltage sources. Low reactive energy is added to the converter resulting in low RMS current stresses at main switches and consequently higher efficiency is achieved. The design and experimental results are presented to prove the operation principle. A full description of the circuit operation is given.
{"title":"A simple active auxiliary commutation circuit for three-level inverters","authors":"J.E. Baggie, J. R. Pinheiro","doi":"10.1109/IECON.1997.671822","DOIUrl":"https://doi.org/10.1109/IECON.1997.671822","url":null,"abstract":"This paper presents the analysis and design of a new low loss auxiliary circuit for three level PWM single-phase inverters which achieve soft-switching at all semiconductor devices. The active auxiliary commutation circuit is composed of a LC circuit and two bi-directional switches which operate at ZCS and ZVS. The proposed active auxiliary commutation circuit (AACC) dispenses the use of auxiliary voltage sources. Low reactive energy is added to the converter resulting in low RMS current stresses at main switches and consequently higher efficiency is achieved. The design and experimental results are presented to prove the operation principle. A full description of the circuit operation is given.","PeriodicalId":404447,"journal":{"name":"Proceedings of the IECON'97 23rd International Conference on Industrial Electronics, Control, and Instrumentation (Cat. No.97CH36066)","volume":"100 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116163543","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 : 1997-11-09DOI: 10.1109/IECON.1997.668431
S. Halpin, R. Nelms, J. Schatz
A summary of issues impacting the application of double-layer capacitors in various military and commercial industry situations is given in this paper. The focus is on the performance parameters of the capacitors, which are the equivalent capacitance, the series resistance, and the parallel resistance, and how these parameters impact specific applications. Some discussion of the need to form banks of capacitors is also given for the different applications. The use of power conversion systems to satisfy load constraints (e.g. constant voltage) is provided due to the common need for this equipment in many of the applications.
{"title":"Characterization of double-layer capacitor application issues for commercial and military applications","authors":"S. Halpin, R. Nelms, J. Schatz","doi":"10.1109/IECON.1997.668431","DOIUrl":"https://doi.org/10.1109/IECON.1997.668431","url":null,"abstract":"A summary of issues impacting the application of double-layer capacitors in various military and commercial industry situations is given in this paper. The focus is on the performance parameters of the capacitors, which are the equivalent capacitance, the series resistance, and the parallel resistance, and how these parameters impact specific applications. Some discussion of the need to form banks of capacitors is also given for the different applications. The use of power conversion systems to satisfy load constraints (e.g. constant voltage) is provided due to the common need for this equipment in many of the applications.","PeriodicalId":404447,"journal":{"name":"Proceedings of the IECON'97 23rd International Conference on Industrial Electronics, Control, and Instrumentation (Cat. No.97CH36066)","volume":"8 11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116799665","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 : 1997-11-09DOI: 10.1109/IECON.1997.671079
M. Kaneko, T. Ishikawa, Y. Sogawa
There are two algorithms in the conventional elevator group control system: the minimum long-wait algorithm and the area-based control algorithm. These algorithms are designed to reduce service time (waiting time+riding time) by decreasing waiting time. This article proposes a new elevator group control system which addresses riding time as well as waiting time. This algorithm is denoted, "total fuzzy control system". Effectiveness of the total fuzzy control systems is thoroughly studied by computer simulation and the results show a better performance in wider traffic condition.
{"title":"Supervisory control for elevator group by using fuzzy expert system","authors":"M. Kaneko, T. Ishikawa, Y. Sogawa","doi":"10.1109/IECON.1997.671079","DOIUrl":"https://doi.org/10.1109/IECON.1997.671079","url":null,"abstract":"There are two algorithms in the conventional elevator group control system: the minimum long-wait algorithm and the area-based control algorithm. These algorithms are designed to reduce service time (waiting time+riding time) by decreasing waiting time. This article proposes a new elevator group control system which addresses riding time as well as waiting time. This algorithm is denoted, \"total fuzzy control system\". Effectiveness of the total fuzzy control systems is thoroughly studied by computer simulation and the results show a better performance in wider traffic condition.","PeriodicalId":404447,"journal":{"name":"Proceedings of the IECON'97 23rd International Conference on Industrial Electronics, Control, and Instrumentation (Cat. No.97CH36066)","volume":"395 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115313010","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 : 1997-11-09DOI: 10.1109/IECON.1997.668467
L. Horváth, I. Rudas, J. Bencze
This paper presents a methodology for modeling of manufacturing processes of mechanical parts. The demand for integration of manufacturing process model into product model is taken into account. In this important field of application, a need has been emerged for description of all process variants in a single model and for generic model descriptions for a cluster of manufacturing tasks. The authors have developed a four levelled generic process model. Entities of this model are easy to understand for production engineers that are represented by Petri net. In the paper, first the importance of the manufacturing process model and its interconnections with other product related models are emphasized. Following this, the manufacturing process model is described and the method of its application is outlined. Next, creating and evaluation of the model are explained. Finally, features of the model and the modeling activity are concluded.
{"title":"Petri net modeling of manufacturing processes for CAD/CAM and FMS applications","authors":"L. Horváth, I. Rudas, J. Bencze","doi":"10.1109/IECON.1997.668467","DOIUrl":"https://doi.org/10.1109/IECON.1997.668467","url":null,"abstract":"This paper presents a methodology for modeling of manufacturing processes of mechanical parts. The demand for integration of manufacturing process model into product model is taken into account. In this important field of application, a need has been emerged for description of all process variants in a single model and for generic model descriptions for a cluster of manufacturing tasks. The authors have developed a four levelled generic process model. Entities of this model are easy to understand for production engineers that are represented by Petri net. In the paper, first the importance of the manufacturing process model and its interconnections with other product related models are emphasized. Following this, the manufacturing process model is described and the method of its application is outlined. Next, creating and evaluation of the model are explained. Finally, features of the model and the modeling activity are concluded.","PeriodicalId":404447,"journal":{"name":"Proceedings of the IECON'97 23rd International Conference on Industrial Electronics, Control, and Instrumentation (Cat. No.97CH36066)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115501296","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 : 1997-11-09DOI: 10.1109/IECON.1997.668438
K. Vieira, Bogdan M. Wilamowski, R. Kubichek
This paper investigates automatic speaker recognition systems, which can be used for security purposes. The speech signal is compressed using linear prediction analysis and recognized by neural networks. This neural network technique is presented for the task of speech recognition and speaker verification. This technique first uses pattern recognition to identify the speech, then it is used to distinguish each user from all other speakers (impostors). With this method, unknown speech can be accurately classified as user or impostor speech. The approach used is based on the following steps: extraction of spectral features; training of an initial neural network to identify the speech; extraction of LPC-reflection coefficients for each user, training of a secondary neural-network to identify the user; and classification of unknown speech as either user or impostor.
{"title":"Speaker verification for security systems using artificial neural networks","authors":"K. Vieira, Bogdan M. Wilamowski, R. Kubichek","doi":"10.1109/IECON.1997.668438","DOIUrl":"https://doi.org/10.1109/IECON.1997.668438","url":null,"abstract":"This paper investigates automatic speaker recognition systems, which can be used for security purposes. The speech signal is compressed using linear prediction analysis and recognized by neural networks. This neural network technique is presented for the task of speech recognition and speaker verification. This technique first uses pattern recognition to identify the speech, then it is used to distinguish each user from all other speakers (impostors). With this method, unknown speech can be accurately classified as user or impostor speech. The approach used is based on the following steps: extraction of spectral features; training of an initial neural network to identify the speech; extraction of LPC-reflection coefficients for each user, training of a secondary neural-network to identify the user; and classification of unknown speech as either user or impostor.","PeriodicalId":404447,"journal":{"name":"Proceedings of the IECON'97 23rd International Conference on Industrial Electronics, Control, and Instrumentation (Cat. No.97CH36066)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121990787","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：