Pub Date : 2006-07-09DOI: 10.1109/ISIE.2006.296047
Bo Li, Xiujie Wang, L. Nian
Suspension insulator strings are used in high voltage transmission lines and substations widely and they are important for the power system on insulation. This paper describes some insulation ability of suspension insulator strings and completes some exploration work to the remote online monitoring system for suspension insulator strings of high voltage transmission lines and substations. A new method of combinative leakage current and pulse current for insulators is introduced. This monitoring system can monitor the leakage current and pulse current of suspension insulator strings effectively, and it can make use of computer and communication technology to process the real-time signal which is able to reflect the insulation state with the relevant data of insulators. The leakage current of suspension insulator strings can incarnate the grade of insulators contamination. Accordingly, the pulse current of them can embody the characteristic of internal insulation. Base on these methods, the system has the real-time early warning function, and the pre-warning work can be realized for the pollution flashover. The experimental equipment is also installed in the high voltage laboratory and the software of this system is programming. We test the system and improve it continuously to achieve that this system can be used in field early. This can help the operators obtaining the data of insulators indoors, cleaning and maintaining the insulators designedly, and reducing the maintenance expenses of effectively
{"title":"Remote Online Monitoring System for Suspension Insulator Strings","authors":"Bo Li, Xiujie Wang, L. Nian","doi":"10.1109/ISIE.2006.296047","DOIUrl":"https://doi.org/10.1109/ISIE.2006.296047","url":null,"abstract":"Suspension insulator strings are used in high voltage transmission lines and substations widely and they are important for the power system on insulation. This paper describes some insulation ability of suspension insulator strings and completes some exploration work to the remote online monitoring system for suspension insulator strings of high voltage transmission lines and substations. A new method of combinative leakage current and pulse current for insulators is introduced. This monitoring system can monitor the leakage current and pulse current of suspension insulator strings effectively, and it can make use of computer and communication technology to process the real-time signal which is able to reflect the insulation state with the relevant data of insulators. The leakage current of suspension insulator strings can incarnate the grade of insulators contamination. Accordingly, the pulse current of them can embody the characteristic of internal insulation. Base on these methods, the system has the real-time early warning function, and the pre-warning work can be realized for the pollution flashover. The experimental equipment is also installed in the high voltage laboratory and the software of this system is programming. We test the system and improve it continuously to achieve that this system can be used in field early. This can help the operators obtaining the data of insulators indoors, cleaning and maintaining the insulators designedly, and reducing the maintenance expenses of effectively","PeriodicalId":296467,"journal":{"name":"2006 IEEE International Symposium on Industrial Electronics","volume":"26 52","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114044017","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 : 2006-07-09DOI: 10.1109/ISIE.2006.295656
F. Padilha, Walter, I., Suemitsu, M. D. Bellar, P. M. Lourenco
This paper presents a new hardware implementation of gate drive circuits based on the charge-pump technique, which allows independent trigger and long turn-on time of the power switches. The proposed circuit is applied to low power neutral-point clamped multilevel inverters (NPC) with MGDs (MOS-gate driver ICs). Experimental results of a laboratory prototype are presented and demonstrate the validity of the design method
{"title":"Practical Considerations on the Gate Drive Implementation for Three-Level Voltage Source Inverters","authors":"F. Padilha, Walter, I., Suemitsu, M. D. Bellar, P. M. Lourenco","doi":"10.1109/ISIE.2006.295656","DOIUrl":"https://doi.org/10.1109/ISIE.2006.295656","url":null,"abstract":"This paper presents a new hardware implementation of gate drive circuits based on the charge-pump technique, which allows independent trigger and long turn-on time of the power switches. The proposed circuit is applied to low power neutral-point clamped multilevel inverters (NPC) with MGDs (MOS-gate driver ICs). Experimental results of a laboratory prototype are presented and demonstrate the validity of the design method","PeriodicalId":296467,"journal":{"name":"2006 IEEE International Symposium on Industrial Electronics","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114480846","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 : 2006-07-09DOI: 10.1109/ISIE.2006.296109
M. Lauria, I. Nadeau, P. Lepage, Y. Morin, P. Giguère, F. Gagnon, D. Létourneau, F. Michaud
This paper presents the kinematical analysis of AZIMUT-2. The utilization of a new wheel concept called the AZIMUT wheel allowed us to create an innovative omnidirectional non-holonomic robot. Novelty of this wheel concept resides in the non-conventional positioning of the steering axis and the wheel axis. We propose a kinematical model based on the geometrical constraints of these wheels. The degree of mobility, steerability and maneuverability are studied. Additionally, we describe a special design implementation of the wheel mechanism to overcome an hyper-motorization issue inherent to this wheel geometrical properties. Finally, we describe AZIMUT-2's two operational modes and its seven locomotion modes, along with a control algorithm based on the kinematical model of the robot
{"title":"Kinematical Analysis of a Four Steered Wheeled Mobile Robot","authors":"M. Lauria, I. Nadeau, P. Lepage, Y. Morin, P. Giguère, F. Gagnon, D. Létourneau, F. Michaud","doi":"10.1109/ISIE.2006.296109","DOIUrl":"https://doi.org/10.1109/ISIE.2006.296109","url":null,"abstract":"This paper presents the kinematical analysis of AZIMUT-2. The utilization of a new wheel concept called the AZIMUT wheel allowed us to create an innovative omnidirectional non-holonomic robot. Novelty of this wheel concept resides in the non-conventional positioning of the steering axis and the wheel axis. We propose a kinematical model based on the geometrical constraints of these wheels. The degree of mobility, steerability and maneuverability are studied. Additionally, we describe a special design implementation of the wheel mechanism to overcome an hyper-motorization issue inherent to this wheel geometrical properties. Finally, we describe AZIMUT-2's two operational modes and its seven locomotion modes, along with a control algorithm based on the kinematical model of the robot","PeriodicalId":296467,"journal":{"name":"2006 IEEE International Symposium on Industrial Electronics","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121877265","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 : 2006-07-09DOI: 10.1109/ISIE.2006.295645
S. Toscher, T. Reinemann, R. Kasper, M. Hartmann
FPGAs are an increasing alternative for implementing signal processing in mechatronics. But unfortunately they lack an on-chip ADC. This paper presents the approach and results of a bit serial implementation of a reconfigurable delta-sigma ADC using Texas Instrument's four channel delta-sigma-modulator ADS1204. Filtering and decimation is accomplished in three stages by different filter types. The implementation has been done on a Xilinx Virtex4 using VHDL for specification. Bit serial arithmetic has been used to reduce implementation cost
{"title":"A Reconfigurable Delta-Sigma ADC","authors":"S. Toscher, T. Reinemann, R. Kasper, M. Hartmann","doi":"10.1109/ISIE.2006.295645","DOIUrl":"https://doi.org/10.1109/ISIE.2006.295645","url":null,"abstract":"FPGAs are an increasing alternative for implementing signal processing in mechatronics. But unfortunately they lack an on-chip ADC. This paper presents the approach and results of a bit serial implementation of a reconfigurable delta-sigma ADC using Texas Instrument's four channel delta-sigma-modulator ADS1204. Filtering and decimation is accomplished in three stages by different filter types. The implementation has been done on a Xilinx Virtex4 using VHDL for specification. Bit serial arithmetic has been used to reduce implementation cost","PeriodicalId":296467,"journal":{"name":"2006 IEEE International Symposium on Industrial Electronics","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121921956","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 : 2006-07-09DOI: 10.1109/ISIE.2006.295935
Hai-Jiao Guo
Switched reluctance motors (SR motors) have attracted so much attention because its desirable features, including simple construction, high reliability and low cost. In addition, the useful technique called direct torque control (DTC), that has been confirmed at induction motors (IMs) and blushless DC motors (BLDCMs), has been proposed applied to SR motors. But basic principle of SR motors is different from IMs and BLDCMs, the recognition of DTC for SR motors similar to IMs and BLDCMs are incorrect mistake. In the paper, we study the DTC technique applied in SR motors, and give a physical expression about the DTC technique used in SR motors. Some considerations about difference from conventional motors have been invested and some important inherent characteristics of DTC technique used in SR motors have been cleared
{"title":"Considerations of Direct Torque Control for Switched Reluctance Motors","authors":"Hai-Jiao Guo","doi":"10.1109/ISIE.2006.295935","DOIUrl":"https://doi.org/10.1109/ISIE.2006.295935","url":null,"abstract":"Switched reluctance motors (SR motors) have attracted so much attention because its desirable features, including simple construction, high reliability and low cost. In addition, the useful technique called direct torque control (DTC), that has been confirmed at induction motors (IMs) and blushless DC motors (BLDCMs), has been proposed applied to SR motors. But basic principle of SR motors is different from IMs and BLDCMs, the recognition of DTC for SR motors similar to IMs and BLDCMs are incorrect mistake. In the paper, we study the DTC technique applied in SR motors, and give a physical expression about the DTC technique used in SR motors. Some considerations about difference from conventional motors have been invested and some important inherent characteristics of DTC technique used in SR motors have been cleared","PeriodicalId":296467,"journal":{"name":"2006 IEEE International Symposium on Industrial Electronics","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122070839","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 : 2006-07-09DOI: 10.1109/ISIE.2006.295748
C. Petry, J. Fagundes, I. Barbi
The focus of this paper is the study of direct AC-AC converters, beginning by buck, half-bridge, full-bridge and push-pull converters. From the basic converters we apply a simple methodology to make possible the use of switches in commercial configurations. After that, eight line conditioners were proposed supplying them on the line side or on the load side and the static gain transformer turns ratios were presented. It can be highlighted that some of the studied topologies are known in the literature and others are new. For one of the presented topologies, the design of a 3 kVA line conditioner is developed and experimental results are shown, certifying the correct operation of the drive strategy used
{"title":"New Direct Ac-Ac Converters Using Switching Modules Solving the Commutation Problem","authors":"C. Petry, J. Fagundes, I. Barbi","doi":"10.1109/ISIE.2006.295748","DOIUrl":"https://doi.org/10.1109/ISIE.2006.295748","url":null,"abstract":"The focus of this paper is the study of direct AC-AC converters, beginning by buck, half-bridge, full-bridge and push-pull converters. From the basic converters we apply a simple methodology to make possible the use of switches in commercial configurations. After that, eight line conditioners were proposed supplying them on the line side or on the load side and the static gain transformer turns ratios were presented. It can be highlighted that some of the studied topologies are known in the literature and others are new. For one of the presented topologies, the design of a 3 kVA line conditioner is developed and experimental results are shown, certifying the correct operation of the drive strategy used","PeriodicalId":296467,"journal":{"name":"2006 IEEE International Symposium on Industrial Electronics","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116738691","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 : 2006-07-09DOI: 10.1109/ISIE.2006.295662
S. Jain, P. Agarwal, H. Gupta
Usually, attempts are made to distribute the load on each phase equally; in practice these loads are not completely balanced. It results in a net current flow through the neutral wire. The problem of neutral current with nonlinear and unbalanced loads is even more severe. This paper presents a fuzzy logic controlled 3-phase 4-wire shunt active power filter, which offers a viable solution for neutral current compensation and load balancing
{"title":"Neutral Current Compensation and Load Balancing With Fuzzy Logic Controlled Active Power Filter","authors":"S. Jain, P. Agarwal, H. Gupta","doi":"10.1109/ISIE.2006.295662","DOIUrl":"https://doi.org/10.1109/ISIE.2006.295662","url":null,"abstract":"Usually, attempts are made to distribute the load on each phase equally; in practice these loads are not completely balanced. It results in a net current flow through the neutral wire. The problem of neutral current with nonlinear and unbalanced loads is even more severe. This paper presents a fuzzy logic controlled 3-phase 4-wire shunt active power filter, which offers a viable solution for neutral current compensation and load balancing","PeriodicalId":296467,"journal":{"name":"2006 IEEE International Symposium on Industrial Electronics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117088479","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 : 2006-07-09DOI: 10.1109/ISIE.2006.295767
A. Lienhardt, G. Gateau, T. Meynard
This paper introduces a new observation strategy of the flying capacitor voltages dedicated to stacked multicell converters (SMC). The proper operation of this particular converter relies on the equal repartition of the voltage constraints over the semiconductors. This objective is achieved providing the capacitor voltages remain constant. The intermediate voltages can be actively controlled so as to ensure this requirement but this procedure necessitates the knowledge of those quantities at each time. It is both difficult and expensive to measure them considering the voltage levels, which motivates the actual research scope. The solution presented in this paper is based on a sliding mode observation of the flying capacitor voltages by means of phase current measurements
{"title":"Stacked Multicell Converter: Sliding Mode Observation of Flying Capacitor Voltages","authors":"A. Lienhardt, G. Gateau, T. Meynard","doi":"10.1109/ISIE.2006.295767","DOIUrl":"https://doi.org/10.1109/ISIE.2006.295767","url":null,"abstract":"This paper introduces a new observation strategy of the flying capacitor voltages dedicated to stacked multicell converters (SMC). The proper operation of this particular converter relies on the equal repartition of the voltage constraints over the semiconductors. This objective is achieved providing the capacitor voltages remain constant. The intermediate voltages can be actively controlled so as to ensure this requirement but this procedure necessitates the knowledge of those quantities at each time. It is both difficult and expensive to measure them considering the voltage levels, which motivates the actual research scope. The solution presented in this paper is based on a sliding mode observation of the flying capacitor voltages by means of phase current measurements","PeriodicalId":296467,"journal":{"name":"2006 IEEE International Symposium on Industrial Electronics","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128445734","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 : 2006-07-09DOI: 10.1109/ISIE.2006.295990
W. Hofbauer, P. Dolovai, H. Joergl, J. Hirzinger
The dynamics of a gas engine vary strongly over its power range with controlled engine speed. The major nonlinearities result from the turbo charger driven by exhaust gas. The recirculation valve adjusts the power of the turbo charger, by leading part of the compressed mixture back to the inlet. The position of the throttle valve affects the mass flow into the engine. Both actuators are used to control the engine speed. In order to optimize the switching between the actuators, LQG control is applied. For linear state feedback control suitable states have to be determined and unmeasured states must be estimated in an acceptable way. This paper shows that LQG control is able to enhance the performance of the engine speed control by using both actuators simultaneously.
{"title":"LQG/LTR Controller Design for a Gas Engine","authors":"W. Hofbauer, P. Dolovai, H. Joergl, J. Hirzinger","doi":"10.1109/ISIE.2006.295990","DOIUrl":"https://doi.org/10.1109/ISIE.2006.295990","url":null,"abstract":"The dynamics of a gas engine vary strongly over its power range with controlled engine speed. The major nonlinearities result from the turbo charger driven by exhaust gas. The recirculation valve adjusts the power of the turbo charger, by leading part of the compressed mixture back to the inlet. The position of the throttle valve affects the mass flow into the engine. Both actuators are used to control the engine speed. In order to optimize the switching between the actuators, LQG control is applied. For linear state feedback control suitable states have to be determined and unmeasured states must be estimated in an acceptable way. This paper shows that LQG control is able to enhance the performance of the engine speed control by using both actuators simultaneously.","PeriodicalId":296467,"journal":{"name":"2006 IEEE International Symposium on Industrial Electronics","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128452873","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 : 2006-07-09DOI: 10.1109/ISIE.2006.295714
E. Tremblay, A. Chandra, P. Lagacé, R. Gagnon
A doubly fed induction generator wind turbine (DFIG-WT) under unbalanced load condition is presented. It is demonstrated that the grid-side converter can supports the grid under unbalanced load conditions as well as provide power factor correction without disturbing the DFIG-WT. The controller is based on symmetrical components and a vector control scheme. With the grid-side converter, power compensation support can be done at a specific point away from the wind turbine plant. The system is fully operational at zero output power from the DFIG-WT and independent of the rotor-side control strategy. Simulation results illustrate good performance of the proposed system
{"title":"Study of Grid-Side Converter Control for Grid-Connected DFIG Wind Turbines under Unbalanced Load Condition","authors":"E. Tremblay, A. Chandra, P. Lagacé, R. Gagnon","doi":"10.1109/ISIE.2006.295714","DOIUrl":"https://doi.org/10.1109/ISIE.2006.295714","url":null,"abstract":"A doubly fed induction generator wind turbine (DFIG-WT) under unbalanced load condition is presented. It is demonstrated that the grid-side converter can supports the grid under unbalanced load conditions as well as provide power factor correction without disturbing the DFIG-WT. The controller is based on symmetrical components and a vector control scheme. With the grid-side converter, power compensation support can be done at a specific point away from the wind turbine plant. The system is fully operational at zero output power from the DFIG-WT and independent of the rotor-side control strategy. Simulation results illustrate good performance of the proposed system","PeriodicalId":296467,"journal":{"name":"2006 IEEE International Symposium on Industrial Electronics","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128788369","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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