Pub Date : 2008-06-11DOI: 10.1109/SPEEDHAM.2008.4581154
A. Câmpeanu, A. Ionescu, I. Vlad, S. Enache
In this paper one uses the theory developed by A.Campeanu (1995) to simulate the operation of induction machine in complex dynamic processes. On this basis one can determine in detail the transient behavior of induction machine and some of the factors which condition the operation. The results are useful in the design stage of induction machine which has to operate in prescribed complex dynamic regimes.
{"title":"Prediction through simulation of the optimal behavior of the induction machine in complex process","authors":"A. Câmpeanu, A. Ionescu, I. Vlad, S. Enache","doi":"10.1109/SPEEDHAM.2008.4581154","DOIUrl":"https://doi.org/10.1109/SPEEDHAM.2008.4581154","url":null,"abstract":"In this paper one uses the theory developed by A.Campeanu (1995) to simulate the operation of induction machine in complex dynamic processes. On this basis one can determine in detail the transient behavior of induction machine and some of the factors which condition the operation. The results are useful in the design stage of induction machine which has to operate in prescribed complex dynamic regimes.","PeriodicalId":345557,"journal":{"name":"2008 International Symposium on Power Electronics, Electrical Drives, Automation and Motion","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123749118","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 : 2008-06-11DOI: 10.1109/SPEEDHAM.2008.4581096
T. Kasmieh
The paper presents a new stator flux estimator for the induction machine Direct Torque Control (DTC). The study aims to develop an estimator which gives good stator flux feedback values even when the stator resistor varies with the machine temperature. In DTC algorithm, stator electric equation is usually used to calculate the stator flux error. The value of this error is used with the torque error to determine the optimal voltage space vector that gives a simultaneous changing of the torque and the flux in the desired direction. The accuracy of the DTC depends on the proper calculation of the stator flux. The main objective is to build a stator flux estimator depending on the rotor electric equation. Since the time response of the rotor flux is bigger than the time response of the stator flux, this new estimator is less sensitive to the variation of the rotor resistor. The behaviour of the developed estimator is enhanced in an adaptive way to take into account the variation of the saturation level in the air gap of the induction machine.
{"title":"Adaptive stator flux estimator for the induction machine Direct Torque Control","authors":"T. Kasmieh","doi":"10.1109/SPEEDHAM.2008.4581096","DOIUrl":"https://doi.org/10.1109/SPEEDHAM.2008.4581096","url":null,"abstract":"The paper presents a new stator flux estimator for the induction machine Direct Torque Control (DTC). The study aims to develop an estimator which gives good stator flux feedback values even when the stator resistor varies with the machine temperature. In DTC algorithm, stator electric equation is usually used to calculate the stator flux error. The value of this error is used with the torque error to determine the optimal voltage space vector that gives a simultaneous changing of the torque and the flux in the desired direction. The accuracy of the DTC depends on the proper calculation of the stator flux. The main objective is to build a stator flux estimator depending on the rotor electric equation. Since the time response of the rotor flux is bigger than the time response of the stator flux, this new estimator is less sensitive to the variation of the rotor resistor. The behaviour of the developed estimator is enhanced in an adaptive way to take into account the variation of the saturation level in the air gap of the induction machine.","PeriodicalId":345557,"journal":{"name":"2008 International Symposium on Power Electronics, Electrical Drives, Automation and Motion","volume":"137 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124297333","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 : 2008-06-11DOI: 10.1109/SPEEDHAM.2008.4581268
Jong Kwan Park, K. Cho, W. Oh, K. Sol, Chigak In
The dead time which is inserted in switching signals of PWM voltage source inverters distorts its output. As a result, the deviations of real fundamental voltage and phase compared with the reference are occurred. And also the harmonics of its output are increased. In this paper, numerical analysis of the error voltage on the output of inverter according to the switching dead time is presented. And the calculation results of fundamental voltage gain and phase deviations are presented.
{"title":"Analysis of the errors on the output voltage of inverter caused by switching dead times","authors":"Jong Kwan Park, K. Cho, W. Oh, K. Sol, Chigak In","doi":"10.1109/SPEEDHAM.2008.4581268","DOIUrl":"https://doi.org/10.1109/SPEEDHAM.2008.4581268","url":null,"abstract":"The dead time which is inserted in switching signals of PWM voltage source inverters distorts its output. As a result, the deviations of real fundamental voltage and phase compared with the reference are occurred. And also the harmonics of its output are increased. In this paper, numerical analysis of the error voltage on the output of inverter according to the switching dead time is presented. And the calculation results of fundamental voltage gain and phase deviations are presented.","PeriodicalId":345557,"journal":{"name":"2008 International Symposium on Power Electronics, Electrical Drives, Automation and Motion","volume":"100 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121362433","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 : 2008-06-11DOI: 10.1109/SPEEDHAM.2008.4581323
M. Miyatake, K. Matsuda
The optimal operation of rail vehicle minimizing total energy consumption is discussed in this paper. Many works on the application of the energy storage devices to trains were reported, however, they did not deal enough with the optimality of the control of the devices. The authors have developed the mathematical model based on a general optimization technique, Sequential Quadratic Programming. The proposed method can determine the optimal acceleration/deceleration and current commands at every sampling point under fixed conditions of transfer time and distance. Using the proposed method, simulations were implemented in some cases. The electric double layer capacitor (EDLC) is assumed as an energy storage device in our study, because of its high power density etc. The trend of optimal solutions such as values of control inputs and energy consumption is finally discussed.
{"title":"Optimal speed and charge/discharge control of a train with onboard energy storage devices for minimum energy operation","authors":"M. Miyatake, K. Matsuda","doi":"10.1109/SPEEDHAM.2008.4581323","DOIUrl":"https://doi.org/10.1109/SPEEDHAM.2008.4581323","url":null,"abstract":"The optimal operation of rail vehicle minimizing total energy consumption is discussed in this paper. Many works on the application of the energy storage devices to trains were reported, however, they did not deal enough with the optimality of the control of the devices. The authors have developed the mathematical model based on a general optimization technique, Sequential Quadratic Programming. The proposed method can determine the optimal acceleration/deceleration and current commands at every sampling point under fixed conditions of transfer time and distance. Using the proposed method, simulations were implemented in some cases. The electric double layer capacitor (EDLC) is assumed as an energy storage device in our study, because of its high power density etc. The trend of optimal solutions such as values of control inputs and energy consumption is finally discussed.","PeriodicalId":345557,"journal":{"name":"2008 International Symposium on Power Electronics, Electrical Drives, Automation and Motion","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121600902","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 : 2008-06-11DOI: 10.1109/SPEEDHAM.2008.4581263
E. Babaei, Seyed Hossein Hosseini
In this paper, a new topology of cascaded multilevel converter using a reduced number of insulated gate driver circuits and voltage standing on switches is proposed. The proposed topology results in reduction of installation area and cost and has simplicity of control system. This structure consists of series connected sub-multilevel converters blocks. Three algorithms for determination of dc voltage source magnitudes have been presented, too. The validity of the analysis results has been proved by experimental results.
{"title":"New multilevel converter topology with minimum number of gate driver circuits","authors":"E. Babaei, Seyed Hossein Hosseini","doi":"10.1109/SPEEDHAM.2008.4581263","DOIUrl":"https://doi.org/10.1109/SPEEDHAM.2008.4581263","url":null,"abstract":"In this paper, a new topology of cascaded multilevel converter using a reduced number of insulated gate driver circuits and voltage standing on switches is proposed. The proposed topology results in reduction of installation area and cost and has simplicity of control system. This structure consists of series connected sub-multilevel converters blocks. Three algorithms for determination of dc voltage source magnitudes have been presented, too. The validity of the analysis results has been proved by experimental results.","PeriodicalId":345557,"journal":{"name":"2008 International Symposium on Power Electronics, Electrical Drives, Automation and Motion","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121586012","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 : 2008-06-11DOI: 10.1109/SPEEDHAM.2008.4581238
D. Vinnikov, M. Lehtla
This paper discusses the half- and full-bridge DC/DC converter topologies for high-power (200 kW) high-voltage (3.6 kV) applications. Focus is on the primary part of these topologies, i.e. the feasibility of two high-voltage IGBTs replacement in the full-bridge by two high-voltage film capacitors in the half-bridge.
{"title":"Feasibility study of 200 kW half-bridge and full-bridge DC/DC converters with 6.5 kV IGBTs","authors":"D. Vinnikov, M. Lehtla","doi":"10.1109/SPEEDHAM.2008.4581238","DOIUrl":"https://doi.org/10.1109/SPEEDHAM.2008.4581238","url":null,"abstract":"This paper discusses the half- and full-bridge DC/DC converter topologies for high-power (200 kW) high-voltage (3.6 kV) applications. Focus is on the primary part of these topologies, i.e. the feasibility of two high-voltage IGBTs replacement in the full-bridge by two high-voltage film capacitors in the half-bridge.","PeriodicalId":345557,"journal":{"name":"2008 International Symposium on Power Electronics, Electrical Drives, Automation and Motion","volume":"102 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128602557","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 : 2008-06-11DOI: 10.1109/SPEEDHAM.2008.4581079
C. Nica, M. Enache
The equivalent scheme of low power permanent magnet synchronous motors is established in this paper. There is emphasized the influence of the command quantities, of the excitation degree, of the electrical parameters value and of the load magnitude on the operation characteristics of low power synchronous motors. Thus, several families of curves are plotted for emphasizing these influences.
{"title":"About operation characteristics of low power synchronous motors at frequency command","authors":"C. Nica, M. Enache","doi":"10.1109/SPEEDHAM.2008.4581079","DOIUrl":"https://doi.org/10.1109/SPEEDHAM.2008.4581079","url":null,"abstract":"The equivalent scheme of low power permanent magnet synchronous motors is established in this paper. There is emphasized the influence of the command quantities, of the excitation degree, of the electrical parameters value and of the load magnitude on the operation characteristics of low power synchronous motors. Thus, several families of curves are plotted for emphasizing these influences.","PeriodicalId":345557,"journal":{"name":"2008 International Symposium on Power Electronics, Electrical Drives, Automation and Motion","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128312750","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 : 2008-06-11DOI: 10.1109/SPEEDHAM.2008.4581228
F. Kurokawa, S. Sukita
We have already reported the novel digital control method ldquostatic model referencerdquo which is the improved smart digital reference of output voltage. However, prior attempts to improve the transient response have been inconclusive because this model depends on the steady-state analysis. This paper presents a new model control method of the switching dc-dc converter using both the static and dynamic functions to improve the dynamic characteristics. Furthermore, the relationship between the parameters of control circuit and the dynamic characteristics is discussed. As a result, it is seen that the DC-DC converter with a new model control has a superior transient response compared with that of the conventional control. Especially, the overshoot of the reactor current is suppressed to within 34% and this result is approximately 30% smaller than that of the conventional ldquostatic model referencerdquo control.
{"title":"Improvement of dynamic characteristics of digitally controlled DC-DC converter","authors":"F. Kurokawa, S. Sukita","doi":"10.1109/SPEEDHAM.2008.4581228","DOIUrl":"https://doi.org/10.1109/SPEEDHAM.2008.4581228","url":null,"abstract":"We have already reported the novel digital control method ldquostatic model referencerdquo which is the improved smart digital reference of output voltage. However, prior attempts to improve the transient response have been inconclusive because this model depends on the steady-state analysis. This paper presents a new model control method of the switching dc-dc converter using both the static and dynamic functions to improve the dynamic characteristics. Furthermore, the relationship between the parameters of control circuit and the dynamic characteristics is discussed. As a result, it is seen that the DC-DC converter with a new model control has a superior transient response compared with that of the conventional control. Especially, the overshoot of the reactor current is suppressed to within 34% and this result is approximately 30% smaller than that of the conventional ldquostatic model referencerdquo control.","PeriodicalId":345557,"journal":{"name":"2008 International Symposium on Power Electronics, Electrical Drives, Automation and Motion","volume":"89 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130513594","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 : 2008-06-11DOI: 10.1109/SPEEDHAM.2008.4581179
K. Reichert
This article discusses about the use of finite-element methods for the calculation of electromagnetic fields in electrical machines and for the determination of machines parameters and characteristics. The solutions offered can be classified as follows: steady state simulation, frequency domain simulation, time domain modeling and simulation, coupled electro-magnetic and thermal problems.
{"title":"Steady-state finite-element methods to permanent magnet motor characteristics determination","authors":"K. Reichert","doi":"10.1109/SPEEDHAM.2008.4581179","DOIUrl":"https://doi.org/10.1109/SPEEDHAM.2008.4581179","url":null,"abstract":"This article discusses about the use of finite-element methods for the calculation of electromagnetic fields in electrical machines and for the determination of machines parameters and characteristics. The solutions offered can be classified as follows: steady state simulation, frequency domain simulation, time domain modeling and simulation, coupled electro-magnetic and thermal problems.","PeriodicalId":345557,"journal":{"name":"2008 International Symposium on Power Electronics, Electrical Drives, Automation and Motion","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130614787","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 : 2008-06-11DOI: 10.1109/SPEEDHAM.2008.4581276
M. Dobriceanu, A. Bitoleanu, M. Popescu, E. Subţirelu, S. Enache
The paper illustrates the electrical stations of medium voltage in which there is going to be implemented an automated multivariable system, based of software packages for data acquisition, storing, data transmission, processing, monitoring, analysis and which to allow the monitoring of a large number of parameters. The purpose of the local data acquisition, protection and control equipment and of the monitoring system is to befriend the human factor in taking optimal decisions in the plan of monitoring the quality of electrical energy in distribution stations, by offering adequate information in a format specific to the function and work place.
{"title":"Combined protection and control equipment for applications in the medium-voltage area","authors":"M. Dobriceanu, A. Bitoleanu, M. Popescu, E. Subţirelu, S. Enache","doi":"10.1109/SPEEDHAM.2008.4581276","DOIUrl":"https://doi.org/10.1109/SPEEDHAM.2008.4581276","url":null,"abstract":"The paper illustrates the electrical stations of medium voltage in which there is going to be implemented an automated multivariable system, based of software packages for data acquisition, storing, data transmission, processing, monitoring, analysis and which to allow the monitoring of a large number of parameters. The purpose of the local data acquisition, protection and control equipment and of the monitoring system is to befriend the human factor in taking optimal decisions in the plan of monitoring the quality of electrical energy in distribution stations, by offering adequate information in a format specific to the function and work place.","PeriodicalId":345557,"journal":{"name":"2008 International Symposium on Power Electronics, Electrical Drives, Automation and Motion","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130283618","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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