Pub Date : 2006-08-01DOI: 10.1109/EPEPEMC.2006.4778489
M. Pronin, A. Vorontsov
There are sizeable pulsations in system with multi-phase electrical machines and PWM converters. They are increased under reduction winding pitch and decreased under using of multi-stage and multi-level converters and multi-phase paralleling reactors. Use of multi-stage convert-ers allows appreciably to decrease current load of capacitors in DC link.
{"title":"Dependence of Current Pulsations of Multi-Phase Electrical Machine on Reduction of Winding Pitch and Scheme of Semiconductor Converter","authors":"M. Pronin, A. Vorontsov","doi":"10.1109/EPEPEMC.2006.4778489","DOIUrl":"https://doi.org/10.1109/EPEPEMC.2006.4778489","url":null,"abstract":"There are sizeable pulsations in system with multi-phase electrical machines and PWM converters. They are increased under reduction winding pitch and decreased under using of multi-stage and multi-level converters and multi-phase paralleling reactors. Use of multi-stage convert-ers allows appreciably to decrease current load of capacitors in DC link.","PeriodicalId":401288,"journal":{"name":"2006 12th International Power Electronics and Motion Control Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123416177","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 : 2006-08-01DOI: 10.1109/EPEPEMC.2006.4778401
Hitomi Matsue, T. Takeshita
This paper presents the input current control scheme of three-phase PWM converters to realize the unity effective power factor and the stable output dc voltage for the rectangular-waveform distribution system. The input current control is based on the discrete-time system. The authors propose the fast control scheme of the input current under the voltage saturation of the PWM converter. The effectiveness of the proposed current control scheme has been verified by experiments.
{"title":"Fast Current Control of Three-Phase PWM Converter for Rectangular-Waveform Distribution System","authors":"Hitomi Matsue, T. Takeshita","doi":"10.1109/EPEPEMC.2006.4778401","DOIUrl":"https://doi.org/10.1109/EPEPEMC.2006.4778401","url":null,"abstract":"This paper presents the input current control scheme of three-phase PWM converters to realize the unity effective power factor and the stable output dc voltage for the rectangular-waveform distribution system. The input current control is based on the discrete-time system. The authors propose the fast control scheme of the input current under the voltage saturation of the PWM converter. The effectiveness of the proposed current control scheme has been verified by experiments.","PeriodicalId":401288,"journal":{"name":"2006 12th International Power Electronics and Motion Control Conference","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124851853","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 : 2006-08-01DOI: 10.1109/EPEPEMC.2006.4778546
Mohamed Nasr Khoidja, Boujemaa Salah, Pascal Brochet
This paper describes a hybrid fuzzy-conventional control technique of a linear induction motor. This technique, based on the use of the vector control method associated to a choice of combined analogical and fuzzy controllers, is proposed to ameliorate the dynamics of the secondary flux and the thrust force. The results of the numeric simulation are also presented and discussed
{"title":"Vector Control Hybrid Fuzzy-Conventional for a Linear Induction Motor","authors":"Mohamed Nasr Khoidja, Boujemaa Salah, Pascal Brochet","doi":"10.1109/EPEPEMC.2006.4778546","DOIUrl":"https://doi.org/10.1109/EPEPEMC.2006.4778546","url":null,"abstract":"This paper describes a hybrid fuzzy-conventional control technique of a linear induction motor. This technique, based on the use of the vector control method associated to a choice of combined analogical and fuzzy controllers, is proposed to ameliorate the dynamics of the secondary flux and the thrust force. The results of the numeric simulation are also presented and discussed","PeriodicalId":401288,"journal":{"name":"2006 12th International Power Electronics and Motion Control Conference","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123963178","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 : 2006-08-01DOI: 10.1109/EPEPEMC.2006.4778397
E. Christopher, M. Sumner
This paper presents a new method to balance the DC link voltages in a 3 level Diode Clamped Rectifier, even in the presence of unbalanced loads which cause a non-zero neutral point current. The method employs an offset which is added to each of the inverter modulation waves. This offset causes a zero sequence voltage which can drive the desired neutral point current whilst maintaining balanced DC link voltages. Simulation and experimental results confirm the method.
{"title":"Voltage Balance Control for a Multilevel Interface for Renewable Energy Systems","authors":"E. Christopher, M. Sumner","doi":"10.1109/EPEPEMC.2006.4778397","DOIUrl":"https://doi.org/10.1109/EPEPEMC.2006.4778397","url":null,"abstract":"This paper presents a new method to balance the DC link voltages in a 3 level Diode Clamped Rectifier, even in the presence of unbalanced loads which cause a non-zero neutral point current. The method employs an offset which is added to each of the inverter modulation waves. This offset causes a zero sequence voltage which can drive the desired neutral point current whilst maintaining balanced DC link voltages. Simulation and experimental results confirm the method.","PeriodicalId":401288,"journal":{"name":"2006 12th International Power Electronics and Motion Control Conference","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126148460","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 : 2006-08-01DOI: 10.1109/EPEPEMC.2006.4778443
Hung-I Hsieh, T. Lin, Dan Y. Chen
In a two-wire (no chassis ground) input off-line power supply system, a capacitor is often connected between the primary and the secondary side of the transformer for common-mode EMI reduction. For a three-wire off-line power supplies, such a capacitor, is also used sometime for the same purpose. It's unclear how this capacitor works. In this paper, explanation of the noise suppression mechanism and effectiveness of such a capacitor is given. From the understanding of the mechanism, suggestions were made for the use of such a capacitor and output inductor placement to avoid the pitfalls and achieve desirable effects.
{"title":"Use of a Cz Common-Mode Capacitor in 2-wire and 3-wire Off-line Power Supplies","authors":"Hung-I Hsieh, T. Lin, Dan Y. Chen","doi":"10.1109/EPEPEMC.2006.4778443","DOIUrl":"https://doi.org/10.1109/EPEPEMC.2006.4778443","url":null,"abstract":"In a two-wire (no chassis ground) input off-line power supply system, a capacitor is often connected between the primary and the secondary side of the transformer for common-mode EMI reduction. For a three-wire off-line power supplies, such a capacitor, is also used sometime for the same purpose. It's unclear how this capacitor works. In this paper, explanation of the noise suppression mechanism and effectiveness of such a capacitor is given. From the understanding of the mechanism, suggestions were made for the use of such a capacitor and output inductor placement to avoid the pitfalls and achieve desirable effects.","PeriodicalId":401288,"journal":{"name":"2006 12th International Power Electronics and Motion Control Conference","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126001259","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 : 2006-08-01DOI: 10.1109/EPEPEMC.2006.4778408
P. Cortes, José R. Rodríguez, D. Quevedo, César A. Silva
A modified predictive current control strategy is presented in order to have control over the spectrum of the load current. The proposed strategy uses a model of the system to predict the behavior of the current for each possible voltage vector generated by the inverter. For that purpose, at each sampling interval, signal predictions are evaluated using a cost function that quantifies the desired system behavior. The cost function used in this work evaluates the filtered error of the load currents. The inclusion of a filter for the load error allows one to manipulate current spectra. Thus, by designing this filter appropriately, the load spectrum can be shaped.
{"title":"Predictive Current Control Strategy with Imposed Load Current Spectrum","authors":"P. Cortes, José R. Rodríguez, D. Quevedo, César A. Silva","doi":"10.1109/EPEPEMC.2006.4778408","DOIUrl":"https://doi.org/10.1109/EPEPEMC.2006.4778408","url":null,"abstract":"A modified predictive current control strategy is presented in order to have control over the spectrum of the load current. The proposed strategy uses a model of the system to predict the behavior of the current for each possible voltage vector generated by the inverter. For that purpose, at each sampling interval, signal predictions are evaluated using a cost function that quantifies the desired system behavior. The cost function used in this work evaluates the filtered error of the load currents. The inclusion of a filter for the load error allows one to manipulate current spectra. Thus, by designing this filter appropriately, the load spectrum can be shaped.","PeriodicalId":401288,"journal":{"name":"2006 12th International Power Electronics and Motion Control Conference","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130179364","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 : 2006-08-01DOI: 10.1109/EPEPEMC.2006.4778501
A. Sokolovs, I. Galkin, O. Krievs, J. Laugis
Simulation strategies for a classical three phase matrix converter are presented in this paper. A simple control method, which can be realized on the basis of the table functions and elementary calculation algorithms, is described. Both - MATLAB and more detailed schematic simulation in PSpice environment are covered. The simulation results have confirmed the validity of the proposed control method
{"title":"Simulation Methods for 3x3 Matrix Converter","authors":"A. Sokolovs, I. Galkin, O. Krievs, J. Laugis","doi":"10.1109/EPEPEMC.2006.4778501","DOIUrl":"https://doi.org/10.1109/EPEPEMC.2006.4778501","url":null,"abstract":"Simulation strategies for a classical three phase matrix converter are presented in this paper. A simple control method, which can be realized on the basis of the table functions and elementary calculation algorithms, is described. Both - MATLAB and more detailed schematic simulation in PSpice environment are covered. The simulation results have confirmed the validity of the proposed control method","PeriodicalId":401288,"journal":{"name":"2006 12th International Power Electronics and Motion Control Conference","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129604090","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 : 2006-08-01DOI: 10.1109/EPEPEMC.2006.4778381
F. Renken
For reduction of the switching power losses developer of three-phase inverters thinks increasingly about discontinuous modulation strategies. This applies in particular for high power inverters such as for starter generator - or hybrid drive systems. The dc-link current of these discontinuous modulated voltage source inverter are analyzed in this paper. First the dc- and the rms-current of the dc-link circuit are calculated depending on the phase shift angle and the modulation factor. Afterwards the current harmonics of the dc-link circuit for a defined phase shift angle and modulation factor are determined. The calculations are verified by several circuit simulations.
{"title":"Analyses of the DC-Link Current in Discontinuous Modulated Three-Phase Inverters","authors":"F. Renken","doi":"10.1109/EPEPEMC.2006.4778381","DOIUrl":"https://doi.org/10.1109/EPEPEMC.2006.4778381","url":null,"abstract":"For reduction of the switching power losses developer of three-phase inverters thinks increasingly about discontinuous modulation strategies. This applies in particular for high power inverters such as for starter generator - or hybrid drive systems. The dc-link current of these discontinuous modulated voltage source inverter are analyzed in this paper. First the dc- and the rms-current of the dc-link circuit are calculated depending on the phase shift angle and the modulation factor. Afterwards the current harmonics of the dc-link circuit for a defined phase shift angle and modulation factor are determined. The calculations are verified by several circuit simulations.","PeriodicalId":401288,"journal":{"name":"2006 12th International Power Electronics and Motion Control Conference","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128033279","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 : 2006-08-01DOI: 10.1109/EPEPEMC.2006.4778503
G. Grandi, G. Serra, A. Tani
In this paper the space vector approach is applied to the analysis of multi-phase electric systems. This approach builds on an existing but non systematic knowledge base, partially available in literature. In particular, power and RMS are expressed in terms of space vectors, and a comparison is carried out with respect to the Fortescue's symmetrical components in the case of n-phase circuits with sinusoidal waveforms. The use of space vectors allows real time analysis and regulation of both multi-phase converters and multi-phase machines with an elegant and effective vectorial approach.
{"title":"General Analysis of Multi-Phase Systems Based on Space Vector Approach","authors":"G. Grandi, G. Serra, A. Tani","doi":"10.1109/EPEPEMC.2006.4778503","DOIUrl":"https://doi.org/10.1109/EPEPEMC.2006.4778503","url":null,"abstract":"In this paper the space vector approach is applied to the analysis of multi-phase electric systems. This approach builds on an existing but non systematic knowledge base, partially available in literature. In particular, power and RMS are expressed in terms of space vectors, and a comparison is carried out with respect to the Fortescue's symmetrical components in the case of n-phase circuits with sinusoidal waveforms. The use of space vectors allows real time analysis and regulation of both multi-phase converters and multi-phase machines with an elegant and effective vectorial approach.","PeriodicalId":401288,"journal":{"name":"2006 12th International Power Electronics and Motion Control Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130845697","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 : 2006-08-01DOI: 10.1109/EPEPEMC.2006.4778519
Shan Xue, X. Wen, Zhao Feng
Multiphase motor drives are multi-dimensional systems, so multiphase SVPWM must be implemented in a multi-dimensional vector space to satisfy motor's control requirements. In this paper, a novel multi-dimensional multiphase SVPWM strategy, which could synthesize the required voltage vectors not only in d-q subspace but also in other subspaces, is presented. Therefore, this strategy can control all voltage and current harmonics which contribute to the torque positively. Throughout this paper, a five-phase permanent motor drive system is developed as an example, and simulation and experimental results verify the validity of the proposed method. For the purpose of comparison, conventional SVPWM is also tested.
{"title":"A Novel Multi-Dimensional SVPWM Strategy of Multiphase Motor Drives","authors":"Shan Xue, X. Wen, Zhao Feng","doi":"10.1109/EPEPEMC.2006.4778519","DOIUrl":"https://doi.org/10.1109/EPEPEMC.2006.4778519","url":null,"abstract":"Multiphase motor drives are multi-dimensional systems, so multiphase SVPWM must be implemented in a multi-dimensional vector space to satisfy motor's control requirements. In this paper, a novel multi-dimensional multiphase SVPWM strategy, which could synthesize the required voltage vectors not only in d-q subspace but also in other subspaces, is presented. Therefore, this strategy can control all voltage and current harmonics which contribute to the torque positively. Throughout this paper, a five-phase permanent motor drive system is developed as an example, and simulation and experimental results verify the validity of the proposed method. For the purpose of comparison, conventional SVPWM is also tested.","PeriodicalId":401288,"journal":{"name":"2006 12th International Power Electronics and Motion Control Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131142620","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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