Pub Date : 2009-05-12DOI: 10.1109/POWERENG.2009.4915208
Y. Ounejjar, K. Al-haddad, Luc-André Grégoire
In this paper, authors propose an advanced five level rectifier which results from a series connection of two three level rectifiers. A topological optimization of this configuration leads to the proposed topology characterized by the use of only six power switches per phase. Modeling, modulation and control technique of the proposed rectifier are performed in order to draw a nearly sinusoidal lines currents and line-to-line voltages. A method for balancing DC link output voltages is also proposed in order to protect loads, passives and actives power devices. The proposed three phase five level rectifier with its control and balancing technique were verified by simulation.
{"title":"An advanced three phase five level PWM rectifier","authors":"Y. Ounejjar, K. Al-haddad, Luc-André Grégoire","doi":"10.1109/POWERENG.2009.4915208","DOIUrl":"https://doi.org/10.1109/POWERENG.2009.4915208","url":null,"abstract":"In this paper, authors propose an advanced five level rectifier which results from a series connection of two three level rectifiers. A topological optimization of this configuration leads to the proposed topology characterized by the use of only six power switches per phase. Modeling, modulation and control technique of the proposed rectifier are performed in order to draw a nearly sinusoidal lines currents and line-to-line voltages. A method for balancing DC link output voltages is also proposed in order to protect loads, passives and actives power devices. The proposed three phase five level rectifier with its control and balancing technique were verified by simulation.","PeriodicalId":246039,"journal":{"name":"2009 International Conference on Power Engineering, Energy and Electrical Drives","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128667311","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 : 2009-03-18DOI: 10.1109/POWERENG.2009.4915146
Bahman Khaki, B. Mozafari
In this paper the effects of suitable adjustment of power system controllers including AVR, PSS, and FACT devices on the stability of power system are illustrated. The analysis is base on bifurcation theory, small signal stability evaluation and time domain simulations. A new and efficient procedure is proposed to increase voltage stability margin and to overcome oscillatory instability by adopting appropriate parameter values within plausible range for the system controllers. Effect of SVC and TCSC devices on system performance are considered and compared in detail. At first, the stability of the test system without FACT devices is investigated. Then, static and dynamic analyses are repeated for the system including SVC and TCSC devices, with optimal placement algorithms . multi-parameter bifurcation analysis is presented to study the effect of system parameters on the Hopf and saddle node bifurcations, and to achieve the best controller parameters values to prevent oscillatory voltage instability in the system .
{"title":"Efficient system parameter selection to prevent oscillatory voltage instability","authors":"Bahman Khaki, B. Mozafari","doi":"10.1109/POWERENG.2009.4915146","DOIUrl":"https://doi.org/10.1109/POWERENG.2009.4915146","url":null,"abstract":"In this paper the effects of suitable adjustment of power system controllers including AVR, PSS, and FACT devices on the stability of power system are illustrated. The analysis is base on bifurcation theory, small signal stability evaluation and time domain simulations. A new and efficient procedure is proposed to increase voltage stability margin and to overcome oscillatory instability by adopting appropriate parameter values within plausible range for the system controllers. Effect of SVC and TCSC devices on system performance are considered and compared in detail. At first, the stability of the test system without FACT devices is investigated. Then, static and dynamic analyses are repeated for the system including SVC and TCSC devices, with optimal placement algorithms . multi-parameter bifurcation analysis is presented to study the effect of system parameters on the Hopf and saddle node bifurcations, and to achieve the best controller parameters values to prevent oscillatory voltage instability in the system .","PeriodicalId":246039,"journal":{"name":"2009 International Conference on Power Engineering, Energy and Electrical Drives","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114650652","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 : 2009-03-18DOI: 10.1109/POWERENG.2009.4915258
J. Martins, V. Fernão Pires, L. Gomes, O. Páscoa Dias
Commercial office buildings with renewable energies are becoming more important in the actual context. That integration cannot be seen isolated from the strategic transport planning. Under this context this paper presents an office facility, equipped with renewable energy sources, where the users can recharge their plug-in electric vehicles, using the available renewable power. The system controller is composed by a network of distributed local controllers interconnected to a server. This system manages the power transfer between the building and the parked electric cars, including full discharge battery procedures. An important feature of the system is that it manages the energy consumption of each user, and assigns the respective costs to the correspondent company.
{"title":"Plug-in electric vehicles integration with renewable energy building facility - building/vehicle interface","authors":"J. Martins, V. Fernão Pires, L. Gomes, O. Páscoa Dias","doi":"10.1109/POWERENG.2009.4915258","DOIUrl":"https://doi.org/10.1109/POWERENG.2009.4915258","url":null,"abstract":"Commercial office buildings with renewable energies are becoming more important in the actual context. That integration cannot be seen isolated from the strategic transport planning. Under this context this paper presents an office facility, equipped with renewable energy sources, where the users can recharge their plug-in electric vehicles, using the available renewable power. The system controller is composed by a network of distributed local controllers interconnected to a server. This system manages the power transfer between the building and the parked electric cars, including full discharge battery procedures. An important feature of the system is that it manages the energy consumption of each user, and assigns the respective costs to the correspondent company.","PeriodicalId":246039,"journal":{"name":"2009 International Conference on Power Engineering, Energy and Electrical Drives","volume":"208 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122514266","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 : 2009-03-18DOI: 10.1109/POWERENG.2009.4915175
A. Roque, D. Sousa, C. Casimiro
Nowadays, the technical decisions related with all kind of vehicles join several aspects such, for instance, environmental concerns or energy save.
如今，与各种车辆相关的技术决策涉及多个方面，例如环境问题或节能问题。
{"title":"Camping car with self power generation","authors":"A. Roque, D. Sousa, C. Casimiro","doi":"10.1109/POWERENG.2009.4915175","DOIUrl":"https://doi.org/10.1109/POWERENG.2009.4915175","url":null,"abstract":"Nowadays, the technical decisions related with all kind of vehicles join several aspects such, for instance, environmental concerns or energy save.","PeriodicalId":246039,"journal":{"name":"2009 International Conference on Power Engineering, Energy and Electrical Drives","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128569646","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 : 2009-03-18DOI: 10.1109/POWERENG.2009.4915149
S. Sousa, V.M.E. Antunes, V. Pires, J. F. Silva
In this paper is proposed the implementation of a novel structure for a Class D amplifier based on a robust closed loop control. The proposed control it is based on a multi level sliding mode controller. This allows of being able to converge to a stable status in spite of unknown or nonlinear elements present in the amplifier. The methods and systems proposed are also described. Several simulation results are presented. The obtained results confirm the potential of this configuration, as it is shown in the last part of this paper.
{"title":"Implementation of a new structure for a closed-loop Class D amplifier","authors":"S. Sousa, V.M.E. Antunes, V. Pires, J. F. Silva","doi":"10.1109/POWERENG.2009.4915149","DOIUrl":"https://doi.org/10.1109/POWERENG.2009.4915149","url":null,"abstract":"In this paper is proposed the implementation of a novel structure for a Class D amplifier based on a robust closed loop control. The proposed control it is based on a multi level sliding mode controller. This allows of being able to converge to a stable status in spite of unknown or nonlinear elements present in the amplifier. The methods and systems proposed are also described. Several simulation results are presented. The obtained results confirm the potential of this configuration, as it is shown in the last part of this paper.","PeriodicalId":246039,"journal":{"name":"2009 International Conference on Power Engineering, Energy and Electrical Drives","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129287613","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 : 2009-03-18DOI: 10.1109/POWERENG.2009.4915216
N. Olarescu, M. Weinmann, S. Zeh, S. Musuroi
This paper proposes a novel algorithm to generate the optimum d- and q-axis current reference for the drive system of PMSMS (permanent magnet synchronous motor with sinusoidal excitation) in the entire flux weakening region and also to generate the limits of PI speed controller. The algorithm offers optimum torque capability for PMSMS despite significant changes in dc link voltage and machine parameters. This algorithm can be easy integrated in the field oriented control of PMSMS with or without mechanical sensors, but also in scalar control algorithm (without motor current measurement). The control identifies when the machine enters in the flux weakening region and adjust the d- and q-axis current reference according to the dc link voltage. The experimental results show that the proposed algorithm provides good steady state and dynamic performance.
{"title":"Novel flux weakening control algorithm for PMSMS","authors":"N. Olarescu, M. Weinmann, S. Zeh, S. Musuroi","doi":"10.1109/POWERENG.2009.4915216","DOIUrl":"https://doi.org/10.1109/POWERENG.2009.4915216","url":null,"abstract":"This paper proposes a novel algorithm to generate the optimum d- and q-axis current reference for the drive system of PMSMS (permanent magnet synchronous motor with sinusoidal excitation) in the entire flux weakening region and also to generate the limits of PI speed controller. The algorithm offers optimum torque capability for PMSMS despite significant changes in dc link voltage and machine parameters. This algorithm can be easy integrated in the field oriented control of PMSMS with or without mechanical sensors, but also in scalar control algorithm (without motor current measurement). The control identifies when the machine enters in the flux weakening region and adjust the d- and q-axis current reference according to the dc link voltage. The experimental results show that the proposed algorithm provides good steady state and dynamic performance.","PeriodicalId":246039,"journal":{"name":"2009 International Conference on Power Engineering, Energy and Electrical Drives","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114091105","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 : 2009-03-18DOI: 10.1109/POWERENG.2009.4915165
C. Grabner, J. Bacher
Successful optimization processes of highly utilized industrial squirrel cage induction machines enforces fast, reliable and accurate design concepts. Therefore, modern numerical finite element calculation procedures, which incorporate moveable rotor parts, non-linear iron saturation effects and realistic geometric properties, have been systematically established and applied to an induction motor in the time-domain for the prediction of several transient and quasi-steady characteristics. The obtained results have been compared with measurements in order to verify the assumptions within the finite element modeling.
{"title":"Electromagnetic design workflow for squirrel cage induction machines","authors":"C. Grabner, J. Bacher","doi":"10.1109/POWERENG.2009.4915165","DOIUrl":"https://doi.org/10.1109/POWERENG.2009.4915165","url":null,"abstract":"Successful optimization processes of highly utilized industrial squirrel cage induction machines enforces fast, reliable and accurate design concepts. Therefore, modern numerical finite element calculation procedures, which incorporate moveable rotor parts, non-linear iron saturation effects and realistic geometric properties, have been systematically established and applied to an induction motor in the time-domain for the prediction of several transient and quasi-steady characteristics. The obtained results have been compared with measurements in order to verify the assumptions within the finite element modeling.","PeriodicalId":246039,"journal":{"name":"2009 International Conference on Power Engineering, Energy and Electrical Drives","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126509910","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 : 2009-03-18DOI: 10.1109/POWERENG.2009.4915209
A. Pirisi, G. Gruosso, R. Zich
In recent years linear generators have been proposed in several marine applications as a well-suited technology for power generation such as power buoys. Those kinds of buoys could be used as large-scale devices in power plants and as small-size devices in electronic supply as well. In this work a three phase tubular permanent magnet linear generator is analyzed to supply electronic devices such as sensorial buoys with energy scavenging. A soft-computing algorithm based on a finite element method has been developed and a parametric approach is presented in order to provide a first optimization for electronic applications. Numerical results have been reported and discussed in detail.
{"title":"Novel modeling design of three phase tubular permanent magnet linear generator for marine applications","authors":"A. Pirisi, G. Gruosso, R. Zich","doi":"10.1109/POWERENG.2009.4915209","DOIUrl":"https://doi.org/10.1109/POWERENG.2009.4915209","url":null,"abstract":"In recent years linear generators have been proposed in several marine applications as a well-suited technology for power generation such as power buoys. Those kinds of buoys could be used as large-scale devices in power plants and as small-size devices in electronic supply as well. In this work a three phase tubular permanent magnet linear generator is analyzed to supply electronic devices such as sensorial buoys with energy scavenging. A soft-computing algorithm based on a finite element method has been developed and a parametric approach is presented in order to provide a first optimization for electronic applications. Numerical results have been reported and discussed in detail.","PeriodicalId":246039,"journal":{"name":"2009 International Conference on Power Engineering, Energy and Electrical Drives","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131750380","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 : 2009-03-18DOI: 10.1109/POWERENG.2009.4915215
N. S. Gameiro, A. Cardoso
A polar chart of the power converter supply current, comprising phase currents and rotor mechanical position information, is presented, in order to characterize the dynamic operation of a SRM drive. Power converter supply current can be used as additional information of extreme importance when a sensor error or failure occurs. Its analysis is then important and permits to develop appropriate fault tolerant control strategies to solve failures or errors on phase current measurements. Time-domain waveforms of the phase currents and power converter supply current are presented and discussed. Two different speed operating conditions examples are presented, in order to understand the differences on SRM dynamic behavior in the all speed range. For both situations, the normal and the faulty operation due to the absence of one motor phase are analyzed. The adopted SRM control strategy, based on the electromagnetic torque regulation, is clearly explained for the all SRM speed range.
{"title":"Supply current polar chart analysis of SRM drives under normal and faulty operating conditions","authors":"N. S. Gameiro, A. Cardoso","doi":"10.1109/POWERENG.2009.4915215","DOIUrl":"https://doi.org/10.1109/POWERENG.2009.4915215","url":null,"abstract":"A polar chart of the power converter supply current, comprising phase currents and rotor mechanical position information, is presented, in order to characterize the dynamic operation of a SRM drive. Power converter supply current can be used as additional information of extreme importance when a sensor error or failure occurs. Its analysis is then important and permits to develop appropriate fault tolerant control strategies to solve failures or errors on phase current measurements. Time-domain waveforms of the phase currents and power converter supply current are presented and discussed. Two different speed operating conditions examples are presented, in order to understand the differences on SRM dynamic behavior in the all speed range. For both situations, the normal and the faulty operation due to the absence of one motor phase are analyzed. The adopted SRM control strategy, based on the electromagnetic torque regulation, is clearly explained for the all SRM speed range.","PeriodicalId":246039,"journal":{"name":"2009 International Conference on Power Engineering, Energy and Electrical Drives","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129399497","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 : 2009-03-18DOI: 10.1109/POWERENG.2009.4915163
H. Najafi, F. Robinson, F. Dastyar, A. Samadi
The small-disturbance voltage stability of a grid-connected wound-rotor induction-generator (WRIG) wind-turbine system is analyzed under different operating conditions. This theoretical study shows the effect of the wound-rotor induction generator and its parameters on load-bus voltage collapse phenomena. Results show that the rotor resistance of the induction generators may decrease the system voltage stability margin and that the transmission line length has an important effect on the maximum loading point and critical point of loading.
{"title":"Small-disturbance voltage stability of distribution systems with wind turbine implemented with WRIG","authors":"H. Najafi, F. Robinson, F. Dastyar, A. Samadi","doi":"10.1109/POWERENG.2009.4915163","DOIUrl":"https://doi.org/10.1109/POWERENG.2009.4915163","url":null,"abstract":"The small-disturbance voltage stability of a grid-connected wound-rotor induction-generator (WRIG) wind-turbine system is analyzed under different operating conditions. This theoretical study shows the effect of the wound-rotor induction generator and its parameters on load-bus voltage collapse phenomena. Results show that the rotor resistance of the induction generators may decrease the system voltage stability margin and that the transmission line length has an important effect on the maximum loading point and critical point of loading.","PeriodicalId":246039,"journal":{"name":"2009 International Conference on Power Engineering, Energy and Electrical Drives","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114937383","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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