Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Teodor DUMITRIU"'
Publikováno v:
Analele Universităţii "Dunărea de Jos" Galaţi: Fascicula III, Electrotehnică, Electronică, Automatică, Informatică, Vol 32, Iss 1, Pp 30-36 (2009)
Line-frequency controlled rectifiers have two major disadvantages: variable displacement power factor and high harmonic current fed to the power supply. If the power converter is large, e.g. for rolling mills drives, it is necessary to use a local re
Externí odkaz:
https://doaj.org/article/d02134b7e0484116979c7973b3d56503
Publikováno v:
Analele Universităţii "Dunărea de Jos" Galaţi: Fascicula III, Electrotehnică, Electronică, Automatică, Informatică, Vol 2007, Iss 1, Pp 96-101 (2007)
A position drive system with D.C. motor is operated using conventional position, speed and current controls. These controls provide a good dynamic and steady-state behaviour, but they do not take in consideration the conversion’s efficiency. It is
Externí odkaz:
https://doaj.org/article/8e222795f29c43bb890627b1603d1658
Publikováno v:
Analele Universităţii "Dunărea de Jos" Galaţi: Fascicula III, Electrotehnică, Electronică, Automatică, Informatică, Vol 2006, Iss 1, Pp 106-109 (2006)
Friction, especially its nonlinear components, may degrade the tracking performance of any servo drive systems. Focused on high precision positioning of DC electrical drive the paper proposes an easy method to compensate for the friction by using a n
Externí odkaz:
https://doaj.org/article/e79fd3420d324c609c780f7f79b38709
Publikováno v:
Analele Universităţii "Dunărea de Jos" Galaţi: Fascicula III, Electrotehnică, Electronică, Automatică, Informatică, Vol 2006, Iss 1, Pp 100-105 (2006)
The paper presents an active power filter control method. The reference signal is generated in the stationary reference frame a-ß using multiresolution analysis and the controllers used are P-resonant controllers, suitable for this particular applic
Externí odkaz:
https://doaj.org/article/a32346e42f164572885a4556fa2cebc7
Publikováno v:
Analele Universităţii "Dunărea de Jos" Galaţi: Fascicula III, Electrotehnică, Electronică, Automatică, Informatică, Vol 2006, Iss 1, Pp 94-99 (2006)
The control of shunt active power filters using PWM inverters consists in generating a reference by separating, using different methods, the harmonics to be eliminated. The methods used are time-consuming and need dedicated control and signal process
Externí odkaz:
https://doaj.org/article/02394e108f1545a590989a30155cc2b7
Autor:
Teodor DUMITRIU
Publikováno v:
Analele Universităţii "Dunărea de Jos" Galaţi: Fascicula III, Electrotehnică, Electronică, Automatică, Informatică, Vol 2005, Iss 1, Pp 5-10 (2005)
This paper focuses on the development of a MATLAB/Simulink® library for servo-systems with friction as a part of a new simulation platform dedicated to model, analysis and control design of friction. It is well known that friction is a very importan
Externí odkaz:
https://doaj.org/article/30269590f3b2498fbf1fe4db93d3734b
Autor:
Traian Munteanu, Cristinel Dache, Emil Rosu, Marian Gaiceanu, Teodor Dumitriu, Romeo Paduraru, Gabriel Frangopol
Publikováno v:
2016 International Conference and Exposition on Electrical and Power Engineering (EPE).
The advantages of the squirrel cage three-phase induction motors used in servo positioning applications are severely compromised due to the strong nonlinear coupling between the flux and the speed, which implies sophisticated control algorithms and s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::caf441e62135947e5f12eac5c96b4eb3
https://doi.org/10.1109/icepe.2016.7781421
https://doi.org/10.1109/icepe.2016.7781421
Autor:
Traian Munteanu, Cristinel Dache, Marian Gaiceanu, Teodor Dumitriu, Emil Rosu, Romeo Paduraru
Publikováno v:
2013 4th International Symposium on Electrical and Electronics Engineering (ISEEE).
This paper presents an energy saving control for the field weakening DC drives. The system model is liniarized and optimal control technique is applied, in order to enhance the DC drive efficiency in the high speed dynamical regimes. The proposed sol
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5e7093c753bf8047b3a82b50c9398a8b
https://doi.org/10.1109/iseee.2013.6674310
https://doi.org/10.1109/iseee.2013.6674310
Autor:
Traian Munteanu, Emil Rosu, Teodor Dumitriu, Cristinel Dache, Marian Gaiceanu, Romeo Paduraru
Publikováno v:
2010 3rd International Symposium on Electrical and Electronics Engineering (ISEEE).
An electric drive system can operate using conventional position, speed and current controllers or other advanced control methods. These control methods provide good dynamic and stationary performances, but they do not take into consideration the con
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a8b5c342367a5f33689393ae0e55bab5
https://doi.org/10.1109/iseee.2010.5628476
https://doi.org/10.1109/iseee.2010.5628476
Autor:
Cristinel Dache, Emil Rosu, Teodor Dumitriu, Traian Munteanu, Marian Gaiceanu, Romeo Paduraru
Publikováno v:
2010 3rd International Symposium on Electrical and Electronics Engineering (ISEEE).
This paper considers a linear control design of separately excited DC motor system (SEDCM) operated in the field weakening high speed regime. Nonlinear multiple input — multiple output (MIMO) feedback linearization is applied and a linear controlle
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b10afd83e897b4e077105193a5700659
https://doi.org/10.1109/iseee.2010.5628524
https://doi.org/10.1109/iseee.2010.5628524