Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Kostić Miloje"'
Autor:
Kostić Miloje M.
Publikováno v:
Tehnika, Vol 72, Iss 3, Pp 392-400 (2017)
The values of saturated synchronous reactances turbogenerator for d-axis and q axis are different, Xd,sat > Xq,sat and when their unsaturated equal value, Xd,u = Xq,u. The exact calculation these reactances is quite complex and is conducted only usin
Externí odkaz:
https://doaj.org/article/6f43b83444b64901a314522b9057d634
Publikováno v:
Tehnika, Vol 71, Iss 2, Pp 263-269 (2016)
Calculation and analysis potier reactance dependence in high reactive power region (QG ≥ QG,N). Important conclusion is that corresponding potier reactance values practically equally that in rated regime. It is enabled that excitation current calcu
Externí odkaz:
https://doaj.org/article/76814a26fef348498fbd31e0fba2e264
Autor:
Kostić Miloje
Publikováno v:
Zbornik Radova: Elektrotehnički Institut "Nikola Tesla", Vol 2015, Iss 25, Pp 111-125 (2015)
A new simplified procedure for defining the limiting operating regimes on the generator capability curve, with respect to stator end core heating, is proposed and described in this paper. First of all, a simplified analysis of axial flux leakage that
Externí odkaz:
https://doaj.org/article/2df9f203774a43f6960637caada68975
Autor:
Kostić Miloje M.
Publikováno v:
Serbian Journal of Electrical Engineering, Vol 12, Iss 3, Pp 303-320 (2015)
On the basis of the known fact that all air gap main flux density variations are enclosed by permeance slot harmonics, only one component of stray losses in rotor (stator) iron is considered in the new classification, instead of 2 components: roto
Externí odkaz:
https://doaj.org/article/a2e7cb51dde2423cb7f80884c395391b
Autor:
Kostić Miloje M.
Publikováno v:
Tehnika, Vol 70, Iss 4, Pp 647-654 (2015)
Statement about mutually dependence of Potier reactance value from load regime is analyzed in this paper, as and accuracy corresponding method for determination of generator field current. Proposed procedure accuracy, which is based on loaded machine
Externí odkaz:
https://doaj.org/article/67de7804bdfb4339a65981ba9e449338
Autor:
Kostić Miloje
Publikováno v:
Zbornik Radova: Elektrotehnički Institut "Nikola Tesla", Vol 2014, Iss 24, Pp 177-191 (2014)
A new method for determining the operational saturated synchronous reactances (Xd,sat and Xq,sat) and the rotor angle (δ), under the normal operating condition, was presented in this paper. At the power station the voltages (U), active (P) and react
Externí odkaz:
https://doaj.org/article/fb03295ca29e47569f29f58a48eb1f94
Autor:
Kostić Miloje, Georgijević Nikola
Publikováno v:
Zbornik Radova: Elektrotehnički Institut "Nikola Tesla", Vol 2014, Iss 24, Pp 107-117 (2014)
The purpose of the analysis of measurement results of harmonics presented in this paper is to predict the potential dangers after installation of capacitor banks in a medium-voltage (6 kV) network of the Kolubara open pit mine. Although the measured
Externí odkaz:
https://doaj.org/article/6f9e9d752c654a3b8295780f4966f705
Publikováno v:
Zbornik Radova: Elektrotehnički Institut "Nikola Tesla", Vol 2011, Iss 21, Pp 1-20 (2011)
The new method for turbogenerator power losses determination is introduced in this paper. The method relies on the experimentally derived power losses versus power reactive power dependence using data recorded in characteristic operating points. The
Externí odkaz:
https://doaj.org/article/e37e8525a43b4d568aff6966cdd84696
Autor:
Kostić Miloje M.
Publikováno v:
Zbornik Radova: Elektrotehnički Institut "Nikola Tesla", Vol 2011, Iss 21, Pp 129-138 (2011)
The proposed procedure is based on the fact that total transformer losses (PLL1,n), determined by short circuit test, can be separated into two components: the eddy current losses in the windings (PEC1,n) and stray flux losses (PSL1,n) in iron parts
Externí odkaz:
https://doaj.org/article/15525a0b4e4c4590aaa967a26cf7c802
Autor:
Kostić Miloje M.
Publikováno v:
Zbornik Radova: Elektrotehnički Institut "Nikola Tesla", Vol 2011, Iss 21, Pp 61-77 (2011)
Motor energy management includes adequate sizing, control and improvement of electric energy quality, i.e. voltage quality (reducing voltage unbalance and harmonics distortion), and the proper maintenance. The specific motor price per kW is approxima
Externí odkaz:
https://doaj.org/article/a5d2bc9d85414b798ce4ed5470ff163e