Results 11 to 20 of about 725 (207)
Propose a MPPT Algorithm Based on Thevenin Equivalent Circuit for Improving Photovoltaic System Operation [PDF]
Frontiers in Energy Research, 2020 Smart grids are considered as key solutions to solve current power security issues. Among these suggestions, microgrid is proposed to integrate distributed generations (DGs) such as photovoltaic (PV) system into the network and the control of DGs output ...
Binh Nam Nguyen +5 more
doaj +4 more sources
EnergiesThe short-circuit ratio is a key index used to measure the voltage support capability of new energy grid-connected systems, which contradicts its accuracy and practicability.
Li Sun, Lingwei Kong
doaj +4 more sources
Determination of the Thevenin equivalent in power grids using real records based on short circuit power [PDF]
IET Generation, Transmission & Distribution, 2021 In recent years, methods for loadability determination based on real‐time measurements have been proposed for long‐term voltage stability scenarios. One of these methods corresponds to the reduction of the complete system into a basic Thevenin equivalent
A. Fonseca +3 more
doaj +2 more sources
An Accurate Time Constant Parameter Determination Method for the Varying Condition Equivalent Circuit Model of Lithium Batteries [PDF]
Energies, 2020 An accurate estimation of the state of charge for lithium battery depends on an accurate identification of the battery model parameters. In order to identify the polarization resistance and polarization capacitance in a Thevenin equivalent circuit model ...
Liang Zhang +5 more
doaj +2 more sources
Hybrid of Thevenin and Norton Equivalent Circuits Analogous to a Source Equivalence Theorem in Electromagnetics [PDF]
Celal Bayar Üniversitesi Fen Bilimleri Dergisi, 2020 According to the conventional perception among engineers, once a circuit is reduced to its Thevenin or Norton equivalent, the voltage and current may be determined only at the load, but not in the remaining parts. The other voltages and currents that exist in the remaining parts of circuit should be determined by returning to the original circuit ...
IŞIK, Ömer, ERZEN, Lokman, UZER, Ali
openaire +4 more sources
Energies, 2020 With the increased proportion of intermittent renewable energy sources (RES) integrated into the sending-end, the total transfer capability of transmission lines is not sufficient during the peak periods of renewable primary energy (e.g., the wind force),
Yuwei Zhang +4 more
doaj +2 more sources
Estimation of the Equivalent Circuit Parameters of Induction Motors by Laboratory Test
Machines, 2021 The determination of equivalent circuit parameters for AC induction motors represents an important task in an electrical machine laboratory. Frequently used open-circuit and short current tests answer these requirements.
Moshe Averbukh, Efim Lockshin
doaj +2 more sources
Practical calculation of asymmetric short circuit current of DFIG connected to distribution network [PDF]
E3S Web of Conferences, 2020 In view of the existing complex analytic calculations of DFIG short-circuit current are hardly applied in engineering projects, a practical calculation of asymmetric short-circuit current of DFIG is proposed.
Fu Pengwu +4 more
doaj +2 more sources
Energies, 2011 To improve the use of lithium-ion batteries in electric vehicle (EV) applications, evaluations and comparisons of different equivalent circuit models are presented in this paper.
Jinxin Fan, Hongwen He, Rui Xiong
doaj +2 more sources
Detailed quantitative comparison of half-bridge modular multilevel converter modelling methods
The Journal of Engineering, 2019 This paper presents a detailed comparison of different modelling methods of the half-bridge modular multilevel converter (HB-MMC), namely, switching function, Thevenin equivalent, and averaged, considering both MMC implementations (large and reduced ...
Deyang Guo +6 more
doaj +2 more sources