Santhoshi, B. Kavya Mohanasundaram, K. Kumar, L. Ashok
Published in
Electrical Engineering
The multidimensional purposes of grid-tied hybrid renewable system such as tracking of maximum power, increasing the power conversion efficiency, reducing the harmonic distortions in the injected current and control over power injected into the grid are presented in this paper by developing a laboratory-scale setup. To ensure continuous current ope...
Elsotohy, Asmaa M. Eisa, Ayman A. Adail, Ahmed S. Mehanna, Mohamed A.
Published in
Electrical Engineering
A precise understanding for nuclear power plant (NPP) response to grid disturbances is required to ensure safe and reliable operation for both NPP and power grid. NPP performance is studied by dynamic modeling and simulation, since it is not practical to study it by experiments. In this work, a mathematical model for complete pressurized water reac...
da Silva Antunes, Fábio Augusto da Silveira, Paulo Márcio
Published in
Electrical Engineering
Transmission system restoration is a critical task which requires agility and safety. On the one hand, the restoration proceedings, composed of numerous documents, establish the sequence and its preconditions that must be observed before the execution of each action. On the other hand, a significant amount of information, such as alarms and protect...
Tamilselvi, S. Baskar, S. Sivakumar, T. Anandapadmanaban, L.
Published in
Electrical Engineering
In this paper two crucial variables, namely type of winding material and number of core steps, have been proposed to minimize the purchase cost, total mass, loss, and life time cost of the transformer. In order to make cost-effective and energy-efficient transformer design, the proposed variables are used in conjunction with six primary variables f...
Ali, Qasim Bukhari, Syed Sabir Hussain Atiq, Shahid
Published in
Electrical Engineering
Different topologies for brushless wound rotor synchronous machines (BL-WRSMs) have been proposed recently. This paper proposes a new model for the existing sub-harmonically excited BL-WRSM to eliminate the unbalanced radial force presented in the initial model. The initial and proposed models are analyzed using a two-dimensional finite element met...
Hunter, Gustavo Riedemann, Javier Andrade, Iván Blasco-Gimenez, Ramón Peña, Rubén
Published in
Electrical Engineering
Under voltage faults, grid-tied photovoltaic inverters should remain connected to the grid according to fault ride-through requirements. Moreover, it is a desirable characteristic to keep the power injected to grid constant during the fault. This paper explores a control strategy to regulate the active and reactive powers delivered by a single-stag...
Francis, Roy Meganathan, D.
Published in
Electrical Engineering
Conventionally, multilevel inverters utilise multi-carrier pulse width modulation or multi-stepped (staircase) modulation to produce high-power quality waveforms. Though multi-carrier modulation schemes reduce total harmonic distortion (THD), they lead to considerable switching loss at higher modulation indexes. The staircase modulation, which oper...
Samartkit, P. Pullteap, S.
Published in
Electrical Engineering
In this work, designing of business investment decision making-assisted software has, preliminarily, been developed. The net present value (NPV), internal rate of return (IRR), benefit–cost ratio (BCR), and payback period (PB) have been employed as input parameters for feasibility analysis. Furthermore, three of them have, next, been synthesized th...
Franc, Jiri Pechanek, Roman Kindl, Vladimir Zavrel, Martin
Published in
Electrical Engineering
This paper describes modified ventilation system and thermal analysis of low-power 40-MW turbo generator. The study compares thermal behaviour of the machine for three different arrangements of the rotor ventilation ducts. Variations of both the sub-slot and the radial ducts are analysed. The described work follows up on the ventilation calculation...
Palšauskas, Mečys Baliukonis, Gintautas Jasinskas, Algirdas Pocius, Antanas
Published in
Electrical Engineering
The integration of photovoltaic devices (PV) into the network could ensure the efficient use of solar energy. Nevertheless, when using PV systems for water heating, the main problem arises: if a heating element is directly connected to a solar module without using a device that regulates the supply of electric energy to the electric heating element...
