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Browsing Elektrik - Elektronik Mühendisliği / Electrical and Electronics Engineering by Issue Date

Browsing Elektrik - Elektronik Mühendisliği / Electrical and Electronics Engineering by Issue Date

Now showing items 1-11 of 567

Load flow based on Newton's method using Norton equivalent circuit for AC-DC multiterminal systems

Arifoğlu, Uğur (VDE VERLAG GMBH, 1999)

This paper presents the Newton-Raphson approach using new equations to the power-flow analysis in steady-state for multiterminal DC-AC systems. A flexible and practical choice of per-unit system is used to formulate the ...
New sequential AC-DC load-flow approach utilizing optimization techniques

Arifoğlu, Uğur (VDE VERLAG GMBH, 1999)

This paper presents a novel method for solving the sequential load-flow problem of a general multiterminal DC network in an integrated A C-DC system. The proposed method utilizes optimization technique both to pl-event the ...
A simulation study of the cloud propagation model

Çerezci, Osman (IOP PUBLISHING LTD, 1999)

Propagation through a sparse distribution of lossy particles in a cloud is investigated. Using a discrete modelling technique, a mathematical model to aid in the interpretation of the interaction data obtained by electromagnetic ...
On the design of low-frequency filters using CMOS OTAs operating in the subthreshold region

Düzenli, Gürsel (ELSEVIER ADVANCED TECHNOLOGY, 1999)

Design considerations on a circuit technique based on subthreshold operation of MOS transistors is described for the realization of low-frequency OTA-C active filters with small capacitance values of the order of 25-400 ...
A new digital relay for generator protection against asymmetrical faults

Bayrak, Mehmet (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2002)

Under unbalanced conditions the three phase instantaneous power oscillates at twice the power system frequency. The magnitude of these oscillations can be used as a measure of the system unbalance. This paper has introduced ...
The power flow algorithm for balanced and unbalanced bipolar multiterminal ac-dc systems

Arifoğlu, Uğur (ELSEVIER SCIENCE SA, 2003)

Bipolar dc terminals are used for hvdc transmission in an ac-dc system. The sequential ac-dc power flow algorithm has been proposed for an ac-dc system consisting of balanced and unbalanced bipolar multiterminal in this ...
The determination of the stability regions and sequential transient stability analysis of integrated AC-DC power system consisting of bipolar DC lines via the controlling unstable equilibrium points

Ayan, Kürşat; Arifoğlu, Uğur (VDE VERLAG GMBH, 2003)

In this paper, a sequential transient stability analysis of an integrated AC-DC power system consisting of bipolar MTDC is accomplished by taking into account the variation of the amplitude of the bus voltages during ...
A digital adaptive filter for detecting harmonic, active and reactive currents

Özdemir, Ayhan (IOP PUBLISHING LTD, 2004)

There have been a number of harmonic and reactive current-detecting methods for active power filters. All of these methods suffer from limitations such as being computationally costly or being sensitive to environmental ...
Power flow state estimator using two-layer neural network structure

Ayan, Kürşat; Arifoğlu, Uğur (ELSEVIER SCIENCE SA, 2004)

This paper is devoted to the development of a neural network structure which implements the line,power flow state estimator algorithm for solving the set of nonlinear equations of power system automatic generation control ...
LECTURE NOTES IN ARTIFICIAL INTELLIGENCE

Yumuşak, Nejat; Çerezci, Osman; Temurtaş, Feyzullah (SPRINGER-VERLAG BERLIN, 2004)

In this study, the method to apply the Elman's recurrent neural networks using resilient back propagation for harmonic detection is described. The feed forward neural networks are also used for comparison. The distorted ...
Optimization of resistive loading of EMI/EMC near field probe

Köklükaya, Etem (ELSEVIER SCIENCE BV, 2004)

Near field studies must be carried out to insulate printed circuit boards and other circuits entirely from outer space. It can be achieved by utilizing the screen properly. These studies must always be made in the near ...