Serwis Infona wykorzystuje pliki cookies (ciasteczka). Są to wartości tekstowe, zapamiętywane przez przeglądarkę na urządzeniu użytkownika. Nasz serwis ma dostęp do tych wartości oraz wykorzystuje je do zapamiętania danych dotyczących użytkownika, takich jak np. ustawienia (typu widok ekranu, wybór języka interfejsu), zapamiętanie zalogowania. Korzystanie z serwisu Infona oznacza zgodę na zapis informacji i ich wykorzystanie dla celów korzytania z serwisu. Więcej informacji można znaleźć w Polityce prywatności oraz Regulaminie serwisu. Zamknięcie tego okienka potwierdza zapoznanie się z informacją o plikach cookies, akceptację polityki prywatności i regulaminu oraz sposobu wykorzystywania plików cookies w serwisie. Możesz zmienić ustawienia obsługi cookies w swojej przeglądarce.
This paper provides a modeling approach for conducted Electromagnetic interference (EMI) in Switching Power Converters (SPC). Among the variety of switched-mode power converters, the flyback converter is the favorite choice for low power application due to its low component count, cost-effective structure as well as its large dynamic range. The simulation results declare that the derived model can...
Angiography is a way of producing x-ray Pictures of the insides of blood vessels. When blood vessels are blocked, narrowed, damaged or abnormal in any way, problems, including stroke, may occur. Angiography helps to determine the source of the problem and the extent of damage of the blood vessel segments that are being examined. Digital subtraction angiography (DSA) is a new computer assisted-process...
The rapid developments of the internet and web technology have opened the door for feasible and cost effective solutions for power system problems. This paper is aiming at developing a web-based environment for load flow studies. The existing applications are standalone modules or desktop applications which necessitates the infrastructural setup at the participant site of the deregulated power market...
Distributed Generation (DG) is a small form of generation in less than tens of MW range from renewable energy sources. Wind Energy Conversion System (WECS) based on constant speed squirrel cage induction generator is a popular system in India. Small signal stability analysis is very much essential to study the oscillations which normally exist in a power system and leads to unstable operation when...
This paper proposes an idea for designing a continuously tuned adaptive PI controller for a non-linear process such as conical tank. In this paper, a simple tuning system is used to continuously tune the controller parameters in correspondence with the change in operating points. For each stable operating point, a FOPTD model was identified using process reaction curve method. The estimated model...
State Estimation (SE) is a key Energy Management System (EMS) function, responsible for estimating the state of the power system. Power system is a quasi-static system and hence changes slowly with time. State estimation is computationally expensive and it is a vital problem for the operating engineers. This paper presents a bird's eye view on different methodologies and developments in the area of...
The objective of the economic dispatch problem of electrical power generation is to schedule the committed generating unit's output so as to meet the required load demand while satisfying the system equality and inequality constraints. This paper solves the combined economic emission dispatch problem by using Min-Max and Max-Max price penalty factor approaches using Lagrange's method. The price penalty...
The use of passive component namely the inductor in analog circuits is very difficult at low frequencies, because the size of the inductors becomes very large and the fabrication of inductors in IC is also not possible to suite with the modern advancement of IC technology. In this paper, the method of simulating the passive component L using Generalized Impedance Converter (GIC) is presented. This...
In power system, the nonlinear load affects the power quality such as harmonics of the supply system. In this paper, the diode rectifier is used as load which distorts the supply current. This supply current harmonics are reduced by the Shunt active filter (SAF) which injects the harmonic current to the load. So supply is free from harmonics. The synchronous reference frame theory is used to extract...
Since Superconducting Magnetic Energy Storage (SMES) unit with a self-commutated converter is capable of controlling both the active and reactive power simultaneously and quickly, increasing attention has been focused recently on power system stabilization by SMES control. In this paper investigates the self tuning control scheme for SMES is proposed and applied to Automatic Generation Control (AGC)...
Economic load dispatch (ELD) is one of the most important problems to be solved in the operation and planning of a power system. Nowadays due to increased environmental awareness, generating utilities should optimize their emission in addition to the fuel cost. Recently researchers are developing different soft computing techniques to solve the combined economic and emission dispatch (CEED) problem...
In this paper, we present the noise analysis of simple, but an appealing resistor-capacitor series circuit. As it has found applications in many circuits like RC filter in phase locked loop. The noise originates from the arbitrary thermal motion of carriers and the discreteness of charge. Noise signals are random and must be treated by statistical means. Even though we cannot predict the real noise...
We present in this paper a comparison of two popular time domain numerical techniques, viz., the transmission line matrix (TLM) method and the finite-difference time-domain (FDTD) method for electromagnetic scattering problems. The comparison is made via standard canonical shapes, a conducting cube, and a conducting sphere, to address the factors affecting accuracy, efficiency, and the required computer...
In the energy deficient world, it is strongly felt that the use of solar energy as a possible source is not being fully utilised. So in an attempt to deploy its use, a novel concept of “solar powered stirling engine” is introduced in this paper. At present there are no solar powered Stirling engines ready for use in many countries. The Stirling engine used here runs using solar power from computer...
Over the last two decades, voltage instability problem in power systems have become one of the most important concerns in the power industry. Recently, several network blackouts have been related to voltage collapse. The introduction of emerging Flexible AC Transmission Systems (FACTS) technology improves the Stability, reduces the losses and also reduces the cost of generation. FACTS controllers...
This paper describes the comparative analysis carried out on the closed loop operation of the current controlled boost converter with normal pulse width modulation and with Random modulation. With the normal pulse width modulation the converter is operated periodically and the EMI is measured. Using Random modulation the converter is forced to work chaotically and hence the EMI is measured. A comparative...
In this paper we have given an improved model for throughput enhancement and optimal relay selection. We studied about increase in throughput and optimal relay selection. Here we deployed a base station connected to host-sever, group of relay stations and group of mobile stations that are moving at constant speed. The mobile stations and base stations are deployed based on our new adaptive deployment...
The paper proposes the application of constant frequency unified power quality conditioner to overcome the power quality issues in fixed speed wind mill connected with the micro grid. The power circuit of a constant frequency unified power quality conditioner (CF-UPQC) is based on a combination of UPQC, and frequency regulator (matrix converter). This equipment incorporates compensation functions...
This project describes the implementation of multirate sampling technique for 3-level carrier space vector pulse width modulation based direct torque control (CSVPWM DTC) of induction motor (IM) drive with an objective to reduce the electromagnetic torque ripple for medium to high power applications. The proposed multirate technique for 3-level CSVPWM DTC based IM drive gives lower torque ripple as...
This paper presents a new optimization technique IWD-CO to solve an optimization problem Combined Economic and Emission Dispatch (CEED). The CEED is a combination of Economic Load Dispatch and Emission Dispatch which aims at minimization of the fuel cost and emission cost of generating units while satisfying the load conditions and other constraints. The present algorithm is inspired from the natural...
Podaj zakres dat dla filtrowania wyświetlonych wyników. Możesz podać datę początkową, końcową lub obie daty. Daty możesz wpisać ręcznie lub wybrać za pomocą kalendarza.