American Journal of Electrical and Electronic Engineering

Electricity stealing not only makes great economic losses, but also threatens the order and security of power supply seriously. This paper starts from electricity theft, and puts forward an anti-electricity theft design based on electricity comparative method. According to programming realization and simulation test by MATLAB, we verify the feasibility and effectiveness of the design. The anti-electricity theft design can be applied to demotic users and middle/small-sized enterprises to reduce loss from electricity theft.

American Journal of Electrical and Electronic Engineering. 2015, 3(4), 107-111. DOI: 10.12691/ajeee-3-4-4
Pub. Date: November 02, 2015

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Smart Evolutionary Algorithm for Static Economic Load Dispatch Optimization in a Thermal Generating Station

by Sunny Orike and Vincent I. E. Anireh

Original Research

The Economic Load Dispatch (ELD) problem is an optimization task with emphasis on how power generating companies (GENCOs) will be able to meet the power demands of the distribution companies (DISCOs) and electricity consumers, and at the same time minimize both under/over generation of electricity, and also minimize the operational costs of running the units in their various stations. This paper implemented a Smart Evolutionary Algorithm, which combines a standard Evolutionary Algorithm with a smart mutation operator that is applied to the Static ELD problem. It also investigated and analyzed three distinct variants of the smart mutation operator. The operator focused mutation on genes contributing mostly to cost of generation and penalty violations in the fitness function. Rather than using a generic off-the-shelf optimization package, the paper demonstrated a novel approach to solving certain kinds of real-world problems, contributing a method that have advanced the state of the art in solving a specific optimization problem in the area of economic load dispatch.

American Journal of Electrical and Electronic Engineering. 2015, 3(4), 100-106. DOI: 10.12691/ajeee-3-4-3
Pub. Date: October 16, 2015

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Design and Performance Evaluation of Microstrip Antenna for Ultra-Wideband Applications Using Microstrip Feed

by Gourav Misra, Arun Agarwal and Kabita Agarwal

Original Research

In the modern days the development in communication systems engineering requires the development of low profile antennas that are capable of maintaining high performance over a wide spectrum of frequencies. In this review, we have designed an elementary Microstrip patch Antenna for ultra-wideband application. This technological trend has focused much effort on the basic concepts, characteristics and design of a Microstrip patch antenna. This paper explains the pattern of designs of the Microstrip patch antenna along with detailed study. A thorough analysis and observations of the problem begins with the application of the equivalence principle that introduces the unknown electric and magnetic surface current densities on the dielectric surface. Here in this technical review, our main goal is to design an elementary Microstrip antenna, which will work in the ultra-wide band range and also it should work in the desired operating frequency. Ansoft High Frequency Structured Simulations (HFSS) software is used for the elementary design of a rectangular patch Microstrip antenna and also some of the basic calculations has been done by using MATLAB. This review paper also comprises of basic parameters, types of antenna, working, fundamental concepts and characteristics as well as feeding techniques and simulation, results of Microstrip patch antenna.

American Journal of Electrical and Electronic Engineering. 2015, 3(4), 93-99. DOI: 10.12691/ajeee-3-4-2
Pub. Date: September 20, 2015

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Synthetic Floating Inductors realized with only two Current Feedback Op-amps

by D. R. Bhaskar and R. Senani

Letter To Editor

Two floating inductance (FI) circuits are presented which employ a canonical number of passive components (namely, only two resistors and a capacitor) as well as canonical number of active elements (only two CFOAs) and realize single-resistance-tunable inductance value, without requiring any component-matching or cancellation constraints. The workability of the proposed circuits and their applications has been confirmed by hardware implementation and SPICE simulations based on AD844-type CFOAs.

American Journal of Electrical and Electronic Engineering. 2015, 3(4), 88-92. DOI: 10.12691/ajeee-3-4-1
Pub. Date: September 09, 2015

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15359 Views4375 Downloads2 Likes1 Citations