Design and implementation of FPGA-based high power LED lighting system for ships

724-729Light emitting drive system used in ships induce less input side power factor with highly distorted line (AC) current which brings down the quality of AC power supply system. To suppress these limitations, futuristic ANFIS tuned PI controller operated modified SEPIC rectifier is designed and the effective analysis and results are presented in this paper. More desirable power quality is achieved with ANFIS tuned PI controller when compared with PI/fuzzy tuned PI controller in ship’s LED light module. LED driver module of 48 V, 100 W power rating is built and its upgraded operating performance is accomplished by the execution of controller in FPGA Spartan–6 platform. The satisfactory result of 2.927%-line current harmonic distortion and supply side 0.9991 power factor (within IEEE-516 standard) is attained. Steady state study involving 0.09 s, rise time with zero overshoot is acquired

Optimization Methods Applied to Power Systems Ⅱ

Electrical power systems are complex networks that include a set of electrical components that allow distributing the electricity generated in the conventional and renewable power plants to distribution systems so it can be received by final consumers (businesses and homes). In practice, power system management requires solving different design, operation, and control problems. Bearing in mind that computers are used to solve these complex optimization problems, this book includes some recent contributions to this field that cover a large variety of problems. More specifically, the book includes contributions about topics such as controllers for the frequency response of microgrids, post-contingency overflow analysis, line overloads after line and generation contingences, power quality disturbances, earthing system touch voltages, security-constrained optimal power flow, voltage regulation planning, intermittent generation in power systems, location of partial discharge source in gas-insulated switchgear, electric vehicle charging stations, optimal power flow with photovoltaic generation, hydroelectric plant location selection, cold-thermal-electric integrated energy systems, high-efficiency resonant devices for microwave power generation, security-constrained unit commitment, and economic dispatch problems

Crab and cockle shells as heterogeneous catalysts in the production of biodiesel

In the present study, the waste crab and cockle shells were utilized as source of calcium oxide to transesterify palm olein into methyl esters (biodiesel). Characterization results revealed that the main component of the shells are calcium carbonate which transformed into calcium oxide upon activated above 700 °C for 2 h. Parametric studies have been investigated and optimal conditions were found to be catalyst amount, 5 wt.% and methanol/oil mass ratio, 0.5:1. The waste catalysts perform equally well as laboratory CaO, thus creating another low-cost catalyst source for producing biodiesel. Reusability results confirmed that the prepared catalyst is able to be reemployed up to five times. Statistical analysis has been performed using a Central Composite Design to evaluate the contribution and performance of the parameters on biodiesel purity

Molecular phylogeny of horseshoe crab using mitochondrial Cox1 gene as a benchmark sequence

An effort to assess the utility of 650 bp Cytochrome C oxidase subunit I (DNA barcode) gene in delineating the members horseshoe crabs (Family: xiphosura) with closely related sister taxa was made. A total of 33 sequences were extracted from National Center for Biotechnological Information (NCBI) which include horseshoe crabs, beetles, common crabs and scorpion sequences. Constructed phylogram showed beetles are closely related with horseshoe crabs than common crabs. Scorpion spp were distantly related to xiphosurans. Phylogram and observed genetic distance (GD) date were also revealed that Limulus polyphemus was closely related with Tachypleus tridentatus than with T.gigas. Carcinoscorpius rotundicauda was distantly related with L.polyphemus. The observed mean Genetic Distance (GD) value was higher in 3rd codon position in all the selected group of organisms. Among the horseshoe crabs high GC content was observed in L.polyphemus (38.32%) and lowest was observed in T.tridentatus (32.35%). We conclude that COI sequencing (barcoding) could be used in identifying and delineating evolutionary relatedness with closely related specie

Aerial Vehicles

This book contains 35 chapters written by experts in developing techniques for making aerial vehicles more intelligent, more reliable, more flexible in use, and safer in operation.It will also serve as an inspiration for further improvement of the design and application of aeral vehicles. The advanced techniques and research described here may also be applicable to other high-tech areas such as robotics, avionics, vetronics, and space

Матеріали Ⅳ Міжнародної науково-технічної конференції „Теоретичні та прикладні аспекти радіотехніки, приладобудування і компʼютерних технологій“ присвячена 80-ти річчю з дня народження професора Я.І. Проця

Роботи друкуються в авторській редакції. Видавець не несе відповідальності за достовірність інформації, яка наведена в роботах, та залишає за собою право не погоджуватися з думками авторів на розглянуті питання.Збірник містить матеріали IV Міжнародної науково-технічної конференції «Теоретичні та прикладні аспекти радіотехніки, приладобудування і комп’ютерних технологій» з таких основних напрямків: математичні моделі та інформаційні технології; обчислювальні методи та засоби в радіотехніці і приладобудуванні; супутникові та наземні системи телекомунікацій; електроживлення радіоелектронної апаратури; біомедична інженерія; автоматизація та комп’ютерні технології; світлотехніка і електроенергетика