This paper presents rapid prototyping of FPGA based digital controller for Distribution STATic COMpensator (DSTATCOM) using Matlab/Simulink and System Generator. The MATLAB/Simulink models are optimized and converted to target-specific synthesized VHDL code for FPGA implementation. Simulation, co-simulation, system level design and verification for rapid prototyping of FPGA-based digital controller are necessary to develop prototype in a relatively short time span by avoiding time-consuming ...

Any material removed from earth looses the natural form of earth, resulting in another dimension of environmental difficulty. This exploitation considers being the exception because without disturbing earth industrialization is not possible. This taking out the material from earth crust (called mining activities) creates misbalancing in earth structures creating different types of environmental problems. So time has come to analyze critically the different trend of challenges and its consequ...

This study is aimed at investigating effects of varying the compression ratio at optimum injection timing and nozzle opening pressure on the behaviour of a diesel engine, using a non-petroleum fuel, i.e. a blend of 80% biodiesel, and 20% oil obtained from pyrolysis of waste tyres. The engine was subjected to one lower (16.5) and one higher (18.5) compression ratio in addition to the standard compression ratio of 17.5. At the higher compression ratio of 18.5 and full load, shorter ignition del...

Early investigation on the use of tyre pyrolysis oil (TPO) on the blended with diesel at 10 to 90% exhibited longer ignition, as a result of lower cetane number of TPO, as well as the blends. In experimental investigation TPO was blended with Jaropha methyl ester (JME) , whose cetane number is higher than diesel fuel, was used as alternative fuel in a single cylinder, four stroke, air cooled, direct injection (DI) diesel engine developing 4.4kW. Five different blends varying TPO from 10 to 50...

This article gives an ample idea about Sliding Mode Controller (SMC) implementation to a DC-DC boost converter for a Solar system to track Maximum Power Point (MPP). SMC implementation accompany three criteria’s; they are Hitting, Sliding Mode (SM) Existence and Stability. One diode Photovoltaic (PV) model is designed for lighting applications, and PV output is connected to a boost converter to regulate and enlarge the voltage up to desired level. SMC is implemented in a feedback manner with ...

Fuel cell is one of the renewable energy sourcesused extensively in stand-alone as well as grid tied applications.Fuel cell provides a low voltage and high current DC outputwhich has to be properly conditioned according to the demandof load. Therefore, a power conditioning unit (PCU) is essentialfor processing the unregulated DC voltage. The PCU possesdifferent dynamics from the fuel cell, so proper modeling of fuelcell as well as PCU is essential. Tight voltage regulation of thepower convert...

Plasma smelting was carried out using blue dust and petroleum coke mixtures for five different compositions. By altering percentage of reductant and type of plasma forming gas, recovery rate and degree of metallization were calculated in order to examine the extent of reduction of blue dust. The products were characterized by XRD and optical microscopy techniques. The results of these investigations exhibited that highest degree of metallization and recovery rate of about 98% and 86% respecti...

This paper houses the effect of sea water immersion on glass fibre reinforced polymer (GFRP) composites. The major sources of interest are study of sea water absorption, penetration of the dissolved salts, details of chemical and physical bonds at the interface, variations of mechanical properties and study of failure mechanisms as revealed through SEM fractographs. Eighteen ply GFRP composites are immersed in sea water for a period of one year in steps of two months durations. It is reveale...

Fly-ash premixed with quartz and illmenite powder in different weight proportions are thermal sprayed on mild steel and copper substrates at various input power levels of the plasma torch ranging from 11 kW to 21 kW DC. The erosion test has done using Air Jet erosion test Reg (As per ASTM G76) with silica erodent typically 150-250 μm in size. Multiple tests were performed at increasing the time duration from 60 sec to 180 sec with increasing pressure (from 1 bar to 2.5 bar) and angle (60...

Spheroidal graphite cast iron (SG iron) is the most preferable member of cast iron family due to its strength and toughness along with good tribological properties. SG iron specimens with annealed and martensitic matrix were subjected to dry sliding wear condition and the system response was correlated to matrix microstructure. Respective microstructure was obtained by annealing and quench and tempering heat treatment process for an austenitizing temperature of 1000°C. Specimens were sub...

Spheroidal graphite cast iron is one of the most favorable materials in cast iron family due to its wide range of mechanical and tribological properties. In the current research priority isgiven towards the investigation of wear system response of spheroidal graphite cast iron subjected to various heat treatment conditions. Pearlitic/ferritic and upper bainitic matrix was obtained through normalizing and austempering treatment for an austenitizing temperature of 1000°C. Dry sliding wear test...

Glass Fiber Reinforced Polymer (GFRP) composites have been widely accepted as high strength, low weight structural material as compared to their metallic counterparts. Some specific advanced high performance applications such as aerospace components still require superior specific strength and specific modulus. Carbon Fiber Reinforced Polymer (CFRP) composites exhibit superior specific strength and modulus but have a lower failure strain and high cost. Hence, the combination of both ...

Fibre reinforced polymer (FRP) composites are increasingly becoming suitable and durable materials in the repair and replacement of traditional metallic materials. The built-in promise of performance assurance and retention of structural integrity in harsh and hostile environments of these materials certainly offer an alternative and attractive avenue for a wider range application to explore its potential to the zenith. The toughest challenge faced by material scientists is to assess a...

Curing cycle has a strong impact on the thermal and mechanical behavior of thermosetting polymers. The extent of cross-linking which is a strong function of curing temperature and time is directly linked to the glass transition temperature (Tg) of the thermosetting polymer. This transition temperature speaks about the transformation of the polymer from glassy state to rubbery state, hence decides the applicability of the material at certain temperature with certain degree of safety...

Earlier investigations by the authors revealed that a blend of 80% Jatropha methyl ester (JME) and 20% Tyre pyrolysis oil (TPO) referred to as JMETPO20 blendexhibited a better performance and lower emissions compared to other JMETPO blends [1]. Being a fuel derived from a non-petroleum source, the original injection timing of diesel engine may not be suitable for the blend. In this study, the influence of the injection timing on the combustion, performance and emission characteristics of a si...

Cloud computing allows users to access resources on demand. The size of data centers increase with the increasing demand for resources by users. Increase in the size of data centers is directly proportional to energy consumption. The total energy requirement has to be minimized by distributing virtual machine requests over data centers optimally, with the consideration of prices of distribution of virtual machines. These two parameters are taken into account to frame the objective function f...

Optical Burst Switching (OBS) is considered as an efficient switching paradigm for building the next generation optical Internet. This review has been motivated by the need for techniques that are capable of supporting the future bandwidth requirement of next-generation applications and services of Internet Protocol (IP) networks. The authors have discussed the basic concepts of OBS paradigm and outlined the signaling and scheduling issues related to OBS networks. Further, a brief summary on ...

Paper describe process for migration of exiting data, implementation and customization of open source software (OSS) Koha, problem faced and discovering their solutions from various sources, to share customized codes and motivate library professionals to use OSS without spending funds with little effort. Paper discusses Saharanpur Campus Library of Indian Institute of Technology Roorkee (IITR) Library automation and data migration processes for Implementation of Koha. It highlights the method...

Functional complexity, circuit density and performance of integrated circuits (ICs) are persistently escalating. Test data generated for such ICs, using de facto scan test, is expanding beyond gigabits. Precise comparison of such bulky data on automatic test equipment (ATE) demands huge memory, large number of scan channels, multiple drive and compare edges per tester cycle and augmented test time, that are collectively increasing test cost. In this paper an on-chip self-testing signature reg...