International Journal of Innovative Trends in Engineering
Approved By International Serial Standard(ISSN), National Science Library(NSL) and National Institute of Science Communication and Information Resources(NISCAIR)
ISSN: 2395-2946 (Online)

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IJITE - Volume 01, Number 01

Published On : Jan 2015
SNo. Paper Title & Authors Page Download
Metal Penetration and its Resolution: Ranking of Qualitative Factors in Automatic Flaskless Green Sand Casting Process Using Analytic Hierarchical Process
Raghwendra Banchhor, S. K. Ganguly
Abstract: Defects in casting often lead to rejection, which would ultimately results in loss of productivity for a foundry. In order to ensure the required quality level, the foundry has to implement a continuous quality enhancement strategy to produce defect free casting. This paper proposes a strategy to prioritize the qualitative factors which are responsible for random occurrence of metal penetration in an automatic flaskless molding casting process using Analytic Hierarchical Process (AHP). An AHP structure is formed with criteria severity, occurrence and detection as in an FMEA framework. The alternatives are four areas of the foundry i.e. moulding sand, mold, operator and environment. Various causes for metal penetration are placed as sub-alternatives under these alternatives. After AHP analysis the critical causes of metal penetration were found and suggestions were made so as to reduce the probability of occurrence of the defect.
Keywords: Analytic Hierarchical Process (AHP), Flaskless Moulding, Metal Penetration.
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Fuzzy Based SVPWM Technique for Connecting DG to Grid
Lalahmed Mohammad, U Chandra Rao, Ch Rambabu
Abstract: This paper presents a fuzzy logic controller (FLC) based SVPWM technique for autonomous operation of an electronically interfaced distributed generation unit and its load. This proposed system which can compensate for active, reactive, and harmonics load current components during connection of grid to the DG link. In the grid connection mode, the voltage-source converter is operated in the active and reactive power (PQ) control mode. In this paper, a fuzzy logic based SVPWM technique is employed to generate the switching pulses for the switches in voltage source converter due to its fast dynamic response and better DC-link voltage utilization. In this proposed system fuzzy controller also reduces the Total Harmonic Distortion (THD) in the grid current. The overall system with the proposed control strategy is developed and simulated in MATLAB/SIMULINK environment.
Keywords: Distributed Generation (DG), Fuzzy Logic Controller (FLC), Total Harmonic Distortion (THD),Voltage Source Converter (VSC).
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Revival and Innovations in Mathematics Pedagogy: A Case Study
Dr. Jyoti Sharma, Dr. Pankaj Tyagi
Abstract: Mathematics Education is an area of considerable debate and concern across global. In developing countries like India, where education is the most significant route for social and economic mobility, mathematics is considered as a subject of high intellect and social prestige. Students who are not good in mathematics are considered dump and non-serious. The acute pressure on school students to perform well in mathematics clubbed with severe shortage of well qualified mathematics teachers, multiplies the challenges to provide meaningful mathematics learning. The present paper presents a crisp and coherent outlay of an innovative experiment that has taken place in Cluster Innovation Centre (CIC), University of Delhi, India. Two leading central universities of India, University of Delhi and Jamia Millia Islamia have started Meta University based Masters’ degree program in Mathematics Education in the country. The conception of the course is historical as it is the first and maiden Meta University based course in the country. The course is a landmark development in the history of mathematics education in India as it is the first education course offered at post graduate level in subject specific domain. The author presents snapshots of the course while discussing important highlights of the course.
Keywords: Meta University, Innovation, Pedagogy.
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Improvement and Comparison of ATC using Facts with Expert Systems
G.S.S. Manikanta, M.R.P. Reddy, Ch. Rambabu
Abstract: In this paper the Improvement and comparison of ATC in current De-Regulated environment was discussed. In order to facilitate the electricity market operation and trade in the restructured environment, ample transmission capability should be provided to satisfy the demand of increasing power transactions. The conflict of this requirement and the restrictions on the transmission expansion in the restructured electricity market has motivated the development of methodologies to enhance the available transfer capability (ATC) of existing transmission grids. which is computed using proposed technique named by Continuous Power Flow (CPF). In order to have improvement in ATC, Flexible AC Transmission System (FACTS) devices are used to control power flow (PF), thus improve the power profile in the transmission system. In this paper the Expert System is used which is nothing but RGA(Real code Genetic Algorithm) is used as the optimization tool to determine the location as well as the controlling parameter of FACTS Devices, these FACTS Devices can control voltage magnitude, phase angle and circuit reactance. Using these devices may redistribute the load flow, regulating bus voltages. The performance of Expert system has been tested on IEEE-14, IEEE-24&IEEE-75 bus systems.
Keywords: ATC, FACTS Devices, power seller/buyer, Load flows, Expert system, RGA.
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Power Analysis of Sleep and Dream Modes of Multimode Architecture
Archana M C, Remya Ramachandran
Abstract: Power consumption is one of biggest challenges in VLSI design. In the past, power has mainly been a concern for chips used in battery-powered devices. During long periods of inactivity, multi-threshold CMOS is very effective for reducing leakage power. There are many techniques to reduce static power. However, they are very much sensitive to process variations which affect manufacturability. Reducing leakage power remains to be one of the key design goals in the mean time. So, a new multi-mode power switch architecture with SPST adder as logic core is proposed. It offers greater power reduction and delay degradation and also requires less design effort. It also assures low leakage power and high tolerance to process variations. To achieve further static power reduction benefits, it can be combined with the existing techniques. The total estimated power consumption of sleep and dream modes are 83mW and 60mW respectively. Hence it is clear that the total power consumption can be decreased to a great extend using intermediate power off modes.
Keywords: Multi-threshold CMOS (MTCMOS), Threshold Voltage (Vt), Leakage Current (IL), Spurious Power Suppression Technique (SPST), Most Significant Part (MSP), Least Significant Part (LSP).
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A Review on Various Shunt Active Filters
Atul Kushwaha, Prof. Chirag Gupta
Abstract: In this review paper we have studied various techniques of power filters designed for large-power applications, where complex digital control circuit and expensive batteries are often used. In this study, a simple and low-cost active power filters circuit using an analog-based hysteresis current controller and capacitive energy storage. The filter is intended to be a low-power add-on unit to reduce the AC harmonic currents of existing electronic equipment (e.g., personal computers), which impose nonlinear loads to the AC mains. The operation principle, design criteria, and control strategy of the proposed filter are discussed.
Keywords: Power Active Filters.
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