Vellamal Engineering College

Chennai, India

Vellamal Engineering College

Chennai, India
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Hepzibah A.,Rajalakshmi Engineering College | Senthil Kumar A.,Vellamal Engineering College | Joylin Rini R.,Rajalakshmi Engineering College
Lecture Notes in Electrical Engineering | Year: 2015

An interleaved soft switching boost converter for a hybrid power generation system is proposed. Hybrid renewable energy systems plays an important role in remote area power generation. Here the hybrid system is the combination of photovoltaic module and fuel cell. Whenever there is a failure in the Photo Voltaic module, due to less insolation or any other fault in the module, then fuel cell is used in generation of power. The output voltage of this hybrid system is very low. To increase the output voltage boost converter is required. In this, interleaved softswitching boost converter is connected which helps in the reduction of ripples in the output voltage. The main advantage of this is interleaved soft-switching boost converter is that, it minimizes the switching losses by adopting a resonant soft switching method. © Springer India 2015.

Aravindhan P.T.,Rajalakshmi Engineering College | Anandhan P.T.,Vellamal Engineering College
Advanced Materials Research | Year: 2014

The objective of the work is to compare between convergent, convergent-divergent nozzle and to analyse which has better performance in a miniature aircraft having vertical lift system. Comparison is done by having 2° and 4° attack angle at a free stream mach no 0.8 and to find the variation of pressures around, drag. CFD analysis has been performed for the miniature aircraft. Pressure forces, viscous forces, pressure coefficient and viscous coefficient are found for convergent nozzle and convergent-divergent nozzle. Also pressure variation at 2 ° and 4 ° angle of attack for Airfoil types AIG(smart fish) and NACA(Conventional) are found. It was found convergent-divergent nozzle is best suited with vertical lift having exit jet velocity 2700m/s. It is also found that airfoil produce less drag when attack angle is 4°. © (2014) Trans Tech Publications, Switzerland.

Jayasankar T.,Anna University | Arputha Vijayaselvi J.,King's College | Balaji Ganesh A.,Vellamal Engineering College | Kumar D.,Periyar Maniammai University
International Journal of Applied Engineering Research | Year: 2014

Research on TTS conversion is a large enterprise that shows an impressive improvement in the last couple of decades The essence of Text-to speech synthesiser is to convert text symbols into a continues sound signal that is indistinguishable from human speech. The quality of speech synthesis system in our knowledge is far from natural sounding. Compared to English and other European languages like French, Spanish etc. much research is not done in Indian languages. Especially in South Indian languages, the research works carried out are limited with only a few exceptions. This paper describes the design and development of an word and syllable based Concatenation Text to Speech Synthesis (CTTS) of South Indian Language of Dravidian Tamil and evaluate the performance of manual and automatic speech segmentation database used in TTS. A complete implementation of CTTS is composed of Text analysis, prosody control, and speech synthesis. A text analysis is the TTS front end deals with converting text in to pronunciation form, called Text Normalization and get the prosodic information that may be obtainable by analysing various underlying structures of the text. Speech synthesis retrieved the syllables from database and concatenated is produced good quality of speech. © Research India Publications.

Senthilnathan T.,Vellamal Engineering College | Parvathavarthini K.V.,Vellamal Engineering College | Parvathavarthini K.V.,Sa Engineering College | George S.M.,Vellamal Engineering College | George S.M.,Rmk Engineering College
Indian Journal of Environmental Protection | Year: 2012

A systematic investigation has been carried out to study the ground water quality, nutrient status and physico-chemical characteristics of Maraimalai Nagar Town, Tamil Nadu. Water for human consumption should be free from pathogenic agents and harmful chemicals, pleasant to taste and unable for domestic purpose. The study was carried out by collecting ground water samples from different localities in Maraimalai Nagar Town, an industrial area. In this sampling station around 220 SIDCO industries were located and the water samples were analysed for their physico-chemical charactetistics. The parameters, namely TDS, TSS, pH, total hardness, various metals, calcium, magnesium, electrical conductivity were compared with the ISO 10500 standards of drinking water quality of India . An attempt has been made to find the quality of the ground water is suitable for drinking purpose in Maraimalai Nagar, Tamil Nadu. The quality of water samples under study were above the desirable limit but within the tolerance level. The ground water in the sampling station has to be treated for infectious diseases. The study also included the corrélation coefficient analysis between the physic-chemical parameters. The significant values of the observed correlation coefficient is elaborately discussed in this paper and various suggestions to improve the water quality pertaining to the sampling station is also discussed. © 2012 - Kalpana Corporation.

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