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Elango T.,Sri Balaji Chockalingam Engineering College | Senthil Kumar A.,Velammal Engineering College
International Journal of Ambient Energy | Year: 2016

This paper presents the simple voltage regulation scheme using a three-phase static VAr compensator (STATCON) for a stand-alone self-excited induction generator (SEIG) that uses variable-speed wind generation system. Most of the loads are inductive and need an equal amount of leading VArs, which is generated by the STATCON and injected at point of common coupling instantaneously. The one cycle control technique is considered and modified to implement for VAr compensation of SEIG voltage regulation. To emphasis the controller characteristics, a STATCON is designed for a 3-Ø, 0.75 kW, 415 V, 1.8 A Induction Machine and tested in simulation using MATLAB/SIMULINK software. © 2016 Taylor & Francis Source

Ramakrishnan H.V.,Sri Balaji Chockalingam Engineering College | Padmanathan A.,Dr. M.G.R. Educational and Research Institute
Journal of the Institution of Engineers (India), Part CP: Computer Engineering Division | Year: 2011

This paper is outlined with the handle time in relational query languages. The logic is based on advanced. Boolean and Comparison operators by allowing their operands to be sets of intervals. Proposed data modelling provides temporal retrieval capability using an extended logic for comparison and Boolean operators. The extended logic allows these operators to accept set of intervals and return results in the form of set of intervals. New syntax for retrieval statements is defined in order to separate the process of selecting entities (tuples relational calculas) and the process of selecting required values of temporal attributes from the chosen entities. The theme presented in this paper offer a good degree of flexibility in expressing different temporal requirements. Source

Elango T.,Sri Balaji Chockalingam Engineering College | Senthil Kumar A.,Velammal Engineering College
International Review on Modelling and Simulations | Year: 2013

This paper describe the methods employed to control voltage and frequency of a 3-Ø stand-alone self-excited induction generator (SEIG) driven by a variable speed wind turbine. An attempt made to control the terminal voltage of SEIG by using a 3-Ø diode clamped multilevel converter (DCMLC) based STATCOM operation. A 3-Ø diode bridge rectifier with a d.c chopper circuit is employed to control the frequency of generated voltage. The VAr required by the load and the machine owing to changes in magnetizing reactance's are compensated by DCMLC-STATCOM operate with full load excitation capacitance. To emphasis the controller characteristics, mathematical model of the controller is developed and implemented in MATLAB / SIMULINK software. © 2013 Praise Worthy Prize S.r.l. - All rights reserved. Source

Ramasamy P.,Sri Balaji Chockalingam Engineering College | Sampathkumar S.,Anna University
Composites Part B: Engineering | Year: 2014

Monitoring of drop impact damage is necessary because it produces invisible damage in composite materials without any visible mark on the surface. Monitoring of drop impact damage was carried out on Woven Glass Fibre Reinforced Polymer (WGFRP) composite laminate through Acoustic Emission (AE) technique. The significant AE parameters like signal strength, root means square value, counts and counts to peak were determined for drop impact damage. Impact damage tolerance was predicted using Artificial Neural Network (ANN) trained with AE parameters as input and impact damage tolerance as output. The predicated impact damage tolerance was with average error tolerance of 3.35%. The proposed network finds very good agreement for prediction of impact damage tolerance of impact damaged WGFRP composite laminate in real time application. © 2014 Elsevier Ltd. All rights reserved. Source

Rajiv Gandhi S.,Sri Balaji Chockalingam Engineering College | Sathis Kumar D.,C Abdul Hakeem College Autonomous | Srinivasan R.,Vellore Institute of Technology | Ibrahim Sheriff A.K.,C Abdul Hakeem College Autonomous
Asian Journal of Chemistry | Year: 2016

Transition metal complexes of Mn(II), Fe(III), Co(II), Ni(II) and Cu(II) ions have been synthesized from cinnamaldehyde and diethylenetriamine. The complexes have been characterized by elemental analysis, molar conductance, magnetic susceptibility, FT-IR, electronic spectra, 1H NMR, 13C NMR, ESR, mass spectra and thermal studies. Their ligand field parameters have also been calculated. Hydrolysis of ethyl acetate has been studied by using the complexes as homogeneous catalysts. The DNA cleavage activities of Schiff base and its metal complexes have been monitored by agarose gel electrophoresis method in the presence of hydrogen peroxide. The antimicrobial activities of ligand and its metal complexes have been examined on the fungi Candida albicans and Aspergillus niger and bacteria Staphylococcus aureus, Escherichia coli and Bacillus cereus. © 2016, Chemical Publishing Co. All rights reserved. Source

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