Jayalakshmi Institute of Technology

Dharmapuri, India

Jayalakshmi Institute of Technology

Dharmapuri, India
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Sivakumar N.,Jayalakshmi Institute of Technology
Journal of Electrical Engineering | Year: 2017

This paper proposes a new fuzzy logic controller for seven-level hybrid cascaded H-bridge inverter. The inverter is used for on-grid application of PV a system. Here a Sinusoidal pulse width-modulation (SPWM) technique is applied for obtaining carrier signals. Multi-Level Inverter technology have been developed in the area of high-power medium-voltage energy scheme. It is because of their advantages such as devices of high dv/dt rating, higher switching frequency, unlimited power processing, shape of output waveform and desired level of output voltage, current and frequency adjustment. This topology can be used there by enabling the scheme to reduce the Total Harmonic Distortion (THD) for high voltage applications. The Maximum Power Point tracking algorithm is also used for extracting maximum power from the PV array connected to each DC link voltage level. The Maximum Power Point tracking algorithm is solved by Perturb and Observer method. It has high performance with low Total Harmonic Distortion and reduced by this control strategy. The proposed system has verified and THD is obtained by using MATLAB/SIMULINK.The result is compared with the hardware prototype working model. © 2017, Universitatea Politehnica din Timisoara. All rights reserved.


Ragunathan S.,Jayalakshmi Institute of Technology
ICACCS 2013 - Proceedings of the 2013 International Conference on Advanced Computing and Communication Systems: Bringing to the Table, Futuristic Technologies from Around the Globe | Year: 2014

A Macro-Micro manipulator is a complex plant with high nonlinearity, and the equations of motion of a Macro-micro manipulator have infinite dimensions. Hence, the control problems for a macro-micro manipulator are challenging tasks, seeking a control strategy which is independent of precise plant mathematical model is of practical meanings. In this paper a novel data-based fuzzy adaptive control strategy for a macro-micro manipulator is presented, and procedures for designing a fuzzy adaptive controller are described based on the collected experiment data. Good result is observed in the fuzzy adaptive control experiment of a macro-micro manipulator, the vibration suppression and precision positioning performance is achieved. © 2013 IEEE.


Krishnamurthi P.,Alagappa Chettiar College of Engineering And Technology | Thenmozhi P.A.,Jayalakshmi Institute of Technology
Journal of Chemical and Pharmaceutical Research | Year: 2012

The ultrasonic velocity, density and viscosity for binary liquid mixtures of the n-alcohols namely 1-pentanol, 1- hexanol and 1-heptanol in toluene, carbon tetra chloride, benzene and dioxane at 301K have been measured. From these measured parameters adiabatic compressibility, free length, free volume and their excess values have been measured. The results have been analyzed and interpreted in terms of molecular interactions such as dipole-dipole interaction through hydrogen bonding between solvents and 1-alkanols have been observed. Further the experimental ultrasonic velocities of all these binary systems are compared with theoretical ultrasonic velocity.


Krishnamurthi P.,Alagappa Chettiar College of Engineering And Technology | Thenmozhi P.A.,Jayalakshmi Institute of Technology
Journal of Chemical and Pharmaceutical Research | Year: 2012

Ultrasound speed (u), density (ρ) and viscosity (η) have been measured for pure liquids and their binary mixtures formed from 1-octanol, and 1-decanol with non-polar solvents like toluene, carbon tetrachloride, benzene and dioxane at 301 K covering the entire mole fraction range of n-alcohols. From the experimental data, adiabatic compressibility (β), intermolecular free length (Lf), acoustic impedance (Z), have been computed. These parameters are used to discuss the nature and extent of intermolecular interactions between the component molecules. The experimental values have been correlated using Nomotos, Ideal mixture, Jungies, Impedence and Rao's relations.


Rajam K.,k-Technology | Rajendran S.,GTN Arts College | Saranya R.,Jayalakshmi Institute of Technology
Journal of Chemistry | Year: 2013

The inhibition efficiency (IE) of an aqueous extract of garlic in controlling corrosion of carbon steel in well water in the absence and presence of Zn 2 + has been evaluated by mass-loss method. The formulation consisting of 2 mL of garlic extract and 25 ppm Zn 2 + offers 70 inhibition efficiency to carbon steel immersed in well water. Polarization study reveals that this formulation controls the anodic reaction predominantly. FTIR spectra reveal that the protective film consists of Fe 2 + -allicin complex and Zn(OH) © 2013 K. Rajam et al.


Thamilarasi P.,Salem College | Ragunathan S.,Jayalakshmi Institute of Technology | Mohankumar E.,Government of Tamilnadu
International Review of Mechanical Engineering | Year: 2014

In this paper, the prominent factors, which yield better weld bead geometry of the robotic GMAW joints, were optimized. Taguchi parametric design and optimization approach has been applied to determine the optimized level of input parameter composition. Arc current, stick out, arc voltage and travel speed are taken as input parameters to determine the bead width. The statistical technique ANOVA has been used to check its significance. The results show that the input parameters have significant effect on deciding the weld bead width. The results were confirmed by further experiments. © 2014 Praise Worthy Prize S.r.l. - All rights reserved.


Sivakumar N.,Jayalakshmi Institute of Technology | Radhika P.,Adhiyamaan Engineering College
International Journal of Applied Engineering Research | Year: 2015

In this paper we investigate the fuzzy optimization of electric vehicle (EV) and home energy scheduling. Our objective is to minimize the total electricity cost while considering user com-fort preference. We take both household occupancy and EV travel patterns into account. The novel contributions of this paper lie in the exploitation of EVs as dynamic storage facility as well as de-tailed modeling of user comfort preference, thermal dynamics, EV travel, and customer occupancy patterns in a concrete optimization framework. Extensive numerical results are presented to illustrate the efficacy of the proposed design. Specifically, we show that the proposed design can achieve significant saving in electricity cost, allow more flexibility in setting the tradeoff between cost and user comfort, and enable to reduce energy demand during peak hours. We also demonstrate the benefits of applying the proposed framework to a residential community compared to optimization of individual household separately. © Research India Publications.


Sivakumar N.,Jayalakshmi Institute of Technology | Dayanadevi S.,Adhiyamaan Engineering College
International Journal of Applied Engineering Research | Year: 2015

The Photovoltaic (PV) based power generation systems are popular nowadays. In this PV based systems the voltage stress across the power devices and leakage current are the major issues in transformer-less grid connected photovoltaic system. To overcome the above drawbacks of the inverter based single stage transformer less grid connected photovoltaic system is presented in this paper. The advantages of low leakage current, reduced voltage stress, less passive components and no shoot through problem compared to other type transformers grid connected inverter system. The analytical model of leakage current based on grid connected PV system is derived and simulated using MATLAB /Simulink. Finally the performance of the system is experimentally verified; it shows the satisfactory operation in a grid connection mode. © Research India Publications.


Sivakumar N.,Jayalakshmi Institute OF Technology | Saravanan S.,Jayalakshmi Institute OF Technology
International Journal of Applied Engineering Research | Year: 2015

The present paper describes experiences of the use of monitoring and data acquisition systems (DAS) and proposes a new concept of a low cost DAS applied to decentralized renewable energy (RE) plants with an WSN interface. The use of such systems contributes to disseminate these plants, recognizing in real time local energy resources, monitoring energy conversion efficiency and sending information concerning failures. These aspects are important, mainly for developing countries, where decentralized power plants based on renewable sources are in some cases the best option for supplying electricity to rural areas. Nevertheless, the cost of commercial DAS is still a barrier for a greater dissemination of such systems in developing countries. Most energy projections show that current and expected future global energy demand patterns are not sustainable. Long-term projections indicate that the world energy demand may increase dramatically, with most of this increase taking place in developing countries. For instance, according to projections made by the World Bank and the International Monetary Fund, Asia and South America are believed to present higher growth rates than the rest of the world within the next decade. © Research India Publications.


Jeevanantham C.,Jayalakshmi Institute of Technology
International Journal of Applied Engineering Research | Year: 2015

This paper proposes an isolated coupled-inductor integrated dc–dc converter with a voltage doubler for solar energy applications. The proposed converter realizes high step-up voltage gain without incurring a high coupled inductor turns ratio by adapting a dual-voltage doubler circuit. In addition, the energy in the coupled inductor leakage inductance can be recycled on the primary side. Thus, the system efficiency is improved. Finally, a laboratory prototype for demonstrating the performance of the proposed circuit is implemented with voltage doubler 12.5-V input voltage, and a 280-V output voltage. The experimental results show that the peak efficiency of the proposed converter is about 95%. © Research India Publications.

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