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Leela S.,UniversityTamilnadu | Dash S.S.,SRM University
International Journal of Applied Engineering Research | Year: 2015

This paper deals with modelling and simulation of fourteen bus system using EZSI based DVR. A power electronic converter based series compensator that can protect critical loads from all supply side disturbances other than outages is called a Dynamic Voltage Restorer (DVR). The IEEE fourteen bus system is modelled using the elements of simulink and this system is simulated using matlab simulink. DVR is introduced in the lines nearer to the buses with low voltage. The results of fourteen bus system with and without DVR are compared and power quality improvement using DVR is demonstrated. © Research India Publications. Source

Pirabaharan P.,Anna University | Hariharan G.,UniversityTamilnadu
International Journal of Applied Engineering Research | Year: 2015

In this paper, we have established an efficient Bernstein operational matrix algorithm (BOMA) for solving a few boundary value problems (BVPs) arising in science and engineering. The main idea for obtaining the numerical solutions for these equations is essentially developed by reducing the differential equations with their initial and boundary conditions to a system of linear or nonlinear algebraic equations in the unknown exponential coefficients. Some numerical examples are given to demonstrate the validity and applicability of the proposed method. Numerical results obtained are comparing favorably with the exact known solutions. The proposed method in general is easy to implement, and yields good results. The power of the manageable method is confirmed. © Research India Publications. Source

Ezhilmaran D.,UniversityTamilnadu | Muthukumaran V.,UniversityTamilnadu
International Journal of Pharmacy and Technology | Year: 2016

The conjugacy search problem in a group G is the problem of recovering an x ϵ G from given g ϵ G and h=x-1gx. Ko et al. proposed a new public key cryptosystem on braid groups based on the hardness of the conjugacy problem. The foundation of this system is quite different from widely used cryptosystems on number theory, even if there are some similarities in design. Most of the authentication and signature schemes, such as digital signature scheme, blind signature scheme, proxy blind signature, Zero-knowledge Undeniable Signature Scheme which are based on conjugacy problem are computationally hard. In this article, we review the different types of conjugacy problems used in the various schemes of cryptography. © 2016, International Journal of Pharmacy and Technology. All Rights Reserved. Source

Maheswaran D.,TNPLTamilnadu | Rajasekar N.,UniversityTamilnadu | Priya K.,UniversityTamilnadu | Ashok Kumar L.,PSG College of Technology
Journal of Electrical Engineering and Technology | Year: 2015

Pulse Width Modulation (PWM) techniques are increasingly employed for PWM inverter fed induction motor drive. Among various popular PWM methods used, Selective Harmonic Elimination PWM (SHEPWM) has been widely accepted for its better harmonic elimination capability. In addition, using SHEPWM, it is also possible to maintain better voltage regulation. Hence, in this paper, an attempt has been made to apply Bacterial Foraging Algorithm (BFA) for solving selective harmonic elimination problem. The problem of voltage harmonic elimination together with output voltage regulation is drafted as an optimization task and the solution is sought through proposed method. For performance comparison of BFA, the results obtained are compared with other techniques such as derivative based Newton-Raphson method, and Genetic Algorithm. From the comparison, it can be observed that BFA based approach yields better results. Further, it provides superior convergence, reduced computational burden, and guaranteed global optima. The simulation results are validated through experimental findings. © The Korean Institute of Electrical Engineers Source

Vijay Anand V.,UniversityTamilnadu | Vijayabanu C.,UniversityTamilnadu
International Journal of Applied Engineering Research | Year: 2014

Employee engagement is an individual involvement and emotional binding in the organisation. Employee Engagement is the significant factor in the organisation to attain the organisational objectives. Unless the employee contributes in the company, definitely performance will not be there. Employee engagement has been a predominant role towards the performance along with other factors. The dimensions of employee engagement are influencing the organisation to have higher performance and better results in the current competitive business era. So the researcher has chosen this topic in competitive Insurance Industry especially with 150 samples. The objectives of the current research are to identify the factors influencing employee engagement, to understand the relationship between the demographic variables and employee engagement and to find out the levels of employee engagement. Researcher has applied tools such as chi-square test and ANOVA in this paper. According to the analysis, researcher found that there is a significant relationship between the factors viz., discretionary efforts, role clarity, learning behaviour, Growth & Development and employee engagement. Further researcher found that there is no relationship between person-organisation fit scale, leadership behaviour/effectiveness and employee engagement. © Research India Publications. Source

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