Paper Title

IMPLEMENTATION OF FAULT TOLERANT MEMORY BASED UART THROUGH SPI INTERFACE

Abstract

In nanometer technologies, circuits are more and more sensitive to various kinds of perturbations. Alpha particles and atmospheric neutrons induce single-event upsets, affecting memory cells, latches, and flip-flops. They also induce single-event transients, initiated in the combinational logic and captured by the latches and flip-flops associated with the outputs of this logic. In the past, the major efforts were related on memories. However, as the whole situation is getting worse, solutions that protect the entire design are mandatory. Solutions for detecting the error in logic functions already exist, but there are only few solutions allowing the correction, leading to a lot of hardware overhead in non processor design. In this paper, we present a novel technique that includes UART architectures and an SPI for their implementations, which reduces the cost of dealys in any kinds of circuit.
KEYWORDS : UART,SPI

Paper Title

WIND ENERGY CONVERSION SYSTEM IS CONNECTED TO GRID WITH ASF & ANN CONTROLLER

Abstract

This study deals with a three-phase multifunctional grid-connected inverter interfaced with a wind energy conversion system (WECS) is described. The studied system consists of a permanent magnet synchronous generator (PMSG) based wind turbine, a rectifier and a three-phase voltage source inverter connected to the utility at the point of common coupling. To ensure the multifunctional feature, we propose a direct power control (DPC) which is applied to eliminate line current harmonics, compensate reactive power and feeding wind power into the utility. Simulation results are provided to demonstrate the effectiveness of the proposed system. The results show that the control algorithm of system is effective for eliminating harmonic currents, reactive power compensation and inject the active power available from the PMSG wind turbine into the load and/or grid, which allowed us to confirm the robustness of the proposed strategy.
KEYWORDS : PI controllers, ANN networks, Non linear loads

Paper Title

AN OPTIMIZED PROBABILISTIC APPROACH FOR OPTIMAL ECONOMIC DISPATCH, A CASE STUDY OF GESCOM

Abstract

The concept of probabilistic analysis has been gaining momentum in recent years as opposed to the more passive approach of the 19th century. A broad variety of complex strategies has been established for probabilistic modeling. A common theory behind each factor mentioned is that power systems are basically stochastic, a concept illustrated by the formulation and analysis of both input condition and case parameters as probability variables. The Optimisation Approach in the power system research reflects a primary examination of the importance of power systems for the future development of power resources, reliability and quality. In order to carry out the case study of the Gulbarga Electricity Supply Company Ltd. (GESCOM), a standard approach for economic dispatch with possible load variations has been suggested for this study.
KEYWORDS : Power system Optimization, Economic Dispatch (ED), GESCOM, PAVAGADA solar park

Paper Title

PERFORMANCE IMPROVEMENT OF VERTICAL AXIS WIND TURBINE WITH AIRFOIL GEOMETRY

Abstract

In this work, an airfoil geometry optimized for vertical-axis wind turbine applications is presented in the present studies, the effects of Gurney flaps on aerodynamic characteristics of a static airfoil and a rotating vertical axis wind turbine are investigated by means of numerical approaches. First, mesh and time step studies are conducted and the results are validated with experimental data in good agreement. Furthermore, mounting a Gurney flap at the trailing edge of the blade increases the power production of the turbine considerably. Increasing the Gurney flap height further increases the power production. The best performance found is obtained for the maximum height used in this study at 6% relative to the chord. This is in contrast to the static airfoil case, which shows no further improvement for a flap height greater than 0.5%c. Increasing the angle of the flap decreases the power production of the turbine slightly but the load fluctuations could be reduced for the small value of the flap height. The present paper demonstrates that the Gurney flap height for high solidity turbines is allowed to be larger than the classical limit of around 2% for lower solidity turbines.
KEYWORDS : Aerodynamics; CFD; flow characteristics; gurney flap; wind energy.