Volume 06 Issue 01
THE OUTBREAK OF COVID-19 AND ITS IMPACT ON STOCK PRICES
Harishma P Mohandas, Dr. Vineetha S Das | pp: 1-4 | Purchase PDF
Abstract: The spread of Covid 19 has had unprecedented consequences on the world economy. It has affected both developing as well as developed economies. The stock market is a key driver in the development of any economy. It helps the industry as well as investors alike. The pandemic and the lockdown had a very bad effect on the individuals as well as the nation. This study examines the impact of the lockdown announcement imposed by the Indian government on the different leading sectors of the economy. Nifty Auto, Nifty Bank, Nifty Financial Services, Nifty FMCG, Nifty IT, Nifty Media, Nifty Metal, Nifty Pharma, Nifty Private bank, Nifty Realty, Nifty Oil & Gas, Nifty Consumer Durables and Nifty healthcare are sectors of NSE taken for the study. Event study method is used for this analysis. To study the impact of an event, most of the studies have used the event study method in the field of economics and finance. Data were collected from the NSE website.
REAL TIME SIMULATION OF DFIG BASED WECS SYSTEM USING MATLAB
Sudip Das, Subhasis Bandopadhyay, Risav Das | pp: 5-7 | Purchase PDF
Abstract: The present research work deals with the control of grid frequency by controlling the operation of doubly fed induction generator and also control regulation of active power of demand and Supplied by grid with help of doubly fed induction generator. The evolution of technology Related to wind systems industry leaded to the development of a generation of variable speedWind turbines that present many advantages compared to the fixed speed wind turbines. These Wind energy conversion systems are connected to the grid through Voltage Source Converters (VSC) to make variable speed operation possible. The studied system here is a variable speed Wind generation system based on Doubly Fed Induction Generator (DFIG). The rotor side Converter (RSC) usually provides active and reactive power control of the machine while the Grid-side converter (GSC) keeps the voltage of the DC-link constant. The additional freedom of Reactive power generation by the GSC is usually not used due to the fact that it is more preferable to do so using the RSC. This paper deals with the introduction of Doubly fed induction Generator, AC/DC/AC converter control and finally the MATLAB simulation and build the Model in D-space platform, for isolated Induction generator as well as for grid connected Doubly Fed Induction Generator and corresponding results and wave forms are displayed.
IoT based Smart Metering System
Debarun Das, Subhasis Bandopadhyay, RupamSaha, Abhradeep Roy, Tanuj Roy | pp: 8-11 | Purchase PDF
Abstract: The emerging IoT concept recently in our lives, has offered the chance to establish energy efficient smart devices, systems and cities. Due to the urgent need for conserving energy, this paper proposes an IoT based energy efficient wireless smart metering system design. It competes with the existing meters as being a low cost completely integrated metering system. It offers an ease for the users in the form of a database for the electricity supplier company. The proposed system design has an accuracy level of 98% and it is about 28% lower cost than its peer in the global market. The proposed design reduced the power consumption by 12%.
COMPARATIVE ANALYSIS OF CFD TURBULENCE MODEL FOR A SUPERSONIC NOZZLE AT DIFFERENT CONICAL ANGLE
M.AJITH, M.KANNIVEL, P.YOGESSHWARAN, S.YOKESHWARAN, D.THANIKAIVEL MURUGAN | pp: 12-17 | Purchase PDF
Abstract: A rocket nozzle is a mechanical device which was to design the control of rate of flow, speed, direction and pressure of stream that exhaust through it. There are various types of rocket nozzles which were used depending upon the mission of the rocket. This analysis was over a convergent divergent rocket nozzle. The objectives are to measure the pressure and Mach number variation within convergent divergent rocket nozzle with different divergent angle. In this paper computational Fluid Dynamics (CFD) Analysis of various performance parameters like static pressure and the Mach number are studied in detail for a rocket nozzle from Inlet to exit by using Ansys Fluent software. From the public literature survey the geometry of the co-ordinates are taken. A two- dimensional convergent divergent nozzle model is used for the analysis and the governing equations were solved using the finite-volume method in ANSYS FLUENT software. The divergent angles used for analysis were 5°, 9°, 11° 15°,20°.The boundary conditions of the nozzle are specified based on literatures revised. The created nozzle geometry is solid works then exported to ANSYS AUTODYN for meshing. The meshed geometry was imported in the analysis software package FLUENT. The fluid inside the nozzle subject to supersonic speed in standard k-epsilon model and spalart allmaras pressure, density, viscosity along with other details were noted down. The pressure contour and Mach number contour particular nozzle models were plotted. The simulation performed in steady state condition, where oblique shock occurred at flow velocity greater than Mach number 1 was captured. After the simulation the results revealed that the divergence angle varies the Mach number and other performance parameters also varies. The divergent angle increases for each simulation and the results were compared in order to suggest the better nozzle model.
DESIGN AND FABRICATION OF TRIARM COAXIAL HEXACOPTER
Allwyn prince.A, Bhuvanesh.S, Rajesh.M,Varun kumar.V | pp: 18-22 | Purchase PDF
Abstract: Drones in agriculture can be used for a variety of different task aimed to increase farm crop yields and accurately monitor growth status, simultaneously decreasing time labour and resources. There are too many technologies involved in today’s Agriculture out of which spraying pesticides using drones is one of the emerging techniques . Manual pesticide spraying causes many harmful side effects to the personnel involved in the spraying process. While for some specific task a medium sized drone can be used. So that we opted for tri-arm coaxial hexacopter because it has proper and distributed downwash that is suitable for spraying liquids at specified point in the flow field for proper distribution of spray and reducing the wastage .This paved the way to design a drone mounted with spraying mechanism having 360kv high torque brushless motor, 30A esc with one shot, 2500Mah lithium polymer battery,2 blade glass fibre nylon gray propellers, Ardupilot power module, 6 inch transmitter, FS-IA6B Receiver, 32 bit flight controller with aluminium tubes and plates fixed in the drone for monitoring and spraying process and this type of drone reduce time , number of labour and cost of pesticide application.
DESIGN AND ANALYSIS OF MODIFIED FIR FILTER FOR SIGNAL PROCESSING APPLICATION
S.Catherine Priya, A.Anjaline Jayapraba | pp: 23-28 | Purchase PDF
Abstract: The Need for high performance and low power digital signal processing is getting increased. Finite Impulse Response filters are one of the most widely used fundamental devices performed in DSP system. The performance analysis of parallel FIR digital filter, These entire filter structures are designed based on Modified Carry Select Adder and Ripple Carry Adder. Exchanging multipliers with adder is advantageous because adders weight less then multipliers in terms of silicon area. The performance of parallel FIR filter structure based on Ripple Carry Adder and Carry Select Adder will be compared.
Investigating the Link Between Derivative Markets and Economic Development
Suryalekshmi S, Vinod M | pp: 29-34 | Purchase PDF
Abstract: The derivatives market is a financial market for derivatives, such as futures contracts or options which are financial products generated from other assets. It has a direct impact on the financial system and makes significant contributions to numerous parts of the economy as a whole. However, due to a lack of supporting facts, a controversy about its influence on economic development has erupted. In the light of this scenario, this study analyses the dynamic relationship between the financial derivative markets and economic development in selected countries (India, China, Japan & USA). All the data required for this study have been obtained mainly from secondary sources. Information on the derivatives market is collected from Bank for International Settlements (BIS) database and data of other variables used in this study is obtained mainly from International Financial Statistics (IFS). A Granger causality test is performed to find the influence of the derivatives market on economic development. The study will be a guiding tool for the investors and researchers who is interested to look onto the derivative markets in present and future.
Design and Analysis of Three-Phase UPQC under Steady-State and Dynamic-State Conditions
Kousar Jan, Geeta Pathak | pp: 35-40 | Purchase PDF
Abstract: This paper investigates the design and performance of a three-phase UPQC in steady state and dynamic state conditions. The UPQC consists of the DC link used to connect the voltage compensators in back-to-back arrangement, which is shared by both series and shunt connections. The UPQC’s shunt compensator adjusts for load current harmonics. The series compensator addresses problems regarding grid-side power quality, such as grid voltage sags and swells, by injecting a suitable voltage in phase with the grid voltage during voltage sag and out of phase during voltage swell conditions. An improved SRFT (Synchronous Reference Frame Theory) controller has been used with the series and shunt compensator. To maintain the DC-link voltage, the shunt compensator uses a PI controller. The steady state and dynamic performance of the developed model are examined by utilizing Matlab-Simulink and a nonlinear load.
Experimental Investigations on Resistance Spot Welding Process during Joining of E34 SS4012A Grade Low Alloy Steel
Himanshu Krishna Rai, Maneesh Tewari, Sandeep Kumar, Arun Kumar Chaudhary | pp: 41-45 | Purchase PDF
Abstract: The welding input parameters have significant impact on weld joint of a quality. Weld-bead geometry, mechanical attributes, and distortion are a few examples of properties that can be used to describe the joint quality. HR E34 low alloy steel is extensively used in the automobile industry. The material is a high-quality steel that differs from conventional mild steel in that it possesses a special combination of desirable properties. These steels have exceptional yield strength, notch toughness, fatigue characteristics, weldability, and formability. The present article reports on the investigations into the input parameters of resistance spot welding to improve weld quality and weld strength. In order to conduct the experiments, the One-Factor-at-Time method was adopted. The welding current, weld time and electrode pressure were selected as variable input parameter. The output characteristic measured was the tear strength of the welded joint. The experimental results revealed that the welding current of 15kA, welding time of 17 cycles and electrode pressure of 8 bar provided the maximum possible tear strengths of the spot weld joint. The maximum variation in the tear strength of the welded joint was observed by the variation in the welding current.
Performance of Single Phase DVR Using Conventional PI AND ANN Controllers
Tannu, Geeta Pathak | pp: 46-54 | Purchase PDF
Abstract: This paper proposes conventional proportional integral (PI) controller and artificial neural network (ANN) controller of single phase dynamic voltage restorer (DVR) to enhance the performance of distribution system. The main contribution of this work is designing an ANN controller by using the data obtained from the conventional PI controller for single phase DVR and comparing the performance of both the controllers. For designing the conventional PI controller, two different PI controllers are used for d-axis and q-axis respectively. The optimal PI control parameters are determined using the Zeigler-Nichols method. All the values obtained from the PI controller are then used to train the ANN. The Levenberg Marquardt back propagation algorithm is used as the ANN controller’s training algorithm. The goal of ANN controller is to minimize the error between the actual value and the reference value. After the completion of ANN training the ANN controller is installed in place of PI controller. To validate the effectiveness of the PI control and ANN control, three scenarios are included i.e. sag, swell and harmonics conditions. The ANN training and system design is done using MATLAB/Simulink.