Prasad V Potluri Siddhartha Institute Of Technology

Vijayawāda, India

Prasad V Potluri Siddhartha Institute Of Technology

Vijayawāda, India
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Somlal J.,K L Universityap | Rao M.V.G.,Prasad v Potluri Siddhartha Institute of Technology | Karthikeyan S.P.,Indian Central Power Research Institute
IEEE Region 10 Annual International Conference, Proceedings/TENCON | Year: 2017

This paper explores on experimental investigation of Shunt Hybrid Active Power Filter (SHAPF) for mitigation of harmonics and reactive power. In the present work, a Fuzzy Logic Controller (FLC) is implemented for generating desired harmonic reference currents and for regulating the DC side voltage of SHAPF. To efficiently utilize DC side voltage, Space Vector Pulse Width Modulation (SVPWM) is used for generating desired pulses required for Voltage Source Converter (VSC) in shunt Active Power Filter (APF). Experimental analysis has been carried out to assess the proposed control scheme. The control algorithm of the SHAPF is realized in digital domain using Spartan 6 Field-Programmable Gate Array (FPGA) controller. The fundamental necessities for the application structure require careful selection and configuration of elements of SHAPF. The hardware design of components of SHAPF is exhibited in this paper. The outcomes of this paper confirm the viability of SHAPF through 150V/1.5kVA experimental setup. © 2016 IEEE.

Deepak B.S.,Prasad V Potluri Siddhartha Institute Of Technology | Takeshore K.,Defence Electronics Research Laboratory DLRL | Kumar P.R.,Prasad V Potluri Siddhartha Institute Of Technology | Sairam C.,Defence Electronics Research Laboratory DLRL
Progress in Electromagnetics Research Letters | Year: 2017

This paper presents the design of a wideband blade shaped monopole antenna with a horizontally mounted aluminium tube on top of the blade covering 135–175 MHz frequency band using Electromagnetic Simulation software (CST Microwave Studio™) along with a matching network whose characteristics have been evaluated by the Optimal Matching Network Identifier (OMNI) algorithm. OMNI algorithm is a search technique used in computing, to find the optimum solution. The conventional quarter wavelength monopole antenna is a narrow band antenna with bandwidth of the order of 5% to 10% at its centre frequency. In order to increase the bandwidth of the antenna, a proper matching network has been incorporated along with it. Toroidal inductor based matching networks have been designed, and their characteristics are evaluated using Optimal Matching Network Identifier (OMNI) program in MATLAB software. By consolidating MATLAB and CST simulated results, the antenna prototype along with the optimal matching network has been practically implemented, and corresponding results have been verified. The details of simulated and measured results are also included. The proposed antenna finds numerous applications in various wideband communication systems. © 2017, Electromagnetics Academy. All rights reserved.

Swathi R.,Prasad V Potluri Siddhartha Institute of Technology | Sreenivas A.,Gandhi Institute of Technology and Management
Journal of Theoretical and Applied Information Technology | Year: 2017

It is a challenging task to attain significant automatic registration between the two satellite images due to variation in illumination and resolution of the images, dissimilar perspectives and the local deformations within the image. These concerns are rectified by an automatic registration scheme depends on a hybrid invariant feature combination of both Speeded-Up Robust Features (SURF) and Binary Robust Invariant Scalable Keypoints (BRISK). In the registration procedure, this feature combination speeds up the feature extraction and matching. Here, it makes the matching point pairs distributed consistently in satellite images and also further enhance the accuracy of input image rectification. Experimental results proves that the proposed scheme is very superior in Image Registration (IR) than the existing methods. © 2005 - Ongoing JATIT & LLS.

Vandana K.I.V.,Prasad v Potluri Siddhartha Institute of Technology | Suman K.N.S.,Andhra University | Viswabaskaran V.,Ceramic Research Center
AIP Conference Proceedings | Year: 2017

The objective of the present work is to characterize different mechanical properties of a nano composite made out of a combination of nano alumina and nano graphene. The nano powders of alumina and Graphene were mixed using High Energy Ball Mill and weight ratio of Al:G-C was maintained in the range of 0 to 2wt%. The prepared alumoorganic nano Composite Powders were compacted by Uniaxial Pellet Press and Graphene Toughened alumina (GTA) based composites were sintered in inert atmosphere at 1600°C using Hybrid Microwave Furnace. XRD and SEM studies are conducted on these specimens. Density and hardness tests are also performed on these specimens. In addition, wear and fracture toughness tests will also be carried out. In order to strengthen the experimental observations obtained, theoretical interpretation will be given to enhance the present work. © 2017 Author(s).

Maha Lakshmi T.,Prasad V Potluri Siddhartha Institute of Technology | Sreenivas A.,Gandhi Institute of Technology and Management
Journal of Theoretical and Applied Information Technology | Year: 2017

Noise estimation in digital images plays an important role in various kinds of applications such as medical imaging, video processing and communication systems. Noise density estimation from an image can help to analyze the channel properties of a communication system. Some authors have been described with a few algorithms to estimate noise present in the images in the spatial and frequency domain. The quality of a captured image through image acquisition devices like camera or sensor will not be noise free because of some parameters like circuit noise and atmosphere conditions. The main objective of this project is to evaluate the noise levels at different parts of the image with the help of a new algorithm Interval Type-2 Fuzzy Sets Filter (IVT2 FSs) and Genetic algorithm (GA). In this, we have estimated the performance in terms of the Structural Similarity Index Metric (SSIM), Peak Signal to Noise Ratio (PSNR), Mean Square Error (MSE) and Noise Variation (NV). © 2005 – ongoing JATIT & LLS.

Mounika M.,Prasad V Potluri Siddhartha Institute Of Technology
Materials Today: Proceedings | Year: 2015

Characterization, processing, manufacturing techniques, chemical treatment and applications of cellulose nanocomposites are the concerns of the work. With awareness to develop novel materials that are eco- friendly and biodegradable cellulose nanocomposites came into existence. This paper provides an general idea of recent advancements made in the field of cellulose based nanocomposites with particular emphasis on applications. Cellulose nanofibers extracted from bio waste are commercially interesting as they adopt renewability and furnish new products with a combination of properties. Many researchers tuned their path in a rather different direction which includes the production of all cellulose composites(ACC) in which the reinforcement as well the matrix is cellulose. This review summarizes why and what questions about cellulose composites. © 2015 Elsevier Ltd.

Rao A.P.C.,Prasad V Potluri Siddhartha Institute Of Technology | Babu C.S.,Jawaharlal Nehru Technological University Kakinada
7th International Conference on Intelligent Systems and Control, ISCO 2013 | Year: 2013

Multilevel converter technology has emerged as a very important alternative in the area of high-power medium-voltage energy control. Several topologies for multilevel inverters have been proposed over the years, the most popular cascaded H-bridge apart from other multilevel inverters is the capability of utilizing different dc voltages on the individual H-bridge cells which results in splitting the power conversion amongst higher-voltage lower-frequency and lower-voltage higher-frequency inverters. Considering the cascaded inverter to be one unit, it can be seen that a higher number of voltage levels are available for a given number of semiconductor devices. In this paper multilevel converter with different voltage levels are considered and simulation results are presented in terms of total harmonic distortion (THD). Finally generalized expression for highest order harmonic based on switching frequency and number of levels is derived and fed to BLDC drive. © 2013 IEEE.

Srinivasababu N.,Prasad V Potluri Siddhartha Institute Of Technology | Rao M.M.,Sri Viveka Institute of Technology | Kumar J.S.,Jawaharlal Nehru Technological University Anantapur
Indian Journal of Fibre and Textile Research | Year: 2010

Turmeric fibre has been extracted from the stem and petiole of Tekurpeta and Cuddapha turmeric (Curcuma longa) and then used for the preparation of turmeric fibre reinforced polyester composites. For enhancing the bonding between fibre and matrix, one set of turmeric fibres is chemically treated with NaOH, KMnO4 and H2SO4 while another set is treated with only NaOH at varying chemical concentration and treatment time. The composites of Cuddapha turmeric stem fibre treated with 0.25 M NaOH for 13 h (CT-4 treatment) and Tekurpeta turmeric stem fibre treated with 0.125 M NaOH for 45 min, 0.01265 M KMnO4 for 5 min and 0.0000075 H2SO4 for 5 min (CT-1 treatment) show the highest tensile strength (36.01 MPa) for CT-4 and tensile modulus (744.32 MPa) for CT-1. The density of the composites shows decreasing trend with the increase in volume fraction of fibre in all the cases; density of Cuddapha turmeric composites being 956.77 kg/m3 the lowest among all the other composites studied at maximum volume fraction of fibre.

Rao C.S.,Prasad V Potluri Siddhartha Institute of Technology | Sudhakar A.,P.A. College
Applied Computational Electromagnetics Society Journal | Year: 2015

A finite length biconical antenna has standing waves existing due to its abrupt discontinuity at the terminals and results in band width limitation. An appropriate termination of these terminals can enhance its bandwidth to a considerable extent and make it truly wide band. A finite biconical antenna with its edges terminated in thick loop (circular) is proposed and its radiation characteristics are analyzed for different values of 'βr'. Where 'β' is the wave number and 'r' is the length of the antenna. Compact antennas for ultra wide band (UWB) and above are in demand for modern communications and the proposed antenna meets the wide band requirement at UWB and above such as X, Ku, K bands with very low return loss. © 2015 ACES.

Phanindra G.,Prasad V Potluri Siddhartha Institute Of Technology | Raju C.P.,Prasad V Potluri Siddhartha Institute Of Technology
International Conference on Electrical, Electronics, Signals, Communication and Optimization, EESCO 2015 | Year: 2015

This paper acquaints power flow control and power flow studies for a power system with flexible ac transmission system (FACTS) devices. The power system power flow control deals with the task of taking remedial measures against overloads and non linear loads in the system due to the occurrence of contingencies. For power flow studies, the modelings of FACTS devices are discussed. Several power flow programs are created to model the FACTS devices. The paper presents a reliable method to solve the nonlinear load flow equations by developing a Newton-Raphson method with UPFC. The particle swarm optimization technique (PSO) is on of the evolutionary optimization method which is used to reschedule the generation. Power flow study programming was accomplished by using MATLAB. PSO method is implemented along with UPFC device to reschedule the generators to maximize net savings. Convergence test studies have been performed on standard IEEE 30-bus network to show that the proposed method is effective and robust under various conditions like with and without UPFC FACTS devices. © 2015 IEEE.

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