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Enhancement of Power Quality by using D-STATCOM
Salunkhe P N ; Tambe S S ; Tapre P C
Electrical Engineering
Year: 2016, Volume:3, Issue : 7
Pages: 70 - 74
A Static Compensator (STATCOM) is a flexible ac transmission system (FACTS) controller, which can either absorb or deliver reactive power to a power system. Distribution Static Compensator (DSTATCOM) is proposed for compensation of reactive power and unbalance caused by various loads (Sensitive and Non-Linear Loads) in distribution system. Distribution static compensator is based on the VSC principle. A D-STATCOM injects a current into the system to correct the voltage sag, swell and power factor. Distribution Static Synchronous Compensator (D-STATCOM) is an effective measure to maintain voltage stability and improve power quality of distribution system. An LCL filter has been used at the front end of a voltage source inverter (VSI), which provides better switching harmonics elimination while using much smaller value of an inductor as compared with the traditional L filter. A capacitor is used in series with an LCL filter to reduce the dc-link voltage of the DSTATCOM. This consequently reduces the power rating of the VSI. With reduced dc-link voltage, the voltage across the shunt capacitor of the LCL filter will be also less. It will reduce the power losses in the damping resistor as compared with the traditional LCL filter with passive damping. Therefore, the proposed DSTATCOM topology will have reduced weight, cost, rating, and size with improved efficiency and current compensation capability compared with the traditional topology. This paper deals with the modeling and control scheme of D-STATCOM. In this project by analyzing the different control techniques for designing the DSTATCOM & implementing the algorithm which will help in to design the model & working of DSTATCOM in MATLAB/Simulink for the required result.
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A Note on Length Structures Associated with Smooth Manifolds
Dr. (Smt.) Suwarnlatha N. Banasode ; Dr. T. Venkatesh; Savita G. Ravanavar
MATHEMATICS
Year: 2016, Volume:3, Issue : 7
Pages: 75 - 77
Metric structures on spaces on Euclidean and non-Euclidean spaces enable us to investigate the geometric properties of the domains and functions arising from them. In this paper we have considered the study of length structures on smooth manifolds under this setting.
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Optimization of Process Parameters in Drilling EN8 Steel using Taguchi Technique
Thushar K T ; T Bharadwaj
Mechanical Engineering
Year: 2016, Volume:3, Issue : 7
Pages: 78 - 83
The objective of proposed work is to optimize the process parameters like Cutting speed, Feed rate, point angle and Diameter of drill bit in drilling EN8 steel, based on key accuracy characteristics of drilled holes like Surface Roughness (Ra).
The various steps involved to achieve the above objective are as follows.
1) Determine the technique used to solve the present problem, i.e., Robust Parameter Design.
2) The objective functions are formed based on Taguchi’s quadratic loss function for each performance characteristics, i.e., Surface finish.
3) After the objective functions are formed, control factors and their levels are identified.
4) The values for the control factors are selected based on operators (Drilling operators) experience, literature survey and some pre-experimental analysis.
5) The matrix experiments are conducted on EN8 steel material.
6) After the experiments are conducted, response variables are tabulated and analysis is conducted.
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Human Computer Interaction using Eyes
Jaimin Patel ; Bhagwat Kakde; Dr. Manish Jain
Electronics & Communication Engineering
Year: 2016, Volume:3, Issue : 7
Pages: 84 - 91
The paper presents a novel idea to control computer mouse cursor movement with human eyes. In this paper, a working of the product has been described as to how it helps the special people share their knowledge with the world. Number of traditional techniques such as Head and Eye Movement Tracking Systems etc. exist for cursor control by making use of image processing in which light is the primary source. Electro-oculography (EOG) is a new technology to sense eye signals with which the mouse cursor can be controlled. The signals captured using sensors, are first amplified, then noise is removed and then digitized, before being transferred to PC for software interfacing.
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Comparision of Physical Properties between Natural Sand and Manufactured Sand
Meghashree M ; Arpitha K; Roopa
Civil Engineering
Year: 2016, Volume:3, Issue : 7
Pages: 92 - 96
Sand is an important raw material in construction industry. It is the major fine aggregate. There is scarcity of natural sand in large scale because of increased sand mining in river beds leading to lack of natural sand reserves, urban expansion, local legislations and environmental constraints. The industry must find alternatives to meet the growing demand for fine aggregates. So an alternative of this, manufactured sand is produced by the companies to meet the demands. The natural river sand is the product of sedimentation and this river sand contains more impurities than manufactured sand. So river sand sometimes cannot be used for important concreting works. So suitability of manufactured sand is tested. Therefore suitability of manufactured sand is checked by conducting the tests related to physical properties of fine aggregates like ‘fineness, bulk density and specific gravity. And tests on fresh concrete using manufactured are also tested. The results of the tests are compared with natural sand. This paper puts forward the suitability of manufactured sand to fulfill the unavailability of natural sand. Therefore manufactured sand can be used as an alternative for natural sand which maintains the eco balance.
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Image Retrieval with Ambiguity Resolution using Enhanced Graph based Ranking Model
Raviraj S. Patkar ; S. Pratap Singh
Computer Engineering
Year: 2016, Volume:3, Issue : 7
Pages: 97 - 101
Image ranking is being used by commercial search engine giants to improve the precision of images searched. Traditional image retrieval systems used are based on keyword search. In such query based systems information from the image is not utilized. Manifold Ranking (MR) technique has been successfully applied for content based image retrieval. In this paper an attempt has been made to enhance the novel graph based Efficient Manifold Ranking (EMR) approach to solve ambiguity issue. The main objective is to annotate the images with some manually defined concepts using visual and context based features for learning a latent space. By feeding the latent vectors into existing classification models, it can be applied to multimedia annotation which is one of the most important problems in multimedia retrieval. This paper also aims to show a more sophisticated algorithm to directly incorporate the discriminate information in training.
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Structural Upgrading of Concrete by using Mineral Based Composites
R. Kirthiga ; Karthikraja S
Civil Engineering
Year: 2016, Volume:3, Issue : 7
Pages: 102 - 105
Now a days, many of these structures have reached the end of their planned service life. Therefore there is a need for repairing and rehabilitation to strengthen the structures. A technique used for strengthening concrete structures is retrofitting. In this paper, retrofitting is done by wrapping and strengthening the concrete surface by Glass Fiber Reinforced Polymer sheet (GFRP) using binders. In this work two types of binder are used namely epoxy and cementitious composites. Generally epoxies have a good bonding capacity and also good approach to strengthen the structures, but have some drawbacks in form of incompatibilities with the base concrete. To overcome this, new class composite called Mineral based composites are being used. From the result, it was concluded that compressive strength and stiffness for concrete using MBC as binders are comparable with epoxy binders apart from being economical and nonhazardous. It also inferred that strength increases with increase in number of layers of wrapping.
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Minimization of Make Span of a Flexible Job Shop Problem with the Approach of Genetic Algorithm
N. Gopikrishna ; B. Sathish Kumar; S. Pradeep; V. Thirupathi
Mechanical Engineering
Year: 2016, Volume:3, Issue : 7
Pages: 106 - 112
Present paper proposes the Genetic Algorithm which helps in selection of a machine tool for FJSP (flexible job-shop scheduling problems), which may result in reduction of a make span. The genetic algorithm (GA), a class of theoretical search algorithms, which is effective in finding optimal solutions to variety of problems and it comprises as follows:
1) An effective selection method.
2) New crossover operator uses the combination of genes concept.
3) New mutation operator helps in maintaining overcoming premature convergence and population diversity.
The aim of this research is to find a schedule that minimizes the “MAKE SPANâ€. The experimental results “of 2 jobs 3 operations 3 machine models provided below†proves this phenomena.
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Analysis of Secure Routing Scheme Against Vampire Attack for MANET
Pratibha Rathore ; Ashish Tiwari; Himangni Rathore
Computer Engineering
Year: 2016, Volume:3, Issue : 7
Pages: 113 - 118
Wireless networks are gaining popularity to its peak today, as the users want wireless connectivity irrespective of their geographic position. There is an increasing threat of attacks on the Mobile Ad-hoc Networks (MANET). Vampire attack is one of the security threat in which the traffic is redirected to such a node that actually does not exist in the network. It’s an analogy to the Vampire in the universe in which things disappear. The node presents itself in such a way to the node that it can attack other nodes and networks knowing that it has the shortest path. MANETs must have a secure way for transmission and communication which is quite challenging and vital issue. In order to provide secure communication and transmission, researcher worked specifically on the security issues in MANETs, and many secure routing protocols and security measures within the networks were proposed. Previously the works done on security issues in MANET were based on reactive routing protocol like dynamic source routing (DSR). Different kinds of attacks were studied, and their effects were elaborated by stating how these attacks disrupt the performance of MANET. The general purpose of this project is to study the effects of Vampire attack in MANET using Reactive routing protocol Ad-Hoc on Demand Distance Vector (AODV). Comparative analysis of Vampire attack for both protocols is taken into account. The impact of Vampire attack on the performance of MANET is evaluated finding out which protocol is more vulnerable to the attack and how much is the impact of the attack on both protocols. The measurements were taken in the light of throughput, end-to-end delay and network load. Simulation is done in Network Simulator. (NS-2).
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An Experimental Study on Partial Replacement of Cement by SBCA for M-25 concrete
Arshree khan ; A.k sexena
Civil Engineering
Year: 2016, Volume:3, Issue : 7
Pages: 119 - 121
In an emerging country like India, the agriculture plays an important role, especially when it comes to the production of sugarcane. India is the second largest country in the production of sugar after Brazil. Since sugar is made from Sugar cane, the residue left after using it in factories is termed as bagasse ash. Bagasse is disposed of in landfills and is now becoming an environmental burden. In this experimental research work concrete cubes, beams and cylindrical columns of M25 grade were casted and tested to examine various properties of concrete like workability, compressive strength, split tensile strength, and flexural strength. Sugar cane bagasse ash was partially replaced with cement at 3, 6, 9 and 12 % by weight of cement in concrete.
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Abstract
