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This paper proposed a method of non-linear sliding(NLS) surface based control strategy for controlling the dc link voltage of unified power quality conditioner (UPQC) to compensate the current harmonics, sag/swell and voltage unbalance. The proposed non-linear sliding surface depends on controlling the DC-link capacitor voltage so that the damping ratio of the system changes from its initial low value...
Bulk transfer of power requires EHV (Extra High voltage) and UHV (Ultra High voltage) Transmission lines. After thorough study of characteristics and specifications implemented in other parts of the world and related equipment based on insulation coordination studies, CEA working group decided next AC Transmission voltage in the country as 765 kV (Nominal Voltage), with 800 kV as system highest voltage...
MANETs hold the potential to replace the existing wireless technology mainly because of the features it provides like ease of deployment, no need of infrastructure, support of dynamic topology, etc. Therefore, addressing the issues of MANETs is very important. Security of MANETs has always been an important issue affecting their reliability and even their usability and that of routing algorithms plays...
Person re-identification is to match the appearance based images of an individual who has already been captured by different camera perspectives. This paper presents an appearance based model for person re-identification. It consists of the formation of prototypes followed by a matching strategy. The prototypes are discovered from the visual appearances among the individuals with similar characteristics...
Sensor networks are deployed for real-time monitoring of large objects and systems such as volcanoes, bird nesting habitats, chemical plants, bridges and civil structures. A network consists of a large number of sensor nodes, each of which consists of a CPU with memory, a battery, one or more sensors and a radio trans-receiver. The nodes are deployed randomly over the terrain associated with the application...
One of the main application of Synthetic Aperture Radar (SAR) data is developing the monitoring system for various applications like land cover and land use dynamics, vegetation mapping, canopy characterization and natural hazards by discriminating the change areas between two different dates images. In this paper, KLT (Kanade-Lucas-Tomasi) tracker has been applied on two different dated (i.e. April,...
In this paper, design algorithms for implementing controllers for DC to AC converter and DC to DC converter using Field Programmable Gate Arrays (FPGA) are presented. We used DC to AC converter proposed in [1], which uses free oscillation and discrete energy injection technology for our experiments. For DC to DC converter, Cuk converter [2] was used in our experiments. The controller of DC to AC converter...
In this paper ac/dc microgrid is implemented consisting of ac/dc loads and sources, operated in the grid connected mode and isolated mode. Multiple conversions like ac/dc, dc/ac can be reduced by ac/dc microgrid. Restructure of power system, increase in power demand and environment concerns are causing a focus on the distributed generation system with renewable energy. Photovoltaic system and wind...
In this paper, we have proposed a novel K-means algorithm with modified Cosine Distance Measure for clustering of large datasets like Wikipedia latest articles and Reuters dataset. We are customizing Cosine Distance Measure for computing similarity between objects for improving cluster quality. Our method will calculate the similarity between objects by Cosine Distance Measure and then try to bring...
In this paper, interactions of amine group (NH2) with pristine Boron Nitride sheet (BN sheet) has been investigated using a density functional theory based ab-initio approach. Stability and electronic properties have been analysed at distinct positions of NH2 on 2-D Boron Nitrite sheet. It has been observed that on placing the NH2 group at the centre of the hexagon of the BN sheet, it becomes metallic...
This paper presents the double stage solar photovoltaic (PV) grid interfaced power generating system using two-level twelve-pulse double bridge voltage source converter (VSC) for large capacity plants with improved power quality. The maximum power is tracked with variable step incremental-resistance (INR) maximum power point tracking (MPPT) method and the maximum power obtained is transferred to the...
After intensity value, texture is another significant characteristic which could be used to describe an image. In this paper, a critical analysis based on texture features has been carried out to develop a decision-tree based land cover classification technique for SAR image. The individual role of textural measures like mean, variance, lacunarity, entropy, homogeneity, contrast, dissimilarity, second...
In Wireless Sensor Network (WSN), due to limited battery energy, reduction of energy consumption is a challenging issue. In a typical clustered WSN, decisions can be taken locally at (cluster level) as well as globally at a central Sink. Local decision making requires information exchange among neighbor clusters. In this work, a network coding based opportunistic relaying strategy has been proposed...
A miniaturized wideband patch antenna loaded with artificial ground structure is proposed and presented. The antenna structure is composed with slot loaded patch with the optimized artificial ground structure called reactive impedance surface (RIS). By introducing RIS below the patch the size of antenna reduced by 23.52% and bandwidth is increased by 78.26% as compared to the simple patch. Total impedance...
The gas turbine is an extremely important component for the automotive and aviation industry. It works by converting the energy obtained by fuel combustion into some form of mechanical power. Therefore, controlling the input fuel going to the turbine is an important aspect of the gas turbine system. Therefore, an efficient controller design is required which can control the rate of the fuel being...
JPEG images are most commonly used in a wide variety of applications. JPEG compression properties can be used for forgery detection in digital images. While performing an intended forgery, the image has to be recompressed. Therefore identifying the traces of recompression can be good clue for detecting manipulation. In this paper, a method to detect forgery in JPEG image is presented and an algorithm...
This paper presents a multispectral palmprint recognition approach based on palm line orientation feature extracted with high order steerable filter. Gaussian function is used as isotropic window to design a high order steerable filter. The orientation features are selected as per dominant filter response for a particular orientation. Optimum values for parameters, i.e., standard deviation and number...
Higher order fading statistics for continuous process has been modeled and explored for various existing channels such as Rayleigh, Ricean and Nakagami-m, to a great extent. The inherent randomness in wireless channels is one of emerging and open research topic, and as this randomness is highly correlated therefore discrete model have been proposed earlier. In this paper, an alternative formulation...
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