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This paper presents the classification of power quality (PQ) disturbances using modular probabilistic neural network (MPNN), support vector machines (SVMs) and least square support vector machines (LS-SVMs) in grid-connected wind energy systems. Different types of sag and swell disturbances due to the change in load and wind speed are created using MATLAB/Simulink. Classification scheme encompasses...
A small-signal analysis of isolated autonomous hybrid system with high voltage direct current link (HVDC) or high voltage alternating current (HVAC) line for different energy storage combinations is proposed in this paper. The hybrid systems supplying power to isolated loads comprise of different renewable energy resources such as wind, photovoltaic (PV), fuel cell (FC) and diesel engine generator...
This paper represents the estimation of frequency which is an important power system parameter by several variant of recursive techniques. Estimation of frequency is not new as found in the literature such as Discrete Fourier Transformation, Least Mean Square Technique etc. In this paper we have implemented Recursive least square (RLS) and Extended Least square (ELS) for estimation of frequency. These...
A good crossbar switch scheduler should be able to sustain full bandwidth and maintain fairness among competing flows. A pure input-queued (IQ) non-buffered switch requires an impractically complex scheduler to achieve this goal. Common solutions are to use crossbar speedup and/or buffered crossbar. In this paper, we explore this issue in a buffered crossbar without speedup. We first discuss the conflict...
We consider fair allocation of sessions at the outputs of optical cross-connects employing wavelength division multiplexing (WDM). Each session consists of traffic on one or more wavelengths (channels). We identify lexicographic fairness as the most appropriate fairness criterion that is relevant to this setting. Achieving a fair lexicographic solution, commonly referred to as lexicographic optimality...
We consider utility max-min fairness of application traffic of a next generation Internet (NGI) service model contending for network bandwidth. The physical infrastructure that offers the bandwidth is a link-aggregated system where the links can be homogeneous or heterogeneous. Traffic can broadly be categorized into a few distinct classes and the containing flows in each class utilize the available...
Due to the need for increased border security, we present a novel system in the form of a digital camera that embeds biometric data into an image. The embedding process is performed using an invisible watermarking algorithm that allows for verification of the image as well as the identity of the carrier. This paper presents an area efficient and high performance VLSI architecture implementing the...
We propose a novel static slicing algorithm for inter-procedural programs. We use the system dependence graph (SDG) as the intermediate representation. We have implemented our algorithm by using file structures to handle all the statements that compute the static slice.
We address the quality of service (QoS) provisioning problem in an aggregated multi-server environment. The input packet stream traffic to the system is categorized at a macro level into a few "flow-classes" that require service differentiation; each class is further subdivided into "flows" at the micro-level. Flows can be serviced by any server: however; the service rate is a...
A high repetitive, compact and low-debris Xenon Z-pinch discharge system has been designed and fabricated as an EUV light source, in which a newly developed gas jet-type Z-pinch source is used. The discharge head has a coaxial double nozzle and a diffuser. Xenon Z-pinch plasma that emits EUV light is produced between the inner nozzle and the corresponding diffuser. An annular shell of a He gas curtain...
Fault classification is an essential task for transmission line protection. Different forms of neural network are proposed for fault classification and all are of monolithic in structure. In this work modular concept is introduced to the neural network solution of the fault classification problem. The fault classification task is divided into number of subtasks where each subtask is accomplished by...
A new gas jet type Z-pinch source of 13.5 nm radiation, which has the characteristics of a gas jet electrodes configuration and the scheme for radial extraction of extreme ultraviolet (EUV) light, has been developed. The gas jet type Z-pinch discharge has two nozzles and two diffusers. The EUV beam is collected from the side of pinch plasma, generated in between the inner nozzle and corresponding...
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