Voltage Source Converter (VSC) based HVDC transmission systems are available in market for power rated between a few MVA to a few hundreds of MVA. The new system results in many application opportunities and new applications in turn bring up new issues of concern. This paper aims at exploring the HVDC transmission systems and also presents a comprehensive investigation on one of the concerned issues, which is the contribution of HVDC Light? to short circuit currents. Different AC network conditions, load conditions and fault types are considere ....etc

[:=Read Full Message Here=:]

Short-Circuit Protection inDC Low-Voltage Systems
Many a times you need topower an adjoining accessorycircuit from the powersupply used in the main module cir- Pratik Panchal cuit. Here is a circuit to derive the additionalpower supply from the main circuit.The main circuit is protected fromany damage due to short-circuit in theadditional power supplycircuit by cutting off thederived supply voltage.The derived supply voltagerestores automaticallywhen shorting is removed.An LED is used to indicatewhether short-circuit existsor not. A ....etc

[:=Read Full Message Here=:]

Prepared by:
Saifur Rahman
Rahul Bhatnagar


Abstract

This paper reviews some of the existing studies on one-to-twenty four hour load forecasting algorithms, and presents an expert system based algorithm as an alternative. The logical and syntactical relationships between weather and load, and the prevailing daily load shapes have been examined to develop the rules for this approach. Two separate, but similar, algorithms have been developed to provide one-to-six hour and 24 hour ahead forecasts. These forecasts have bee ....etc

[:=Read Full Message Here=:]

Definition
Short message service (SMS) is a globally accepted wireless service that enables the transmission of alphanumeric messages between mobile subscribers and external systems such as electronic mail, paging, and voice mail systems. The benefits of SMS to subscribers center around convenience, flexibility, and seamless integration of messaging services and data access. From this perspective, the benefit is to be able to use the handset as an extension of the computer. SMS also eliminates the need for separate devices for messaging, as se ....etc

[:=Read Full Message Here=:]

ABSTRACT:
This project presents the approach to the short term load forecasting using Artificial Neural Network (ANN) and Fuzzy Logic. Artificial Neural Networks (AAN) have recently been receiving considerable attention and a large number of publications concerning ANN-based short-term load forecasting (STLF) have appeared in the literature. Along with this Fuzzy Logic , also a part of Artificial Intelligence, is known to result in accurate predictions. In this paper, a model using Fuzzy Logic with the help of an ANN ....etc

[:=Read Full Message Here=:]

Efficient Node Admission and Certificateless Secure Communication in Short-Lived MANETs

Decentralized node admission is an essential and fundamental security service in mobile ad hoc networks (MANETs).It is needed to securely cope with dynamic membership and topology as well as to bootstrap other important security primitives (such as key management) and services (such as secure routing) without the assistance of any centralized trusted authority.An ideal admission technique must involve minimal interaction among MANET nodes, since connectiv ....etc

[:=Read Full Message Here=:]

The main goal of this project is to design and develop a short range intelligent digital radio wireless hub. And this hub must be able communicate between adjacent buildings on the campus using digital transmitter and receiver modules(Easy-Radio style). It also must have some interfacing capability like four LEDs for output and four digital inputs, a local USB interface and also mesh interconnection capability. For example,messages could be passed from hub to hub to provide bi-directional communication between them.
Key areas of this project ....etc

[:=Read Full Message Here=:]

Tomographic imaging of electrically large objects in 2-D and 3-D environments using ultra-wideband (UWB) sensor arrays is described. Object cross-section electric properties is the most difficult part to model.Different industrial, medical, and security applications use microwave signals to penetrate and sense light opaque materials with reasonable spatial resolution.Increased level of spatial resolution and materialelectrical parameter measurement accuracy of Wideband signals, such as those produced with ultra-wideband (UWB) systems makes it ....etc

[:=Read Full Message Here=:]

abstract
This system uses RF transmission technology. The RF transceiver module which I use has a range up to 100 metres in ideal conditions. This module can transmit and receive 4-bit parallel data with or without 8 address bits using a specific encoder and decoder ICâ„¢s. Another module can be designed such that it can transmit and receive 8-bit parallel data with or without 10 address bits using a specific encoder and decoder ICâ„¢s. The advantage of having the address bits is that message transfer can be made secure.
8-bit ....etc

[:=Read Full Message Here=:]

Short Range Personal Radar
INTRODUCTION:
The idea to create a type of close proximity radar system came from a student in one of my classes. We went ahead and decided to streamline the idea into the course as one of the projects we'd build. After a week or two of prep time we finally agreed on the project setup & parts that we'd use. This is not meant to be an advanced project, thusly the difficulty is set at medium. Below is an example of what short range personal radar could be used for. It's meant to be a bit comical ....etc

[:=Read Full Message Here=:]