Most variable speed wind turbines have pitch angle control mechanisms and one of their objectives is to extract maximum power from available wind speed. By adjusting pitch angles of wind turbine. In this research the use of pitch angle control for wind turbine equipped with self-exited induction generators (SEIGs) and power electronic converters is presented. To extract the maximum available power from the wind, the wind turbine is controlled using pitch angle control based on power sign...
A wireless sensor network is composed of a large number of sensor nodes and a sink. In the wireless sensor networks the main problem is limited battery life used by sensor nodes and the mobility of the sink nodes in the network. To avoid this problem, protocols with mobile sinks were proposed. They helped in achieving load balancing and uniform energy consumption throughout the network. This research aimed to concentrate on the dynamic requirements of the mobile sink by providing an ove...
ABSTRACT The use of fossil fuel in electricity generation has created three significant issues for the world to deal with. The issues are security (availability and reliability) of supply, climate change and the cost of fuel required for electricity generation. Covenant University, currently running a cluster of stand-alone diesel powered generating plants situated at different locations within the campus has a lot of unused available capacity within the system which invariably increases the...
ABSTRACT A power system is set up basically to meet the demands of the customers. However, interruptions which are largely unavoidable contribute to the unavailability of power and thus prevent power system from achieving this. In most cases, it is the sustained interruptions that greatly affect both the utility company and its customers. Hence, it is necessary to find means of determining which component failure contributes most to the unavailability of the distribution system, and how this...
Introduction This paper considers the influence the electrical engineer wills in any community and aims at the following: (1) Sensitization of electrical engineers towards self sustenance (11) The electrical engineer as a job creator. (iii) the electrical engineer as an employer. (iv) The role of electrical engineers in the creation of cottage industries and long term investments. The paper hinges its arguments on the commercialization of ideas as a basis for sustenance through lone term inv...
ABSTRACT Asynchronous Transfer Mode (ATM) technology is the transfer mode for implementing a Broadband-Integrated Services Digital Network (B-ISDN). ATM defines multiplexing and switching techniques for broadband signals. Synchronous Optical Network (SONET) is employed in the B-ISDN backbone. The main objective of an ATM is to guarantee Quality of Service (QoS) in transfer of cell streams across networks. This technology recommended as the transport vehicle for the B-ISDN offers a great fl...
ABSTRACT Load forecasting is an important component for power system energy management system. Precise load forecasting helps the electric utility to make unit commitment decisions, reduces spinning reserve capacity and schedule device maintenance plan properly. It also reduces the generation cost and increases reliability of power systems. In this work, a fuzzy logic approach for short term load forecasting is attempted. Time, temperature and similar previous day load are used as the indepe...
Abstract Most variable speed wind turbines have pitch angle control mechanisms and one of their objectives is to extract maximum power from available wind speed, by adjusting pitch angles of wind turbine. In this research, the use of pitch angle control using PI controller is presented for wind turbines equipped for a three turbines with self-exited induction generators (SEIGs). The converters are used to extract the maximum available power from the wind. All machines are connected to a dc b...
Abstract Modern power systems networks consist of a number of utilities interconnected together. Power is exchanged between utilities over tie-lines by which they are connected. Automatic generation control (AGC) plays a very important role in power system. Its main role is to maintain the system frequency and tie-line flow at their scheduled values during normal period and also when the system is subjected to small step load perturbations. The most commonly used controller is the PID contro...
Abstract In this thesis a method based on Particle Swarm Optimization (PSO) algorithm, which represents one type of modern optimization techniques is presented to determine the optimal parameters of Power System Stabilizers (PSSs) found in Sudanese National Grid, instead of classical control approaches. In addition TCSC is implemented in the National grid to increases the performance of the system by decreasing reactance of the transmission lines and hence increases the power flow in the lin...
ABSTRACT In this research the equalization concepts in Long Term Evolution (LTE) has been discussed in theoretical and practical manners as an analysis and implementation study of channel equalization in LTE downlink. As channel equalization is achieved on the receiver side after the OFDM modulation , we proposed a complete scenario for generation of OFDM frame from random bits which symbolized and QPSK modulated to generate the OFDM frame which consist of 10 sub frame, then the frame is pass...
Abstract Picking and placing an object or products in specific place or boxes play an important part in industry process, it consumed a lot of time also need patience and accuracy and cannot handle any mistakes. Pick and place robot is a robot that can be programmed to pick product or any object and place it somewhere. these robots are popular among many automation applications and material handling system, they are especially practical in applications where repetitive and difficult tasks ne...
Introduction Excellencies, distinguished guests, members of the Press, ladies and gentlemen, this is a unique day and unique occasion for me. In the first instance, it is a singular honour and privilege to be given this rare opportunity to address such a distinguished audience on the sore issue of poverty in Africa that has agitated my mind for several years now. But most importantly, today happens to be the birthday of our Chancellor, Dr. David Oyedepo, whose passion, vision and raison d'et...
ABSTRACT The purpose of Maintenance is to extend equipment life time or at least the mean time to the next failure. Asset Maintenance, which is part of asset management, incurs expenditure but could result in very costly consequences if not performed or performed too little. It may not even be economical to perform it too frequently. The decision therefore, to eliminate or minimize the risk of equipment failure must not be based on trial and error as it was done in the past. In this thesis, ...
ABSTRACT This study pursuit develop solar energy systems in the light of technological advances to develop these systems, especially those moving (solar Tracking) to take advantage of sunlight for a longer period. The Objective of Thesis is to find a design of the sun Tracker with two axes follow the movement of the sun throughout the sunrise to take advantage of the rays and solve the problem of environmental factors and the alternation of night and day to produce the greatest amount of sol...