Abstract The electric vehicle relies on electric motors for propulsion. In this report, the case was made for the induction motor as a suitable candidate for this tractive application. Being able to control the electric motor invariably implies efficient control of the vehicle. This work reports the six-step operation of the constant volts/hertz (V/f) control technique for voltage fed induction motor drives. Mathematical equations supporting the principle is discussed and the drive is m...
ABSTRACT The environment around radio navigation aids systems (navaids) includes buildings whose roofing materials interfere with signal propagation. This interference may cause partial loss of intelligence in communication between navaids and flying aircrafts. Buildings around airports have been restricted partly because they pose threats to flight navigation. This restriction as captured in the Laws of Kenya has not been supported by sufficient data. Previous studies have shown that about h...
ABSTRACT Surface studies done in Menengai field have indicated a huge geothermal potential and has led to the drilling of several wells. However, some of these wells have not produced as earlier projected and there are questions as to whether this field has enough permeability. The purpose of this study was to employ gravity method to understand density variations in the Menengai field by developing structural models and establishing whether there is enough permeability. Raw data received fr...
ABSTRACT Generator load is the key focus of a power plant which is significantly affected by its generating equipment which can be determined by both maintenance and the running parameters. The parameters of interest for this study were turbine inlet pressure, steam flow rate, steam chest pressure (Bowl pressure) and Generator Loading. The operation of Olkaria II power plant was started in the year 2002, with Unit I turbine taking steam at a flow rate of 62.5 Kg/Sec (225 ton/hr). After opera...
Radio Frequency based wireless remote control system can be used to control the output load from remote place. In this thesis a circuit of RF module ( Tx/Rx) for wireless remote control has been used for automatic collecting data from energy meter which called Automatic meter reading (AMR) instead of using traditional meter reading system for billing. In thesis AMR has been implemented to send and receive data between energy meter and electrical distribution company system. Simulation mo...
ABSTRACT The Hydrogen sulfide gas released from the geothermal operations has a potential impact on the health of the workers and the community living within the vicinity and also the geothermal equipment. Similarly, this gas is a toxic pollutant when released into the atmosphere. Additionally, this gas is corrosive to metal-based materials including brass and iron when dissolved in water. In this regard, there is need to manage the concentrations of hydrogen sulfide in the atmosphere at acc...
ABSTRACT In real situation the physical earth is in three Dimension (3D), a two dimension (2D) and one dimension (1D) earth models may not therefore explicitly explain or characterize the 3-D Earth in all situations. This is a simple and apparent reason why one needs a higher dimensional interpretation of Magnetotelluric (MT) resistivity data in modelling geothermal reservoirs. 2D MT interpretation is frequently applied in geothermal assessment and in many cases has effectively provided accu...
Recently, one of the major and serious worldly concerns is the limitation of energy resources. Sudan, in specific, confronts a critical crises relatingto fossil fuel resources, and mostly concerning the production of electricity energy from fired thermal power plants and hydropower. The primary energy supplies in the Sudan are 29% oil and gas, 71% hydropower. In this study, the potentials for renewable energy to generate electricity in the Sudan is analyzes. The results show that, they...
This thesis introduces full filled description for fifth-generation technology, here concentrated on massive MIMO technology in detailed at channel detection. However, channel illustrated carefully, described how to estimate and detect the channel. By using both algorithms least square and minimum mean square error for channel estimation while zero forcing and minimum mean square error for channel detection by analyzing and measure their performance using BER for MIMO 2x2, also it shows...
ABSTRACT Flexible AC Transmission Systems (FACTS) have been conceived to increase the transmissibility of electric power without the necessity of building new transmission iines. An important family of controllers proposed for FACTS are based on high power solidstate switches, such as the gate-tuni-off thyristor (GTO), which is presently rated at 6kV, 6kA. The FACTS controlier operates at the transmission voltage, in the order of 5ûûkV, and it rnust be mted at hundreds of MVA. The research...
ABSTRACT A Delta Modulated, Buck Type, Three Phase PWM Converter was constructed and tested. The converter is of the current source type and can be used in conjunction with current source inverters. The d.c. current is regulated by proportional feedback control loop. By delta modulation of the voltages across the a.c. terminaIs of the converter, the a.c. source currents are "indirectly" controlled so that the fundamental components remain in a predefined phase with respect to the source volt...
ABSTRACT Procedures are developed for designing high-speed, modular digital filters. The techniques presented here are based on the use of differences in the data signal in processing. The use of one-bit word, and the use of mapping of differentials in processing to produce a multiplication free, fast, and modular structured digital filters is considered in details in this thesis. A new algorithm for the digital filter is also proposed in the thesis which leads to the possibility of usi...
ABSTRACT This study has investigated the techniques for motion control of industrial robots with an application in which the robotics end-effector is required to track prescribed paths under conditions of changing payload masses, friction and elasticity in the gear boxes. In particular, the minimal configuration (the first three degrees-of-freedom) necessary for positioning the end-effector of a revolute industrial robot arm, MIMO, has been studied in terms of kinematics, dynamics and control...
ABSTRACT Extensive literature abounds on the evaluating techniques of load-point reliability indices of electrical power systems. On the whole, all the efforts of the published works have been the establishment of conventional methods to evaluate load-point reliability indices from raw component reliability data. Any system change that warrants new set of load-point reliability indices would require the whole process of reliability evaluation to be repeated. That is an inherent characteristic...
ABSTRACT Multiphase induction machine offers numerous advantages compared to the conventional three phase induction machine. It is an upgrade from the conventional three phase induction machine. By splitting the phase belt of a three phase, a sixphase machine is realised. The areas of application of multiphase machines are enormous, mostly where reliability is paramount. This research presents the modelling and implementation of a split phase induction machine with Saturation and skin effects...