Browsing Faculty of Engineering by Issue Date
Now showing items 1-20 of 1129
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Status of international interconnections and electricity deregulation in Africa: an overview of the current status in Southern Africa
(IEEE, 2004)The Southern African power system is in a state of flux. The grid is expanding and more interconnections are being made. However, vastness of the area and the low power consumption density in most African countries makes ... -
Linear model of a closed three-shaft Brayton cycle
(IEEE, 2004)A linear model of a closed three-shaft Brayton cycle is developed. The model is intended to give an understanding of the dominant dynamic behavior in a nuclear power system that utilizes a closed three-shaft Brayton cycle. ... -
Data acquisition system for capturing dynamic transients in a control valve
(IEEE, 2004)This work presents the development of a data acquisition (DAQ) system to be used in conjunction with fuzzy modelling to derive a dynamic mathematical model of a control valve. Characterising the behaviour of a control valve ... -
Action evolution for intelligent agents
(IEEE, 2005)This paper introduces an alternative method of reinforcement learning for intelligent agents. The aim with this method is to closer emulate the natural thought processes of problem solving. This paper only provides a ... -
The development process of an axial active magnetic bearing
(2005)The purpose of this paper is to motivate and inspire students to investigate and understand fundamental principles of electrical engineering such as magnetic levitation, control theory and sensor design. This paper describes ... -
Linear model of a closed three-shaft Brayton cycle
(SAIEEE, 2006)A linear model of a closed three-shaft Brayton cycle at normal power operation is developed. The model is intended to give an understanding of the dominant dynamic behaviour in a nuclear power system ... -
Validation of a transient thermal-fluid systems CFD model for a packed bed high temperature gas-cooled nuclear reactor
(Elsevier, 2006)This paper provides an overview of the theoretical basis for a new thermal-fluid systems CFD simulation model for high temperature gas-cooled reactors, contained in the Flownex software code. Flownex provides for detailed ... -
A systems CFD model of a packed bed high temperature gas-cooled nuclear reactor
(Elsevier, 2006)The theoretical basis and conceptual formulation of a comprehensive reactor model to simulate the thermal-fluid phenomena of the PBMR reactor core and core structures is given. Through a rigorous analysis the fundamental ... -
The global galerkin finite element method as applied to the 1d beam equation: a systems approach
(SAAM, 2006)The paper focuses on the finite element solution of the fourth-order differential for an EulerBernoulli beam. In this approach the point point loads and concentrated moments are treated in a natural way as part of the ... -
A comparative study on fault detection and correction techniques on active magnetic bearing systems
(IEEE-Institute of Electrical and Electronics Engineers, 2007)In this paper, the authors distinguish between three real-time fault detection, correction and identification schemes for vibration forces on the rotor of a rotational active magnetic bearing (AMB) system. Historical fault ... -
Data mining: a technique used to extract information from tan delta measurements on medium voltage induction motors
(IEEE, 2007)The study attempted to understand the condition of the insulation system and to classify the data according to its condition. Data mining processes were used to gain insight into the data and the condition of the insulation ... -
A qualitative assessment of the insulation systems of medium voltage induction motors
(IEEE, 2007)The research was an attempt to understand the condition of the insulation system and to classify the data according to its condition. Data mining processes was used to create a model to gain insight into the data and the ... -
The development of a flexible rotor active magnetic bearing system
(SAIEEE, 2007)A design process comprising aspects of modelling and analysis is developed, implemented and verified for a flexible rotor active magnetic bearing system. The system is specified to experience the first three critical ... -
A current analysis and correction system for vibration forces on the rotor of a rotating active magnetic bearing system
(SAIEE, 2007)In this paper, an on-line detection, correction and identification system for vibration forces on the rotor of a rotating active magnetic bearing is proposed. The on-line detection system performs current analysis by ... -
The effect of thermal drying on the mechanical strength of South African coal
(SAIMM (The South African Institute of Mining and Metallurgy), 2008) -
Analysis of waveforms in modern power systems
(Wiley, 2008)This chapter contains sections titled: Frequency Analysis of Non-Sinusoidal Waveforms: Practical Considerations; Analog-to-Digital Conversion; Sequence Component Analysis; IEEE 1459: Power Definitions for modern Power ... -
Improving QoS for real-time multimedia traffic in ad-hoc networks with delay aware multi-path routing
(IEEE, 2008)A Mobile Ad-hoc Network (MANET) is a wireless network in which nodes, in the absence of fixed access points, communicate via single or multi-hop paths. Each node in a MANET should thus be able to perform necessary routing ... -
Regenerator for Varshamov-tenengolts-like synchronisation error correcting codes
(IEEE, 2008)Synchronisation errors, that is, the insertion of additional or deletion of valid symbols, are the most difficult class of errors to correct - containing the class of additive errors as a subset. A regenerating algorithm, ... -
Efficient packet erasure decoding by transforming the systematic generator matrix of an RS code
(IEEE, 2008)We consider the erasures-only decoding of Reed-Solomon codes. One class of erasure decoders of algebraic codes can be viewed as a transformation of the systematic generator matrix, as first noticed by Berlekamp. We extend ...
