Ahmad SalahAl-Hussein Bin Talal University | AHU · Department of Electrical Engineering
Ahmad Salah
Doctor of Engineering
About
18
Publications
7,422
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99
Citations
Introduction
Additional affiliations
August 2014 - present
October 2012 - August 2014
August 2009 - March 2010
Education
August 2014 - October 2018
October 2010 - September 2012
September 2003 - August 2008
Publications
Publications (18)
The doubly fed induction generator is commonly used in commercial wind turbines because of its simplicity and robustness; it is a wound rotor induction machine. It has a relatively small airgap which makes it more vulnerable to unbalanced magnetic pull. This paper presents a simulation model to investigate the ability of extra stator windings with...
Sea wave energy generators or converters (WECs) have the potential to become a viable technology for clean, renewable energy production. Among the WEC technologies, the oscillating water columns (OWCs) are the most common WEC devices studied. These have been studied and developed over many years. Multi-chamber oscillating water columns (MC-OWC) hav...
Condition monitoring enables diagnosis of the inception of fault mechanisms in electrical machines, thus averting failure and the need of expensive repairs. Therefore, it is valuable to develop efficient methods of condition monitoring. The idea would be relatively low cost and/or non-invasive system, which is still sufficiently powerful in terms o...
Condition monitoring can diagnose the inception of fault mechanisms in induction motors, thus avoiding failure and expensive repairs. Therefore, there is a strong need to develop an efficient condition monitoring approach. The main aim is to achieve a relatively low cost and non-invasive system which is still powerful in terms of monitoring for onl...
Condition monitoring can diagnose the inception of fault mechanisms in induction motors, thus avoiding failure and expensive repairs. Therefore, there is a strong need to develop an efficient condition monitoring approach. The main aim is to achieve a relatively low cost and non-invasive system which is still powerful in terms of monitoring for onl...
Abstract—Design optimization of induction machines uses computer aided design. These machines are the most suitable choice for various and complex industrial applications and improved efficiency is a key point. Wound rotor induction machines have enjoyed a renascence as the generator in many commercial wind turbines. In this paper, both Motor-CAD a...
This paper puts forward a concept for measuring rotor eccentricity in a wound rotor induction machine. The analysis is fully developed in the theory section then an experimental rig is described and measurements are taken. These are compared to the calculated values. Pole-specific search windings are necessary in a wound rotor machine because stand...
A steady state analysis is developed for a wound rotor induction machine. In this paper the authors derive simple expressions for the mutual and coupling impedance in order to build impedance matrix. The analysis can be used in two ways when dealing with a symmetrical and asymmetrical rotor. The analysis is verified using a wound-rotor motor; the a...
This paper puts forward a concept for measuring rotor eccentricity in an wound rotor induction machines. The analysis is fully developed in the theory section then an experimental rig is described and measurements taken. These are compared to the calculated values. Using pole-specific search windings are necessary in a wound rotor machine because s...
This paper addresses the need to detect the rotor radial position in an electrical machine. When it is not centered it is referred to as rotor eccentricity. Cage induction machines can use the detection of sideband currents and this is studied extensively elsewhere. Wound rotor induction machines do not generate the same sidebands so an alternative...
Condition monitoring is a standard method for scheduling maintenance and ensuring that catastrophic failures do not occur. It is used in many applications where there is high capital cost or the location is remote. Condition monitoring is increasingly used in renewable energy as stated in [1]-[4] and these mostly address the rotating equipment and...
Projects
Projects (4)
This project aims to investigate high-performance energy and water design measures and strategies in existing buildings of southern Jordanian already-built buildings in the hot-dry context of Ma'an-city to transform existing residential buildings into Water-Energy efficient ones. This project encourages better design and construction practices that promote passive and active design strategies and water efficiency.
This project aims to investigate high-performance energy and water design measures and strategies in existing buildings of southern Jordanian already-built buildings in the hot-dry context of Maan-city to transform existing residential buildings into Water-Energy efficient ones. This project encourages better design and construction practices that promote passive and active energy and water efficiency.
Condition monitoring enables diagnosis of the inception of fault mechanisms in induction
machines, thus averting failure and the need of expensive repairs. Therefore, it is valuable to develop efficient methods of condition monitoring. The idea would be relatively low cost and/or non-invasive system, which is still sufficiently powerful in terms of monitoring by online detection of developing faults. This research develops a relatively simple yet powerful model for studying the behaviour of a wound rotor induction machine (WRIM) or doubly fed induction generator (DFIG) in healthy and faulty conditions based on the impedance matrix.
