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Browsing Theses and Dissertations by Issue Date

Browsing Theses and Dissertations by Issue Date

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  • Abdel Karim, Nabil (Notre Dame University-Louaize, 2018-06)
    In wind turbine generating systems, Axial Flux Permanent Magnet Synchronous Generators (AFPMSG) are becoming increasingly popular due to many advantages they offer. Nevertheless, these machines suffer from the so-called cogging torque resulting from the interaction between the permanent magnets and the slotted armature. Not only it causes noise and vibration, this cogging torque affects the selfstart ability of wind turbines at low wind speed. Therefore, the aerodynamic torque •generated by the rotor blades should overcome the cogging torque anytime during the operation otherwise the wind ...
  • Nasrany, Christelle (Notre Dame University-Louaize, 2019-03)
    The purpose of this thesis is to design and test a device that measures the electrical parameter sofa certain material. This device can have different applications, like assisting in land mines detection, agricultural or construction purposes. In order to measure the electrical parameters, this device or probe uses two wideband planar dipole antennas that operate in the frequency range between 3 and 6 GHz. The transmitted signal between the antennas, (S21), is measured and then compared to a database obtained by simulating different materials using the Finite Difference Time Domain Method. Based ...
  • Khoury, Danny (Notre Dame University-Louaize, 2019-05)
    Smart grid engineering is the key for an optimized use of extensive energy resources which allows the hybrid renewable energy sources microgrid to be integrated and therefore dispatch their power generation to the grid over long distance DC transmission lines using the HDVC transmission technologies. However, the required number of generating units of wind-turbine generators and photovoltaic arrays, and the associated storage capacity for standalone and/or grid connected hybrid microgrid is determined using a sizing algorithm based on the observation that the state of charge of battery should ...
  • Salameh, Peter R. (Notre Dame University-Louaize, 2022)
    This thesis aimed to study the structure of an on grid photovoltaic system and to get by the aspect of integration of such system to the power network. The integration method can have different topologies and is usually based on power electronic devices controlled by dedicated controllers. In order to transform the direct output signal of the PV panels to an alternative signal connected to the utility network, the Modular Multilevel Converter (MMC) was used in this study. The challenges linked to this type of converters are associated with its sub-modules balancing control, the ...

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