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A review study of photovoltaic array maximum power tracking algorithms

El-Khozondar, Hala J.; El-Khozondar, Rifa J.; Matter, Khaled; Suntio, Teuvo (Springer Singapore, 2016)

There are numerous maximum power point tracking (MPPT) algorithms for improving the energy efficiency of solar photovoltaic (PV) systems. The main differences between these algorithms are digital or analog implementation, ...

Matlab/Simulink Modeling to study the effect of partially shaded condition on Photovoltaic array's Maximum Power Point

Matter, Khaled; El-Khozondar, Hala J.; El-Khozondar, Rifa J.; Suntio, Teuvo (2015)

Solar energy is an important source of renewable energy due to the easy access to the source. One drawback in this system is achieving the maximum efficiency of the system. The photovoltaic (PV) cell is the fundamental ...

Simulation and Implementation of Incremental Conductance Maximum Power Point Tracking Algorithm for Photovoltaic System

El-Khozondar, Hala J.; El-Khozondar, Rifa J.; Matter, Khalid H (American Scientific Publishers, 2015)

In this work, we simulate a photovoltaic (PV) array to obtain maximum power point (MPP) of the system. We used an incremental conductance (IC) algorithm to track MPP. We gave a detailed explanation of IC tracking system ...

Metamaterial-dielectric photonics crystal waveguide structure

El-Khozondar, Hala J.; El-Khozondar, Rifa J.; Shabat, Mohammed M. (2015)

Photonic crystals (PCs) are a revolutionary science that has a great impact on the field of photonics. In purpose of extend the applications of PCs, we introduce a new photonic structure which is composed of alternating ...

VCO based on Composite Right/Left-Handed Metamaterial Transmission Lines loaded with RTD

El-Khozondar, Hala J.; Abu-Marasa, Mahmoud; El-Khozondar, Rifa J.; Elbahri, Mady; Said, Zouhdi (2015)

This paper proposes a voltage control oscillator (VCO) at high frequency consists of nonlinear composite right/left-handed transmission line (CRLH-TL) loaded with Resonant Tunneling Diode (RTD). The system has equals input ...

Parameters influence on MPP value of the photo voltaic cell

El-Khozondar, Hala J.; El-Khozondar, Rifa J.; Matter, Khaled (Elsevier, 2015)

Solar energy is an important alternate to traditional energy sources to generate electrical power. Electrical power is extracted from solar energy via photovoltaic (PV) cell. However, PV cell maximum output power (MPP) ...

Tunable MTMs consists of a single-walled nanotube thin film waveguide covered by nonlinear cladding

El-Khozondar, Hala J.; El-Khozondar, Rifa J.; Zouhdi, Said (Springer Berlin Heidelberg, 2015)

A theoretical approach to study fabrication of tunable metamaterials (MTMs) consists of a single-walled nanotube film sandwiched between nonlinear cladding and linear substrate. In the proposed waveguide, the dispersion ...

Monte Carlo Potts Simulation of Grain Growth of Solid Grains Dispersed in a Liquid Matrix

El-Khozondar, Hala J.; El-Khozondar, Rifa J. (الجامعة الإسلامية - غزة, 2015)

Liquid phase sintering is a process in which solid grains coexist with a liquid matrix. This process has important applications in processing of several engineering materials. Examples of these applications are high-speed ...

Propagation of surface waves at the interface between nonlinear MTMs and anisotropic materials

El-Khozondar, Hala J.; El-Khozondar, Rifa J.; Zouhdi, Said (Springer Berlin Heidelberg, 2014)

Metamaterials (MTMs), which have both negative permeability and negative permittivity, have potential applications in optoelectronics and communications. These materials are fabricated in laboratories which is an added ...

Pspice Simulation of NL-Transmission Line A/D Conversion

El-Khozondar, Hala J.; El-Khozondar, Rifa J.; Essimbid, BZ (2014)

Nonlinear transmission lines (NLTL) that consist of coplanar waveguide periodically loaded with resonant tunnel diode are capable of shaping signal waveforms during transmission. Such system is the basis of very interesting ...