Mohamed Awaad

Benha University · Department of Electrical Engineering (Benha)

In this article the development of air core current limiting reactor provided with controller is proposed to be used in AC fault current limitation of low and medium voltages. It contains an air core transformer, which its primary winding is connected in series with the mainstream of the electrical radial network AC system whereas the reactor secon...

In a gas-insulated system, when the stressed conductors are encased by a solid dielectric, the corona onset voltage (COV) over its surface increases, minimizing the corona discharge. The paper's objective is to calculate the positive COV over the surface of a solid dielectric cylinder that encased rod-rod gap with a common axis and by shifting the...

Small-scale horizontal axis wind turbines (SSHAWT) have recently gained more interest due to fuel shortages and environmental issues. Generally, they are installed close to the ground in the wind boundary layer, where the velocity is relatively small. This study aims to evaluate the performance of a commercial SSHAWT and to modify rotor design base...

This article combines a mechanical DCCB and commutation circuit charged by resistive superconducting element to study the HVDCGCB arc interruption process during fault occurring and to investigate the transient behavior of the HVDCGCB during switching phenomena using the tools of black box arc model and EMTP-ATP simulation software. at the instant...

The development of renewable sources of electrical energy represents the main goal of the most countries. This energy has to be transmitted for a long distance for the utilization in populated areas. The need of high-voltage direct current circuit breakers represents the key of the development of high-voltage direct current transmission systems. Hi...

The development of the renewable energy and the need of medium- and high-voltage direct current circuit breakers are the keys in the development of medium- and high-voltage transmission systems. It can be used in high-voltage systems as cascaded interrupters. In this paper, the cascaded interrupters of gaseous circuit breakers are simulated using b...

The development of renewable sources of electrical energy represents the main goal of the most countries. This energy has to be transmitted for a long distance for the utilization in populated areas. The need of high-voltage direct current circuit breakers represents the key of the development of high-voltage direct current transmission systems. Hi...

This paper presents the design, simulation and implementation of a dc microgrid based on quadrupler boost converter. The system performance is controlled using either a voltage droop or an adaptive droop technique in order to regulate the grid voltage and achieve proper load sharing among different sources. The quadrupler dc converter is selected a...

In this paper, the model of the grid side system GSS is studied in two consequent steps. First, the steady state model of the GSS is developed by using phasor theory; studying the relationships between active and reactive powers, voltage, and currents at different operating modes. Second, control of the grid side converter GSC is studied; developin...

Nowadays, it is highly important to predict the wind speed/direction (at any wind farm). In order to determine the demanded wind power that could be captured by the available wind turbines at the farm. Effective wind prediction has always been challenged by the nonlinear and non-stationary characteristics of the wind stream. This paper presents two...

Wind energy plays an important role as a contributing source of energy, as well as, and in future. It has become very important to predict the speed and direction in wind farms. Effective wind prediction has always been challenged by the nonlinear and non-stationary characteristics of the wind stream. This paper presents three new models for wind s...

In order to increase the efficiency of PV system, it is generally used three methods, the first is the increasing of the solar cell efficiency, the second is the energy conversion system included MPPT control algorithm and the third is the using solar tracking system. In solar tracking system, it is used DC motors, special motors like step motors,...

In order to increase the efficiency of PV system, it is generally used three methods, the first is the increasing of the solar cell efficiency, the second is the energy conversion system included MPPT control algorithm and the third is the using solar tracking system. In solar tracking system, it is used DC motors, special motors like step motors,...