Ibrahim M. Safwat

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Electric power quality has become an important part of power systems and electric machinery, so the research on harmonic reduction and enhancement of Power Factor (PF) has become intensified. In this paper, a comparison between passive Power Factor Corrector (PFC) traditionally used in the power systems and an active PFC type based on buck boost conversion(More)
In this paper we consider symbol detection in Alamouti's space-time block coding (STBC) scheme by using Adaptive Sphere Decoder (ASD) which carries out adaptive radius search over time-selective fading channels. Once the channel is time-varying in nature, the channel co-efficients vary from one signaling interval to another, a conventional Maximum(More)
This paper presents a 1kW power system model which consists of a boost converter fed by a stand-alone proton exchange membrane (PEM) fuel cell stack. A generic model of H- 1000 fuel cell stack is built with max voltage error ±1V as well as a dynamic model of the boost converter. The output voltage level of this power system is controlled by an(More)
State-of-charge (SOC) estimations of Li-ion batteries have been the focus of many research studies in previous years. Many articles discussed the dynamic model’s parameters estimation of the Li-ion battery, where the fixed forgetting factor recursive least square estimation methodology is employed. However, the change rate of each parameter to reach the(More)
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