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The aim of this paper is to present a GPU parallel algorithm for brain tumor detection to estimate its size and location from surface temperature distribution obtained by thermography. The normal brain tissue is modeled as a rectangular cube including spherical tumor. The temperature distribution is calculated using forward three dimensional Pennes bioheat transfer equation, it's solved using massively...
A solar photovoltaic system requires a regulation to extract the maximum of its energy taking account the atmospheric fluctuations and external disturbances [1]. In this article, we propose to study Maximum Power Point Tracking (MPPT) system, using an Automatic Selection Algorithm (ASA) to improve the efficiency of the PV system connected to a load via a DC-DC converter. The proposed ASA switch between...
The aim of this paper is to present a new approach for improving deformable models and especially the Level Set Method (LSM) for segmentation and extraction of brain tumors in MRI (Magnetic Resonance Imaging) with more accuracy, the contribution of this work is to exploit thermal behavior of brain tumors for correcting level set contours. Human Body temperature distribution is an indicator of health...
Generally manufacturer provides the transfer function of the wind energy conversion system. This paper aims to present a sensorless method to estimate the wind speed and determine the power coefficient of the wind energy conversion system. The method is based only on measurements of the current and voltage at the output of the permanent magnet synchronous generator. A spectrum analysis using the Fast...
This paper presents an approach to determine the power coefficient for a standalone wind energy conversion system (WECS) and estimate the wind speed. The knowledge of the power coefficient requires absolutely estimating the mechanical power supplied by the wind turbine of the system. An Extended Kalman Filter (EKF) associated to a PMSG model is used to reconstruct angular velocity and position. Generally...
In this paper, we present a study for modifying the topology of ENSET Mohammedia Morocco wind generator system. The electric energy storage is substituted by a boost chopper. Thus the electric power and DC output voltage became depending to the duty cycle of the boost chopper. The main proposed control is based on regulation of the inductance current of the boost converter. Finally the electric power...
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