Transport electrification based on embedded electrical network and smart synchronization device

Benmahdjoub, Mohammed Amine; Mezouar, Abdelkader; Boumediene, Larbi; Saidi, Youcef

doi:10.1007/s12652-020-02050-7

Cited by 4 publications

(1 citation statement)

References 28 publications

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“…In fact, heads of government have fought this pandemic by allowing the telecommuting and by making studies, conferences and meetings remotely [ 3 ]. On the other hand, the devices of ICT have been integrated into homes, transportation tools and in various fields to build a smart society and to improve the infrastructure building [ 4 , 5 ]. However, the efficiency of ICT devices, i.e., computers, GPS, the geostationary satellite is related to the accuracy of integrated sensors and the kind of oscillation clock used in them.…”

Section: Introductionmentioning

confidence: 99%

Analytical and numerical study of diffusion and localization of cold atoms in 3D optical speckles

2022

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This paper aims to study the diffusion and localization of cold atoms in three-dimensional (3D) optical speckles by using the theory of self-energy for N diffusers. In this paper, the Self-consistent Born approximation (SCBA) is used to study the diffusion and localization of cold atoms in an optical disordered speckles, while the spectral function is adopted to study the effect of the matter waves energy and the disorder amplitude on the behaviour of cold atoms. For this purpose, the models of SCBA and spectral function are computed by a numerical algorithm. The calculation of the latter quantity involves the application of Simpson’s integration methods. The diffusion and localization of a Bose–Einstein Condensate for First-order Born Approximation (FBA) and SCBA models are presented. In addition, the diffusion time and the mean free path between two diffusers are illustrated. Moreover, the effect of disorder amplitude and the scattering of matter waves in 3D disordered potentials are highlighted. In this study, the results show that the time response of cold atoms localization and metal–insulator transition in SCBA is faster and yields lower energy than the FBA approximation.

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Section: Introductionmentioning

confidence: 99%

Analytical and numerical study of diffusion and localization of cold atoms in 3D optical speckles

2022

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Dynamic voltage stability for embedded electrical networks in marine vessels using FACTS devices

Benmahdjoub

Mezouar

Bossche

et al. 2021

Int. J. Dynam. Control

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Sophisticated techniques are required for getting accuracy in high frequency power losses of magnetic. This paper presents a high frequency power loss measurement platform (full bridge) that provides accurate assessing of losses in magnetic components. This is obtained by a construction of a thermal shunt with radiator to measure the losses of the bridge. An aluminum strip is used as a "thermal resistor". Two NTC resistors measure the temperature drop across the aluminum strip. The magnetic device loss equals the DC input power of the platform minus the bridge loss. The copper loss can be estimated while using litz wire. Using litz wire windings with sufficiently low diameter of the strands allows neglecting eddy current losses, thus measuring only DC resistance is enough for calculating of copper losses. It can be checked by an RLC meter if the assumption is reasonable. The proposed approach and platform are verified by realization and experiments with a full bridge converter based on SiC switches and operating in frequency range of 50 kHz to 1 MHz. The proposed platform can be used for obtaining the frequency dependence of core losses of magnetic materials, as well as the dependence on duty ratio of the power converter.

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Nonlinear optimal control with effective wind speed estimation for maximum power extraction based on adaptive fuzzy logic controller and extended Kalman Filter

Benmahdjoub

Mezouar

Ibrahim

et al. 2023

Int. J. Dynam. Control

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The present paper aims to improve the effectiveness of an isolated water pumping system based on parallel wind turbine powertrains by using a nonlinear Integral Backstepping Controller (IBSC). In fact, the powertrain system with parallel Permanent Magnet Synchronous Generators (PMSG) is used to ensure the continuity of the power conversion system and to optimize the efficiency of generators. A three-phase PWM rectifier is implemented in the power system to convert the AC voltage obtained from parallel PMSG generators to a DC voltage. In fact, the regulated DC voltage will be supplied to a DC motor-driven water pump to control the tank level in the wind turbine pumping system. In this paper, the effective wind speed of a wind turbine is estimated by using an Extended Kalman Filter (EKF) instead of using anemometers. In addition, the Tip Tip Speed Ratio (TSR) method based on an Adaptive Fuzzy Logic Controller (AFLC) is performed to apply the Maximum Power Point Tracking (MPPT) algorithm for maximum power extraction from the available energy in the wind. Moreover, the Voltage Oriented Control (VOC) strategy is handled to control the currents of the three-phase rectifier. To evaluate the efficiency of the EKF estimator, the covariance and correlation coefficient between the estimated and measured wind speed are computed for each s 1 , while the AFLC and nonlinear IBSC controllers are evaluated by comparing their results with those obtained by the PI controller. For the wind speed estimation, the covariance and correlation coefficient results demonstrate that the EKF estimator has high accuracy with a 98% similarity between the estimated and measured wind speed. For the power extraction, the TSR based on adaptive FLC controller can extract slightly more wind energy than the PI controller. For tank level control, the nonlinear IBSC controller improves the efficiency of the wind turbine water pumping system by reducing the DC voltage surge and the overshoot of water level obtained by PI controller.

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Transport electrification based on embedded electrical network and smart synchronization device

Cited by 4 publications

References 28 publications

Analytical and numerical study of diffusion and localization of cold atoms in 3D optical speckles

Analytical and numerical study of diffusion and localization of cold atoms in 3D optical speckles

Dynamic voltage stability for embedded electrical networks in marine vessels using FACTS devices

Nonlinear optimal control with effective wind speed estimation for maximum power extraction based on adaptive fuzzy logic controller and extended Kalman Filter

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