Power Electronic Group PEG

Tunisia

Power Electronic Group PEG

Tunisia
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Mejbri H.,Power Electronic Group PEG | Ammous K.,Power Electronic Group PEG | Morel H.,French National Center for Scientific Research | Ammous A.,University of Sfax
International Review on Modelling and Simulations | Year: 2012

In the development of power converters interfacing photovoltaic panels with the grid, the increasing efficiency and the decreasing of coasts and volume are the important criteria. To achieve these requirements, sophisticated computer -aided design optimization is required. Optimization techniques using genetic algorithms (GA) have received attention in power electronics optimization, since GA have the ability of handling discrete design variable. This paper provides a discrete optimization approach for the sizing of power converters. An important Pareto -based multi-objective optimization algorithm namely Non-dominated sorting Genetic Algorithm (NSGA-II) is used to obtain the design. As an example, a boost converter used for photovoltaic applications under some electrical constraints is sized for minimum costs, volume and losses. © 2012 Praise Worthy Prize S.r.l. - All rights reserved.


Mejbri H.,Power Electronic Group PEG | Ammous K.,Power Electronic Group PEG | Morel H.,French National Center for Scientific Research | Ammous A.,University of Sfax
International Review on Modelling and Simulations | Year: 2012

In the development of power electronics systems, the increasing eff or the decreasing costs and volume have been of primary concern. This paper provides a continuous optimization approach for design of power converters. An important Pareto-based multi-objective optimization algorithm namely Non-dominated Sorting Genetic Algorithm (NSGA-II) is used to obtain the design. As an example, a boost converter under some electrical constraints is synthesized for minimum costs, volume and losses. © 2012 Praise Worthy Prize S.r.l. - All rights reserved.


Ammous K.,Power Electronic Group PEG | Morel H.,University Claude Bernard Lyon 1 | Ammous A.,Power Electronic Group PEG
IEEE Transactions on Instrumentation and Measurement | Year: 2011

Power switching loss estimation for fast power semiconductor devices requires probe inverse models. Simple corrections of the delay introduced by the probe cables improve the measured waveform, but they are not sufficient. Prior to the construction of the probe inverse models, the authors introduce direct models. Particularly, the classical RLC equivalent circuit reveals a poor model. The traveling wave, i.e., Bergeron's approaches, is introduced, which leads to convenient probe inverse models. The validation is obtained between experimental results and simulation. © 2011 IEEE.


Lajnef T.,Power Electronic Group PEG | Abid S.,Power Electronic Group PEG | Ammous A.,Power Electronic Group PEG
Advances in Power Electronics | Year: 2013

Different energy sources and converters need to be integrated with each other for extended usage of alternative energy, in order to meet sustained load demands during various weather conditions. The objective of this paper is to associate photovoltaic generators, fuel cells, and electrolysers. Here, to sustain the power demand and solve the energy storage problem, electrical energy can be stored in the form of hydrogen. By using an electrolyser, hydrogen can be generated and stored for future use. The hydrogen produced by the electrolyser using PV power is used in the FC system and acts as an energy buffer. Thus, the effects of reduction and even the absence of the available power from the PV system can be easily tackled. Modeling and simulations are performed using MATLAB/Simulink and SimPowerSystems packages and results are presented to verify the effectiveness of the proposed system. © 2013 Tourkia Lajnef et al.

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