Fuel Cell Impedance Model Parameters Optimization using a Genetic Algorithm

The objective of this paper is the PEM fuel cell impedance model parameters identification. This work is a part of a larger work which is the diagnosis of the fuel cell which deals with the optimization and the parameters identification of the impedance complex model of the Nexa Ballard 1200 W PEM fuel cell. The method used for the identification is a sample genetic algorithm and the proposed impedance model is based on electric parameters, which will be found from a sweeping of well determined frequency bands. In fact, the frequency spectrum is divided into bands according to the behavior of the fuel cell. So, this work is considered a first in the field of impedance spectroscopy So, this work is considered a first in the field of impedance spectroscopy. Indeed, the identification using genetic algorithm requires experimental measures of the fuel cell impedance to optimize and identify the impedance model parameters values. This method is characterized by a good precision compared to the numeric methods. The obtained results prove the effectiveness of this approach

Modeling in Matlab / Simulink of Clean Hydrogen Production using PV Panel for sustainable use

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Modeling in Matlab / Simulink of Clean Hydrogen Production using PV Panel for sustainable use

International audienceHydrogen presents a clean energy source for the environment; its production must be advantageous by using clean energy converters. In this paper, we present the Matlab/Similink modeling of a clean hydrogen production system which consists of water electrolyzes coupled with a PV panel system. Hydrogen is produced by the chemical process of water electrolysis. The necessary current is supplied by a photovoltaic system. Simulation of Matlab/Simulink is to provide an electrical model of the water electrolysis and the PV panel system. The obtained results are the current-voltage characteristics I-V of the hydrogen production system. This hydrogen will then be stored in a tank to be used by a PEM fuel cell to power an electric load at any time. This system is advantageous so that it allows us to have stable electrical energy during the period of darkness or poor irradiance

Study and Validation of a PEM Fuel Cell Complex Impedance Measurement System

International audienceObjectives: The objective of this work is the study and validation of the complex impedance measurement system for the PEM fuel cell using STM32F4 microcontroller. We present the technical method for measuring the PEM fuel cell complex impedance using this system. Methods: Among the problems of fuel cells development is still the reliability of their performances over time. The solution of this problem is the implementation of an efficient diagnostic method such as the complex impedance measurement of the cells in order to diagnose it in real time using the Electrochemical Impedance Spectroscopy method (EIS) which is used to diagnose complex electrochemical systems. Findings: To run the complex impedance measurement, it is necessary to use specific software and hardware tools for fuel cells. In this context, we presented the steps of implementation of the system for the measurement of the PEM fuel cell complex impedance. This test bench is realized around the Nexa Ballard PEM fuel cell, an electronic load and a measuring board based on the microcontroller STM32F4 connected to a computer collecting data processed by measurement application developed using LabVIEW® software. The obtained results validate the design of this measuring system. The contribution through the results in this work will be to obtain onboard diagnostic for a PEM fuel cell in the automotive transport field. Application: This system is so small that it can be implemented in an embedded system; it is less expensive than the industrial system for measuring the PEM fuel cell complex impedance

Parameters identification of the complex impedance model of the PEM fuel cell using Matlab/Simulink

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Design and Development of a Labview Application for the Measurement of the Complex Impedance of a Fuel Cell in Real Time

International audienceTo optimize the performance of fuel cells and to deepen the knowledge of their behavior, it is necessary to make measurements in real time. To run such a measure, it is necessary to use specific software and hardware tools to instrumentation fuel cells. In this context, we presented the steps of designing and developing an application for the measurement of the complex impedance by electrochemical impedance spectroscopy method (EIS) using LabVIEW® software. The experimental results are obtained using a Ballard Nexa® PEM fuel cell, an electronic load produced in our laboratory and application developed by the LabVIEW® software

Study and design of a controlled oscillator for an embedded system to measure the complex impedance of PEM fuel cell »

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