Dynamic Analysis of a Stand Alone Operation of PEM Fuel Cell System

Abstract

In this paper, the dynamic mathematical model of a proton exchange membrane (PEM) fuel cell is presented. Dynamic performance of a PEM fuel cell system by experimental and simulation using matlab/simulink is investigated. The V-I load characteristics of a 1.2 kW PEM fuel cell are presented. Result shows that the starting current of the PEM fuel cell operated at rated load reaches to approximately twice of its rated current in just less than 0.015 second before it reached to its steady state condition. Step change load responses of this PEM fuel cell were experimented and simulated. It was found out, from the results obtained, that PEM fuel cell had a very fast response to load changes. Moreover, results show that the experimental and the result computed by using the simulation of the model are very close to each other which validates the model. Hence, this model could be used to implement a controller design in order to come up with an optimal and efficient operation of PEM fuel cell. Based also on the results, a suitable power conditioning can be constructed and designed for safe and reliable operation of PEM fuel cell especially in integrating and connecting it to a hybrid wind/PV distributed generation system.

Identification of PEM Fuel cell system model for traction chain based on profile mission measurement

“…ܴ ௧ǡ and ܴ ǡ are activation and concentration losses of each single cell of PEMFC, respectively. They can be expressed as (7) and (8).…”

“…Several approaches are done to propose the static and dynamic model of PEMFC stacks [3]- [7] and [8] which provide the polarization curve (voltage as a function of current). In last few years, the numerical modeling, computer simulation and PEMFC stacks performance have been proposed [2], [9]- [11].…”

Nitrogen doping in the carbon matrix for Li-ion hybrid supercapacitors: state of the art, challenges and future prospective

“…Hence, optimization of the operating voltage is a crucial factor to enhance the electrochemical performance of the hybrid system. [54][55][56][57] The electrolytes used in Li-ion capacitors consist of lithium salts in organic solvents allowing for a large operating voltage. 58 It has been reported that a high cyclic stability is achieved by using a narrower voltage window at the cost of energy density.…”

Experimental Study of Non-Destructive Approach on PEMFC Stack Using Tri-Axis Magnetic Sensor Probe

“…The use of fuel cells is expected to mitigate environmental problems such as exhaustion of fossil fuels and greenhouse gas emissions. One type of fuel cell, the proton-exchange membrane fuel cell (PEMFC), has low operation temperature and exhibits rapid start-up; therefore, it is used in not only co-generation systems [1] but also fuel cell vehicles (FCVs) [2]. The widespread commercialization of PEMFC stacks depends on their reliability and fault diagnosis.…”