M. HARFMAN-TODOROVIC, L. PALMA, M. CHELLAPPAN, P. ENJETI, "Design Considerations for Fuel Cell Powered UPS", 2008, pp. 1984-1990.
Copyright - [Précédente] [Première page] [Suivante] - Home

Article : [SHEET580]

Titre : M. HARFMAN-TODOROVIC, L. PALMA, M. CHELLAPPAN, P. ENJETI, Design Considerations for Fuel Cell Powered UPS, 2008, pp. 1984-1990.

Cité dans :[THESE133] B. BIDOGGIA, Etude et réalisation de nouveaux convertisseurs connectant plusieurs sources d'énergies renouvelables au réseau, These de doctorat, septembre 2005 - aout 2008.
Auteur : M. Harfman-Todorovic (1)
Auteur : L. Palma (2)
Auteur : M. Chellappan (1)
Auteur : P. Enjeti (1)

Adresse : (1) Power Electronics & Fuel Cell Power Systems Laboratory - Department of Electrical Engineering - Texas A&M University - College Station, TX 77843-3128
Adresse : (2) Department of Electrical Engineering - Universidad de Concepción - Casilla 160 C Correo 3, Concepción, Chile

Info : 978-1-4244-1874-9/08/$25.00
Pages : 1984 - 1990
Date : 2008
Lien : private/HARFMAN-01.pdf - 483 Ko, 7 pages.

Abstract :
In this paper design consideration for a fuel cell powered, passive stand-by single-phase UPS system is detailed (Fig. 1).
A commercially available Ballard Nexa (43-26V, 1.2kW) PEMFC fuel cell along with suitable DC/DC and DC/AC power electronic converter modules is employed.
The proposed topology provides stable power to the load when the utility is interrupted.
The design considerations include: obtaining an electrical equivalent circuit for fuel cell to facilitate the mathematical analysis of interactions between the fuel cell internal impedance and DC/DC converter.
The analysis presented provides a design methodology to check for steady state and transient stability of fuel cell and DC/DC converter interaction in closed loop control to regulate the output DC voltage.
For this example system it is shown that the fuel cell’s dominant time constant is load dependent and varies from 8.97ms (light load) to 20.37ms (full load) resulting in fuel cells relatively slow dynamic response.
Design inequalities are reviewed to better understand the interaction between the DC/DC converter, fuel cell and potential instability conditions.
Finally, a supercapacitor module is incorporated to overcome the electrical transients such as instantaneous power fluctuations, slow dynamics of the fuel processor and overload conditions.
Energy stored in the supercapacitor is also utilized to handle a momentary overload for a short duration.
It is shown that the supercapacitor value calculated for overload conditions are sufficient to enhance stability and improve dynamics respond of the fuel cell.
Due to the absence of batteries the system satisfies the demand for an environmentally friendly clean source of energy.
A complete design example illustrating the amount of hydrogen storage required for 1 hour power outage and sizing of supercapacitors for transient load demand is presented for a 1.5kVA UPS.



[1] : S.B. Beikarov, A.Emadi, "Uninterruptible Power Supplies: Classification, Operation, Dynamics and Control," IEEE Applied Power Electronic Conference Proc., Mar. 2002, vol 1, pp. 597-604.
[2] : S. Karve, "Three of a kind", IEE Review, vol. 46, pp. 27-31, Mar. 2000.
[3] : Y.R. de Novaes, R.R. Zapelini, I. Barbi, "Design Considerations of a Long-Term Single-Phase Uninterruptible Power Supply Based on Fuel Cells," Power Electronics Specialists Conference, Jun. 2005, pp. 1628-1634.
[4] : W. Choi, P. Enjeti, J.W. Howze, "Fuel cell powered UPS systems: design considerations," Power Electronics Specialists Conference, Jun. 2003, pp. 385-390.
[5] : M. Pagano, L. Piegari, "Electrical Networks Fed by Fuel-Cells for Uninterruptible Electrical Supply," in ISIE 2002 Conf. Rec., vol.3, May 2002, pp.953-958.
[6] : M.S. Rauls, D.W. Novotny, D.M. Divan, "Design considerations for high frequency coaxial winding power transformers," Transactions on Industrial Electronics, vol. 29, pp. 375-381, Mar.-Apr. 1993.
[7] : O.D. Patterson and D.M. Divan, "Pseudo-resonant full-bridge DC/DC converter," Transactions on Power Electronics, vol. 6, pp. 671-678. , Oct. 1991.
[8] : G. Hua, F.C. Lee, M.M. Jovanovic, "An improved full-bridge zero-voltageswitched PWM converter using a saturable inductor," Transactions on Power Electronics, vol. 8, pp. 530-534, Oct. 1993.
[9] : N.H. Kutkut, D.M. Divan, R.W. Gascoigne, "An Improved Full-Bridge Zero-Voltage Switching PWM Converter Using a Two-Inductor Rectifier," Transactions on Industry Applications, vol. 31, pp 119-126, Jan.-Feb. 1993.
[10] : J. Correa, F. Farret, L. Canha, M. Simones," An Electrochemical-Based Fuel Cell Model Suitable for Electrical Engineering Automation Approach," Transactions on Industrial Electronics, vol. 51, pp. 1103-1112, Oct. 2004.
[11] : R. Amphlett, R. Mann, B. Peppley, P. Roberge, A. Rodigues, "A Practical PEM Fuel Cell Model For Simulation Vehicle Power Sources," Battery Conference on Applications and Advances Proc., Jan. 10-13, 1995, pp. 221-226.
[12] : M. Ceraolo, C. Miulli, A. Pozio, "Modeling static and dynamic behavior of proton Exchange membrane fuel cells on the basis of electro-chemical description"; Journal of Power Sources, No. 113, pp. 131-144, Jan. 2003.
[13] : R. Erickson, D. Maksimovic, Fundamentals of Power Electronics; Second Edition; Massachusetts ,Kluwer Academic Publishers, 2001.
[14] : L. Palma, M. Harfman-Todorovic, P. Enjeti, S. Choi, "Analysis of DC-DC Converter Stability in Fuel Cell Powered Portable Electronic Systems," Power Electronics Specialists Conference, Jun. 2006, pp. 1-6.
[15] : M.W. Chase Jr,. NIST-JANAF Thermochemical Tables, 4th Edition, Washington D.C: American Institute of Physics for the NIST, 1998.
[16] : J.H. Dymond and E.B. Smith, The Virial Coefficients of Pure Gases and Mixtures, A Critical Complication: Oxford, Oxford University Press, 1980.

Mise à jour le lundi 10 avril 2023 à 18 h 59 - E-mail : thierry.lequeu@gmail.com
Cette page a été produite par le programme TXT2HTM.EXE, version 10.7.3 du 27 décembre 2018.

Copyright 2023 : TOP

Les informations contenues dans cette page sont à usage strict de Thierry LEQUEU et ne doivent être utilisées ou copiées par un tiers.
Powered by www.google.fr, www.e-kart.fr, l'atelier d'Aurélie - Coiffure mixte et barbier, La Boutique Kit Elec Shop and www.lequeu.fr.