Adaptivno upravljanje istosmjernim uzlaznim pretvornikom napajanim gorivnim člankom

doctoral thesis

• Title (english): Adaptive control of the DC/DC boost converter supplied by the fuel cell
• Author: Toni Bjažić
• Mentor: Željko Ban (mentor)
• Committee member: Nedjeljko Perić (predsjednik povjerenstva)
• Committee member: Željko Ban (član povjerenstva)
• Committee member: Željko Jakopović (član povjerenstva)
• Committee member: Darko Žubrinić (član povjerenstva)
• Committee member: Miro Milanović (član povjerenstva); strani drzavljanin: Nije dostupno
• Granter: University of Zagreb; Faculty of Electrical Engineering and Computing; (Department of Control and Computer Engineering); Zagreb
• Defense date and country: 2010-11-29, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Computing
• Universal decimal classification (UDC): 004 - Computer science and technology. Computing. Data processing

Abstract

U ovom radu prikazano je adaptivno upravljanje uzlaznim istosmjernim pretvaračem napajanim gorivnim člankom. Dani su matematički modeli gorivnog članka PEM tipa te uzlaznog istosmjernog pretvarača u naponskom i strujnom načinu upravljanja te kontinuiranom i diskontinuiranom režimu rada. Eksperimentalno su određeni linearni matematički modeli uzlaznog pretvarača i uzlaznog pretvarača zajedno s emulatorom gorivnog članka BCS 64-32. Projektiran je osnovni PI regulator za radnu točku sustava određenu nominalnom snagom pretvarača. Odstupanja od radne točke kompenzirana su adaptivnim regulatorom s referentnim modelom reduciranog reda i signalnom adaptacijom s reduciranim vektorom varijabli stanja. Upotrebom algoritma reduciranog reda, smanjen je broj težinskih koeficijenata u algoritmu, te je predložen postupak određivanja težinskih koeficijenata adaptivnog algoritma temeljen na kombinaciji metode postavljanja polova i nula i metode optimiranja. Nakon primjene predloženog uvjeta zasnovanog na metodi postavljanja polova i nula, optimalni težinski koeficijenti adaptivnog algoritma mogu se odrediti u samo nekoliko iteracija, i to bez primjene računala, čime se znatno olakšava primjena algoritma na realnim sustavima. Simulacijski i eksperimentalni rezultati pokazuju da se dinamičko ponašanje izrazito nelinearnog regulacijskog sustava s gorivnim člankom i uzlaznim pretvaračem, bilo u kontinuiranom, bilo u diskontinuiranom režimu rada, može prilično točno opisati dinamičkim ponašanjem referentnog modela, dakle, linearnim sustavom s nepromjenjivim parametrima.

Abstract (english)

In this paper the adaptive control of the DC/DC boost converter supplied by the fuel cell is described. The mathematical models of PEM fuel cell and DC/DC boost converter controlled in voltage and current mode, as well as in continuous and discontinuous conduction modes are given. The linear mathematical models of the boost converter and boost converter supplied by the emulator of the fuel cell BCS 64-32 are determined experimentally. A basic PI controller is designed for operating point determined by boost converter’s nominal power. Deviations from the nominal operating point are compensated by the adaptive controller with reduced order reference model and signal adaptation with a reduced vector of state variables. Using the reduced order algorithm, the number of error weighting coefficients in the algorithm is reduced. The procedure for determining the adaptive algorithm’s weighting coefficients, based on a combination of poles and zeros placement method and optimization method is proposed. After applying the proposed requirements based on the method of poles and zeros placement, the optimal adaptive algorithm’s weighting coefficients can be determined in just a few iterations, without use of computer, thus greatly facilitating the application of the algorithm on real systems. Simulation and experimental results show that the dynamic behavior of highly nonlinear control system with the fuel cell and DC/DC boost converter, either in continuous, or in discontinuous conduction mode, can be fairly accurately described the dynamic behavior of the reference model, i.e., the linear system with fixed parameters.

• Keywords: adaptivno upravljanje; referentni model reduciranog reda; signalna adaptacija; gorivni članak; gorivna ćelija; uzlazni istosmjerni pretvarač
• Keywords (english): adaptive control of the DC/DC boost converter supplied by the fuel cell
• Language: croatian
• URN:NBN: urn:nbn:hr:168:567778
• Project: Number: 036-1201837-3020; Title: Sustav upravljanja energetskog izvora s kogeneracijom na osnovi gorivnih članaka; Leader: Željko Ban; Jurisdiction: Croatia; Funder: MZOS; Funding stream: ZP
• Study programme: Title: Computer Science; Study programme type: university; Study level: postgraduate; Academic / professional title: Doktor znanosti (Doktor znanosti)
• Catalog URL: http://lib.fer.hr/cgi-bin/koha/opac-detail.pl?biblionumber=34349
• Type of resource: Text
• Extent: 148 ; 30 cm
• File origin: Born digital
• Access conditions: Closed access
• Created on: 2019-06-07 07:54:48