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doctoral thesis
IZVEDBA PREDAJNE ZAVOJNICE U SUSTAVU BEZI ˇ CNOG PRIJENOSA ˇ ENERGIJE S HOMOGENOM RAZDIOBOM MAGNETSKOG POLJA
Osijek: Josip Juraj Strossmayer University of Osijek, Faculty of Electrical Engineering, Computer Science and Information Technology Osijek, 2023. urn:nbn:hr:200:162760
Bilandžija, Domagoj
Josip Juraj Strossmayer University of Osijek
Faculty of Electrical Engineering, Computer Science and Information Technology Osijek
Department of Communications
Chair of Electronics and Microelectronics

Cite this document

Bilandžija, D. (2023). IZVEDBA PREDAJNE ZAVOJNICE U SUSTAVU BEZI ˇ CNOG PRIJENOSA ˇ ENERGIJE S HOMOGENOM RAZDIOBOM MAGNETSKOG POLJA (Doctoral thesis). Osijek: Josip Juraj Strossmayer University of Osijek, Faculty of Electrical Engineering, Computer Science and Information Technology Osijek. Retrieved from https://urn.nsk.hr/urn:nbn:hr:200:162760

Bilandžija, Domagoj. "IZVEDBA PREDAJNE ZAVOJNICE U SUSTAVU BEZI ˇ CNOG PRIJENOSA ˇ ENERGIJE S HOMOGENOM RAZDIOBOM MAGNETSKOG POLJA." Doctoral thesis, Josip Juraj Strossmayer University of Osijek, Faculty of Electrical Engineering, Computer Science and Information Technology Osijek, 2023. https://urn.nsk.hr/urn:nbn:hr:200:162760

Bilandžija, Domagoj. "IZVEDBA PREDAJNE ZAVOJNICE U SUSTAVU BEZI ˇ CNOG PRIJENOSA ˇ ENERGIJE S HOMOGENOM RAZDIOBOM MAGNETSKOG POLJA." Doctoral thesis, Josip Juraj Strossmayer University of Osijek, Faculty of Electrical Engineering, Computer Science and Information Technology Osijek, 2023. https://urn.nsk.hr/urn:nbn:hr:200:162760

Bilandžija, D. (2023). 'IZVEDBA PREDAJNE ZAVOJNICE U SUSTAVU BEZI ˇ CNOG PRIJENOSA ˇ ENERGIJE S HOMOGENOM RAZDIOBOM MAGNETSKOG POLJA', Doctoral thesis, Josip Juraj Strossmayer University of Osijek, Faculty of Electrical Engineering, Computer Science and Information Technology Osijek, accessed 14 March 2025, https://urn.nsk.hr/urn:nbn:hr:200:162760

Bilandžija D. IZVEDBA PREDAJNE ZAVOJNICE U SUSTAVU BEZI ˇ CNOG PRIJENOSA ˇ ENERGIJE S HOMOGENOM RAZDIOBOM MAGNETSKOG POLJA [Doctoral thesis]. Osijek: Josip Juraj Strossmayer University of Osijek, Faculty of Electrical Engineering, Computer Science and Information Technology Osijek; 2023 [cited 2025 March 14] Available at: https://urn.nsk.hr/urn:nbn:hr:200:162760

D. Bilandžija, "IZVEDBA PREDAJNE ZAVOJNICE U SUSTAVU BEZI ˇ CNOG PRIJENOSA ˇ ENERGIJE S HOMOGENOM RAZDIOBOM MAGNETSKOG POLJA", Doctoral thesis, Josip Juraj Strossmayer University of Osijek, Faculty of Electrical Engineering, Computer Science and Information Technology Osijek, Osijek, 2023. Available at: https://urn.nsk.hr/urn:nbn:hr:200:162760

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Metadata
TitleIZVEDBA PREDAJNE ZAVOJNICE U SUSTAVU BEZI ˇ CNOG PRIJENOSA ˇ ENERGIJE S HOMOGENOM RAZDIOBOM MAGNETSKOG POLJA
Title (english)PERFORMANCE OF TRANSMISSION COIL IN WIRELESS TRANSMISSION SYSTEM ENERGIES WITH HOMOGENE MAGNETIC FIELD DISTRIBUTION
AuthorDomagoj Bilandžija
MentorDavor Vinko (mentor)
Committee memberVanja Mandrić (predsjednik povjerenstva)
GranterJosip Juraj Strossmayer University of Osijek
Faculty of Electrical Engineering, Computer Science and Information Technology Osijek
(Department of Communications)
(Chair of Electronics and Microelectronics)
Osijek
Defense date and country2023-01-18, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Electrical Engineering
Radio Communications
Universal decimal classification
(UDC)		621.3 - Electrical engineering
Abstract
Razdvajanje frekvencije i neuskladenost impedancije posljedice su promjene faktora magnetske veze izmedu predajne i prijemne zavojnice odnosno promjene poloˇzaja prijemne zavojnice u odnosu na predajnu zavojnicu u konvencionalnom rezonantnom induktivnom sustavu za beˇziˇcni prijenos energije. Problemi razdvajanja frekvencije i neuskladenosti impedancije u rezonantnom induktivnom prijenosu energije mogu se ublaˇziti generiranjem homogenog magnetskog polja u ve´cini povrˇsine ravnine punjenja.... More Homogenost magnetskog polja postiˇze se optimiranjem geometrije predajne zavojnice i optimiranjem raspodjele struje izmedu namotaja iste zavojnice. U ovoj disertaciji provodi se postupak odredivanja strukture dvoslojne pravokutne predajne 3D zavojnice za generiranje homogenog magnetskog polja iscrpnim pretraˇzivanjem. Mjerenja magnetskog polja na prototipu takve zavojnice potvrduju homogenu regiju koja ˇcini 55.3% povrˇsine ravnine napajanja. Nakon ˇsto je odredena struktura predajne zavojnice uvodi se pretpostavka da ´ce raspodjela struje izmedu namotaja predajne zavojnice uz optimizaciju geometrije sada poznate strukture pridonijeti poboljˇsanju svojstava predajne zavojnice. Optimizacija se provodi u dva koraka: optimizacija 2D modela i optimizacija 3D modela. Razlog tome je smanjenje prostora pretraˇzivanja 147 B. SAZETAK ˇ odnosno dimenzije problema koji se nastoji rijeˇsiti optimizacijom 3D modela. Optimalne vrijednosti varijabli odluka iz optimizacije 2D modela (geometrijske varijable drugog sloja zavojnice, omjer struja) koriste se kao konstante u optimizaciji 3D modela. Optimizacija 2D modela 3D predajne zavojnice obavlja se u kosimulaciji Python-FEMM uz pomo´c MIDACO alata i genetskog algoritma te diferencijalne evolucije iz pygmo biblioteke. Najbolja rjeˇsenja fitnes funkcije ostvarena su diferencijalnom evolucijom. Nuˇzna je i optimizacija u Ansys Maxwell-u zbog toga ˇsto je to programski paket koji ima opciju simulacije, a takoder i optimizacije 3D modela s pomo´cu alata Optimetrics tool. Odabire se konstanta udaljenost prijenosa od 30 mm. Tako optimirana zavojnica ima bolja svojstva u odnosu na prvotnu. Homogena regija ˇcini 67.78% povrˇsine ravnine napajanja, dubina zavojnice smanjena je za 28.8% te je postignuta ve´ca srednja vrijednost jakosti magnetskog polja u ravnini napajanja. Less
Abstract (english)
Frequency splitting and impedance mismatching are happening due to magnetic coupling factor variations. i.e. due to relative shift in receiving coil position with respect to transmitting coil in a conventional resonant inductive wireless power transfer system. Frequency splitting and impedance mismatching can be mitigated by generating homogeneous magnetic field intensity at the majority of the charging plane surface. Homogeneity of the magnetic field intensity are achieved by... More optimization of the transmitting coil geometry and current ratio among the coil turns. In this PhD thesis, the process of determining geometry of the 3D rectangular coil with two layers using exhaustive search is carried out. Measurements that were carried out with prototype of such optimized 3D coil verified that homogeneous region occupies at least 55.3% of the charging plane surface. Then, after the 3D coil structure is determined, a hypothesis is introduced. It is supposed that different current ratio among turns of such coil along with geometry optimization will contribute to achieve better features of known 3D coil structure. Optimization is carried out in two steps: optimization of the 2D model and optimization of the 3D model. Main reason to split optimization is to reduce the search space, i.e. dimension of the problem that is trying to be solved. Optimal va149 B. ABSTRACT lues of decision variables (variables that represent coil second layer geometry and current ratio) obtained from 2D model optimization are used as constants in optimization of 3D model. 2D model optimizations are executed in Python-FEMM co-simulation along with MIDACO tool. Furthermore, genetic algorithm and differential evolution from pygmo library are also applied in solving 2D model optimization. Best fitness function value is acheived using differential evolution strategy. Optimization in Ansys Maxwell is necesarry because of its feature that 3D models can be simulated and also optimized using Optimetrics Tool of Ansys Maxwell. Transfer distance in both 2D and 3D models is set to be 30 mm. Such optimized coil own better features compared to coil obtained by exhaustive search. Homogeneous region now occupies 67.78% of charging plane surface, coil depth is reduced by 28.8% and also the higher value of average magnetic field intensity at charging plane is achieved. Less
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:200:162760
Promotion2023-01-18
Study programmeTitle: Obtaining a doctorate of science outside of doctoral studies
Study programme type: university
Study level: postgraduate
Academic / professional title: doktor/doktorica znanosti (doktor/doktorica znanosti)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
RepositoryFaculty of Electrical Engineering, Computer Science and Information Technology Osijek
Created on2023-02-08 08:50:08
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