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1.
A z-axis-tolerant inductive power transfer system using a bipolar double d receiver coil structure
Jure Domajnko, Nataša Prosen, 2023, original scientific article

Abstract: This paper presents a solution to a limitation of wireless power transfer that arises when using two D-shaped transmitter and receiver coils. Double D, or DD, coils are well known to have a polar, directional magnetic field, which increases the misalignment tolerance in one of the directions. The misalignment tolerance is nonsymmetric, and it is significantly better in one of the directions, which can also be considered a shortcoming. An additional shortcoming of the DD coil is that it is dependent on the rotation around the z-axis, due to the directional magnetic field. This is not a problem when using classic planar spiral coils, which do not generate a directional magnetic field. Therefore, DD coils are not suitable for applications in which the z-axis orientation is not determined and fixed to specific angle and direction. This paper presents a unique design of a transmitter coil, based on a double DD coil. The transmitter coil consists of two DD coils which are perpendicular to each other. The proposed transmitter structure can excite the receiver DD coil in a way that the efficiency of the power transfer is the highest, regardless of the orientation. The proposed transmitter structure can, therefore, solve the problem with rotation of a single DD coil. The proposed system structure was tested on the small-scale experimental setup
Keywords: coil rotation, orientation detection, DD coils, IPT
Published in DKUM: 20.12.2023; Views: 261; Downloads: 6
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2.
A wireless power transfer system using a double DD quadrature coil structure
Jure Domajnko, Nataša Prosen, 2023, original scientific article

Keywords: wireless power transfer, inductive wireless power transfer, double DD coil, quadrature coil, increased power density
Published in DKUM: 20.12.2023; Views: 236; Downloads: 17
.pdf Full text (3,64 MB)
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3.
A control of a z-axis rotation-tolerant wireless power transfer system using a double DD coil
Jure Domajnko, Nataša Prosen, 2023, original scientific article

Keywords: rotation-tolerant, digital control, bipolar coil, double DD coil, better misalignment tolerance, IPT
Published in DKUM: 20.12.2023; Views: 275; Downloads: 15
.pdf Full text (3,42 MB)
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4.
Brezžični prenos energije z dvojnim DD navitjem : doktorska disertacija
Nataša Prosen, 2022, doctoral dissertation

Abstract: V tej nalogi je predstavljen razvoj nove strukture oddajnih in sprejemnih navitij za brezžični prenos energije. Razvita nova struktura navitij je zasnovana na osnovi navitij z usmerjenim magnetnim pretokom. Navitja omogočajo prenos večje gostote moči na enaki površini, kot že znana navitja. Zaradi razlike v novi strukturi navitij je bilo potrebno prilagoditi tudi sam sistem za brezžični prenos energije. Predstavljeni sta dve strukturi pretvornikov za vzbujanje navitij, ki omogočata prenos večje gostote moči. Za potrebe regulacije sistema z novo strukturo navitij, je bil izdelan linearni, malo-signalni model sistema. Na podlagi simulacije s programom Matlab, so bili izdelani in preizkušeni različni regulatorji. Načrtana sta bila regulator izhodne napetosti in regulator izhodnega toka. Na koncu je bilo delovanje nove strukture navitij preverjeno tudi na eksperimentalnem sistemu za brezžični prenos energije manjše moči. Primerjali smo izkoristek sistemov in največjo preneseno moč. Preizkusili smo integracijo tokovne in napetostne regulacije.
Keywords: brezžični prenos energije, induktivni prenos energije, razvoj navitij, DD navitja, večja gostota prenosa moči, napetostna in tokovna regulacija
Published in DKUM: 09.03.2023; Views: 854; Downloads: 210
.pdf Full text (22,26 MB)

5.
Modeliranje in analiza sistema za brezžično polnjenje
Nataša Prosen, 2018, master's thesis

Abstract: Vse večje povpraševanje po električnih napravah in avtomobilih je povečalo tudi zanimanje za brezžično polnjenje baterij. V tem magistrskem delu je opisan splošen sistem za brezžičen prenos energije in brezžično polnjenje. Modelirali smo visokofrekvenčni razsmernik, resonator s sprejemnim in oddajnim navitjem ter kompenzacijskim vezjem ter usmernik z bremenskim DC‐DC pretvornikom. Izpeljali smo regulacijske sheme, ki smo jih tudi simulirali. Na koncu smo določili tudi pogoje pod katerimi bo izkoristek pretvornika najvišji.
Keywords: brezžično polnjenje, razsmernik, usmernik, kompenzacijsko vezje, DC‐DC pretvornik, načrtovanje regulacije
Published in DKUM: 31.08.2018; Views: 1578; Downloads: 330
.pdf Full text (2,50 MB)

6.
Zlivanje podatkov iz pospeškometra, magnetometra in žiroskopa
Nataša Prosen, 2016, diploma project paper

Abstract: Zaradi motenj, ki jih ima signal mikroelektro-mehanskih senzorjev, pri obdelavi njihovih podatkov, pogosto uporabljamo metodo filtriranja imenovano zlivanje podatkov. V tem diplomskem delu je opisano, kako z zlivanjem podatkov s kalmanovim filtrom pridobiti orientacijske kote iz pospeškometra, magnetometra in žiroskopa. Na podlagi modela senzorja v prostoru stanj, bo na digitalni signalni krmilnik implementiran rekurzivni kalmanov filter, v obliki programske kode v C jeziku. Cilj je analizirati vpliv posameznih parametrov na končni, filtriran signal. Določitev parametrov bo potekala eksperimentalno. Glavni cilj je, nastaviti parametre filtra, tako da imajo podatki o orientacijskem kotu čim manj motenj, so bolj robustni ter pripravljeni za nadaljnjo obdelavo.
Keywords: zlivanje podakov, kalmanov filter, določitev orientacije v prostoru, odpravljanje motenj
Published in DKUM: 22.03.2017; Views: 2185; Downloads: 343
.pdf Full text (2,56 MB)

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