prikaz prve stranice dokumenta Characterization of power inductor losses and electromagnetic emissions of fast switching synchronous converters.
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doctoral thesis
Characterization of power inductor losses and electromagnetic emissions of fast switching synchronous converters.
Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing, 2020. urn:nbn:hr:168:755386
Bačmaga, Josip
University of Zagreb
Faculty of Electrical Engineering and Computing
Department of Electronics, Microelectronics, Computer and Intelligent Systems

Institutional repository: FER Repository

Cite this document

Bačmaga, J. (2020). Characterization of power inductor losses and electromagnetic emissions of fast switching synchronous converters. (Doctoral thesis). Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing. Retrieved from https://urn.nsk.hr/urn:nbn:hr:168:755386

Bačmaga, Josip. "Characterization of power inductor losses and electromagnetic emissions of fast switching synchronous converters.." Doctoral thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, 2020. https://urn.nsk.hr/urn:nbn:hr:168:755386

Bačmaga, Josip. "Characterization of power inductor losses and electromagnetic emissions of fast switching synchronous converters.." Doctoral thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, 2020. https://urn.nsk.hr/urn:nbn:hr:168:755386

Bačmaga, J. (2020). 'Characterization of power inductor losses and electromagnetic emissions of fast switching synchronous converters.', Doctoral thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, accessed 26 December 2024, https://urn.nsk.hr/urn:nbn:hr:168:755386

Bačmaga J. Characterization of power inductor losses and electromagnetic emissions of fast switching synchronous converters. [Doctoral thesis]. Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing; 2020 [cited 2024 December 26] Available at: https://urn.nsk.hr/urn:nbn:hr:168:755386

J. Bačmaga, "Characterization of power inductor losses and electromagnetic emissions of fast switching synchronous converters.", Doctoral thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, Zagreb, 2020. Available at: https://urn.nsk.hr/urn:nbn:hr:168:755386

Metadata
TitleCharacterization of power inductor losses and electromagnetic emissions of fast switching synchronous converters.
Title (croatian)Karakterizacija gubitaka zavojnica snage i elektromagnetskih emisija brzih sinkronih prekidačkih pretvornika.
AuthorJosip Bačmaga
MentorAdrijan Barić (mentor)
Committee memberAdrijan Barić (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Electrical Engineering and Computing
(Department of Electronics, Microelectronics, Computer and Intelligent Systems)
Zagreb
Defense date and country2020, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Electrical Engineering
Electronics
Universal decimal classification
(UDC)		621.3 - Electrical engineering
Abstract
A presented methodology for frequency-domain characterization of two-port DC-biased components is based on combination of series and shunt method. The test structure based using a bias tee is designed to allow the S-parameter measurements of the inductive components under different DC current levels. A methodology for time-domain characterization of power inductor losses is designed to allow the precise estimation of the power losses caused by the triangular current waveform. The designed setup allows adjustment of the parameters of the current waveform. The setup is based on GaN switches to allow the characterization of power losses in MHz range. A digital integrated circuit for adjustment of timing parameters of control signals is designed in a 0.18-µm CMOS technology. The resolution of dead-time adjustment of 120 ps is achieved. An impact of timing parameters of control signals is analyzed using the designed integrated circuit. The radiated emissions that are measured in a semi-anechoic chamber. The results show that an increase of radiated emissions is caused by the longer dead times. The conducted electromagnetic emissions are measured at the input of the converter using the EMI receiver and line impedance stabilization network. The dependence of the generated conducted emissions on the duty cycle is modelled using the quadratic regression polynomials. The scientific contributions of this dissertation are the following: integrated circuit architecture for adjustment of duty cycle and dead times of the control signals of switching converters with the precision of 120 ps, model of electromagnetic conducted emissions of synchronous switching converters, method for the characterization of DC losses and AC inductor losses at high frequencies caused by non-sinusoidal currents through inductors and broadband model of power inductors at full-load bias current.
Abstract (croatian)
Predložena metodologija za karakterizaciju komponenata u frekvencijskoj domeni te pri različitim vrijednostima istosmjerne struje koristi prednosti serijske i paralelne metode. Projektirana je testna mjerna struktura koja se temelji na sklopu za postavljanje statičke radne točke za mjerenje S-parametara induktivne komponente pri vrijednostima statičke struje do 5 A. Predložena je i metodologija za karakterizaciju gubitaka snage u zavojnicama u vremenskoj domeni. Mjerni sklop omogućuje podešavanje parametara valnog oblika struje. Mjerni sustav temelji se na prekidačkom pretvorniku koji koristi GaN sklopke čime je omogućena karakterizacija gubitaka snage u zavojnicama do nekoliko megaherca. Digitalni integrirani sklop za podešavanje vremenskih parametara upravljačkih signala projektiran je u 0.18-μm CMOS tehnologiji. Ostvarna preciznost podešavanja kašnjenja iznosi 120 ps. Utjecaj parametara upravljačkih signala na elektromagnetske emisije analiziran je koristeći projektirani integrirani sklop. Rezultati mjerenja u poluječnoj komori pokazuju da zračene smetnje rastu s porastom mrtvih vremena zbog veće struje na ulazu u prekidački pretvornik. Vođene elektromagnetske smetnje mjerene su na ulazu projektiranog pretvornika koristeći EMI prijemnik te mrežu za stabilizaciju impedancije. Ovisnost vođenih smetnji o prijenosnom naponskom omjeru opisana je ponašajnim modelom koristeći polinom drugog stupnja. Doprinosi ovog rada uključuju: arhitekturu integriranog sklopa za precizno podešavanje radnog omjera i mrtvog vremena kontrolnih signala prekidačkih pretvornika s preciznošću od 120 ps, model vođenih elektromagnetskih emisija sinkronih prekidačkih pretvornika, metodu karakterizacije istosmjernih gubitaka i izmjeničnih gubitaka zavojnica na visokim frekvencijama uzrokovanih nesinusoidalnom strujom kroz zavojnicu i širokopojasni model zavojnica snage pri punom strujnom opterećenju.
Keywords
Keywords (croatian)
Languageenglish
URN:NBNurn:nbn:hr:168:755386
Promotion2020
Study programmeTitle: Doctoral study programme "Electrical Engineering and Computing"
Study programme type: university
Study level: postgraduate
Academic / professional title: doktor/doktorica znanosti, po-dručje tehničkih znanosti (doktor/doktorica znanosti, po-dručje tehničkih znanosti)
Type of resourceText
Extent158 str. ; 30 cm
File originBorn digital
Access conditionsAccess restricted to students and staff of home institution
Terms of useLicence In copyright icon
Created on2020-11-19 12:19:34