prikaz prve stranice dokumenta Experimental characterization of laminated ferromagnetic materials for calculation of pulse width modulation induced iron losses in electrical machines
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doctoral thesis
Experimental characterization of laminated ferromagnetic materials for calculation of pulse width modulation induced iron losses in electrical machines
Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing, 2023. urn:nbn:hr:168:545054
Sirotić, Igor
University of Zagreb
Faculty of Electrical Engineering and Computing
Department of Electric Machines, Drives and Automation

Institutional repository: FER Repository

Cite this document

Sirotić, I. (2023). Experimental characterization of laminated ferromagnetic materials for calculation of pulse width modulation induced iron losses in electrical machines (Doctoral thesis). Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing. Retrieved from https://urn.nsk.hr/urn:nbn:hr:168:545054

Sirotić, Igor. "Experimental characterization of laminated ferromagnetic materials for calculation of pulse width modulation induced iron losses in electrical machines." Doctoral thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, 2023. https://urn.nsk.hr/urn:nbn:hr:168:545054

Sirotić, Igor. "Experimental characterization of laminated ferromagnetic materials for calculation of pulse width modulation induced iron losses in electrical machines." Doctoral thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, 2023. https://urn.nsk.hr/urn:nbn:hr:168:545054

Sirotić, I. (2023). 'Experimental characterization of laminated ferromagnetic materials for calculation of pulse width modulation induced iron losses in electrical machines', Doctoral thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, accessed 07 September 2024, https://urn.nsk.hr/urn:nbn:hr:168:545054

Sirotić I. Experimental characterization of laminated ferromagnetic materials for calculation of pulse width modulation induced iron losses in electrical machines [Doctoral thesis]. Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing; 2023 [cited 2024 September 07] Available at: https://urn.nsk.hr/urn:nbn:hr:168:545054

I. Sirotić, "Experimental characterization of laminated ferromagnetic materials for calculation of pulse width modulation induced iron losses in electrical machines", Doctoral thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, Zagreb, 2023. Available at: https://urn.nsk.hr/urn:nbn:hr:168:545054

Metadata
TitleExperimental characterization of laminated ferromagnetic materials for calculation of pulse width modulation induced iron losses in electrical machines
Title (croatian)Eksperimentalna karakterizacija lameliranih feromagnetskih materijala za izračun gubitaka u željezu električnih strojeva uzrokovanih modulacijom širine impulsa napona
AuthorIgor Sirotić
MBZ: 346585
MentorStjepan Stipetić (mentor)
Committee memberDamir Žarko (predsjednik povjerenstva)
Committee memberZlatko Hanić (član povjerenstva)
Committee memberAndrea Cavagnino https://orcid.org/0000-0003-0636-9012 (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Electrical Engineering and Computing
(Department of Electric Machines, Drives and Automation)
Zagreb
Defense date and country2023-06-05, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Electrical Engineering
Universal decimal classification
(UDC)		621.3 - Electrical engineering
Abstract
The use of inverter-fed electrical machines in industry and even in the small consumer market is prevalent today. With the transition from sinusoidal AC supply to PWM-generated supply, the losses in the entire electrical powertrain increase. The magnetic circuit is also affected by PWM-generated excitation, which is manifested by the occurrence of relatively small remagnetization cycles along the main one: total iron losses increase. Soft magnetic materials are an essential component of any electrical device, and accurate loss data is therefore essential for design purposes. However, data on magnetic materials is still only available for sinusoidal excitation, and there is no generally accepted method for accounting for PWM-induced losses at the design stage. For this purpose, the measurement setup was built and measurements were performed on cores with different geometrical parameters. The effect of the voltage generated by the PWM was analyzed and compared with the results obtained in other research papers which served as validation of the proposed setup. DC bias measurements were performed and data were collected in the form of 3D loss maps. Two methods for calculating the contribution of PWM-induced losses to the total losses AC were proposed and an corresponding algorithms were developed. The obtained 3D loss maps were used as magnetic material data, and the results of calculations using the methods were compared with the results of the performed AC measurements, which served as reference data. The results of the calculations agree well with the measurements.
Abstract (croatian)
U današnje vrijeme u industriji, ali sve više i na tržištu malih potrošača, prevladava upotreba električnih strojeva napajanih putem pretvarača napona i frekvencije. Prijelazom sa sinusnog izmjeničnog napajanja na napajanje generirano modulacijom širine impulsa napona (PWM), povećavaju se gubici cijelog električnog pogonskog sklopa. Tako generiran napon utječe i na magnetski krug što se očituje pojavom relativno malih ciklusa remagnetizacije duž glavnog ciklusa: povećavaju se ukupni gubici u željezu. Meki magnetski materijali su ključna komponenta svakog električnog uređaja i točni podaci o gubicima u materijalu su važni u projektiranju. Međutim, podaci o magnetskim materijalima dostupni su još uvijek samo u uvjetima sinusne pobude i ne postoji opće prihvaćena metoda za proračun gubitaka izazvanih PWM-om u fazi projektiranja. U tu svrhu izrađen je mjerni postav i provedena su mjerenja na prstenastim jezgrama različitih geometrijskih parametara. Utjecaj napona generiranog PWM-om je analiziran i uspoređen s rezultatima drugih istraživačkih radova što je poslužilo u svrhu validacije predloženog mjernog postava. Provedena su i mjerenja u uvjetima istosmjerne magnetizacije materijala i podaci su prikupljeni u obliku 3D mapa gubitaka. Predložene su dvije metode za izračunavanje doprinosa gubitaka izazvanih PWM-om ukupnim izmjeničnim gubicima i razvijeni su odgovarajući algoritmi. Dobivene 3D mape gubitaka korištene su za karakterizaciju magnetskog materijala, a rezultati proračuna uspoređeni su s rezultatima provedenih mjerenja u uvjetima izmjenične pobude. Rezultati proračuna dobro se slažu s mjerenjima.
Keywords
Keywords (croatian)
Languageenglish
URN:NBNurn:nbn:hr:168:545054
Promotion2023
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
Extentxxi, 207 str. : graf. prikazi ; 31 cm.
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2023-09-18 15:48:03