| | SLO | ENG | Cookies and privacy

Bigger font | Smaller font

Show document

Authors:Kobovc, Blaž (Author)
Milanovič, Miro (Mentor) More about this mentor... New window
Mihalič, Franc (Co-mentor)
Files:.pdf UN_Kobovc_Blaz_2018.pdf (2,06 MB)
MD5: B9217EF00CE1433D53CBB6FEBE21E986
Work type:Diploma project paper (mb13)
Organization:FERI - Faculty of Electrical Engineering and Computer Science
Abstract:V projektni nalogi smo določili izgube tranzistorjev trifaznega pretvornika za vodenje BLDC s simulacijami v simulacijskem okolju LTSpice in zgradili matematični model za njihov analitični izračun. Sestavili smo trifazni pretvornik, vezje za mrtev čas, tvorili smo PŠM in dodali bootstrap vezje za proženje zgornjih tranzistorjev. Preverili smo prevodne in stikalne izgube za 80W motor z 48V napajanjem in še za enak motor z 12V napajanjem. Zanimalo nas je, kako se odražajo izgube s spreminjanjem frekvence in mrtvega časa in kateri način ima manjše izgube. Na koncu smo preverili sestavo izgub v obeh načinih in primerjali odstopanja matematičnega modela in simulacije.
Keywords:prevodne izgube, stikalne izgube, MOSFET, BLDC, DC-AC pretvornik, LTSpice, simulacije
Year of publishing:2018
Publisher:[B. Kobovc]
COBISS_ID:22113046 New window
Categories:KTFMB - FERI
Average score:(0 votes)
Your score:Voting is allowed only for logged in users.
AddThis uses cookies that require your consent. Edit consent...

Hover the mouse pointer over a document title to show the abstract or click on the title to get all document metadata.


License:CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Description:The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
Licensing start date:07.09.2018

Secondary language

Title:Evaluation of power losses in inverters for a BLDC motor
Abstract:The aim of the project was evaluation of power losses in inverter for a BLDC motor. We examined conduction and switching losses of MOSFET and diode with simulations in LTSpice and we also built an analytical loss model. The entire circuit in simulation consists of three phase converter, dead time circuit, circuit for sinusoidal pulse width modulation and bootstrap circuit for high side MOSFETs. Estimation of power losses was made for a 80W motor with two different source voltages, 12V and 48V. Comparison shows which source voltage has lower losses. We monitored losses with changing frequency and dead time. At the end, we analyzed losses and compared results between the analytical model and the simulation.
Keywords:conduction losses, switching losses, MOSFET, BLDC, DC-AC converter, LTSpice, simulation


Leave comment

You have to log in to leave a comment.

Comments (0)
0 - 0 / 0
There are no comments!

Logos of partners University of Maribor University of Ljubljana University of Primorska University of Nova Gorica