Krmilna enota za nizkonapetostni sinhronski stroj s trajnimi magneti

Novak, Matic (author), Zajec, Peter (mentor), Žemva, Andrej (co-mentor)

V magistrskem delu je opisan razvoj strojne opreme za pogon sinhronskega motorja s trajnimi magneti in izdelava tiskanega vezja. Projekt je bil s tehničnimi specifikacijami definiran in izdelan za potrebe podjetja Kolektor. V uvodnem delu je predstavljen sinhronski motor s trajnimi magneti, njegovo nadomestno vezje in vektorska regulacija. Slednja je bila izdelana s strani sodelavcev na oddelku Elektronika v podjetju Kolektor in je implementirana kot programska oprema na procesorju. V osrednjem delu je opisana zasnova električnega vezja in njegovih sestavnih delov. Izbrana je bila topologija trifaznega mostiča s tranzistorsko vejo, ki jo sestavlja par P in N kanalnega MOSFET-a. V nadaljevanju je delo osredotočeno na preklopno sekvenco MOSFET tranzistorja, saj je razumevanje tega pojava ključno za izračun toplotnih izgub in preprečitev neželenega vklopa. V nadaljevanju so predstavljeni posamezni prispevki močnostnih izgub ene MOSFET tranzistorske veje. Opisan je tudi neželeni vklop MOSFET tranzistorja in možne rešitve. V zaključnem delu so zbrani rezultati meritev toplotnih izgub in primerjava s teoretičnimi izgubami.

• Language: Slovenian
• Keywords: Sinhronski motor, vektorska regulacija, tiskano vezje, MOSFET, tranzistor, trifazni mostič, toplotne izgube, neželen vklop
• Work type: Master's thesis/paper
• Organization: FE - Faculty of Electrical Engineering
• Year: 2018
• PID: 20.500.12556/RUL-102747
• Publication date in RUL: 07.09.2018

Secondary language

• Language: English
• Title: Drive unit for low-voltage permanent magnet synchronous motor

Abstract

In this master thesis we described the development of a printed circuit board (PCB) to power a synchronous motor with permanent magnets. The project was defined and built for the needs of the company Kolektor. Firstly, we presented the synchronous motor with permanent magnets and its equivalent circuit. Then field orientated motor control was discussed, that is implemented as a software on the processor. It was made by colleagues at the department of Electronics in the company Kolektor. Furthermore, we presented the design of the electric circuit, where we described all of its parts. The chosen topology of the circuit is three phase bridge with a processor. Then we focused on the turn-on process of the MOSFET transistor, which is critical to understand in order to calculate the MOSFET power losses and understand MOSFET self turn on phenomena. In the next chapter we presented all contributions to MOSFET power losses of a half bridge configuration. Next, we presented the self turn on phenomena of the MOSFET transistor and possible solutions. And in the last chapter we showed measurements of power losses and we compared them to theoretical losses.

• Keywords: Synchronous motor, Field Orientated Control, Printed Circuit Board, MOSFET, transistor, three phase bridge, power losses, MOSFET self turn on phenomena