Title Upravljanje BLDC motorima Title (english) BLDC motor control Author Martin Marčec Mentor Josip Srpak (mentor) Committee member Ivan Šumiga (predsjednik povjerenstva)Committee member Josip Srpak (član povjerenstva) Committee member Josip Nađ (član povjerenstva)Granter University North Defense date and country 2024-09-02, Croatia Scientific / art field, TECHNICAL SCIENCES Abstract Upotreba elektromotora je u današnje vrijeme vrlo široka i raznovrsna. BLDC motori sve više dobivaju na važnosti zbog efikasnosti, pouzdanosti i svestranosti. Koriste elektroničku komutaciju za razliku od mehaničkih četkica, što pridonosi navedenim prednostima.
Dizajnirani su da se smanji gubitak energije čime su efikasniji od motora s četkicama. Izostanak četkica pridonosi pouzdanosti, odnosno smanjuje trošenje i kvarenje rezultirajući dužem životnom vijeku. Mogu se precizno kontrolirati korištenjem sustava s povratnom vezom, što je prigodno za primjene kao što su dronovi, CNC strojevi i medicinski uređaji. Također su kompaktni i relativno lagani po izradi, zbog čega pružaju veliku gustoću snage, odnosno daju više snage za svoju veličinu u usporedbi sa klasičnim DC motorima.
Njihova svestranost omogućuje široku primjenu kod električnih vozila, dronova i letećih vozila, industrijske automatizacije, kućnih uređaja, električnih alata, medicinskih uređaja, solarnih trackera itd.
Na početku rada se detaljno objašnjavaju frekventni pretvarači, što je kasnije teorijska baza za opisivanje rada kontrolera (uređaja) za upravljanje nad motorom. Tek kasnije u radu se opisuje konstrukcija i način rada BLDC motora, te se detaljno pojašnjava pokretanje i upravljanje motora. Opisuje se izrada i programiranje kontrolera pri čemu se primjenjuju prije napisana saznanja o frekventnim pretvaračima, BLDC motorima te njegovima metodama pokretanja i upravljanja. U radu su priložene sheme izrade kontrolera i programski kod za njegovo ispravno funkcioniranje.
Abstract (english) The usage of electric motors is very broad and versatile in today's world and age. BLDC motors are becoming essential due to their efficiency, reliability and versatility. They use electronic commutation unlike mechanical brushes, which contributes to their advantages.
The motors are designed to minimize energy losses which makes them more efficient than brushed motors. The absence of brushes contributes to reliability giving them longer lifespan by minimizing wear and tear. They can be precisely controlled using feedback loop, which is vital in applications like drones, CNC machines and medical devices. Also, they are compact and lightweight providing high power density, meaning that they deliver more power for their size compared to regular DC motors.
Their versatility allows them to be used in many applications such as electric vehicles, drones and flying vehicles, industrial automation, home devices, power tools, medical devices, solar trackers and much more.
In the beginning of this thesis, variable frequency drives are explained, which creates theoretical base for describing operation of the motor controller device. Later in thesis, construction and working principles of the BLDC motor are described as well as starting and motor control. Making and programming of the device is also explained using theoretical knowledge attained in previous chapters about variable frequency drives, BLDC motors and their methods of starting and controlling. At the end of the thesis, schematics and programming code of the controller are attached.
Keywords
BLDC motor
ESC kontroler
povratna elektromotorna sila
stator
rotor
permanentni magneti
statorski namoti
mikroupravljač
Keywords (english)
BLDC motor
ESC controller
back electromotive force
stator
rotor
permanent magnets
stator windings
microcontroller
Language croatian URN:NBN urn:nbn:hr:122:437935 Study programme Title: Electrical engineering; specializations in: Automation, Biomedical electronics Type of resource Text File origin Born digital Access conditions Open access Terms of use Created on 2024-09-25 09:39:25
