20.500.12556/RUL-186216 Naprava za avtomatizirano preizkušanje zagonov elektromotorjev Automated Electric Motor Startup Testing Device Diplomsko delo obravnava razvoj naprave za avtomatizirano preizkušanje uspešnosti zagonov elektromotorjev. Naprava se vključi med laboratorijski napajalnik in preizkušano krmilno elektroniko z motorjem, nato pa v nastavljivih časovnih intervalih samodejno preklaplja napajalno pot motorja, meri njegov tok ter ovrednoti uspešnost vsakega zagona in beleži statistiko delovanja. Za napravo smo razvili tiskano vezje in programsko opremo. Napajalno pot motorja sklepa močnostni rele, ki ga mikrokrmilnik krmili prek pomožnega releja in tranzistorja, tok pa merimo z galvansko ločenim senzorjem s tehnologijo TMR. Iz vhodne napetosti smo z uporabo dveh stikalnih napajalnikov ustvarili napetost 24 V, ki jo potrebujemo za krmiljenje relejev, ter 3,3 V za napajanje mikrokrmilnika in logičnega dela vezja. Programsko opremo smo v jeziku C zasnovali tako, da časovno kritična opravila izvaja prekinitev časovnika vsako milisekundo, počasnejša opravila pa izvaja glavna zanka. Nastavitve, števce zagonov in statistiko delovanja hranimo v pomnilniku Flash. Zaslon in štiri tipke sestavljajo preprost uporabniški vmesnik, s katerim lahko uporabnik spreminja nastavitve in spremlja delovanje naprave. Napravo smo na koncu sestavili in preizkusili. Na podlagi ugotovljenih napak smo izvedli potrebne popravke ter izdelali izboljšano različico, ki deluje skladno s pričakovanji in je pripravljena za praktično uporabo. This thesis describes the development of a device for automated start-up testing of electric motors. The device is connected between a laboratory power supply and the motor control electronics under test. It then automatically switches the motor's supply path on and off at user-defined time intervals, measures the motor current to determine whether each start-up attempt was successful, and keeps statistics of the results. We developed both a printed circuit board and the accompanying software for the device. The motor's supply path is switched by a power relay, which the microcontroller controls through an auxiliary relay and a transistor, while the current is measured with a galvanically isolated sensor based on TMR technology. From the input voltage, two switching regulators generate the 24 V required for relay control and the 3.3 V that powers the microcontroller and the logic section of the circuit. The software, written in C, is designed so that time-critical tasks are executed by a timer interrupt every millisecond, while slower tasks are handled by the main loop. Settings, start counters, and statistics are stored in flash memory. A display and four buttons form a simple user interface through which the user can change settings and monitor the device's operation. Finally, we assembled and tested the device. Based on the faults we found, we made the necessary corrections and built an improved version, which works as expected and is ready for practical use. preizkušanje zagona elektromotorjev tiskano vezje programska oprema electric motor start-up testing printed circuit board firmware true false false Slovenski jezik Angleški jezik Diplomsko delo/naloga 2026-08-28 11:40:14 2026-08-28 11:40:24 2026-09-03 11:27:30 0000-00-00 00:00:00 2026 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 63417 289893635 Jurican_Aljaz_-_Naprava_za_avtomatizirano_preizkusanje_zagonov_elektromotorjev.pdf Jurican_Aljaz_-_Naprava_za_avtomatizirano_preizkusanje_zagonov_elektromotorjev.pdf 1 52F6AB4ED6997D178D9020BAFE4676ED 3b7e607146652bb27a901c3f2d8aaf0b98a7d692e6271ff0f0dbc0fed3efe6f9 13da4e78-a2c4-11f1-9b0d-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=245332 Fakulteta za elektrotehniko 0 0 0