Development of Digital Control Unit for Power Electronics Laboratory

U ovome radu predstavljen je i razrađen prijedlog digitalnog sklopovskog sustava za upravljanje učinskim pretvaračima. Ostvarene modulacije upravljačkog signala uključuju istosmjerni PWM signal, jednofazni sinusni PWM signal, trofazni sinusni PWM signal te trofazni sinusni PWM signal s utisnutim trećim harmonikom. Projektiranim sustavom podržano je, u okviru ograničenja sklopa, podešavanje svih parametara kojima se definira PWM signal. Posebna pozornost posvećena je korisničkom sučelju ko je izrađeno na način da podržava koncept vlasništva nad proizvoljnim brojem modulacijskih signala. U osnovi korisničke podrške uključena je i mogućnost postojanja više korisnik; najviše troje uslijed sklopovskih ograničenja. Ispravan rad projektiranog sustava testiran je na pultovima u Laboratoriju učinske elektronike, a modulacije signala snimljene su osciloskopom.In this paperwork proposal of digital control unit for power electronics converter control was presented and elaborated. Realized modulations of the control signal include direct current PWM signal, single-phase sine PWM signal, three-phase sine PWM signal and three-phase PWM signal with injected third harmonic. The developed system has made possible to adjust all parameters of the PWM signal according to the hardware limitations. Special attention has been given to the user interface which was built so that it supports ownership over arbitrary number of modulation signals. In the basis of the program support, possibility of multiple users was also included; at most three due to the hardware limitations. Correct operation of the developed system was tested on the Power electronics laboratory counters and signal modulations were recorded by the oscilloscope