Development of digital controller for Laboratory of power electronics

U ovome radu opisan je digitalni sustava za upravljanje učinskim pretvaračima. Sustav je u mogućnosti generirati istosmjerni PWM signal, jednofazni sinusni PWM signal, trofazni sinusni PWM signal te trofazni sinusni PWM signal s utisnutim trećim harmonikom. Dan je prijedlog za dodavanje naprednih mogućnosti upravljanja učinskim pretvaračima. Projektiranim sustavom podržano je, u okviru ograničenja sklopa, podešavanje svih parametara kojima se definira PWM signal. Posebna pozornost posvećena je korisničkom sučelju koje je izrađeno na način da podržava koncept vlasništva nad proizvoljnim brojem modulacijskih signala. U osnovi korisničke podrške uključena je i mogućnost postojanja više korisnika; najviše troje uslijed sklopovskih ograničenja. Prije testiranja provedena je simulacija u PLECS-u. Rad prototipa projektiranog sustava testiran je u Laboratoriju učinske elektronike, a modulacije signala snimljene su osciloskopom.This paperwork describes digital control device for power electronics converter. Realized control signal modulations include DC PWM modulation, single-phase sine PWM modulation, three-phase sine PWM modulation and three-phase PWM signal with injected third harmonic. Suggestion for advanced capabilities of power electronic control has been given. The developed system supports adjusting all parameters which define PWM modulation. Special attention has been given to the user interface which was built so that it supports ownership over arbitrary number of modulation signals; at most three due to the hardware limitations. Before testing the system was simulated with PLECS. Developed system prototype was tested in the Power electronics laboratory and signal modulations were recorded by the oscilloscope