Real-time simulation of DC-DC flyback converter using FSS Mini

Abstract

Simulation is an extremely valuable tool for designing, operating and understanding complex systems in Power systems and Power Electronics. Broadly simulation can be of two types, Off-line and Real-time Simulation. Off-line simulation uses a digital computer and real time simulation uses a dedicated high speed digital processing hardware. Real time simulation allows analysis of a physical system in real-time. Full Spectrum Simulator (FSS) provides both off-line and real-time simulation capabilities at an affordable cost, easily configurable for custom applications. FSS is useful for real-time simulation of large power systems and power electronic equipments. Applications of real-time simulation includes training and demonstration of power electronic systems, closed loop testing of power subsystem protective relays, evaluation of control hardware and software and testing of high power systems like FACTS devices, Custom Power devices, AC/DC motor drives etc. This paper deals with simulation of a DC-DC fly back converter in real-time using FSS Mini. For real-time simulation using FSS, the main objective was to create an average model of the fly back converter in CCM mode of operation. Average model was derived from the circuit equations and designed the values of the parameters used in the averaged model. Simulation using MATLAB was done first and obtained the output voltage waveform. Same equations were used for creating the library element in the real-time simulation library. Then it was simulated using FSS and obtained the real-time simulation output in a DSO.