Abstract
This paper describes the design of a three-phase calibrator, i.e. a voltage signal generator. The calibrator core is an IGBT converter with a low-pass RLC filter at the output that attenuates voltage and current higher harmonics. A processor that includes field programmable gate array (FPGA) technology enables very high speeds of digital signal processing. Speeds that FPGA processor achieves due to parallel architecture are in the nanosecond range. Implemented algorithms are used to generate sinusoidal pulse width modulated (SPWM) signals to control a three-phase IGBT bridge. Voltage amplitudes and phase angles are controlled to compensate nonlinear system’s components, temperature changes, voltage drops on parasitic components, etc. Experimental results show great potential of the proposed approach for calibrator design for various electrical measuring instruments.
Goran Petrović
Full Professor | Department of Electrical Measurements
Prof. dr. sc. Goran Petrović is a full professor at the Faculty of Electrical Engineering, Mechanical Engineering and Architecture in Split. His research interests include measurement of electrical and process quantities, analysis of geoelectrical and geothermal features of the soil, instrumentation for smart grids, measurement and application of synchrophasors. He is the author of numerous papers published in top-tier scientific journals and contributed to valuable international and national scientific projects.
Marin Despalatović
Full Professor | Department of Electrical Drives and Industrial Control
Full professor at the Faculty of Electrical Engineering, Mechanical Engineering, and Naval Architecture in Split, where he teaches courses Electric Machines, Electric Drive Systems, and Electromechanical System Modeling. His research focuses on power systems, energy storage, and smart grid technologies, with active participation in multiple national and international projects aimed at advancing energy infrastructure and improving system stability.