Professor Gupta's previous research predominantly centred on solar inverters interfacing with the utility grid or microgrid. His research encompasses the development of innovative topologies for grid interconnection aimed at reducing the DC bus voltage requirement while facilitating DC bus grounding. Furthermore, Professor Gupta's work extends to addressing power quality concerns and circulating current issues inherent in weak grid-coupled solar inverters.
Currently, he is investigating various Maximum Power Point Tracking (MPPT) techniques to optimise power extraction from the source to the load. Additionally, he is engaged in research on harmonic mitigation in grid current induced by non-linear loads by applying solar-based shunt active filters.
Professor Gupta intends to delve into control and hardware development aspects of wind energy power extraction, particularly focusing on Doubly Fed Induction Generator (DFIG) control. Additionally, he aims to explore the application of Silicon Carbide (SiC) based power converters to enhance the power density and efficiency of the converter system.