GREP is a research group of the Electronic Engineering Department at the Technical University of Calatonia (UPC - BarcelonaTech).

GREP is contributing to the field of Power Electronics, focusing on research projects and scientific publications, as well as in the development of new technologies, products, and services. In all cases, our orientation to research and innovation is aligned with our educational activity at the B.S., M.S., and Ph.D. levels.

The main expertise of GREP is in power electronics systems using multilevel technology and connected to ac systems, with contributions on:

  • New power conversion topologies.
  • New power converter modulation strategies with improved performance in terms of distortion, voltage balance, losses, etc., and enabling a reduced converter size and cost.
  • New converter control strategies to fulfill system level specifications.

The main application area of GREP research is renewable energy systems (wind energy systems and photovoltaic systems), enabling the optimal energy extraction of the renewable source and the optimal connection to the electrical grid and/or the load, by a proper power electronics system. Another application area where GREP has experience is ac motor drives, with an special focus in electric vehicles.