Research

My main research field is power electronics, the technology that ties a wide range of energy sources to the electric power grid, propels hybrid and electric vehicles, powers a countless variety of electronic systems, and makes it possible to operate battery-powered mobile devices for many hours. In the Colorado Power Electronics Center, we are exploring ways to achieve significant system-level advances in energy efficiency and power density via smart power electronics. I am especially active in the field of digital control and modeling of switched-mode power converters, control techniques for dc-dc multi-level converters, modulation and control of bi-directional dc-dc converters, and versatile solutions for grid-tied bi-directional ac/dc systems.

  • Current projects
    • Medium Voltage Resource Integration Technologies (MERIT), sponsored by the in the context of the Department of Energy Grid Modernization Initiative (GMI), aims at developing power electronics systems for medium-voltage and high-voltage applications.
    • Balancing Control Solutions for Indeterminate Converters (I-CON), supported by , investigates effective and low-complexity balancing solutions for indeterminate converters by exploring their inherent static and dynamic properties
    • Next-Generation Microinverter Development, sponsored by , explores innovative controls and designs for the next generation high-density, low-cost microinverters
    • High Power Density Universal 1-phase/3-phase Charger, sponsored by , addresses the development of a highly versatile dc fast charging station featuring single-phase and three-phase connection capabilities, efficient re-utilization of semiconductor devices, and optimization of internal energy buffer.
  • Past projects
    • Unified Control of Non-Inverting Buck-Boost DC-DC Converters is a project focused on addressing the control challenges of photovoltaic dc-dc optimizers by departing from traditional mode-based control architectures, and unify the control in order to improve robustness and dynamic response throughout the converter's operating range.