Title: Design of a Robust Power Hardware-in-the-Loop Interface Controller and an Enhanced Droop Control for Seamless Transfer
Speaker:
Dr. Soham Chakraborty
Postdoctoral Researcher
Energy Systems Integration Facility,
National Renewable Energy Laboratory,
Golden, Colorado, USA 80401
Date: 7th November 2024, 3:30 PM
Venue: C 241, MMCR, EE Dept, IISc
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Abstract:
In the first part of the talk, the challenges of synthesizing an interface between the hardware and software components of PHIL will be discussed and talked about from a modern control perspective for managing inherent uncertainties. The proposed robust PHIL interface controller based on mu-synthesis ensures multiple objectives that includes robust stability, performance, accuracy, and tracking capabilities. To assess the effectiveness and viability, a PHIL experiment is conducted that involves interfacing an emulated software system based on a 1-φ, 225-bus, 110V, 60Hz, 1MW residential sub-network of the University of Minnesota and suburban Minneapolis interfaced with multiple hardware under tests.
In the second part of the talk, a seamless transition strategy using a single and unified mode-dependent droop-controlled grid-forming inverters will be discussed. Seamless recovery of power to critical infrastructures, after grid failure, is a crucial need arising in scenarios that are increasingly becoming more frequent. The proposed control strategy regulates the output active and reactive power by the inverters to a desired value while operating in on-grid mode; seamless transition and recovery of power injections into the load after grid failure by inverters that operates in grid-forming mode all the time; and requires only a single bit of information on the grid/network status for the mode transition. A hardware experiment is conducted with two 3-φ, 480-V, 125-kVA grid-forming inverters, a 3-φ, 480-V, 270-kVA grid simulator, a physical grid switch, and a physical load bank.
Short Biography:
Soham Chakraborty received the B.E. degree from Bengal Engineering and Science University, Shibpur, India, in 2013, the M.Tech. degree from the
Indian Institute of Technology, Mumbai, India, in 2016, and the PhD degree from the the University of Minnesota, Minneapolis, MN, USA in 2023; all in electrical engineering. The title of his PhD thesis was “Robust Dynamic Resilient Power Grids Enabled By Modern Control Framework”.
He is currently working as a Post-Doctoral Fellow at the Energy Systems Integration Facility, National Renewable Energy Laboratory, USA from 2023.
