@article{madadi_zou_bhattacharya_2022, title={Unified Control Method for Seamless Transition of a Weak Grid Connected AC Microgrid to Islanded Mode}, ISSN={["2329-3721"]}, DOI={10.1109/ECCE50734.2022.9947705}, abstractNote={A unified control approach for a weak-grid connection ac microgrid has been proposed that not only results in a seamless transition from grid following operation mode to grid forming operation mode, but also offers fast reference tracking and is highly robust to the sudden changes in the load. The effectiveness of the proposed controller has been evaluated by simulation in PLECS compared to a conventional control method with separate controllers for each mode of operation. The performance of the algorithm has been evaluated by simulation of a 100kW inverter in PLECS and controller hardware-in-the loop (CHIL) testbed setup under different operating conditions.}, journal={2022 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE)}, author={Madadi, Mehrnaz and Zou, Ke and Bhattacharya, Subhashish}, year={2022} }
 @article{madadi_bhattacharya_2021, title={Adaptive Nonlinear Droop Control with Dynamic State-of-Charge Balancing Capability for Batteries in DC Microgrids}, ISSN={["1048-2334"]}, DOI={10.1109/APEC42165.2021.9487320}, abstractNote={Droop control is one of the generally accepted methods for interfacing various voltage sources in a dc microgrid that could deal with challenges such as load-sharing accuracy and dc voltage regulation among the sources. This paper proposes a novel adaptive nonlinear droop control method based on dynamic state-of-charge (SOC) balancing of battery energy storage systems (BESSs) and the converters' output current in a dc microgrid. In this decentralized communication-less method, the BESS with higher SOC delivers more power with the minimum trade-off between the voltage regulation and current-sharing accuracy. The simulation and Hardware-in-the-loop (HIL) testbed results verify the stability and load-sharing, and voltage regulation capability of the proposed controller technique compared to other nonlinear and adaptive droop methods.}, journal={2021 THIRTY-SIXTH ANNUAL IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION (APEC 2021)}, author={Madadi, Mehrnaz and Bhattacharya, Subhashish}, year={2021}, pages={55–61} }
 @article{pal_madadi_gulur_bhattacharya_2021, title={Grid Compliant Power Conditioning System for Solid Oxide Fuel Cells}, ISSN={["2329-5759"]}, DOI={10.1109/PEDG51384.2021.9494182}, abstractNote={Fuel Cell (FC) energy-based systems are a growing source of distributed generation (DG) and are typically connected through a power conversion system (PCS) to the ac distribution network. In this work, broad control guidelines are analyzed and discussed for interconnecting Solid Oxide Fuel Cells (SOFC) based distribution systems to the utility grid. A two-stage PCS (comprising of a Boost Converter and a 3ϕ, Voltage Source Converter) is designed and utilized for controlling the power being injected into the utility grid. Additionally, the PCS is equipped with an advanced supervisory control scheme to adhere to IEEE 1547 requirements for utility grid interconnection. The overall architecture, including the SOFC system along with the appropriate PCS is implemented on a Real-Time Digital Simulation (RTDS) platform to evaluate and demonstrate the usefulness of proposed supervisory control schemes.}, journal={2021 IEEE 12TH INTERNATIONAL SYMPOSIUM ON POWER ELECTRONICS FOR DISTRIBUTED GENERATION SYSTEMS (PEDG)}, author={Pal, Shruti and Madadi, Mehrnaz and Gulur, Srinivas and Bhattacharya, Subhashish}, year={2021} }