| PhD Seminar

Name of the Speaker: Ms. Bazilla Rashid (EE22D400)
Guide: Dr. Swarup K S
Venue: ESB-234 (Malaviya Hall)
Online meeting link: https://meet.google.com/jse-oywf-qmf
Date/Time: 7th May 2025 (Wednesday), 3 PM
Title: Cyber-Resilient Distributed Control for DC Microgrids: A Hybrid Discrete-Time Approach Against FDI and DoS Attacks

Abstract :

A novel cyber-resilient, hybrid discrete-time distributed secondary control framework for direct-current (DC) microgrids operating under cyberattacks is presented in this talk. Existing hybrid discrete-time controllers reduce communication overhead but lack adaptive mechanisms, making them vulnerable to unbounded false data injection (FDI) and intermittent denial-of-service (DoS) attacks. These attacks can disrupt voltage regulation and degrade current sharing, leading to system-wide instability. To address these challenges, the proposed controller, based on a “Hybrid Discrete Time Approach (HDTA)”, enhances a baseline hybrid framework by integrating an adaptive compensation mechanism that evolves based on local deviation metrics. An important aspect of the work is the controller’s resilience without requiring additional communication infrastructure. Stability guarantees were established using a hybrid Lyapunov analysis that covers both continuous and discrete dynamics. Simulation Studies were performed in MATLAB/ Simulink, to confirm the controller’s ability to maintain voltage and current objectives, even under severe cyberattacks, demonstrating its robustness and effectiveness across diverse test scenarios.