Bidirectional Power Flow and Inverter Control in AC/DC Hybrid Mi crogrids (BiFlow-HMG)

The Bidirectional Power Flow and Inverter Control in AC/DC Hybrid Microgrids (BiFlow-HMG) 
project explores advanced control strategies for managing energy distribution and conversion in 
hybrid microgrids, with a specific focus on the coordination of bidirectional inverters. As renewable 
energy integration accelerates, maintaining stable and efficient operation in networks that 
simultaneously support AC and DC subsystems has become a critical challenge. The project 
addresses this challenge by designing and testing an adaptive inverter control mechanism 
capable of managing both real and reactive power under varying load and generation conditions. 
Conducted under the ERIGrid 2.0 framework, the project utilized a real-time digital simulation 
platform combined with Hardware-in-the-Loop (HIL) infrastructure to emulate realistic operating 
scenarios and validate the proposed control approach. The experimental setup featured PV 
systems, battery energy storage units, DC-DC and DC-AC converters, and critical loads 
connected in a flexible hybrid topology. 
The project focused on enabling seamless bidirectional power flow, improving power quality, and 
enhancing system resilience through dynamic inverter control schemes. The results 
demonstrated significant improvements in voltage stability, inverter utilization efficiency, and loss 
reduction, particularly under conditions involving high renewable penetration and variable loading. 
The adaptive control approach also facilitated effective transitions between grid-connected and 
islanded operation modes. 
BiFlow-HMG contributes to the ongoing development of autonomous and intelligent microgrid 
operation, aligning with the goals of next-generation energy systems that prioritize flexibility, 
efficiency, and resilience. The findings support further adoption of hybrid AC/DC architectures and 
reinforce the importance of coordinated inverter control in future power networks.