To extend the dual-port control scheme to handle more complex hybrid AC/DC grid topologies, such as multi-terminal HVDC systems with multiple AC grids, several considerations need to be taken into account.
Topology Configuration: The control scheme would need to be adapted to accommodate the additional terminals and AC grids in the system. This would involve developing control algorithms that can coordinate the operation of multiple converters in a coordinated manner.
Communication and Coordination: With multiple AC grids and terminals, communication and coordination between the converters become crucial. The dual-port control scheme would need to incorporate communication protocols to ensure synchronization and stability across the entire grid.
Dynamic Behavior: The control scheme should be designed to handle the dynamic behavior of the system, considering interactions between different AC grids and the DC link. This would involve advanced modeling and simulation to predict system responses accurately.
Fault Tolerance: In a multi-terminal HVDC system, fault tolerance becomes critical. The dual-port control scheme should be designed to detect and mitigate faults to ensure the reliability and stability of the grid.