Medium Voltage Direct Current (MVDC) Fault Detection, Localization, and Isolation

In this phase I we propose to extend our work on MVDC isolation device to include fault detection, and fault localization circuitry. We have previously developed under an SBIR a 6 kVDC, 2000A isolation device that was built and tested in MVDC ship distribution system laboratory at FSU CAPS. In this phase I we propose to use rogowski coils and hall effect probes to detect faults and we propose to announce the presence of faults to a central control system to command the rectifier modules to limit then interrupt current as appropriate for the isolation device open and isolate the faulted circuit. In this phase I we propose to conduct simulation and analysis to understand the effect of limiting and interrupting current from the rectifier on the ship distribution system. We plan to conduct this effort in collaboration with FSU-CAPS where they will be responsible for the analysis and simulations and IAP will be responsible for developing the fault detection and localization circuitry (hardware and software).If this effort is successful it will lead to a product that will enable MVDC ship distribution system that is less costly and higher power density than current systems.