Naval Combat Survivability Testbed

Next-generation, all-electric warships will be equipped with highly complex energy generation and distribution systems that must be capable of operating under very stringent conditions. These systems will include several power electronics systems interconnected by AC and DC busses to feed a variety of complex loads and controls. The design, test, commissioning, operation, and maintenance of such systems will be a challenge due to the complexity of the totally interconnected system. In particular, the stability assessment of such systems is challenging.

This demo implements an augmented version of the Naval Combat Survivability Testbed (NCST) distribution with 2 synchronous machine generators. In the system, each generator feeds one of the DC busses. From each bus, an SSCM (ship service converter module) feeds each load in a redundant way so that if power fails on one bus, the load can be fed from the other bus. SSCM are buck converters similar to the CPL (constant power load (CPL). There are 3 different loads connected to the buses through the SSCM: an induction machine, a power inverter, and a CPL.

On a dual-Xeon-based, 2.4 GHz, RT﷓LAB simulator with no I/O and using RT﷓LAB 7.0b4 software with the RedHawk Linux operating system, this model runs at sample time of 37 microseconds.

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