  The Power Hardware-In-the-Loop (PHIL) technology provides a powerful tool for
testing scenarios where there is a high-power interchange, in which the
performance of field tests can be very complex or expensive. When performing
PHIL simulations of systems with a high number of components, such as
DC-distributed systems on a ship or aircraft, the use of switched or average
models of the converters can require the use of expensive commercial real-time
digital simulators (RTDS) reducing the advantages of these technology. This
paper is focused on the proposal of a reduced order model of converters to be
able to perform PHIL analysis of Dc-distributed systems using low resources of
the required real-time digital simulator. The paper validates that the proposed
reduced-order model is able to determine the stability on the Dc-distributed
system in comparison with more complex converter models. Moreover, a comparison
between both models regarding the required resources in the implementation in a
commercial RTDS platform is performed to validate the benefits of the proposed
model in performing PHIL analysis of large power distribution systems.
