In this paper, a notional destroyer-class all electric ship system, particularly its dynamic behavior during the crashback maneuver, is studied via real time Power Hardware-in-the- Loop (PHIL) experiments. By replacing one of the two propulsion systems of the ship with a downscaled hardware motor-dynamometer set, the PHIL simulations are performed at two different power levels (first at 16 kW and then at 2.5 MW). It is shown through the simulation results that although the two propulsion systems are implemented in substantially different ways (i.e., one in hardware and the other in simulation) their dynamic responses during the crashback match very well. This also demonstrates the feasibility and reliability of using the PHIL simulation as an effective tool for testing the prototypes of novel apparatuses under the most realistic scenarios.
W. Ren, M. Steurer, S. Woodruff, M. Andrus, Presented at the ASNE Advanced Naval Propulsion Symposium, Arlington, VA, October 30-31, 2006
KEYWORDS: Real-time simulation, crashback, all-electric ship, hardware-in-the-loop