Modeling and simulation of shipboard nonlinear dynamic loads using Volterra kernels

Abstract

Integration of nonlinear dynamic loads has become a significant aspect of designing new ships with integrated power systems. System level simulation is one tool for improving performance in prototyping laboratories and ship yards but requires accurate models of these loads for high performance ship design. This paper utilizes the Volterra Series for nonlinear modeling and discusses methods for creating models, through Volterra kernel measurement, from time domain simulations or hardware prototypes. Design of a converter to realize the required input voltage exciter for model development of hardware prototypes is described. Simulation results of a traditional DC-DC boost converter load are presented along with a brief discussion on scaling methods for increased power levels.