Reduced Order Muiti-Domain Modeling of Shipboard Systems for Exergy-Based Control Investigations

摘要

The US Navy is moving towards more electric ships with ongoing development of high-powered radars and electronic warfare systems, directed energy and electromagnetic weapons. One of the key enablers for these systems is improving the ability to control the power and energy flows aboard existing and future warships. This includes electrical, chemical and thermal energy flows. Most advanced control efforts focus on a single shipboard system (i.e. electrical or thermal). This paper is investigating the ability to leverage the Second Law of Thermodynamics by developing controls which minimize Exergy destruction across domains. An Exergy-based approach is developed to allow improved control design. The development and validation of reduced order dynamic models for shipboard electrical, thermal and missions systems is also described. These models have been developed with additional exergy terms so that they can be utilized to conduct optimization with exergy destruction based objective functions. Some of the components do not yet exist in hardware, therefore the reduced order models are validated against well-known detailed dynamic models.