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Thesis
Modeling and simulation of shipboard integrated power systems
Master of Science (M.S.), Drexel University
Apr 2011
DOI:
https://doi.org/10.17918/etd-3494
Abstract
The Integrated Power System (IPS) architecture forms the basis for designing current and future generations of naval power systems. This offers greater survivability and increased efficiency over mechanical drive systems. The Power Management System (PMS) for the IPS incorporates a supervisory controller that optimizes the delivery of power to vital loads in the event of system disruptions. Deriving optimal control strategies requires an adequate model of the IPS as well as software simulation capability to analyze the behavior of the model. This thesis presents a model for the IPS while accounting for its unique features, develops a software simulation tool for numerical simulation of dynamic power systems. Simulation results of the IPS are presented and the applicability of the model for derivation of optimal controllers is discussed. Dynamic models for individual components: generator, prime-mover, propulsion motor, vital and non vital static loads and energy storage device, are presented. The differential equations presenting the transient dynamics are combined with the algebraic equations of the network to form a differential-algebraic model. A software platform for dynamic simulation of power systems is developed in Mathematica. The behavior of the model is evaluated and validated by simulating system disturbances. For tractability in numerical computation of the PMS, the order of the differential model is reduced by Singular Perturbation method. Simulations are performed to show that the reduced order model and the full order model converge to the same steady state while the deviation of the two models is within acceptable margins during the transient period. The reduced order model may be used for derivation of optimal control policies by dynamic programming, and the reduction in size of the state space offers a substantial reduction in the number of computations.
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Details
- Title
- Modeling and simulation of shipboard integrated power systems
- Creators
- Sudipta Lahiri - DU
- Contributors
- Dagmar Niebur (Advisor) - Drexel University (1970-)
- Awarding Institution
- Drexel University
- Degree Awarded
- Master of Science (M.S.)
- Publisher
- Drexel University; Philadelphia, Pennsylvania
- Resource Type
- Thesis
- Language
- English
- Academic Unit
- College of Engineering (1970-2026); Electrical (and Computer) Engineering [Historical]; Drexel University
- Other Identifier
- 3494; 991014632171404721