Journal ArticleDOI
Modeling and Simulation of All-Electric Ships With Low-Voltage DC Hybrid Power Systems
Bijan Zahedi,Lars Norum +1 more
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TLDR
In this article, a unified model for bidirectional converters is proposed to avoid transitions between two separate models, and a simulation platform using the derived models is developed for the system-level analysis of hybrid electric ships.Abstract:
DC hybrid power systems are of interest for future low emission, fuel-efficient vessels. In spite of the advantages they offer onboard a ship, they result in a complex, interconnected system, which requires effective analysis tools to enable a full realization of the advantages. Modeling and simulation are essential tools to facilitate design, analysis, and optimization of the system. This paper reviews modeling of hybrid electric ship components including mechanical and electrical elements. Power electronic converters are modeled by nonlinear averaging methods to suit system-level studies. A unified model for bidirectional converters is proposed to avoid transitions between two separate models. A simulation platform using the derived models is developed for the system-level analysis of hybrid electric ships. Simulation results of power sharing among two diesel generators, a fuel cell module, and an energy storage system are presented for three modes of operation.read more
Citations
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Journal ArticleDOI
Design and control of hybrid power and propulsion systems for smart ships: A review of developments
TL;DR: In this paper, the authors classified ship propulsion topologies into combustion, electrochemical, stored and hybrid power supply, and analyzed which control strategies can improve performance of hybrid systems for future smart and autonomous ships and concluded that a combination of torque, angle of attack, and Model Predictive Control with dynamic settings could improve performance.
Journal ArticleDOI
Next-Generation Shipboard DC Power System: Introduction Smart Grid and dc Microgrid Technologies into Maritime Electrical Netowrks
TL;DR: In this article, a series of advanced methods in control, management, and objective-oriented optimization that would establish the technical interface enabling future applications in multiple industrial areas, such as smart buildings, electric vehicles, aerospace/aircraft power systems, and maritime power systems.
Journal ArticleDOI
In Situ Diagnostics and Prognostics of Solder Fatigue in IGBT Modules for Electric Vehicle Drives
TL;DR: In this paper, an in situ diagnostic and prognostic (D&P) technology was proposed to monitor the health condition of insulated gate bipolar transistors (IGBTs) used in EVs with a focus on the IGBTs' solder layer fatigue.
Journal ArticleDOI
Optimized efficiency of all-electric ships by dc hybrid power systems
TL;DR: In this article, an optimization algorithm is proposed to minimize fuel consumption under various loading conditions, and an online optimization strategy for fuel consumption is implemented to evaluate potential fuel saving provided by a shipboard dc hybrid power system.
Journal ArticleDOI
Hierarchical Control Design for a Shipboard Power System With DC Distribution and Energy Storage Aboard Future More-Electric Ships
TL;DR: A novel inverse-droop control method is proposed, in which the power sharing is according to the source characteristic, instead of their power rating, for enabling a hybrid ESS and its autonomous operation.
References
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Book
Fundamentals of Power Electronics
TL;DR: Converters in Equilibrium, Steady-State Equivalent Circuit Modeling, Losses, and Efficiency, and Power and Harmonics in Nonsinusoidal Systems.
BookDOI
Handbook of Marine Craft Hydrodynamics and Motion Control: Fossen/Handbook of Marine Craft Hydrodynamics and Motion Control
TL;DR: In this article, the authors present a survey of the latest tools for analysis and design of advanced guidance, navigation and control systems and present new material on underwater vehicles and surface vessels.
Journal ArticleDOI
Generalized averaging method for power conversion circuits
TL;DR: In this paper, a more general averaging procedure that encompasses state-space averaging and that is potentially applicable to a much broader class of circuits and systems is presented, including resonant type converters.
Journal ArticleDOI
Energy management of fuel cell/battery/supercapacitor hybrid power source for vehicle applications
TL;DR: In this paper, the authors proposed a perfect energy source supplied by a polymer electrolyte membrane fuel cell (PEMFC) as a main power source and storage devices: battery and supercapacitor, for modern distributed generation system, particularly for future fuel cell vehicle applications.
Journal ArticleDOI
Distribution Voltage Control for DC Microgrids Using Fuzzy Control and Gain-Scheduling Technique
TL;DR: In this paper, a low-voltage bipolar-type dc microgrid with two energy storage units and a dc/dc converter was proposed to achieve both power sharing and energy management.