A Review of DC Shipboard Microgrids: Part I: Power Architectures, Energy Storage and Power Converters

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Abstract

Integrated power systems are popular in the shipbuilding industry. DC shipboard microgrids (dc-SMGs) have many advantages compared with ac ones in terms of system efficiency, operation flexibility, component size, and fault protection performance. Being in the exploring stage, dc-SMGs have several potential configurations with different system architectures and voltage levels. In a dc-SMG, functional blocks integrated include power generation modules (PGMs), propulsion system, high power loads, and pulsed loads specifically in naval ships. In modern ships, the PGMs include not only generators and fuel cells but also energy storage systems (ESSs), which cooperate with generators to improve the overall efficiency and reliability. High power electric converters are vital interfaces between the functional blocks and the dc distribution system. Rectifiers for generators take the tasks of dc bus voltage regulation and power sharing. Inverters for propulsion motors are responsible for the motor drive in different operating conditions. Bidirectional dc/dc converters for ESSs are used to provide supply-demand balance and voltage fluctuation mitigation. This article makes a comprehensive review of power architecture, functional blocks including electrical machines and energy storage, as well as power converters in dc shipboard power systems.

Original languageEnglish
Article number9616422
JournalIEEE Transactions on Power Electronics
Volume37
Issue number5
Pages (from-to)5155-5172
Number of pages18
ISSN1941-0107
DOIs
Publication statusPublished - 2022

Keywords

  • Marine vehicles
  • Generators
  • Voltage control
  • Power system stability
  • Reliability
  • Stability criteria
  • Fuels
  • energy storage
  • power conversion
  • power generation
  • DC shipboard microgrid
  • power system configuration

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