Shipboard DC Microgrids Part I

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Shipboard DC Microgrids Part I

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Instructors: Josep M. Guerrero, Aalborg University, Denmark, Rober Cuzner, University of Wisconsin - Milwaukee, US, Giorgio Sulligoi, Trieste University, Italy, Shantha Gamini, Univ. of Tasmania, Australia Under normal operating conditions at sea, the ship electrical system can be considered as a typical isolated microgrid. When the ship docs to the seaport and is powered with shore power it makes a grid connected microgrid. Thus, ship microgrids may resemble some analogies to commercial microgrids with similar issues and opportunities. Moreover, with the ever growing demands for emission reduction and fuel efficiency improvement, sustainable energy sources are becoming an integral part of marine electrical power systems. In addition, the intermittency and slow dynamics of these sources together with the presence of pulse loads, such as radar, make energy storage inevitable in future shipboard power systems to achieve faster transient characteristics. These sources and energy storage elements are predominantly dc and thus onboard dc distribution is often used for integration and thereby improve the energy conversion efficiency. Therefore, future shipboard power systems are predicted to be predominantly dc microgrids. This tutorial provides an overview of power system architectures of present and future ship microgrids, various sources, loads and their characteristics, control technologies and optimization methods in both islanded and grid connected operations. Protection coordination, multi-zonal architectures and fault isolation in future shipboard dc microgrids are also discussed in detail as the challenges in realization of future MVDC shipboard microgrids. The tutorial session is recommended for audience from both industry and academia with an interest in ship microgrids. In general, any participant who is interested in learning about the latest trends in this area is welcomed.
Instructors: Josep M. Guerrero, Aalborg University, Denmark, Rober Cuzner, University of Wisconsin - Milwaukee, US, Giorgio Sulligoi, Trieste University, Italy, Shantha Gamini, Univ. of Tasmania, Australia Under normal operating conditions at sea, the ship electrical system can be considered as a typical isolated microgrid. When the ship docs to the seaport and is powered with shore power it makes a grid connected microgrid. Thus, ship microgrids may resemble some analogies to commercial microgrids with similar issues and opportunities. Moreover, with the ever growing demands for emission reduction and fuel efficiency improvement, sustainable energy sources are becoming an integral part of marine electrical power systems. In addition, the intermittency and slow dynamics of these sources together with the presence of pulse loads, such as radar, make energy storage inevitable in future shipboard power systems to achieve faster transient characteristics. These sources and energy storage elements are predominantly dc and thus onboard dc distribution is often used for integration and thereby improve the energy conversion efficiency. Therefore, future shipboard power systems are predicted to be predominantly dc microgrids. This tutorial provides an overview of power system architectures of present and future ship microgrids, various sources, loads and their characteristics, control technologies and optimization methods in both islanded and grid connected operations. Protection coordination, multi-zonal architectures and fault isolation in future shipboard dc microgrids are also discussed in detail as the challenges in realization of future MVDC shipboard microgrids. The tutorial session is recommended for audience from both industry and academia with an interest in ship microgrids. In general, any participant who is interested in learning about the latest trends in this area is welcomed.