Abstract
Due to simplicity, efficiency, and the ability to accommodate energy storage devices, DC distribution networks have been seen as an optimal alternative to AC distribution networks, especially aboard future electric ships. The emerging distribution DC system entails new control and management techniques. Therefore, an integrated DC power distribution network aboard an electric ship is selected as the case study in this paper. To meet the requirements of such a large-scale mobile power system, a multiport solid-state transformer (SST) based on silicon carbide (SiC) switches/MOSFETs is proposed. Thus, the system embodiment can significantly be reduced. Moreover, at the DC distribution level, a high penetration of renewable generation with energy storage is allowed and a six-phase asymmetrical induction machine (IM) can directly be integrated. Simulations have been conducted based on a 2 MW shipboard distribution network. The effects of the propulsion system dynamics on the SST are highlighted as well. Finally, a 2 kW lab-scale prototype has been implemented to validate the theoretical findings.
Highlights
Marine vessel electrification has been gaining interest due to the growing onboard power demand along with the restricted design rules
This paper presents a complete DC grid-based network for the shipboard electric power distribution system based on a hybrid AC/DC multiport solid-state transformer (SST) and a multiphasebased propulsion system
In order to validate the proposed SST-based shipboard electric system, detailed simulations have been conducted for three different scenarios using MATLAB/Simulink platform
Summary
Marine vessel electrification has been gaining interest due to the growing onboard power demand along with the restricted design rules. The traditional distribution systems commonly include the possibility of load harmonic injections into the local grid, which affects experience operational problems associated with conventional power transformers the that nearby [15]. SSTs provide voltage transformation between various levels through the employment of power electronic converters and a high-frequency isolation transformer The advantages of this technology over a traditional distribution transformer include no mineral oil, less weight, smaller size, and the mitigation of all power quality issues at the load side. This paper presents a complete DC grid-based network for the shipboard electric power distribution system based on a hybrid AC/DC multiport SST and a multiphasebased propulsion system. The integration of high-power six-phase winding electric motors employed in the propulsion system to the local DC grid and their effect on the SST-based microgrid are investigated. A small-scale 2 kW prototype system is constructed to corroborate the fidelity of the claimed system advantages
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
