PV integrated shipboard MVDC grid with reduced bus voltage ripple
Abstract
Integration of renewable energy sources for power generation is a proven solution to reduce the increasing greenhouse gas emissions towards decarbonisation onboard ships. Also, it is easy to integrate a variety of energy sources in an all-electric ship under medium voltage direct current distribution system. In such distribution system, high frequency switching power converters are greatly involved on the source and the load sides, which are massive source of harmonics. In this paper, a grid connected photovoltaic module is designed and paralleled with the generator, as a step towards reducing greenhouse gas emissions. Additionally, to take care of the voltage ripple and noise created by the high frequency switching power converters in the system, a shunt direct current electric spring with a control strategy is incorporated. The proposed system eliminates the use of heavy passive filters, commonly used at the rectifier end. MATLAB/Simulink results substantiate that the increased voltage ripple with the inclusion of energy sources and loads, that goes around 10.91% under fully loaded condition, is reduced to 1.27% with the shunt direct current electric spring, hence well within the IEEE 1709 std., which is less than 5%.
Additional Files
Published
Issue
Section
License
Copyright (c) 2024 Engineering Review
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Engineering review uses the Creative Commons Attribution-NonCommercial-NoDerivatives (CC-BY-NC-ND) 4.0 International License, which governs the use, publishing and distribution of articles by authors, publishers and the wider general public.
The authors are allowed to post a digital file of the published article, or the link to the published article (Enginering Review web page) may be made publicly available on websites or repositories, such as the Author’s personal website, preprint servers, university networks or primary employer’s institutional websites, third party institutional or subject-based repositories, and conference websites that feature presentations by the Author(s) based on the published article, under the condition that the article is posted in its unaltered Engineering Review form, exclusively for non-commercial purposes.
The journal Engineering Review’s publishing procedure is performed in accordance with the publishing ethics statements, defined within the Publishing Ethics Resource Kit. The Ethics statement is available in the document Ethics Policies.
