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Bi-directional DC-DC converter with energy management and protection capabilities For LVDC grids
Dissertation (MEng (Electrical Engineering))--University of Pretoria, 2023.
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| Format: | Thesis |
| Language: | English |
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University of Pretoria
2024
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| _version_ | 1867613550392901632 |
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| access_status_str | Open Access |
| author2 | Gitau, Michael Njoroge |
| author_browse | Gitau, Michael Njoroge |
| author_facet | Gitau, Michael Njoroge |
| collection | Thesis |
| dc_rights_str_mv | © 2023 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. |
| description | Dissertation (MEng (Electrical Engineering))--University of Pretoria, 2023. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/96814 |
| institution | University of Pretoria (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:37:55.807Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2024 |
| publishDateRange | 2024 |
| publishDateSort | 2024 |
| publisher | University of Pretoria |
| publisherStr | University of Pretoria |
| record_format | dspace |
| source_str | UPSpace — University of Pretoria Institutional Repository |
| spelling | oai:repository.up.ac.za:2263/96814 Bi-directional DC-DC converter with energy management and protection capabilities For LVDC grids Gitau, Michael Njoroge u15209840@tuks.co.za Doma, Anesu Emmanuel UCTD Sustainable Development Goals (SDGs) Bidirectional converters Hybrid DC breakers Solid state DC Circuit breakers Impedance Source DC Circuit breakers LVDC grids Energy management Dissertation (MEng (Electrical Engineering))--University of Pretoria, 2023. The work outlines a framework for enhancing the efficacy of current LVDC microgrid protection techniques. Currently, the two most significant challenges are the detection and interruption of fault currents. The primary aim of a protection strategy is to maintain the dependability of a power system by selectively isolating the components that are responsible for the fault occurrence. Consequently, it is imperative to interrupt the fault current before it reaches the components' maximum ratings. A proposal has been put forth for the implementation of a bidirectional converter to verify the functionality of a "converter cascaded with an Impedance Source Circuit Breaker (ISCB)" system. Contemporary investigations on DC microgrids suggest that the converter and impedance source breaker integration is functional; however, these two pivotal components have been analyzed separately, with the presumption of effortless integration. The combination is expected to exhibit fault current interruption capabilities and function as an energy hub. The analysis and design of a converter operating in Average Current Mode control (ACM) and an ISCB are conducted as separate entities. This work presents a proposed methodology for validating protection features. The obtained simulated results provide confirmation of the successful interruption of the circuit and ripple reduction on the DC branch input current. Electrical, Electronic and Computer Engineering MEng (Electrical Engineering) Unrestricted Faculty of Engineering, Built Environment and Information Technology SDG-09: Industry, innovation and infrastructure 2024-07-05T06:59:42Z 2024-07-05T06:59:42Z 2024-09 2024-06 Dissertation * S2024 http://hdl.handle.net/2263/96814 DOI: https://doi.org/10.25403/UPresearchdata.26127583.v1 10.25403/UPresearchdata.26127583 en © 2023 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. application/pdf University of Pretoria |
| spellingShingle | UCTD Sustainable Development Goals (SDGs) Bidirectional converters Hybrid DC breakers Solid state DC Circuit breakers Impedance Source DC Circuit breakers LVDC grids Energy management Bi-directional DC-DC converter with energy management and protection capabilities For LVDC grids |
| title | Bi-directional DC-DC converter with energy management and protection capabilities For LVDC grids |
| title_full | Bi-directional DC-DC converter with energy management and protection capabilities For LVDC grids |
| title_fullStr | Bi-directional DC-DC converter with energy management and protection capabilities For LVDC grids |
| title_full_unstemmed | Bi-directional DC-DC converter with energy management and protection capabilities For LVDC grids |
| title_short | Bi-directional DC-DC converter with energy management and protection capabilities For LVDC grids |
| title_sort | bi directional dc dc converter with energy management and protection capabilities for lvdc grids |
| topic | UCTD Sustainable Development Goals (SDGs) Bidirectional converters Hybrid DC breakers Solid state DC Circuit breakers Impedance Source DC Circuit breakers LVDC grids Energy management |
| url | http://hdl.handle.net/2263/96814 |