Abstract/Details

Design and Implementation of Multi-Port Dc-Dc Converters for Electrical Power Systems

Alhani, Emad.   Cardiff University (United Kingdom) ProQuest Dissertations & Theses,  2023. 30770564.

Abstract (summary)

The thesis proposes developing, analysing, and verifying these DC-DC converters to improve the current state-of-the-art topology. Four new DC-DC converters for applications like light emitting diode, lighting microgrids DC, PV applications, and electric vehicles are as follows. In this study, the two-input converter is presented. The two-input converter that has been proposed serves as the interface between the two input sources and load. Using two switches and two diodes, the proposed converter minimises switching losses and contains eight components in total, making it compact and low volume. As a result, the highest average efficiency is 92.5%, and the lowest is 89.6%. In this research, the new three-port converter that has been proposed serves as the interface between the input source, a battery, and a load. In addition, the converter is suitable for use in standalone systems or satellite applications. A low-volume converter is designed with three switches and two diodes, thereby minimizing switching losses and ten components in total. Regarding efficiency, the highest average is 92.5%, and the lowest is 90.9%. Also, this study proposes a single-switch high-step-up converter for LED drivers and PV applications. A further benefit of the proposed converter over conventional classical converters is that it utilises only one active switch. These results align with simulation results, and its gain is 6.8 times greater than classical converters. Furthermore, stress across switches and diodes is smaller than the output voltage, approximately 50%. Semiconductor losses were limited with a low duty cycle of 0.7. This makes the highest average efficiency 95% and the lowest 93.9%. The new four-port converter is presented for applications such as microgrid structures and electric vehicles. As part of the integrated converter, two or three converters are combined by sharing some components, such as switches, inductors, and capacitors, to form a single integrated converter. As a result of the four-port converter proposed, battery power can be managed, and output voltage can be regulated simultaneously.

Indexing (details)


Subject
Electric vehicles;
Efficiency
Identifier / keyword
883223
URL
https://orca.cardiff.ac.uk/id/eprint/159608/
Title
Design and Implementation of Multi-Port Dc-Dc Converters for Electrical Power Systems
Author
Alhani, Emad
Publication year
2023
Degree date
2023
School code
0428
Source
DAI-C 85/4(E), Dissertation Abstracts International
University/institution
Cardiff University (United Kingdom)
University location
Wales
Degree
Ph.D.
Source type
Dissertation or Thesis
Language
English
Document type
Dissertation/Thesis
Note
Bibliographic data provided by EThOS, the British Library’s UK thesis service. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.883223
Dissertation/thesis number
30770564
ProQuest document ID
2873022836
Copyright
Database copyright ProQuest LLC; ProQuest does not claim copyright in the individual underlying works.
Document URL
https://www.proquest.com/docview/2873022836/abstract/