Design and Analysis of a High-Gain Step-Up/Down Modular DC–DC Converter with Continuous Input Current and Decreased Voltage Stress on Power Switches and Switched-Capacitors

Maysam Abbasi, Ehsan Abbasi, Li Li and Behrouz Tousi
Additional contact information
Maysam Abbasi: School of Electrical and Data Engineering, University of Technology Sydney, Sydney, NSW 2007, Australia
Ehsan Abbasi: Department of Electrical Engineering, University of Tabriz, Tabriz 5166616471, Iran
Li Li: School of Electrical and Data Engineering, University of Technology Sydney, Sydney, NSW 2007, Australia
Behrouz Tousi: Department of Electrical Engineering, Engineering Faculty, Urmia University, Urmia 57153, Iran

Sustainability, 2021, vol. 13, issue 9, 1-19

Abstract: Due to concerns, such as global warming and depletion of fossil fuels, countries are forced to integrate energy storage devices (ESSs) and renewable energy sources (RESs), such as photovoltaic (PV) systems, wind turbines and fuel cells, into their power networks. Here, a new high gain DC–DC converter with step-up/down ability is proposed for modern applications. Since this converter provides high variable voltage gain, it can be employed for output voltage regulation purposes in RESs such as solar panels. Additionally, this converter provides a remarkable reduction in voltage stress on the switched capacitors and power switches. Due to its modular structure obtained by employing switched-capacitors (SCs), it is possible for this topology to gain a very high voltage conversion ratio using low duty-cycles produced by a simple and straightforward control system. To be specific, the more the number of SC cells increase, the more the output voltage increases. The proposed converter has a continuous input current allowing to extract the maximum power from RESs like PV panels. It should be noted that the application of this converter is not limited to the aforementioned ones since it can be used in various applications needing high voltage gains such as generating the desired voltage level in high voltage direct current (HVDC) systems especially their transmission lines. For validating the performance of the proposed structure, comprehensive comparisons and experimental results are presented.

Keywords: DC–DC converter; step-up/down; high voltage gain; low voltage stress on components; renewable energy source applications; HVDC system; microgrid application (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
https://www.mdpi.com/2071-1050/13/9/5243/pdf (application/pdf)
https://www.mdpi.com/2071-1050/13/9/5243/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jsusta:v:13:y:2021:i:9:p:5243-:d:550316

Access Statistics for this article

Sustainability is currently edited by Ms. Alexandra Wu

More articles in Sustainability from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().