Original scientific paper
https://doi.org/10.1080/00051144.2023.2284024
A partly isolated three-port converters with an improved power flow for integrating PV and energy storage into a DC bus
Sundar Ramakrishnana
; Department of Bio-Medical Engineering, Dr. N.G.P Institute of Technology, Coimbatore, India
*
Porkumaran Karantharajb
; Sri Sairam Engineering College, Chennai, India
* Corresponding author.
Abstract
This study proposes an integrated design of isolated three-port high-gain DC-DC converters
to link PV (photovoltaic) and batteries for a standalone system. Three switches are required to
process power between inputs and outputs while maintaining minimal circulating current flow
between ports and permitting bidirectional power flow at the battery port. Furthermore, owing
to the leakage inductance of the transformers, ZVS (zero-voltage switching) of all the switches
may be done using a mutual active clamp circuit throughout the whole operating range. As a
result, the converter has fewer components and can still operate in all power conversion modes.
Because the bulk of renewable energy sources have a low voltage level, the converter maintains a
high voltage gain. An effective and reasonably priced converter is the outcome of these qualities.
Using MATLAB simulation, the suggested converter’s detailed operating principles, characteristics, design concerns and control method are examined. In order to confirm the viability and
efficacy of the suggested solution, an experimental prototype is constructed and tested.
Keywords
PV (photovoltaic); ZVS (zero-voltage switching); DISO (double-input-singleoutput); SISO (single-input-single-output); SIDO (single-input-double-output)
Hrčak ID:
322953
URI
Publication date:
5.12.2023.
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