A New Coupled-Inductor-Based Buck-Boost DC-DC Converter for PV Applications

A new buck-boost converter with coupled inductors is presented in this article. The converter benefits from low ripple input current, simple control (both power switches operate synchronously), common ground sharing between input and output ports, low-voltage stress across the power switches, positi...

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Bibliographic Details
Published in:IEEE transactions on power electronics 2022-01, Vol.37 (1), p.687-699
Main Authors: Yari, Keyvan, Mojallali, Hamed, Shahalami, Seyed Hamid
Format: Article
Language:English
Subjects:
Capacitors
Common ground sharing between input/output ports
continuous input current
Converters
Fuel cells
High-voltage techniques
Inductance
Inductors
Mathematical analysis
Mathematical model
Photovoltaic cells
quadratic voltage gain
solar power energy
Stress
Switches
Voltage gain
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Summary:A new buck-boost converter with coupled inductors is presented in this article. The converter benefits from low ripple input current, simple control (both power switches operate synchronously), common ground sharing between input and output ports, low-voltage stress across the power switches, positive output voltage, and quadratic voltage gain. Since the proposed converter has continuous input current, it is a proper choice for fuel cell (FC) and photovoltaic applications. Operating principles, mathematical calculation for steady-state operation, and small-signal modeling analysis are described in detail. Finally, an experimental 25-20-200 V prototype has been implemented to confirm all the mathematical derivation and aforementioned features of the proposed buck-boost converter.
ISSN:0885-8993
1941-0107
DOI:10.1109/TPEL.2021.3101905