Triple-Mode Current-Fed Resonant DC-DC Converter for Wide Input Voltage Range with Extended Asymmetric Modulation

This paper proposes a triple-mode current-fed resonant converter operating over a wide input voltage range for renewable energy systems. First, when the input voltage is lower than the nominal voltage, the proposed converter operates in a high boost mode. Next, when the input voltage is equal to the...

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Bibliographic Details
Main Authors: Kim, Sangoh, Cho, Junseong, Kim, Byeongju, Song, Youngjoon, Han, Byeongcheol
Format: Conference Proceeding
Language:English
Subjects:
active clamp circuit
Asia
asymmetric modulation
DC-DC power converters
input-current doubler
Modulation
output voltage doubler
Rectifiers
Renewable energy
Renewable energy sources
Switches
triple-mode operation
Voltage
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Summary:This paper proposes a triple-mode current-fed resonant converter operating over a wide input voltage range for renewable energy systems. First, when the input voltage is lower than the nominal voltage, the proposed converter operates in a high boost mode. Next, when the input voltage is equal to the nominal voltage, it operates in a nominal boost mode. Last, when the input voltage is higher than the nominal voltage, it operates in a low boost mode. In contrast to conventional symmetric modulation techniques, this converter uses an extended asymmetric modulation technique that can lower hard switching turn-on loss. Accordingly, the proposed converter achieves high step-up ratio and power density over a wide input voltage range. A 400-W prototype is constructed and experimental tests were carried out to demonstrate the performance of the proposed converter.
ISSN:2150-6086
DOI:10.23919/ICPE2023-ECCEAsia54778.2023.10213713