A Current-to-Voltage DC-DC Converter for Powering Backbone Devices of Scientific Cabled Seafloor Observatories

Jiayu Zhu and Feng Lyu
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Jiayu Zhu: State Key Laboratory of Marine Geology, Tongji University, Shanghai 200092, China
Feng Lyu: State Key Laboratory of Marine Geology, Tongji University, Shanghai 200092, China

Energies, 2019, vol. 12, issue 12, 1-13

Abstract: In scientific cabled seafloor observatories, branching units and optical repeaters are essential backbone devices, in which zener diodes are commonly used in their power supply circuits. However, the low efficiency of zener-diode-based power feeding modules under large currents makes for a significant threat to the long-term reliability of backbone devices. In this paper, a novel full-bridge DC-DC converter with a duty-cycle-overlap control (DCOC) strategy is proposed to achieve high-efficiency current-to-voltage conversion. The circuit design of the converter and the principle of the DCOC strategy are analyzed. A prototype of the converter is implemented to demonstrate the feasibility of the proposed power feeding approach for large-scale cabled seafloor observatories.

Keywords: cabled seafloor observatories; power supply; current-to-voltage; DC-DC converters; duty-cycle-overlap control (DCOC) (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
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