Full Text:  <6615>

Summary:  <1229>

CLC number: TP271

On-line Access: 2024-08-27

Received: 2023-10-17

Revision Accepted: 2024-05-08

Crosschecked: 2021-12-09

Cited: 0

Clicked: 4424

Citations:  Bibtex RefMan EndNote GB/T7714

 ORCID:

Yu-jia Zang

https://orcid.org/0000-0002-2712-9854

Yan-hu Chen

https://orcid.org/0000-0002-5020-7355

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Article info.
Open peer comments

Frontiers of Information Technology & Electronic Engineering 

Accepted manuscript available online (unedited version)


A stepless-power-reconfigurable converter for a constant current underwater observatory


Author(s):  Yujia Zang, Yanhu Chen, Canjun Yang, Haoyu Zhang, Zhiyong Duan, Gul Muhammad

Affiliation(s):  State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou 310027, China; more

Corresponding email(s):  yanhuchen@zju.edu.cn

Key Words:  Constant current to constant voltage (CC/CV) conversion, Shunt regulator, Stepless power configuration, Underwater observatory


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Abstract: 
The conversion from constant current (CC) to constant voltage (CV) is one of the key technologies of CC underwater observatory systems. A shunt regulator with high stability and high reliability is usually used. Applications, however, are limited by high heat dissipation and low efficiency. In this paper, with an improved shunt regulation method, a novel concept of stepless power reconfiguration (SPR) for the CC/CV module is proposed. In cases with stable or slowly changing load, two modes of CC/CV conversion are proposed to reduce unnecessary power loss of the shunt regulator while being able to retain any operator-preset power margin in the system: (1) the manual SPR (MSPR) method based on single-loop control method; (2) the automatic SPR (ASPR) method based on inner-outer loop control method. The efficiency of the system is analyzed. How to select some key parameters of the system is discussed. Experimental results show that MSPR and ASPR are both effective and practical methods to reduce heat dissipation and improve the efficiency of the CC/CV module, while the high stability of the shunt regulator remains.

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