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CLC number: TM131.4+1

On-line Access: 2010-09-30

Received: 2009-11-17

Revision Accepted: 2010-06-02

Crosschecked: 2010-09-03

Cited: 17

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Journal of Zhejiang University SCIENCE C 2010 Vol.11 No.10 P.824-834


Design considerations for electromagnetic couplers in contactless power transmission systems for deep-sea applications

Author(s):  Ze-song Li, De-jun Li, Lin Lin, Ying Chen

Affiliation(s):  State Key Lab of Fluid Power Transmission and Control, Zhejiang University, Hangzhou 310027, China

Corresponding email(s):   zesonlee@gmail.com, li_dejun@zju.edu.cn, ychen@zju.edu.cn

Key Words:  Contactless power transmission (CLPT), EM coupler, Deep sea, Gap effects

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Ze-song Li, De-jun Li, Lin Lin, Ying Chen. Design considerations for electromagnetic couplers in contactless power transmission systems for deep-sea applications[J]. Journal of Zhejiang University Science C, 2010, 11(10): 824-834.

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%T Design considerations for electromagnetic couplers in contactless power transmission systems for deep-sea applications
%A Ze-song Li
%A De-jun Li
%A Lin Lin
%A Ying Chen
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%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.C0910711

T1 - Design considerations for electromagnetic couplers in contactless power transmission systems for deep-sea applications
A1 - Ze-song Li
A1 - De-jun Li
A1 - Lin Lin
A1 - Ying Chen
J0 - Journal of Zhejiang University Science C
VL - 11
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SP - 824
EP - 834
%@ 1869-1951
Y1 - 2010
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.C0910711

In underwater applications of contactless power transmission (CLPT) systems, high pressure and noncoaxial operations will change the parameters of electromagnetic (EM) couplers. As a result, the system will divert from its optimum performance. Using a reluctance modeling method, we investigated the gap effects on the EM coupler in deep-sea environment. Calculations and measurements were performed to analyze the influence of high pressure and noncoaxial alignments on the coupler. It was shown that it is useful to set a relatively large gap between cores to reduce the influence of pressure. Experiments were carried out to verify the transferring capacity of the designed coupler and system for a fixed frequency. The results showed that an EM coupler with a large gap can serve a stable and efficient power transmission for the CLPT system. The designed system can transfer more than 400 W electrical power with a 2-mm gap in the EM coupler, and the efficiency was up to 90% coaxially and 87% non-coaxially in 40 MPa salt water. Finally, a mechanical layout of a 400 W EM coupler for the underwater application in 4000-m deep sea was proposed.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article


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