Electromagnetic Lead Screw for Potential Wave Energy Application

This paper presents a new type electromagnetic lead screw (EMLS) intended for wave energy application. Similar to the mechanical lead screw, this electromagnetic version can transfer slow linear motion to high-rotational motion, offering gearing effects. Compared with the existing pure magnetic lead...

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Bibliographic Details
Published inIEEE transactions on magnetics Vol. 50; no. 11; pp. 1 - 4
Main Authors Lu, Kaiyuan, Wu, Weimin
Format Journal Article
LanguageEnglish
Published New York IEEE 01.11.2014
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Analytical models
Coils
Fasteners
Force
Generators
Magnetism
Rotors
Solid modeling
wave energy
Electromagnetic lead screw (EMLS)
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Summary:This paper presents a new type electromagnetic lead screw (EMLS) intended for wave energy application. Similar to the mechanical lead screw, this electromagnetic version can transfer slow linear motion to high-rotational motion, offering gearing effects. Compared with the existing pure magnetic lead screw (MLS) employing permanent magnets only, the new EMLS proposed uses dc current to provide the required helical-shape magnetic field, offering a much simpler, robust structure compared with the MLS. The working principle and the performances of this EMLS are analyzed in this paper. Comparison with PM-type lead screw is given. In addition to this, the theoretical analysis to support the use of a 2-D finite element model to analyze the 3-D magnetic-type lead screw is given, which has not been well covered in the existing literature.
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2014.2325611