Investigating the Performance of a Variable Stiffness Magnetic Spring for Resonant Ocean Power Generation
Sponsor
This material is based upon work partially supported by the Department of Energy’s Office of Energy Efficiency and Re newable Energy (EERE) under the Water Power Technolo gies Office award number DE-EE0001837.
Published In
2019 IEEE Energy Conversion Congress and Exposition (ECCE)
Document Type
Citation
Publication Date
11-2019
Abstract
This paper presents a new type of variable stiffness magnetic spring which can have a highly linear translational force characteristic. The variable stiffness is achieved through the rotation of a central magnet. Both positive and negative spring constants can be created. Using an analytic-based field analysis modelling technique the operating principle and linearity characteristics of the adjustable magnetic spring are studied. The use of a magnetic spring with an adjustable negative spring constant could enable an ocean generator to continuously operate in a resonant state thereby greatly increasing its power generation capability. The presented variable stiffness spring could also be useful in other energy harvesting and robotic actuator applications.
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DOI
10.1109/ECCE.2019.8912306
Persistent Identifier
https://archives.pdx.edu/ds/psu/33265
Citation Details
M. E. Hossain and J. Z. Bird, "Investigating the Performance of a Variable Stiffness Magnetic Spring for Resonant Ocean Power Generation," 2019 IEEE Energy Conversion Congress and Exposition (ECCE), Baltimore, MD, USA, 2019, pp. 5002-5008, doi: 10.1109/ECCE.2019.8912306.
Description
©2019 IEEE