Title

Investigating the Performance of a Variable Stiffness Magnetic Spring for Resonant Ocean Power Generation

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.

Description

©2019 IEEE

DOI

10.1109/ECCE.2019.8912306

Persistent Identifier

https://archives.pdx.edu/ds/psu/33265

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