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Title: Magnetic gearbox with flux concentration halbach rotors

Abstract

This application relates to translating mechanical energy from a low-speed rotor to a high-speed rotor or vice versa in a magnetic gearbox. More specifically, this application discloses various embodiments of a coaxial magnetic gearbox with flux concentration Halbach rotors. In certain implementations, the device further comprises a circular back iron (or other ferromagnetic material) disposed concentrically along the axis of the cylindrical magnetic gearing device. In such embodiments, this flux concentration back iron (or ferromagnetic pole) improves the torque density and can also help retain the magnets in place.

Inventors:
Issue Date:
Research Org.:
Portland State Univ., OR (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1840481
Patent Number(s):
11128209
Application Number:
16/494,634
Assignee:
Portland State University (Portland, OR)
Patent Classifications (CPCs):
H - ELECTRICITY H02 - GENERATION H02K - DYNAMO-ELECTRIC MACHINES
DOE Contract Number:  
EE0006801
Resource Type:
Patent
Resource Relation:
Patent File Date: 03/16/2018
Country of Publication:
United States
Language:
English

Citation Formats

Bird, Jonathan. Magnetic gearbox with flux concentration halbach rotors. United States: N. p., 2021. Web.
Bird, Jonathan. Magnetic gearbox with flux concentration halbach rotors. United States.
Bird, Jonathan. Tue . "Magnetic gearbox with flux concentration halbach rotors". United States. https://www.osti.gov/servlets/purl/1840481.
@article{osti_1840481,
title = {Magnetic gearbox with flux concentration halbach rotors},
author = {Bird, Jonathan},
abstractNote = {This application relates to translating mechanical energy from a low-speed rotor to a high-speed rotor or vice versa in a magnetic gearbox. More specifically, this application discloses various embodiments of a coaxial magnetic gearbox with flux concentration Halbach rotors. In certain implementations, the device further comprises a circular back iron (or other ferromagnetic material) disposed concentrically along the axis of the cylindrical magnetic gearing device. In such embodiments, this flux concentration back iron (or ferromagnetic pole) improves the torque density and can also help retain the magnets in place.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2021},
month = {9}
}

Works referenced in this record:

Magnetic coupling using halbach type magnet array
patent-application, April 2004


Flat rotary electric machine
patent-application, June 2003


Variable magnetic gears
patent, April 2015


Power Transmission Apparatus
patent-application, March 2015


Multiple stator, single shaft electric machine
patent, July 1998


Flux focusing Magnetic Gear Assembly Using Ferrite Magnets or the Like
patent-application, January 2017