Magnetic gearbox with flux concentration halbach rotors

Bird, Jonathan

Title: Magnetic gearbox with flux concentration halbach rotors

Patent · Tue Sep 21 00:00:00 EDT 2021

OSTI ID:1840481

Bird, Jonathan

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.

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Research Organization:: Portland State Univ., OR (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: EE0006801

Assignee:: Portland State University (Portland, OR)

Patent Number(s):: 11,128,209

Application Number:: 16/494,634

OSTI ID:: 1840481

Resource Relation:: Patent File Date: 03/16/2018

Country of Publication:: United States

Language:: English

References (8)

Flux focusing magnetic gear assembly using ferrite magnets or the like Bird, Jonathan https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/9641059 US Patent Document 9,641,059	patent	May 2017
Magnetic coupling using halbach type magnet array Gery, Jean-Marc https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20040066107 US Patent Application 10/263081; 20040066107	patent-application	April 2004
Flux focusing magnetic gear assembly using ferrite magnets or the like Bird, Jonathan https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/9559577 US Patent Document 9,559,577	patent	January 2017
Flat rotary electric machine Kusase, Shin https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20030102764 US Patent Application 10/295891; 20030102764	patent-application	June 2003
Variable magnetic gears Atallah, Kais; Rens, Jan Jozef https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/9013081 US Patent Document 9,013,081	patent	April 2015
Power Transmission Apparatus Tonari, Tatsuya; Kusase, Shin; Katou, Hidenori https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20150075886 US Patent Application 14/491739; 20150075886	patent-application	March 2015
Multiple stator, single shaft electric machine Dade, Thomas B.; Garis, Jr., Chester A. https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5783893 US Patent Document 5,783,893	patent	July 1998
Flux focusing Magnetic Gear Assembly Using Ferrite Magnets or the Like Bird, Jonathan https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20170005560 US Patent Application 15/265196; 20170005560	patent-application	January 2017

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