Halbach array motor/generators: A novel generalized electric machine

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In August 1979, Halbach submitted a paper entitled ``Design of Permanent Multipole Magnets with Oriented Rare Earth Cobalt Material.`` In this paper, he presented a novel method of generating multipole magnetic fields using non-intuitive geometrical arrangements of permanent magnets. In subsequent publications, he further defined these concepts. Of particular interest to one of the authors (RFP) was the special magnet array that generated a uniform dipole field. In 1990 Post proposed the construction of an electric machine (a motor/generator) using a dipole field based on Klaus Halbach`s array of permanent magnets. He further proposed that such a system should be ... continued below

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20 p.

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Merritt, B.T.; Post, R.F.; Dreifuerst, G.R. & Bender, D.A. October 28, 1994.

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Description

In August 1979, Halbach submitted a paper entitled ``Design of Permanent Multipole Magnets with Oriented Rare Earth Cobalt Material.`` In this paper, he presented a novel method of generating multipole magnetic fields using non-intuitive geometrical arrangements of permanent magnets. In subsequent publications, he further defined these concepts. Of particular interest to one of the authors (RFP) was the special magnet array that generated a uniform dipole field. In 1990 Post proposed the construction of an electric machine (a motor/generator) using a dipole field based on Klaus Halbach`s array of permanent magnets. He further proposed that such a system should be employed as an integral part of ``an electromechanical battery`` (EMB), i.e., a modular flywheel system to be used as a device for storing electrical energy, as an alternative to the electrochemical storage battery. This paper reviews Halbach`s theory for the generation of a dipole field using an array of permanent magnet bars, presents a simple analysis of a family of novel ``ironless`` electric machines designed using the dipole Halbach array, and describes the results obtained when they were tested in the laboratory.

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20 p.

Notes

OSTI as DE95008373

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  • Contribution for Halbach Festschrift, Berkeley, CA (United States), 3 Feb 1995

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  • Other: DE95008373
  • Report No.: UCRL-JC--119050
  • Report No.: CONF-950261--2
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 32793
  • Archival Resource Key: ark:/67531/metadc682980

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  • October 28, 1994

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  • July 25, 2015, 2:20 a.m.

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  • Feb. 16, 2016, 7:27 p.m.

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Merritt, B.T.; Post, R.F.; Dreifuerst, G.R. & Bender, D.A. Halbach array motor/generators: A novel generalized electric machine, article, October 28, 1994; California. (digital.library.unt.edu/ark:/67531/metadc682980/: accessed September 19, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.