New way of mounting magnets in permanent-magnet, electronically commutated, brushless dc motors. Magnets wedge shaped, tapering toward center of rotor. Oppositely tapered pole pieces, electron-beam welded to rotor hub, retain magnets against centrifugal force generated by spinning rotor. To avoid excessively long electron-beam welds, pole pieces assembled in segments rather than single long bars.
Dovetail Rotor Construction For Permanent-Magnet Motors
NASA Tech Briefs ; 12 , 4
1988-04-01
Sonstige
Keine Angabe
Englisch
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