Magnet support and retention system for hybrid rotors
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United States of America Patent
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Mar 20, 2012
Grant Date -
Feb 5, 2009
app pub date -
Aug 2, 2007
filing date -
Aug 2, 2007
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Disclosed is a rotor assembly for an electric machine includes a rotor core. The rotor core has at least one magnet slot with an increasing slot width as radial distance from a rotor shaft increases, and at least one slot lip extending at least partially across the slot width. The rotor assembly also includes at least one permanent magnet located in at least one magnet slot, the magnet having an increasing magnet width as radial distance from a rotor shaft increases. The rotor assembly further includes a retainer disposed in the magnet slot radially between the magnet and the at least one slot lip. Also disclosed is a method of securing at least one permanent magnet in a rotor assembly of an electric machine.
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