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Dual rotor magnet machine

  • US 4,782,257 A
  • Filed: 02/19/1987
  • Issued: 11/01/1988
  • Est. Priority Date: 10/22/1984
  • Status: Expired due to Fees
First Claim
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1. A rotary electrical generating machine including magnets and a power winding for supplying a magnetic flux pattern within a stator housing, said machine comprising, an assembly of a plurality of rotors fixed on a common shaft, said rotor assembly including at least a first rotor having a plurality of permanent magnets circumferentially disposed about the shaft and a second rotor defined by a solid rotor body having a plurality of longitudinally extending radial teeth, a common stator surrounding said first and second rotors including a common power winding surrounding each of said two rotors, and at least one excitation coil carried by the stator housing in confronting relation with a side of said second rotor to receive current as a function of the speed of rotation of said assembly of rotors for modifying the magnetic flux pattern within the stator housing to modify the speed of rotation of said rotor assembly in response to the current in said excitation coil.

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