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Axial gap electrical machine

  • US 9,124,165 B2
  • Filed: 07/15/2013
  • Issued: 09/01/2015
  • Est. Priority Date: 11/14/2001
  • Status: Expired due to Fees
First Claim
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1. In an axial gap machine having a permanent magnet rotor and a stator comprising windings and working airgaps between said stators and rotors, such that movement of the magnets and their magnetic field relative to the windings in the stator generate an electromotive force across the windings and conversely such that when there is an electromotive force applied to the ends of the windings, the induced current in the windings and thereby in the magnetic field of the magnets in the rotor, create a force on the magnets of the rotor to cause its movement in a predetermined direction of rotation, said permanent magnet rotor further comprising a circular array of magnet structures comprising the magnet assembly, a means to cool the magnet assembly in the said permanent magnet rotor by arranging the magnet pole pairs around the periphery of the rotor, with radial gaps between them to allow airflow, said magnets being supporting on their outer radial periphery against centrifugal forces and minimal support elements between magnet assemblies to allow said airflow.

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