High power electrical machinery

Details High power electrical machinery High power electrical machinery

H - Electricity

02

K

H02K 21/36 (2006.01) H02K 31/02 (2006.01)

Patent

CA 2059579

An electrical machine having a stator formed from a pair of cup-shaped permanent magnets symmetrically disposed on opposite sides of a conductive, disk-shaped rotor. The magnets are polarized such that a portion of their external magnetic flux passes in one direction through a short peripheral gap formed by the magnets in which the periphery of the rotor is disposed. The remainder of the external magnetic flux substantially passes in the opposite direction through a cavity defined by the inner volume of the cup-shaped magnets. The inner portion of the disk-shaped rotor is disposed in this cavity. One embodiment of the invention implements the cup-shaped magnets with modified "magic spheres" mounted on either side of the conductive disk-shaped rotor. Other embodiments use a magnetic plate on one side of the disk-shaped rotor to act as a magnetic mirror for a cup-shaped magnet mounted on the other side of the rotor. In still another embodiment, the magnets are mounted as rotors while the conductive disk is the stator. The machine may be used as a homopolar generator or a homopolar motor,

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