Immersed windings, monopole field, electromagnetic rotating machine
A rotating electromagnetic apparatus has a stator frame supporting spaced apart pairs of permanent magnets which are arranged with like magnetic poles mutually facing. A toroidally shaped rotor frame is radially wound with a plurality of wire coils immersed within slots in the in rotor frame, the slots positioned adjacent to the opposing magnets. An electromechanical commutator is used to direct current between an outside source or sink through brushes to rotating multiple contacts simultaneously. The brushes are triangular in cross section. The coils may be connected in series or parallel interconnection.
1. A rotating electromagnetic apparatus comprising:
a stator frame supporting spaced apart pairs of permanent magnets, the permanent magnet pairs arranged with like magnetic poles thereof in mutually facing positions;
a toroidally shaped rotor frame of magnetically permeable material having an outer circumferential surface, an inner circumferential surface, and a pair of side surfaces positioned adjacent to the pairs of permanent magnets, the rotor frame mounted on an axle rotationally supported by the stator frame, the rotor frame having a plurality of spaced apart pairs of radially directed slots in the side surfaces; a plurality of wire coils wound around the rotor frame, with each one of the wire coils lying inside one of the spaced apart pairs of the slots and on the outer and inner circumferential surfaces, wherein no part of the wire coils extends laterally away from, or on, the side surfaces, and
a plurality of contacts mounted on the rotor frame and rotational therewith, each one of the contacts in electrical common with one of the wire coils, the wire coils thereby in brief electrical communion with each one of a plurality of fixed brushes mounted on the stator frame, the brushes each having a generally right-triangular cross-sectional shape providing a hypotenuse surface thereon in position for contacing the contacts during rotation of the rotor frame.
2. The rotating electromagnetic apparatus of claim 1 further comprising an electromechanical commutator having a number of brushes equal to a number of permanent magnet poles of the permanent magnets facing the rotor frame, each of the brushes connected with all of the wire coils immersed in one of a magnetic field of one of the permanent magnets.
3. The rotating electromagnetic apparatus of claim 2 wherein the wire coils are in electrical common interconnection, with each one of the coils further in electrical common with one of the contacts.
4. The rotating electromagnetic apparatus of claim 1 wherein the respective contacts are in face-to-face sliding contact with the hypotenuse surfaces during rotation of the rotor frame.
5. The rotating electromagnetic apparatus of claim 1 wherein diametrically opposing pairs of the wire coils are in electrical series connection.
6. The rotating electromagnetic apparatus of claim 1 wherein the wire coils are in series electrical connection with opposing pairs of the wire coils positioned for making contact sequentially with opposing pairs of the brushes.