Electromagnetic device with reversible generator-motor operation
AssigneeAVIO S.p.A.
InventorMarco Cipriani
Life of this patent
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Abstract
An electromagnetic device has a stator and a rotor rotating between facing surfaces of the stator and bearing a plurality of magnets distributed at regular intervals along its periphery. The magnets are so arranged that they form a sequence of alternately opposite poles on the surfaces of the rotor directed towards the stator, and the stator comprises two sets of independently supported magnetic yokes located at both sides of the rotor in front of the magnets. The magnetic yokes have two axially oriented arms, the end surfaces of which, in static conditions of the rotor, at least partly face a pair of successive magnets on a same surface of the rotor.
Claims37
1-36. (canceled)
An electromagnetic device (10) with reversible generator-motor operation, the device (10) comprising:
- a rotor (12;
- 12′) rotating about an axis and bearing a plurality of magnets (14;
- 14′, 14′a, 14′b;
- 140) distributed at regular intervals there around and with alternate orientations in a substantially ring-shaped pattern;
- a stator (16, 20a, 20b, 18, 22a, 22b;
- 16′, 18′, 20′, 22′) comprising at least one set of magnetic yokes (16, 18;
- 16′, 18′) each having a pair of projecting arms (17a, 17b, 19a, 19b;
- 7) that extend towards the magnets (14;
- 14′, 14′a, 14′b;
- 140) and bear a respective coil (20a, 20b, 22a, 22b;
- 20′, 22′;
- 21) for electrical connection to a utilising device or a power driver, a magnetic yoke (16, 18;
- 16′, 18′;
- 6) in each set being part together with a pair of magnets (14;
- 14′, 14′a, 14′b;
- 140) confronting the yoke arms (17a, 17b, 19a, 19b;
- 7) at a given instant and an air gap separating the yoke from the magnets, of a same closed magnetic circuit;
- characterised in that the magnetic yokes (16, 18;
- 16′, 18′;
- 6) are independently mounted on supports (54) that are axially and radially adjustable for a static and dynamic adjustment of the positions of the individual yokes (16, 18;
- 16′, 18′;
- 6) relative to the magnets (14;
- 14′, 14′a, 14′b;
- 140).
Dependencies are inferred from the claim text.