Multi-phase stator device
AssigneeHöGanäS AB (Publ)
InventorsGlynn James Atkinson, Alan G Jack, Barrie Mecrow
Life of this patent
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Abstract
Disclosed is a stator device adapted to be arranged in an electrical machine, where the electrical machine further includes a moving device, where the stator device is a multi-phase stator device, where the phases are arranged side-by-side in a direction perpendicular to direction of motion of the moving device, and where each phase comprises a first stator core section having a set of teeth, a second stator core section having a set of teeth, and a coil, and where the teeth are arranged to protrude towards the moving device; and wherein at least two neighboring phases share a stator core section, so that the first stator core section of a first phase and a second stator core section of a second phase is formed as a single unit.
Claims32
An electrical machine comprising a stator device and a moving device,
- wherein the stator device is a multi-phase stator device comprising a plurality of phases arranged side-by-side in a lateral direction, perpendicular to a direction of motion of the moving device, where the stator device comprises a plurality of sets of teeth, each tooth protruding towards the moving device and comprising an interface surface facing the moving device, wherein the teeth of each set are distributed along the direction of motion, wherein the plurality of sets of teeth comprises two peripheral sets and a plurality of inner sets arranged in the lateral direction between the peripheral sets;
- where the teeth of the inner sets are wider, in the lateral direction, than the teeth of the peripheral sets and provide a common magnetic flux path shared by two neighbouring phases;
- wherein the interface surfaces of the teeth of the peripheral sets define a lateral extent of an active air gap region between the stator device and the moving device;
- wherein the stator device comprises at least two separate stator core sections that abut each other and share one of the plurality of phases;
- wherein the moving device comprises a plurality of permanent magnets separated from each other in said direction of motion by pole sections formed as rectilinear rods elongated in the lateral direction, the rods providing a magnetic flux path extending across the lateral extent of the active air gap region;
- and
- wherein the teeth of the respective sets are arranged displaced in the direction of motion relative to the teeth of the other sets.
A stator device adapted to be arranged in an electrical machine, where the electrical machine further comprises a moving device,
- where the stator device is a multi-phase stator device, where the phases are arranged side-by-side in a direction perpendicular to a direction of motion of the moving device, and where each phase comprises two stator core sections each having a respective set of teeth, a flux bridge connecting the stator core sections, and a coil, and where the teeth are arranged to protrude towards the moving device;
- and
- wherein the teeth of a first stator core section of a first one of two neighbouring phases and the corresponding teeth of a second stator core section of a second one of the two neighbouring phases provide a common magnetic flux path shared by both neighbouring phases;
- and
- wherein the stator device comprises at least two separate stator core sections that abut each other and share one of the plurality of phases.
Dependencies are inferred from the claim text.