Three-phase multi-winding device
View Patent ↗A three-phase, multi-winding includes a core, the core including a hub and an outer shell around a perimeter of the hub. wherein the hub and the outer shell are in a fixed position with respect to each other. The core also includes multiple slots. In addition to the core, the multi-winding device includes a primary winding positioned in at least two of the slots; and multiple spatially distributed secondary windings, wherein at least one of the secondary windings is positioned proximate the primary winding in at least one of the two slots.
1. A three-phase, multi-winding device, comprising:
a core comprising
a hub,
an outer shell around a perimeter of the hub, wherein the hub and the outer shell are in a fixed position with respect to each other, and
a plurality of slots;
a primary winding comprising a plurality of coils, wherein each of the plurality of coils is positioned in at least two of the slots; and
a plurality of spatially distributed secondary windings, wherein a first secondary winding and a second secondary winding are positioned proximate a first coil of the primary winding in at least two of the slots.
2. The multi-winding device of claim 1 , wherein the slots are sized to accept a plurality of windings and arranged to position at least a portion of the accepted windings between the hub and the outer shell.
3. The multi-winding device of claim 2 , wherein the hub and the outer shell define a spacing therebetween.
4. The multi-winding device of claim 1 , wherein the core further comprises a plurality of spokes.
5. The multi-winding device of claim 4 , wherein the hub and outer shell are connected via the plurality of spokes, and the slots are defined by the hub, shell and spokes.
6. The multi-winding device of claim 4 , wherein the plurality of spokes extend from the hub toward the shell, and the slots are defined by the hub, shell and spokes.
7. The multi-winding device of claim 4 , wherein the plurality of spokes extend from the shell toward the hub, and the slots are defined by the hub, shell and spokes.
8. The multi-winding device of claim 1 , wherein the plurality of slots are integral with either the hub, the shell, or a combination of both the hub and the shell.
9. The multi-winding device of claim 1 , wherein at least a portion of the core is constructed from a plurality of inter-leaved layers.
10. The multi-winding device of claim 1 , wherein each of the plurality of slots contains a primary winding and a plurality of secondary windings, wherein the secondary windings have unique phases.
11. A method for generating AC voltages at specified phase angles, the method comprising:
applying a first AC voltage to a stationary primary winding of a three-phase multi-winding device;
passing an AC current through the primary winding;
generating a radial magnetic field which rotates around an axis of symmetry defined by a core of the three-phase multi-winding device; and
inducing a second AC voltage in a plurality of stationary spatially distributed secondary windings of the three-phase multi-winding device, wherein a first secondary winding and a second secondary winding are positioned proximate a first coil of the (primary winding in at least two slots the three-phase multi-winding device.
12. The method of claim 11 , wherein the mufti-winding device comprises:
a core comprising:
a hub,
an outer shell around a perimeter of the hub, wherein the hub and the outer shell are in a fixed position with respect to each other, and
a plurality of slots;
a primary winding positioned in at least two of the slots; and
the plurality of spatially distributed secondary windings.
13. The method of claim 12 , wherein the core of said multi-winding device further comprises a plurality of spokes, and the slots are defined by the hub, shell and spokes.
14. The method of claim 13 , wherein the spokes carry the radial magnetic field around the axis of symmetry.
15. The method of claim 13 , wherein the slots are sized to accept a plurality of windings and arranged to position at least a portion of the accepted windings between the hub and the outer shell.
16. An apparatus, comprising:
a plurality of power cells; and
a multi-winding device connected to each of the power cells, wherein the multi-winding device comprises:
a core comprising:
a hub,
an outer shell around a perimeter of the hub, wherein the hub and the outer shell are in a fixed position with respect to each other, and
a plurality of slots;
a primary winding comprising a plurality of coils, wherein each of the plurality of coils is positioned in at least two of the slots; and
a plurality of spatially distributed secondary windings, wherein a first secondary winding and a second secondary winding are positioned proximate a first coil of the primary winding in at least two of the slots.
17. The apparatus of claim 16 , wherein the slots are sized to accept a plurality of windings and arranged to position at least a portion of the accepted windings between the hub and the outer shell.
18. The apparatus of claim 17 , wherein the hub and the outer shell define a spacing therebetween.
19. The apparatus of claim 16 , wherein the core further comprises a plurality of spokes.