Multi-tunnel electric motor/generator segment

Patent metadata

Field	Value
Publication number	US-10476362-B2
Application number	US-201615008431-A
Country	US
Kind code	B2
Filing date	Jan 27, 2016
Priority date	Jun 28, 2015
Publication date	Nov 12, 2019
Grant date	Nov 12, 2019

Abstract

Disclosed are various embodiments for a motor/generator where the stator is a coil assembly and the rotor is a magnetic toroidal cylindrical tunnel or where the rotor is a coil assembly and the stator is a magnetic toroidal cylindrical tunnel, and where the magnetic toroidal cylindrical tunnel comprises magnetics having a NNSS or SSNN pole configuration.

First claim

The invention claimed is:

1. A rotary motor/generator segment comprising:
a toroidal magnetic cylinder comprising a plurality of magnetic tunnel segments radially arranged about a longitudinal axis to form a circular path, wherein the plurality of magnetic tunnel segments comprises at least:
a first closed magnetic tunnel segment comprising:
a first inner magnetic wall having a magnetic pole orientation that points generally towards an interior of the first closed magnetic tunnel segment;
a first outer magnetic wall having a magnetic pole orientation that points generally towards the interior of the first closed magnetic tunnel segment, the first outer magnetic wall positioned farther from the longitudinal axis than the first inner magnetic wall;
a first ring magnetic wall having a magnetic pole orientation that points generally towards the interior of the first closed magnetic tunnel segment and positioned to generally span a radial distance between the first inner magnetic wall and the first outer magnetic wall;
a first opposing ring magnetic wall having a magnetic pole orientation that points generally towards the interior of the first closed magnetic tunnel segment and positioned to generally span the radial distance between the first inner magnetic wall and the first outer magnetic wall;
wherein like magnetic poles of the first inner magnetic wall and the first ring magnetic wall are orientated in an opposite direction from the like poles of first outer magnetic wall and the first opposing ring magnetic wall;

a second closed magnetic tunnel segment positioned circumferentially adjacent to the first magnetic tunnel segment, the second closed magnetic tunnel segment comprising:
a second inner magnetic wall having a magnetic pole orientation that points generally towards an interior of the second closed magnetic tunnel segment;
a second outer magnetic wall having a magnetic pole orientation that points generally towards the interior of the second closed magnetic tunnel segment, the second outer magnetic wall positioned farther from the longitudinal axis than the second inner magnetic wall;
a second ring magnetic wall having a magnetic pole orientation that points generally towards the interior of the second closed magnetic tunnel segment and positioned to generally span a radial distance between the second inner magnetic wall and the second outer magnetic wall;
a second opposing ring magnetic wall having a magnetic pole orientation that points generally towards the interior of the second closed magnetic tunnel segment and positioned to generally span the radial distance between the second inner magnetic wall and the second outer magnetic wall;
wherein like magnetic poles of the second inner magnetic wall and the second ring magnetic wall are orientated in an opposite direction from the like poles of second outer magnetic wall and the second opposing ring magnetic wall;
wherein the magnetic poles of the magnetic walls comprising the second closed magnetic tunnel segment are orientated in a direction opposite to the magnetic poles of the magnetic walls comprising the first closed magnetic tunnel segment;

a coil assembly positioned within the circular path, the coil assembly comprising:
a ring-like core;
a plurality of teeth radially positioned about the ring-like core and extending from the ring-like core to form a plurality of slots;
a plurality of coil windings wherein each coil winding in the plurality of winding is positioned within a slot within the plurality of slots.

2. The rotary motor/generator segment of claim 1 , wherein material forming the plurality of magnetic tunnel segments is selected from the group consisting of iron, magnetic steel, or laminated steel.

3. The rotary motor/generator segment of claim 1 , wherein the first inner magnetic wall, the first outer magnetic wall, the first ring magnetic wall and the first opposing ring magnetic wall may be formed from electromagnets.

4. The rotary motor/generator segment of claim 1 , wherein the second inner magnetic wall, the second outer magnetic wall, the second ring magnetic wall and the second opposing ring magnetic wall may be formed from electromagnets.

5. The rotary motor/generator segment of claim 1 , further comprising a back iron circuit surrounding the plurality of magnetic tunnel segments.

6. The rotary motor/generator segment of claim 1 , further comprising a shaft concentrically positioned about the longitudinal axis.

7. The rotary motor/generator segment of claim 1 , wherein substantially all of the wire windings in an individual coil is substantially positioned within a magnetic field created by the first magnetic tunnel segment when the individual coil is positioned within the magnetic tunnel segment.

8. The rotary motor/generator segment of claim 1 , wherein a magnetic field generated by the inner magnetic wall and a current flowing within wire windings in an adjacent coil creates a tangential magnetic force in a direction of relative movement between the magnetic cylinder and the coil assembly.

9. The rotary motor/generator segment of claim 1 , wherein the magnetic field generated by the outer magnetic wall and a current flowing within wire windings in an adjacent coil creates a tangential magnetic force in a direction of relative movement between the magnetic cylinder and the coil assembly.

10. The rotary motor/generator segment of claim 1 , wherein the magnetic field generated by the first ring magnetic wall and a current flowing within wire windings in an adjacent coil creates a tangential magnetic force in a direction of relative movement between the magnetic cylinder and the coil assembly.

11. The rotary motor/generator segment of claim 1 , wherein the magnetic field generated by the opposing ring magnetic wall and a current flowing within wire windings in an adjacent coil creates a tangential magnetic force in a direction of relative movement between the magnetic cylinder and the coil assembly.

12. The rotary motor/generator segment of claim 1 , wherein a tangential magnetic force is generated on all sides of individual coils in the plurality of coils when the individual coil is positioned within the first closed magnetic tunnel segment or second closed magnetic tunnel segment.

13. The rotary motor/generator segment of claim 1 , wherein the plurality of tunnel segments includes a third closed magnetic tunnel segment and a fourth closed magnetic tunnel segment wherein the magnetic poles of the magnetic walls comprising the third closed magnetic cylinder segment are orientated in a direction opposite to the magnetic poles of the magnetic walls comprising the fourth closed magnetic tunnel segment.

14. The rotary motor/generator segment of claim 13 , wherein the plurality of tunnel segments includes a fifth closed magnetic tunnel segment and a sixth closed magnetic tunnel segment wherein the magnetic poles of the magnetic walls comprising the fifth closed magnetic cylinder segment are orientated in a direction opposite to the magnetic poles of the magnetic walls comprising the sixth closed magnetic tunnel segment.

15. The rotary motor/generator segment of claim 14 , wherein the plurality of tunnel segments includes a seventh closed magnetic tunnel segment and an eighth closed magnetic tunnel segment wherein the magnetic poles of the magnetic walls comprising the seventh closed magnetic cylinder segment are orientated in a direction opposite to the magnetic poles of the magnetic walls comprising the eighth closed magnetic tunnel segment.

Assignees

• Linear Labs Inc
• Linear Labs Llc

Inventors

• Hunstable Fred E

Classifications

• H02K1/18

  Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures · CPC title

• H02K1/27

  Rotor cores with permanent magnets · CPC title

• H02K1/145

  having an annular coil, e.g. of the claw-pole type · CPC title

• H02K21/26 Primary

  with rotating armatures and stationary magnets · CPC title

• H02K21/12

  with stationary armatures and rotating magnets · CPC title