Transverse and/or commutated flux system rotor concepts
Disclosed are transverse and/or commutated flux machines and components thereof, and methods of making and using the same. Certain rotors for use in transverse and commutated flux machines may be formed to facilitate a “many to many” flux switch configuration between flux concentrating stator portions having opposite polarities. Other rotors may be formed from a first material, and contain flux switches formed from a second material. Yet other rotors may be machined, pressed, stamped, folded, and/or otherwise mechanically formed. Via use of such rotors, transverse and/or commutated flux machines can achieve improved performance, efficiency, and/or be sized or otherwise configured for various applications.
1. An electrical machine, comprising:
a multipath rotor comprising a first set of elbows on a first side of the rotor and a second set of elbows on a second side of the rotor,
wherein the first set of elbows are positioned on the rotor to align with at least one of a first set of flux concentrating stator portions having a first polarity,
wherein the second set of elbows are positioned on the rotor to align with at least one of a second set of flux concentrating stator portions having a second polarity different from the first polarity, and
wherein the electrical machine is at least one of a transverse flux machine or a commutated flux machine.
2. The electrical machine of claim 1 , wherein the rotor provides a flux path from each one of the first set of flux concentrating stator portions to each one of the second set of flux concentrating stator portions.
3. The electrical machine of claim 1 , wherein the rotor comprises layers of planar material.
4. The electrical machine of claim 1 , wherein a first elbow of the first set of elbows aligns with a flux concentrating portion of a first stator, and wherein a second elbow of the first set of elbows aligns with a flux concentrating portion of a second stator, the first elbow and the second elbow being adjacent within the first set of elbows.
5. The electrical machine of claim 1 , further comprising a plurality of stators operatively coupled to the rotor.
6. The electrical machine of claim 1 , wherein the rotor is coupled to at least one of: an automobile wheel, a bicycle wheel, a scooter wheel, a propeller, a machine tool, or a drum of a washing machine.
7. The electrical machine of claim 1 , wherein the engagement depth of the rotor with a stator is variable in order to vary at least one of: a voltage constant of the electrical machine, a torque constant of the electrical machine, an efficiency level of the electrical machine, or an RPM of the electrical machine.
8. The electrical machine of claim 1 , wherein the electrical machine has a continuous, thermally stable torque density in excess of 50 Newton-meters per kilogram.
9. The electrical machine of claim 8 , wherein the electrical machine has a diameter less than 14 inches.
10. The electrical machine of claim 1 , wherein a first subset of the elbows in the first set of elbows are configured with a first on-center distance between elbows, wherein a second subset of the first set of elbows are configured with a second on-center distance between elbows, and wherein the first on-center distance and second on-center distance are different.
11. The electrical machine of claim 1 , wherein the rotor is configured to support a magnetic flux switching frequency in the electrical machine in excess of 1000 Hz.
12. The electrical machine of claim 1 , wherein the rotor comprises a material having a saturation induction in excess of 1.0 Tesla.
13. The electrical machine of claim 1 , wherein the rotor is configured with a bulk permeability in excess of 1,000μ.
14. The electrical machine of claim 1 , wherein the rotor comprises alternating layers of a first material and a second material.
15. The electrical machine of claim 14 , wherein the first material comprises silicon steel, and wherein the second material comprises nanocrystalline composite.
16. The electrical machine of claim 1 , wherein the first side and the second side are concentric.
17. The electrical machine of claim 1 , wherein the first side and the second side are divisible by a plane perpendicular to the axis of rotation of the electrical machine.
18. The electrical machine of claim 3 , wherein one of the layers of planar material comprises silicon steel, and wherein another of the layers of planar material comprises nanocrystalline composite.
19. The electrical machine of claim 3 , wherein one of the layers of planar material comprises nanocrystalline composite, and wherein another of the layers of planar material comprises amorphous metal.