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. A multipath rotor for an electrical machine, comprising:
a first set of elbows on a first side of the multipath rotor; and
a second set of elbows on a second side of the multipath rotor opposite the first side, wherein the multipath rotor is configured to serve as a flux switch in the electrical machine by providing a flux path from each one of the first set of elbows to each one of the second set of elbows, and wherein the electrical machine is at least one of a transverse flux, machine or a commutated flux machine.
2. The multipath rotor of claim 1 , wherein the multipath rotor comprises layers of planar material.
3. The multipath rotor of claim 2 , wherein the layers of planar material comprise layers of at least two different planar materials.
4. The multipath rotor of claim 1 , wherein the multipath rotor is configured with a generally annular shape.
5. The multipath rotor of claim 1 , wherein the multipath rotor is configured to support a magnetic flux switching frequency in excess of 1000 Hz.
6. The multipath rotor of claim 1 , wherein the on-center spacing between a first elbow and an adjacent second elbow in the first set of elbows differs from the on-center spacing between the second elbow and an adjacent third elbow in the first set of elbows.
7. The multipath rotor of claim 1 , wherein the switch area of a first elbow in the first set of elbows differs from the switch area of a second elbow in the first set of elbows.
8. The multipath rotor of claim 1 , wherein the multipath rotor is utilized in a direct drive hub motor for an electric vehicle.
9. The multipath rotor of claim 1 , wherein the flux path between one of the first set of elbows and an adjacent one of the second set of elbows is configured with an angle of between about 5 degrees and about 70 degrees with respect to the rotational plane of the multipath rotor.