Reduced coil segmented stator
View Patent ↗A brushless permanent magnet (BPM) electric machine including a segmented stator having interconnected stator segment assemblies defining M stator teeth. Each of said M stator teeth having substantially the same axially facing size and shape. N coil windings are individually wound about the stator teeth. N<M.
1. A segmented stator of an electric machine, comprising:
M stator segment assemblies defining M stator teeth, each of said M stator teeth having substantially the same axially facing size and shape; and
N coil windings individually wound about said stator teeth, wherein N<M and a cross-section of said coil windings is greater than 50% of a slot space between adjacent stator teeth.
2. The segmented stator of claim 1 wherein N=M/2.
3. The segmented stator of claim 2 wherein M=12.
4. The segmented stator of claim 1 wherein said N coil windings are electrically interconnected to define three phases.
5. The segmented stator of claim 1 wherein said N coil windings are wound about every other one of said M stator teeth.
6. The segmented stator of claim 1 wherein said segment assemblies each include a back surface that is perpendicular to a corresponding stator tooth, wherein said coil windings run parallel to said back surface.
7. A brushless permanent magnet (BPM) electric machine, comprising:
a segmented stator including interconnected stator segment assemblies defining M stator teeth, each of said M stator teeth having substantially the same axially facing size and shape; and
N coil windings individually wound about said stator teeth, wherein N<M and a cross-section of said coil windings is greater than 50% of a slot space between adjacent stator teeth.
8. The BPM electric machine of claim 7 wherein N=M/2.
9. The BPM electric machine of claim 8 wherein M=12.
10. The BPM electric machine of claim 7 wherein said N coil windings are wound about every other one of said M stator teeth.
11. The BPM electric machine of claim 7 wherein said second plurality of coil windings are electrically interconnected to define three phases.
12. The BPM electric machine of claim 7 further comprising a rotor having a plurality of permanent magnets disposed thereabout.
13. The BPM electric machine of claim 7 wherein said segment assemblies each include a back surface that is perpendicular to a corresponding stator tooth, wherein said coil windings run parallel to said back surface.
14. A segmented stator of an electric machine, comprising:
stator segment assemblies defining a plurality of stator teeth, each of said plurality of stator teeth having substantially the same axially facing size and shape; and
a plurality of coil windings individually wound about said stator teeth, wherein said plurality of coil windings is less than said plurality of stator teeth and a cross-section of said coil windings is greater than 50% of a slot space between adjacent stator teeth.
15. The segmented stator of claim 14 wherein said plurality of stator teeth includes M number of stator teeth and said plurality of coil windings includes M/2 number of coil windings.
16. The segmented stator of claim 15 wherein M=12.
17. The segmented stator of claim 14 wherein said plurality of coil windings are electrically interconnected to define three phases.