Distributed coil stator for external rotor three phase electric motors
First Claim
1. A distributed coil stator for three phase external rotor electric motors, comprising a core having a cylindrical surface bounded by a first end surface and a second end surface, a first set of openings aligned in a first circular path extends along said core between said first end surface and said second end surface, a second set of openings aligned in a second circular path positioned concentrically within said first circular path extends along said core between said first end surface and said second end surface, a third set of openings aligned in a third circular path positioned concentrically within said second circular path extends along said core between said first end surface and said second end surface, and a first plurality of conductors extending through said first set of openings and wrapping around in at least one loop between adjacent pairs of said first set of openings to form a first set of stator coils, a second plurality of conductors extending through said second set of openings and wrapping around in at least one loop between adjacent pairs of said second set of openings to form a second set of stator coils, and a third plurality of conductors extending through said third set of openings and wrapping around in at least one loop between adjacent pairs of said third set of openings to form a third set of stator coils.
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Accused Products
Abstract
A distributed coil stator (102) for external rotor electric motors includes a core having a cylindrical surface bounded by a first end surface and a second end surface, wherein a first set of openings (110) aligned in a first circular path (111) extends within the core from the first end surface to the second end surface, a second set of openings (114) aligned in a second circular path (115) positioned concentrically within the first circular path extends within the core from the first end surface to the second end surface, and a third set of openings (118) aligned in a third circular path (119) positioned concentrically within the second circular path extends within the core from the first end surface to the second end surface.
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Citations
11 Claims
- 1. A distributed coil stator for three phase external rotor electric motors, comprising a core having a cylindrical surface bounded by a first end surface and a second end surface, a first set of openings aligned in a first circular path extends along said core between said first end surface and said second end surface, a second set of openings aligned in a second circular path positioned concentrically within said first circular path extends along said core between said first end surface and said second end surface, a third set of openings aligned in a third circular path positioned concentrically within said second circular path extends along said core between said first end surface and said second end surface, and a first plurality of conductors extending through said first set of openings and wrapping around in at least one loop between adjacent pairs of said first set of openings to form a first set of stator coils, a second plurality of conductors extending through said second set of openings and wrapping around in at least one loop between adjacent pairs of said second set of openings to form a second set of stator coils, and a third plurality of conductors extending through said third set of openings and wrapping around in at least one loop between adjacent pairs of said third set of openings to form a third set of stator coils.
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6. A method for providing a distributed coil stator for external rotor electric motors, comprising:
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providing a core having a cylindrical surface bounded by a first end surface and a second end surface; forming a first set of openings that extend within said core from said first end surface to said second end surface along a first circular path; forming a second set of openings that extend within said core from said first end surface to said second end surface along a second circular path concentrically disposed within said first circular path; forming a third set of openings that extend within said core from said first end surface to said second end surface along a third circular path concentrically disposed within said second circular path extending a first plurality of conductors through said first set of openings and wrapping said first plurality of conductors around in at least one loop between adjacent pairs of said first set of openings to form a first set of stator coils; extending a second plurality of conductors through said second set of openings and wrapping said second plurality of conductors around in at least one loop between adjacent pairs of said second set of openings to form a second set of stator coils; and extending a third plurality of conductors through said third set of openings and wrapping said third plurality of conductors around in at least one loop between adjacent pairs of said third set of openings to form a third set of stator coils. - View Dependent Claims (7, 8, 9)
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10. A coil stator comprising:
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a core; a first annular array of openings; a second annular array of openings positioned concentrically within said first annular array of openings; a third annular array of openings positioned concentrically within said second annular array of openings, a first plurality of conductors extending through said first array of openings and wrapping around in at least one loop between adjacent pairs of said first array of openings to form a first set of stator coils, a second plurality of conductors extending through said second array of openings and wrapping around in at least one loop between adjacent pairs of said second array of openings to form a second set of stator coils, and a third plurality of conductors extending through said third array of openings and wrapping around in at least one loop between adjacent pairs of said third array of openings to form a third set of stator coils. - View Dependent Claims (11)
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Specification