Hybrid winding configuration of an electric machine
First Claim
1. A stator for an electric machine, the stator comprising:
- an elongate core having an end face and an opposing end face, the elongate core adapted to internally receive a rotor of an electric machine;
a conductive winding carried by the core and comprising a plurality of coils, each coil defining a loop that extends axially through the elongate core, exits the core through the end face at an exit location, and reenters the core through the end face at a reentry location, each coil spanning a distance on the end face between its exit location and its reentry location, a first subset of the coils each spanning a distance that is substantially equal to the distances spanned by each other coil in the first subset, a second subset of the coils each spanning a distance that is unequal to the distance spanned by any other coil in the second subset.
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Accused Products
Abstract
An electric machine system includes an electric machine and a companion device. The electric machine has a stationary member and a movable member that, by interaction of magnetic fields, at least one of moves relative to the stationary member or generates electricity when moved relative to the stationary member. One of the stationary member and the movable member comprising a permanent magnet. The companion device is coupled to the electric machine to communicate mechanical movement with the movable member. In certain instances, the electric machine system has adaptations for operation of the electric machine system subsea and/or in a corrosive environment. The electric machine includes a stator that carries a conductive winding having multiple coils. A first subset of the coils are in a first configuration, and a second subset of the coils are in a second configuration. In some implementations, the first configuration is a lap winding configuration, and the second configuration is a concentric winding configuration.
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Citations
25 Claims
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1. A stator for an electric machine, the stator comprising:
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an elongate core having an end face and an opposing end face, the elongate core adapted to internally receive a rotor of an electric machine; a conductive winding carried by the core and comprising a plurality of coils, each coil defining a loop that extends axially through the elongate core, exits the core through the end face at an exit location, and reenters the core through the end face at a reentry location, each coil spanning a distance on the end face between its exit location and its reentry location, a first subset of the coils each spanning a distance that is substantially equal to the distances spanned by each other coil in the first subset, a second subset of the coils each spanning a distance that is unequal to the distance spanned by any other coil in the second subset. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A stator for an electric machine, the stator comprising:
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an elongate core adapted to internally receive a rotor of an electric machine; and a conductive winding carried by the core and comprising a first plurality of coils arranged in a lap winding configuration and a second plurality of coils arranged in a concentric winding configuration. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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19. A method of making a stator of an electric machine, the method comprising:
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installing a first plurality of coils in a core of a stator; and installing a second plurality of coils in the core of the stator, wherein each coil in the first plurality and the second plurality defines a loop that extends axially through the core, exits the core through an end face of the core at an exit location, and reenters the core through the end face of the core at a reentry location, each coil in the first plurality and the second plurality spans a distance on the end face between its exit location and its reentry location, the distance spanned by each of the first plurality of the coils is substantially equal to the distances spanned by each other coil in the first plurality, and the distance spanned by each of the second plurality of the coils is unequal to the distance spanned by any other coil in the second plurality. - View Dependent Claims (20, 21, 22, 23, 24, 25)
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Specification