Switched reluctance electric machine
AssigneeHamilton Sundstrand Corporation
InventorsJagadeesh K. Tangudu, Andreas C. Koenig, Suman Dwari, Todd A Spierling
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Abstract
Aircraft electric machines are described. The aircraft electric machines include a laminated rotor operably connected to a shaft, the laminated rotor comprising a plurality of rotor teeth and air gaps defined between adjacent rotor teeth about a circumference of the laminated rotor, a modular stator assembly comprising at least one stator segment having a winding wrapped about a center body of the at least one stator segment, a cooling element arranged at least one of adjacent to or within the winding, and at least one power module system comprising an active rectifier and wherein the laminated rotor and modular stator are arranged as a switched reluctance rotor-stator assembly.
Claims20
An aircraft electric machine comprising:
- a laminated rotor operably connected to a shaft, the laminated rotor comprising a plurality of rotor teeth and air gaps defined between adjacent rotor teeth about a circumference of the laminated rotor;
- a modular stator assembly comprising at least one stator segment having a winding wrapped about a center body of the at least one stator segment;
- a cooling element arranged at least one of adjacent to or within the winding;
- and
- at least one power module system comprising an active rectifier and wherein the laminated rotor and modular stator are arranged as a switched reluctance rotor-stator assembly,
- wherein the cooling element comprises a primary cooling body arranged in a radial orientation relative to the shaft and at least one secondary cooling extension that extends from the primary cooling body in a direction tangential or circumferential relative to the shaft and at least one of the primary cooling body and the at least one secondary cooling extension comprise a secondary cooling feature configured to provide cooling to material of the at least one stator segment.
An aircraft electric machine comprising:
- a laminated rotor operably connected to a shaft, the laminated rotor comprising a plurality of rotor teeth and air gaps defined between adjacent rotor teeth about a circumference of the laminated rotor;
- a modular stator assembly comprising at least one stator segment having a winding wrapped about a center body of the at least one stator segment;
- a cooling element arranged at least one of adjacent to or within the winding;
- and
- at least one power module system comprising an active rectifier and wherein the laminated rotor and modular stator are arranged as a switched reluctance rotor-stator assembly,
- wherein the cooling element comprises a primary cooling body arranged in a radial orientation relative to the shaft and at least one secondary cooling extension that extends from the primary cooling body in a direction tangential or circumferential relative to the shaft and each of the primary cooling body and the at least one secondary cooling extension define internal cooling channels to receive a cooling fluid to pick up heat from the winding.
An aircraft electric machine comprising:
- a laminated rotor operably connected to a shaft, the laminated rotor comprising a plurality of rotor teeth and air gaps defined between adjacent rotor teeth about a circumference of the laminated rotor;
- a modular stator assembly comprising at least one stator segment having a winding wrapped about a center body of the at least one stator segment;
- a first cooling element arranged at least one of adjacent to or within the winding and arranged on a first side of the winding;
- a second cooling element arranged on a second side of the winding opposite the first cooling element, wherein the first cooling element is fluidly connected in series to the second cooling element by at least one fluid connector, such that a cooling fluid will pass through the first cooling element and then the second cooling element;
- at least one power module system comprising an active rectifier and wherein the laminated rotor and modular stator are arranged as a switched reluctance rotor-stator assembly;
- and
- a cold plate configured to supply the cooling fluid into the first cooling element and receive the cooling fluid from the second cooling element.
Dependencies are inferred from the claim text.