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US 2020/0091783 A1Published application
Self-exciting synchronous reluctance generators
AssigneeHamilton Sundstrand Corporation
InventorsJacek F. Gieras, Gregory I. Rozman
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Abstract
A stator for a generator includes a ferromagnetic core with two or more poles arranged about a rotation axis, a direct current (DC) field coil, and four or more alternating current (AC) coils. The DC field coil is wrapped about the pole. A first of the AC coils is wrapped about the pole at a location circumferentially spaced from a second of the AC coils. Generator systems and methods self-exciting synchronous reluctance generators are also described.
Claims20
A stator for a generator, comprising:
- a ferromagnetic core with a plurality of poles arranged about a rotation axis;
- and
- a direct current (DC) coil wrapped about the poles,
- wherein the plurality of poles include first and second alternating current (AC) coils wrapped about each of the plurality of poles, the second AC coil being circumferentially spaced apart from the first AC coil relative to the rotation axis, and
- wherein each of the poles is split into two symmetrical parts that create armature poles.
2 more elements
A method of self-exciting a synchronous reluctance generator, comprising:
- magnetizing a rotor with magnetic flux communicated by a permanent magnet;
- rotating the rotor relative to a stator having a direct current (DC) coil and alternating current (AC) coils;
- inducing an AC flow in the AC coil;
- rectifying the AC flow into a DC flow;
- applying the DC flow to the DC coil;
- and
- further magnetizing the rotor with magnetic flux communicated from the DC coil.
4 more elements
Dependencies are inferred from the claim text.