Flux-switching machine
AssigneeROLLS-ROYCE plc
InventorsStephen Mark Husband, David James Powell, Zi-Qiang Zhu, Geraint Wyn Jewell, Arwyn Thomas
Life of this patent
Estimating the term…
Abstract
A flux-switching machine stator comprising two or more C-cores, each C-core having two legs and a back portion joining the legs, and a permanent magnet arranged between legs of adjacent C-cores. Each leg has a main portion and a tip portion further from the back portion characterized in that the tip portion of each leg is angled relative to the main portion of the respective leg.
Claims18
A permanent magnet flux-switching machine stator comprising:
- two or more C-cores, each C-core having two legs and a back portion joining the legs, each leg having a main portion and a tip portion, the tip portion being located further from the back portion than is the main portion, each leg including the main portion and the tip portion having a same constant width extending in a plane normal to an axial direction of the stator, and the tip portion of each leg angled relative to the main portion of the respective leg, and
- a permanent magnet arranged between legs of adjacent ones of the two or more C-cores.
A permanent magnet flux-switching machine comprising a rotor and a stator, said stator having:
- two or more C-cores, each having two legs and a back portion joining the legs, each leg having a main portion and a tip portion being located further from the back portion than is the main portion, each leg including the main portion and the tip portion having a same constant width extending in a plane normal to an axial direction of the stator, and the tip portion of each leg angled relative to the main portion of the respective leg, and
- a permanent magnet arranged between legs of adjacent C-cores;
- and
- said rotor having a number of poles related to the number of C-cores in said stator, such that flux reverses in the poles of said rotor during its rotation.
A gas turbine engine comprising:
- a permanent magnet flux-switching machine having:
- two or more C-cores, each having two legs and a back portion joining the legs, each leg having a main portion and a tip portion being located further from the back portion than is the main portion, each leg including the main portion and the tip portion having a same constant width extending in a plane normal to an axial direction of the stator, and the tip portion of each leg angled relative to the main portion of the respective leg, and
- a permanent magnet arranged between legs of adjacent C-cores.
A permanent magnet flux-switching machine stator comprising:
- two or more C-cores, each C-core having two legs and a back portion joining the legs, each leg having a main portion and a tip portion being located further from the back portion than is the main portion, each leg including the main portion and the tip portion of a same constant width extending in a plane normal to an axial direction of the stator, and the tip portion of each leg angled relative to the main portion of the respective leg;
- a permanent magnet arranged between legs of adjacent C-cores to form a tooth;
- and
- an electromagnetic winding wound around each tooth.
Dependencies are inferred from the claim text.