Flywheel type energy storage apparatus
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorsIsao Takahashi, Kazuhiko Tanaka, Akinori Nishihiro, Takeshi Irino
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Abstract
A flywheel type energy storage apparatus for use in an uninterruptible power supply has an induction motor which serves as a generator/motor, in which a rotor (65) of the induction motor is constituted by incorporation of a rotor core (62) and a flywheel (64) with a rotor shaft (56) vertically born by a pivot bearing (55) and a magnetic bearing (67).
Claims11
An energy storage apparatus for storing electrical energy as rotational kinetic energy and for outputting said kinetic energy as electrical energy, comprising:
- a vacuum container;
- and
- an induction motor/generator contained in said vacuum container, said induction motor/generator including
- a rotor,
- a stator, and
- a flywheel rotatably supported in said vacuum container by a shaft,
- said flywheel including a circular winding of wire having a large number of turns which is substantially coaxial with said shaft and which is wound around said rotor.
An energy storage apparatus for storing electrical energy as rotational kinetic energy and for outputting said kinetic energy as electrical energy, comprising:
- a vacuum container;
- and an induction motor/generator contained in said vacuum container, said induction motor/generator including
- a flywheel rotatably supported in said vacuum container by a rotatable shaft, said flywheel including a circular winding of wire having a large number of turns which is substantially coaxial with said shaft,
- a rotor mounted on said flywheel, said rotor
- including a multiple lamination of ring-shaped ferromagnetic metal sheets, and a stator.
An energy storage apparatus for storing electrical energy as rotational kinetic energy and for outputting said kinetic energy as electrical energy, comprising:
- a vacuum container;
- and
- an induction motor/generator contained in said vacuum container, said induction motor/generator including
- a flywheel rotatably supported in said vacuum container by a rotatable shaft, said flywheel including a circular winding of wire having a large number of turns which is substantially coaxial with said shaft,
- a rotor mounted on said flywheel, and
- a stator, wherein said stator includes a multiple lamination of thin ferromagnetic metal sheets having a coil wound thereon.
An energy storage apparatus for storing electrical energy as rotational kinetic energy and for outputting said kinetic energy as electrical energy, comprising:
- a vacuum container;
- and
- an induction motor/generator contained in said vacuum container, said induction motor/generator including:
- a flywheel rotatably supported in said vacuum container by a rotatable shaft which is fixed to said flywheel for rotation therewith,
- a rotor mounted on said flywheel, and
- a stator, said rotatable shaft extending within said stator, and said rotor extending around said stator.
Dependencies are inferred from the claim text.