Energy storage system comprising a flywheel

摘要

An energy storage system is generally disclosed. An example system includes a flywheel having a substantially cylindrical flywheel portion, and a housing defining a substantially cylindrical cavity configured so as to receive the substantially cylindrical flywheel portion. The flywheel is rotatable in the cavity about a central axis of the flywheel, and an energy exchange device is configured to convert between electrical energy and kinetic energy associated with rotation of the flywheel. The system may also have a magnetic restraint arranged to exert a magnetic restraining force on the flywheel in a direction towards the central axis.

主权项

1. A system, comprising:
a flywheel that comprises a body portion and at least a first flywheel portion and a second flywheel portion that extend from the body portion, wherein at least a portion of the body portion is interposed between the first flywheel portion and the second flywheel portion; a housing that defines a cavity configured to receive at least the first flywheel portion and the second flywheel portion, wherein the housing and the flywheel are configured in cooperation and the flywheel is rotatable in the cavity about a central axis of the flywheel; an energy exchange device arranged to convert between electrical energy and kinetic energy associated with rotation of the flywheel; and a magnetic restraint arranged to exert a magnetic restraining force on the flywheel in a direction towards the central axis.