Kinetic energy storage with a switched reluctance machine

A kinetic energy storage system comprising:

• a vacuum container enclosing a vacuum chamber;
• and
• a flywheel located within the vacuum chamber, the flywheel being configured to convert electrical energy into kinetic energy, wherein the flywheel comprises:
• a rotor assembly and a stator assembly located within the rotor assembly,
• wherein the stator assembly further comprises:
• a stator core;
• and
• one or more stator pole cores, each of the one or more stator pole cores being located proximate a distal end of the stator core,
• wherein the one or more stator pole cores are configured to produce a magnetic flux in an upward direction, a downward direction, and a radially outward direction, and
• wherein the kinetic energy storage system is configured to operate as a switched reluctance machine without the need for permanent magnets, and
• wherein the rotor assembly has a multi-ray star shape, the rotor assembly further comprising:
• an upper rotor cup comprising:
• an upper central body:
• upper rotor arms projecting radially outward from the upper central body to a distal end to form the multi-ray star shape;
• and
• upper rotor poles, wherein each of the upper rotor poles is located at the distal end of each of the upper rotor arms, the upper rotor poles being oriented perpendicular to the upper rotor arms, such that the upper rotor cup is cup shaped, wherein the upper rotor poles extend and maintain the multi-ray star shape perpendicularly from the upper rotor arms, and wherein each of the upper rotor poles are circumferentially separated from each other due to the multi-ray star shape;
• and
• a lower rotor cup comprising:
• a lower central body:
• lower rotor arms projecting radially outward from the lower central body to a distal end to form the multi-ray star shape;
• and
• lower rotor poles, wherein each of the lower rotor poles is located at the distal end of each of the lower rotor arms, the lower rotor poles being oriented perpendicular to the lower rotor arms, such that the lower rotor cup is cup shaped, wherein the lower rotor poles extend and maintain the multi-ray star shape perpendicularly from the lower rotor arms, and wherein each of the lower rotor poles are circumferentially separated from each other due to the multi-ray star shape,
• wherein electromagnetic torque is produced by the multi-ray star shape formed by the upper rotor arm and the multi-ray star shape formed by the lower rotor arms, the electromagnetic torque is produced in response to the magnetic flux,
• wherein the upper rotor poles are aligned with the lower rotor poles, and
• wherein the upper rotor poles are connected to the lower rotor poles to enclose the stator assembly within the multi-ray star shape of the rotor assembly.