Mbackup flywheel power supply
View Patent ↗A flywheel system includes a synchronous reluctance and a permanent magnet generator.
1. A flywheel system comprising:
a rotatable assembly including a flywheel mass and variable speed synchronous reluctance motor-generator rotor;
the flywheel mass and the synchronous reluctance motor-generator rotor located between upper and lower supports;
the flywheel mass and the synchronous reluctance motor-generator rotor having a single, substantially vertical axis of rotation;
the flywheel mass constrained to rotate in synchrony with the synchronous reluctance motor-generator rotor;
a substantially non-magnetic part of the rotatable assembly defining a cavity therein;
the cavity housing first and second abutting permanent magnets;
a first fixed assembly including a first electrical stator adjacent to the cavity;
a second fixed assembly including a second electrical stator adjacent to the synchronous reluctance motor-generator rotor;
the upper support bearing the weight of the second electrical stator;
a containment enveloping the rotating assembly and the first and second fixed assemblies;
the flywheel system operable to supply an external load with electric power from the second stator; and,
the flywheel system operable to supply a load critical to safe flywheel system operation with electric power from the first stator.