Methods and systems for flywheel-based high-power electric vehicle charging

A system for storing input power and providing output power, the system comprising:

• a controller configured to be electrically coupled to an alternating current power source and a load, wherein the controller is configured to convert AC power to DC power for delivery to the load;
• an alternating current motor electrically coupled to the controller, the motor having a rotor and being configured to receive AC power from the power source through the controller;
• and
• a flywheel mechanically coupled to the rotor external to the motor, the flywheel being configured to mechanically store power received from the power source through the motor.

A system for storing input power and providing output power, the system comprising:

• a controller configured to be electrically coupled to an alternating current power source and a load, wherein the controller is configured to convert AC power to DC power for delivery to the load at a first level;
• a line start synchronous alternating current motor configured to be electrically coupled to the alternating current power source, the motor having a first rotor and being configured to receive AC power from the power source at a second level, wherein the second level is lower than the first level;
• a flywheel mechanically coupled to the first rotor external to the motor;
• and
• a synchronous alternating current generator having a second rotor mechanically coupled to the flywheel, the generator being configured to be electrically coupled to the controller for supplying power to the load, wherein the generator is configured to supply AC power to the controller.