What is a high-temperature superconducting flywheel energy storage system (sfess)?

A high-temperature superconducting flywheel energy storage system (SFESS) can utilise a high-temperature superconducting bearing (HTSB) to levitate the rotor so that it can rotate without friction [ 1, 2 ].

What is superconducting energy storage Flywheel?

The superconducting energy storage flywheel comprising of magnetic and superconducting bearings is fit for energy storage on account of its high efficiency, long cycle life, wide operating temperature range and so on.

What is flywheel energy storage?

Flywheel energy storage (FES) can have energy fed in the rotational mass of a flywheel, store it as kinetic energy, and release out upon demand.

What are superconducting magnetic bearings?

Superconducting magnetic bearings support a heavy rotating flywheel with an electromagnetic force in a non-contact state. The advantages of the superconducting bearings are lower rotational losses and smaller maintenance costs compared to conventional mechanical bearings.

How does FES technology affect energy storage and flywheel specific energy?

The key factors of FES technology, such as flywheel material, geometry, length and its support system were described, which directly influence the amount of energy storage and flywheel specific energy.

How does a high-speed rotating flywheel work?

The high-speed rotating flywheel drags the motor to generate electricity, which can output the current and voltage suitable for the load by the power converter. So, the mechanical kinetic energy stored in the flywheel (or rotor) is converted into electrical energy. In this process, the speed of the flywheel continues to drop.