A flywheel is a heavy rotating body that acts as a reservoir of energy. The energy is stored in the flywheel in the form of kinetic energy.

The functions of the flywheel are as follows:

• (i) To store and release energy when needed during the work cycle
• (ii) To reduce the power capacity of the electric motor or engine
• (iii) To reduce the amplitude of speed fluctuations

The flywheel acts as an energy bank between the source of power and driven machinery.

Flywheel Materials

The materials used for the manufacturing of flywheels are listed below.