The flywheel body is the core component of the flywheel energy storage
system, which aims to improve the maximum angular velocity of the rotor, reduce
the weight of the rotor, and maximize the energy storage of the flywheel energy
storage system. It is often made of carbon fiber materials.
Working principle of flywheel energy storage
The flywheel energy storage system is an energy storage device that
converts electromechanical energy, breaking through the limitations of chemical
batteries and achieving energy storage through physical methods. By using an
electric/power generation bidirectional motor, the electrical energy is
converted and stored with the mechanical kinetic energy of the high-speed
running flywheel, and is connected to different types of loads through frequency
modulation, rectification, constant voltage, and interfaces.
When storing energy, the electrical energy is converted through an electric
converter to drive the motor, which drives the flywheel to accelerate and
rotate. The flywheel stores energy in the form of kinetic energy, completing the
energy storage process from electrical energy to mechanical energy. The energy
is stored in the high-speed rotating flywheel body; Afterwards, the motor
maintains a constant speed until it receives a control signal for energy
release;
During energy release, the high-speed rotating flywheel drives the motor to
generate electricity, which is then converted into electrical energy through a
power converter to output current and voltage suitable for the load, completing
the process of converting mechanical energy into electrical energy for energy
release. The entire flywheel energy storage system realizes the input, storage,
and output process of electrical energy.
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