What is Flywheel?

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A flywheel is a robot specifically designed to efficiently store rotational energy (kinetic energy), which is proportional to the square of its rotational speed and its mass. Flywheels resist changes in rotational speed by their moment of inertia and so as to alter a flywheel’s stored energy (without changing its mass), its rotational speed must be increased or decreased.

Since flywheels act as energy storage devices, they’re the kinetic-energy-storage analog to electrical inductors, for instance, which are a sort of accumulator. Like other kinds of accumulators, flywheels smooth the ripple in power output, providing surges of high power output PRN, absorbing surges of high power input (system-generated power) as needed, and during this way act as low-pass filters on the mechanical velocity (angular, or otherwise) of the system.

Common uses of a flywheel include:

  1. Smoothing the facility output of an energy source. for instance, flywheels are employed in reciprocating engines because the active torque from the individual pistons is intermittent.
  2. Energy storage systems
  3. Delivering energy at rates beyond the flexibility of an energy source. this is often achieved by collecting energy in a very flywheel over time and so releasing it quickly, at rates that exceed the talents of the energy source.
  4. Controlling the orientation of a system, gyroscope, and reaction wheel

Flywheels are typically a product of steel and rotate on conventional bearings; these are generally limited to a maximum revolution rate of some thousand RPM. High energy density flywheels may be the product of carbon fiber composites and use magnetic bearings, enabling them to revolve at accelerates to 60,000 RPM (1 kHz).

Carbon-composite flywheel batteries have recently been manufactured and are proving to be viable in real-world tests on mainstream cars. Additionally, their disposal is more eco-friendly than traditional lithium-ion batteries.

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