Examples include a wheel generator, namely a converter for obtaining electrical energy in a rolling wheel of a vehicle from the deformation of the wheel tyre due to contact with the road surface, a system for obtaining electrical energy comprising the converter, as well as a vehicle or wheel including the system.

A system, apparatus, and method are provided through which deformation of a tire of a vehicle is used to push air or hydraulic fluid through a piston, which is used in the generation of energy for the vehicle. The tire deformation causes a piston arranged in the tire to push air through an air line, which supplies the compressed air to a fan attached to an alternator for battery charging.

A wheel assembly configured to be rotationally engaged with a supported structure, the wheel assembly having a light up wheel hub having a light up ring, the light up ring having at least one light emitting device and a generator body configured to be in electrical communication with each light emitting device and an outer shell configured to be engaged with the light up ring, such that each light emitting device is enclosed within the outer shell, wherein the rotation of the light up wheel hub about a wheel rotational axis is configured to generate electrical energy to power each light emitting device. Thus an advantage is that each light emitting device may be sealed within the outer shell, protecting it from debris, fluids and other hazards. The light up wheel hub may be configured to engage with sinusoidally shaped wheel rims through selective adjustment of light emitting device positioning.