Regenerative Braking

Einstein once said "Energy cannot be created or destroyed, it can only be changed from one form to another" and this is true for brakes too, where wheel kinetic energy wastes to heat energy as a result of friction. In this project idea we will discuss how we can transform this energy to something useful.Regenerative breaks are similar to eddy current brakes which are used for generating electricity or heat through electromagnetic induction.
What is regenerative braking?
A regenerative brake is an energy recovery mechanism which slows a vehicle or object down by converting its kinetic energy into another form, which can be either used immediately or stored in battery until needed.

Why to use Regenerative Breaking?
We should use it because it is simple to use but extremely beneficial. It works on the concept of turbine generator where turbine is connected to gearbox which is attached to motor. When we rotate the turbine, it starts to rotate motor through gearbox. This motor then supply current to controller which further transferred to Battery.

Wheel => Gearbox => Motor=> Controller => Battery

Where it is used now?
It is used in almost all hybrid vehicles available in the market. In trains too, eddy currents are used to use kinetic energy of brakes.

Before discussing any further about this project, we must know about the AC currents and how they are generated?

Alternating Current or AC currents generated when conductor cuts through magnetic flux(it can be measured with flux-meter) lines of North South Pole magnet.When we push the brake,  Armature which is connected to crankshaft using serpentine belt( belt that drives all components that rely on crankshaft power) starts to rotate. Armature is a single loop conductor and has two roles;first to cut the Magnetic Flux to generate current and second to transfer this current to slip ring that is why it needs to be good conductor always.

When conductor cuts through magnetic flux lines, voltage is induced into the conductor which causes current to flow.Direction of current is decided by Left hand rule as shown in figure

Slip ring mounted on a shaft to which each of the wire connected.allows the transmission of power and electrical signals from a stationary to a rotating structure.
Brushes on which slip rings ride to enable current to be carried to the circuit that uses AC Current.
Alternators are typically found near the front of the engine and are driven by the crankshaft, which converts the pistons' up-and-down movement into circular movement.





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