WELCOMEBy;PraveenRanjanSoumen

Regenerative braking system

A regenerative brake is an energy recovery mechanism which slows a vehicle or object down by converting its kinetic energy into another form.

WHAT IS REGENERATIVE

BRAKING SYSTEM???

First, a quick review: you are driving a car, the

energy from the fuel goes into four main places:•Accelerating the car up to its cruising speed•Air resistance•Rolling resistance•Heat. The engine has to convert that heat into motion.

Types of regenerative braking systems:

Electric energy storage

Compressed Gas energy storage

Flywheel energy storage.

This system engages an integrated motor-generator which is connected to the spinning wheels.

The motor slows down the car and converts the motion into electrical energy, which is stored in batteries.

These systems can capture and return around 50% of the energy lost in braking

•Electric energy storage

This system engages a clutch which transfers the mechanical energy of motion into a single spinning disc called a flywheel. When you brake the car the flywheel gets spun up. When you want to accelerate the flywheel is connected to the wheels and the energy from the flywheel can get you started.These systems can capture and return around 70% of the energy lost in braking.

Flywheel energy storage

This system engages a pump which forces water into a tank.

This converts the mechanical energy of motion into hydrostatic energy.

These systems can capture and return around 70% of the energy lost in braking2.

Hydrostatic energy storage.

When braking, the variable axial piston unit converts kinetic energy into hydraulic energy and pumps hydraulic fluid into a bladder accumulator filled with Nitrogen

During acceleration the pressurized hydraulic fluid in the accumulator drives the variable axial displacement unit, which then works as a motor

•Benefits:

- Full use of the energy recovery potential.- Optimal for hybrid vehicles as well as

electric and  fuel cell vehicles

- The basic concept and the proven components of the

  conventional brake are mostly retained- Optimum pedal feel selectable by the

vehicle  manufacturer

- Low noise, almost no pedal vibrations in ABS mode

- Improved crash behavior- Networking adaptability to further

vehicle control  systems

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