Regenerative
braking (RBS) is a type of kinetic energy recovering system that can convert
the kinetic energy of a moving object into energy that can be stored to slow
the vehicle down. It is mostly applied into hybrid cars, electric cars or trains
nowadays. The regenerative braking can also increase the fuel efficiency of the
vehicle.1 In the vehicle, the
regenerative braking systems are installed on the drive train of the vehicle or
installed on the drive wheels. The drive wheels inhibit the motion of the
wheels by using the mechanical torque and the magnetic field. Thus, allowing
energy to be generated under the braking, other than the friction of the brakes
wasting energy away in the form of heat energy. This idea of the brake can take
the kinetic energy that it absorbs and turn it into potential energy for later
use has been around since the 1800s. One of the early idea of this systems, is
that they install springs types of regenerative brake systems on the front of
the wheels of the bicycle.

         RBS are implemented to vehicles today
because of the many advantages of the RBS. The RBS able to increase efficiency
and reduce the wear on the vehicles brake. When the motor is not receiving any
power from the battery, it starts to resist the turning of the wheel, thus
capturing the energy of the motion just like a generator and it can generate
the energy to the battery. In a conventional mechanical brake, lessening the
wear and by extending the brakes life is not viable. This will reduce the use
of the brake. Other than that, hybrid and full electric vehicles produce less
to non-carbon dioxide gas emissions to the environment. In addition to this,
the RBS will also help in fuel economy in hybrid vehicles as they can recharge
the battery when it is needed to. The RBS still has its downs, when driving in
a busy city. The driver will spend some good amount of time braking. The
vehicle will use up quite some fuel in the city for each kilometre it travels
than on a highway. This is because of the law of thermodynamics, that
inefficiency come from heat generation. When braking the brake disc and brake
pad will produce heat. That heat will disperse into the surrounding. Moreover,
heat energy has higher entropy meaning it is less ordered.

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