Institusion
Institut Teknologi Perusahaan Listrik Negara
Author
Syamsuddin, Zaky
Pratama Putera, Rizki
Subject
Teknik Elektro
Datestamp
2022-11-07 03:13:27
Abstract :
Regenerative braking on conventional electric vehicles utilizes the battery as a load in the
braking phase to create reverse electric torque which will slow down the vehicle. This
method has the disadvantage that the amount of braking torque depends on the maximum
charging current of the battery. This final project examines a regenerative braking system
using an ultracapacitor as a reverse electric torque-producing load that creates a
slowdown in the rotation of the driving motor (BLDC/Brushless DC). The regenerative
braking trial using ultracapacitors was carried out on a laboratory scale test model by
varying the rotational load or inertia and the number of parallelized capacitors, which will
see the effect on the amount of regeneration energy and braking torque that occurs. The
load variations are 2.5 Kg, 3.75 Kg and 5 Kg, speed variations of 600 RPM, 700 RPM
and 800 RPM and variations of single, parallel ultracapacitor configuration. From the test
results obtained the highest current, voltage and braking values at a load variation of 2.5
Kg with a speed of 800 RPM and one ultracapacitor with a successive value of 1.57
(m/s2), 5.8 mA and 7.87 V. As for the highest energy of 0.2091662 Joule obtained from
a load variation of 5 Kg with a speed of 800 RPM and parallel ultracapacitor. In addition,
it is also known that the highest deceleration torque, on average, was obtained in the test
with the lowest load mass, namely 2.5 Kg. From the overall test results, it can be observed
and concluded that the retarding torque is influenced by the maximum regeneration
current that can be achieved, where the value is influenced by the type of capacitor and
the regeneration voltage. So that the effective deceleration is only seen at low load inertia
and less significant at high load inertia.