IIT Madras Researchers create techniques to improve the slowing down (brake) performance of electric vehicles. This research could help in executing a slowing mechanism(braking system) in Electrified Vehicles, which can improve the halting distance and ride comfort in the sight of regenerative slowing down. Although such plans have been created for lighter street vehicles, there is a need of systems through which the slowing down of weighty or heavy street vehicles, (for example, transports and trucks) can be improved through ‘regenerative braking.’
This research was driven by Prof. C. S. Shankar Ram, Department of Engineering Design, IIT Madras, and his PhD student Dr. V. S. Kesavan who investigated different procedures to study and fuse the impact of various special attributes of ‘friction brake’ and ‘regenerative brake’ on the vehicle’s braking down performance. The consequences of their research have been distributed in the presumed peer-evaluated Journal Vehicle System Dynamics.
There are two braking mechanisms that are being used in electric vehicles, specifically:
Friction based Braking System’
In traditional fossil fuel-based heavy street vehicles the force or the power that the driver applies on the brake is used to control a pneumatic framework whose give power is used to stop the vehicle utilizing friction braking. The kinetic energy of the vehicle because of its moving state is changed over to warm energy. In this way, a piece of the energy got from consuming the fuel is squandered as warmth energy scattered during friction slowing down.
Regenerative Braking System’
In electric vehicles, arrangement is m-ade to decrease this energy loss by utilizing another braking mechanism called ‘Regenerative Braking System.’ In this, when the driver presses the brake foot pedal, a segment of the active energy because of the development of wheels is changed over into electrical energy that gets put away in the battery and is accessible for use in future driving. Be that as it may, the greatness of regenerative slowing down is deficient to stop the vehicle under all conditions since regenerative slowing down alone can’t regularly give high deceleration.
Consequently, in electric vehicles both friction and regenerative slowing down ought to be utilized in a co-operative way to guarantee energy preservation and halting the vehicle inside a sensible distance.
Result of Research Conducted
For this investigation, the group of researchers attempted to see how slowing down execution is influenced when these two stopping mechanisms are applied together or successively in substantial street vehicles. They further assessed how slowing down execution is influenced when the regenerative brake is turned off quickly and steadily. They examined the impacts of these techniques on both loaded and unloaded street vehicles and thought about two sorts of streets, i.e., dry and icy.
It was discovered that, on a dry street, co-operated braking down (with regenerative slowing down just as friction slowing down) decreases the vehicle halting distance by 2.1 m (about more than the half of a vehicle’s length) contrasted and customary slowing down (erosion slowing down alone) for a completely loaded vehicle.
Further, it was discovered that when the regenerative slowing down was turned off steadily, the impact of various powerful attributes of grinding brake and regenerative brake decreases the level of flashing variety in the longitudinal deceleration by 80%, in the pitch movement by 79%, in the suspension avoidance by 87% and in the wheel slip proportion by 90% contrasted and momentary switch-off.
They further assessed how slowing down execution is influenced when the regenerative brake is turned off quickly and step by step. They examined the impacts of these procedures on both loaded and unladen weighty street vehicles and thought about two sorts of streets, i.e., dry and cold. Different systems were assessed through suitable investigations acted in a Hardware-in-Loop test arrangement outfitted with ‘IPG TruckMaker®’, a financially utilized vehicle dynamic reproduction programming.
Why this is a boon
A urgent part here is the choice on how the two braking mechanisms ought to work to guarantee that the vehicle stops inside a sensible distance and without any jerks experienced during the move between the two slowing mechanisms for great ride comfort.
Future of the Research Conducted
The research group is wanting to additionally expand the results of this research to know the effect of regenerative braking down switch-off during kinetic and active braking down control in security frameworks, for example, non-freezing braking framework and electronic security control framework.
The researchers expect that the vehicle dynamic performance during active slowing down control would improve because of the smooth unique change between friction braking and regenerative braking, which would help in the suitable plan of dynamic security design for charged vehicles.
These give better driver slowing down feel, ride solace and vehicle dependability. Thus, the procedures created by this examination will guarantee that one can get great ride comfort alongside satisfying wanted brake need and is hence significant for thought by the electric vehicle market.
