Regenerative braking systems (RBS enhance energy efficiency and range in electric vehicles (EVs) by recovering kinetic energy during braking for storage in batteries or alternative systems.
How does a braking system work?
When the braking system is applied, the electric machine operates in generator mode, reversing the direction of torque and energy flow, thereby transforming mechanical energy into electrical energy (indicated by the green line). The energy transferred to the battery is regulated by the Battery Management System (BMS).
How regenerative braking works?
When braking, the vehicle with the regenerative braking system can convert part of the kinetic energy into chemical energy or mechanical energy storage. The main components of energy flow include the battery, UC, DC converter, motor, reducer, drive shaft and half shaft.
Regenerative braking modeling, control and simulation of a hybrid energy storage system for an electric vehicle in extreme conditions IEEE Trans Transportation Electrification, 2 ( 4) ( 2016), pp. 465 - 479 A survey on hybrid energy storage system for EV with regenerative braking
How kinetic energy is transferred to energy storage system in regenerative braking?
The electric energy of energy storage system is transformed into kinetic energy by motor, gearbox and differential during acceleration. When regenerative braking, kinetic energy is transferred to energy storage system through the opposite process.
What is a regenerative braking system (RBS)?
Multiple requests from the same IP address are counted as one view. Regenerative braking systems (RBS enhance energy efficiency and range in electric vehicles (EVs) by recovering kinetic energy during braking for storage in batteries or alternative systems.
Based on the established model and energy flow analysis above, the effective storage power function under braking condition is defined as (19) where is the average terminal voltage of battery, is the average terminal voltage of UC. Substitute (20) and (21) into (19), it can be derived that (22) where, and .