Automotive algorithm implemented in the microcontroller for adapting regenerative braking

In this paper an original adaptive method for maximizing the energy transferred to the car's battery during regenerative braking is presented. The paper is based on a simulation in Proteus LabCenter, using a battery model, based on functional criteria, with the energy recovered from a reversible motor. The battery management algorithm was implemented on ATMEGA 328 microcontroller, and a MC34063 DC-to-DC converter control circuit. The voltage variations of reversible motor, recovered during braking are simulated with a variable voltage applied on the system input and the results show that the output voltage of the DC-to-DC converter must be continuously adjusted during the braking process. The efficiency lies in the fact that although the braking sequences do not take place for long periods, they are made at currents recovered from magnetic induction of considerable values.