An Electric Braking Scheme for a BLDC Motor Driven Electric Vehicle

This paper proposes an electric braking scheme for a brushless DC motor driven electric vehicle. This electric braking scheme is developed by combining various regenerative braking methods and plugging. At first, the speed profile and battery current profiles of each braking methods are studied during braking. It is observed that the speed reduction by plugging is very fast and by single and two switch method is slow, while regeneration occurs only in single and two switch methods. Based on these results, a new braking scheme is developed by combining these braking methods and it is switched among them based on the brake force applied by the driver. Simulation results are presented to validate the proposed technique.