Regenerative method of braking of an electric vehicle (EV) helps in efficient utilization of the battery power to increase the range of the vehicle. Methods described in literature for the regeneration use complex control algorithms to deal with the energy flow during the transition from the motoring mode to the regenerative braking mode of PM BLDC motor driven EV. In this paper, a simple method to control the power flow from the motor to the battery by changing the switching sequence given to the inverter used in the PM BLDC motor drive is presented. The newly presented method gives lower braking time and higher regeneration, and also does not necessitate any additional converters or ultra-capacitors.
- Electric two wheeler
- Electric vehicle (EV)
- Hub motor
- PM BLDC Motor
- Regenerative braking
The line back-EMF based regeneration method presented in this paper delivers far better performance than the mechanical braking in two-wheeler EVs also. Further, the presented method is the simplest one among the known regenerative methods in terms of the simplicity of the system, ease of implementation and also the higher braking torque developed. In this method, a noticeable power is fed back to the battery. The range of the EV is obviously increased.
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