Control of Three Phase BLDC Motor for Electric Vehicles by using Four Quadrant Operation
In this paper the four quadrant operation implemented for the recovery of electric vehicles. BLDC motor is used in EV, and bi-directional DC-DC converter is connected to the VSI (voltage source inverter). Bi-directional DC-DC converter performed to modes that is, buck mode and boost mode, energy is recovered through this mode. In buck mode utilized the energy for drive the motor and in the boost mode regeneration of energy and charged the battery. This proposal operated in MATLAB\Simulink software. By using this method we can improve the energy management of electric vehicles when vehicles in motoring mode bi-directional converter did buck operation and utilized energy for driving vehicles. During electric vehicles often start and stop, this operation proposes recovery of kinetic energy of motor and stored it in battery through the regenerative braking. Through electric vehicles going on downhill, drive speed develops more than reference speed, controlled speed offer energy and this energy return to battery.