Control analysis of a bi-motor electric traction system for energy and performance optimization

Energy Consumption Analysis for an Ev Powertrain Using Three BLDC Identical Motors

“…13. The best efficiency with this powertrain is obtained for an optimal load repartition among the motors [29]. In the case of a powertrain with three identical motors, the optimal efficiency is obtained when each motor produces one-third of the total torque.…”

“…The vehicle's frontal area is 0.95 m 2 , and the aerodynamic drag coefficient is 0.46. In [34] is explained how the speed profile of the testing cycle is transformed into a tractive effort profile required for the powertrain. The tractive effort coefficient is considered 0.8, enabling the calculation of the maximum tractive effort supported by the wheels when conserving the ground adherence.…”

“…Fv is the viscous friction coefficient provided in the motor characteristics. The methodology for computing these coefficients presented in [34] was implemented using MATLAB. The power losses are represented in Fig.…”

“…Precedent studies showed that applying phase advance and dwell control [25] and different control methods [26][27][28] can improve the BLDC performance, mainly increasing the motor efficiency and its no-load speed. Approaching the production of mechanical power to the wheels, using multiple motors, can generate efficiency and performance [29]. But the optimal repartition of the torque between multiple motors [30][31][32][33] represents a question of vehicle stability [34].…”

“…Approaching the production of mechanical power to the wheels, using multiple motors, can generate efficiency and performance [29]. But the optimal repartition of the torque between multiple motors [30][31][32][33] represents a question of vehicle stability [34]. Therefore, the power distribution among electric motors and the powertrain efficiency remain important in designing mobility solutions [36,37].…”