Didactical Platform for Multi-Motor Solutions in Electric Vehicles

Abstract

For electric vehiclepowertrains,many activities are performed using simulation of different components and sub-systemsand the research and teachingprocess uses successfullydifferenttools.Followingthis way, expensive physical elementsare avoided,and multiple configurationscould be studied,beforegoing to the next step.To capitalize on the virtual results, aphysical testisnecessary, even if itis performed on a reduced scale. Thispaper presentsa didactical platformfor multi-motor solutions inelectric vehicles, aplatform which can serve alsofor research activities related to analysisand control of electric powertrainswith at least two motors.

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

“…A vehicle configuration with a single motor is used to perform an initial study. For simplification, the mechanical transmissions presented in [20], which are used in the current model, are considered to have no losses.…”

“…Therefore, the architecture of new vehicles should be adapted to integrate multiple electric motors [7,8]. Future specialized engineers must be formed to conceive such systems [9]. The efficiency of the electric motors is in the middle of the efficiency chain of the EV powertrains.…”

“…Diverse research continues to find solutions for better performance [10][11][12][13][14][15][16][17][18][19]. In the actual analysis, the method presented in [20] is detailed in a new specific case of efficiency maps constitution, continuing the experience in previous research [21][22][23][24].…”

“…Therefore, the power distribution among electric motors and the powertrain efficiency remain important in designing mobility solutions [36,37]. The current investigation is based on precedent experiences in simulation [38] and experimental measurements [9]. Several methods can be used to control energy efficiency [39,40].…”

“…In the new configuration, the vehicle has two motors operating individually on each rear wheel and another on the front axle. The efficiency maps from [20] analyze each motor's contribution to the mechanical power supplied to the wheels. A specific procedure integrating analytic calculations, simulations, and physical measurements is used to analyze the three-motor powertrain.…”