Analysis of the Wheel Steering Influence on Energy Consumption of an EV PMSM In-Wheel Propulsion System

A light EV (Electric Vehicle) with two frontal in-wheel permanent magnet synchronous motors (PMSM) is analyzed from the perspective of steering angle integration in parallel with a speed cycle. Considering the given vehicle dynamics requirements, an analysis of the powertrain operating points compared to the operational area of the vehicle is performed. Under specified constraints depending on speed, a steering angle profile is generated and integrated in the analysis. Lateral forces resulting from the steering angle profile implementation are investigated from the sideslip risk point of view. The analysis implies rigorous speed control for each in-wheel motor implemented with a dedicated individual speed controller. Custom models are analyzed and verified by simulations, thereafter validation is performed using a physical testbench. The motor shaft speeds and currents absorbed from the DC source are supervised during the analysis. The powertrain energy consumption is determined after performing the testing cycle without and in parallel with the steering angle cycle.