Development of Simulation Model of Driving Motor and Controller for Electric Vehicle

In this study, a driving v model for electric vehicle and a controller model for controlling the motor were developed. The driving motor is of the interior permanent magnet synchronous motor (IPMSM) type based on the d/q axis voltage equation and torque equation, and includes a coordinate conversion module to convert the inputted three-phase voltage to the d/q axis. The controller model is designed to generate d/q axis current corresponding to the torque command through a torque ma and current phase angle map, and a feedforward compensator was included in the current controller model to improve current response. Furthermore, because a voltage constraint occurs at 3,500 rpm, weak field control was performed to control up to the maximum speed. To verify the performance of the developed model, the maximum speed of 11,000 RPM and the maximum torque 350 Nm which were the target performance were confirmed through simulation.