E-Motor Controls

The e-motor is the core of an electric vehicle. Thereby, both its energy efficiency and its power capability room largely. Background noise, torque and power unfolding as well as weight characterize the motor. Therefore, we search for innovative solutions to continuously improve the parameters above. The control system of the electric engine also plays a significant role. In the development of this regulation, we apply a model-based approach. The software architecture represents a modular and expandable concept. Aim of the field-oriented regulation is to enable high dynamics and efficiency together with automotive functional requirements. Diagnosis, safety and fail-safe redundancies are obtained. Some functional examples are listed below:

  • Field oriented control  (FOC)
  • Zero point adaptations of the sensor technology
  • Four-quadrant operation
  • Variable PWM-frequency
  • Sensor-less control system
  • PSM- and ASM-variants
  • Online computed temperature model
  • Automotive diagnosis capabilities
  • Dead time compensation
  • Torque and engine speed control system, voltage control