For an optimum control, the magnetic flux is calculated in real time depending on all required controller variables such as temperature, voltage, current, speed, or torque using a special physical model. As a result, the rotor resistance is also known depending on the temperature, among other things.
This highly dynamic calculation of the motor flux is implemented with the special FPGA-based controller cascade from ARADEX, which is what makes real-time calculations possible in the first place due to its speed and deterministic processes.
These basic principles make it possible to almost completely compensate for the strong temperature-dependent effects in an asynchronous motor and considerably increase the efficiency.