Angle-dependent identification of PMSM HF parameters with large bandwidth based on switching harmonics of a 2-level inverter

This paper presents a new method for identifying high frequency machine parameters using the current- and voltage harmonics of a voltage source inverter. By utilizing existing excitations, an additional test signal can be omitted. This reduces the implementation effort and increases the maximum evaluation frequency to 100 kHz and therefore by a factor of 50 compared to existing methods.
Due to the high bandwidth of the switching harmonics, the identification can be carried out at several frequencies at the same time, providing a simple and yet powerful method for angle-dependent parameter identification with high bandwidth.