A Parameterization of 6-Port High-Frequency Delta- and Star-Connected Induction Motor Model

Abstract

In some of the adjustable speed drive (ASD) common-mode (CM) prediction models, the high-frequency (HF) motor model needs additional features, for instance, the mutual inductance between phases and the symmetry of single-phase concerning the beginning and ending points. In this paper, a universal HF delta- and star-connected three-phase motor model is presented. The three-phase HF motor model is acquired from CM and differential mode (DM) equivalent circuits, which are extracted from CM and DM measurements of the motor. The obtained three-phase HF induction motor model can be connected as a star and delta configuration in the simulation. The proposed model allows identification with good accuracy up to 200MHz. The method is verified with two induction machines, which have 3kW and 11kW rated powers.