Identification of Induction Motor Parameters from Free Acceleration and Deceleration Tests

Abstract

In this paper, a new step-by-step approach to identify the parameters of an induction machine combining free acceleration and deceleration transient data is presented. The measurement of the stator line voltages and currents is required only. The free acceleration torque characteristic is used in order to identify the inertia and to avoid the influence of the harmonic fields effect on the identification accuracy. The rotor resistance is identified from both free acceleration and deceleration transients data, and in that way the skin effect factor is determined. The identification results are compared with the motor parameters obtained by performing locked-rotor and no-load tests.

Marin Despalatović

Full Professor | Department of Electrical Drives and Industrial Control

Full professor at the Faculty of Electrical Engineering, Mechanical Engineering, and Naval Architecture in Split, where he teaches courses Electric Machines, Electric Drive Systems, and Electromechanical System Modeling. His research focuses on power systems, energy storage, and smart grid technologies, with active participation in multiple national and international projects aimed at advancing energy infrastructure and improving system stability.

Božo Terzić

Full Professor | Department of Electrical Drives and Industrial Control

Full professor at the Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture in Split, with significant contributions in the field of industrial development projects including the design of prototypes of electronic converters used in industrial plants around the world. His research interests are focused on the application of electronic converters in electric drives and renewable energy sources.