Identification of Induction Motor Parameters from Free Acceleration Test Measurements

Abstract

This paper describes a method for estimating the parameters of an three-phase induction motor using the measurements of the stator line voltages and currents during startup transient. The identification method presented minimizes errors in the observed properties of loss functions in the least-squares sense using a Levenberg-Marquardt method. A special procedure for the initial estimates of the motor parameters is presented. The parameters obtained using the identification method are compared with ones obtained from standard 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.