Impedance analysis of squirrel-cage induction motor at high harmonics condition

Aleksandr Skamyin (Saint Petersburg Mining University)
Yaroslav Shklyarskiy (Saint Petersburg Mining University)
Kirill Lobko (Saint Petersburg Mining University)
Vasiliy Dobush (Saint-Petersburg Mining University)
Tole Sutikno (Universitas Ahmad Dahlan)
Mohd Hatta Jopri (Faculty of Electrical and Electronic Engineering Technology, Universiti Teknikal Malaysia Melaka)

Indonesian Journal of Electrical Engineering and Computer Science
Vol 33, No 1: January 2024

This study examines different methodologies for representing an asynchronous motor at higher harmonics by utilizing its equivalent circuit. Several approaches were compared based on simulation modeling. An experimental investigation was conducted in a laboratory setting using asynchronous electric motors with power ratings of 1.5 kW and 5.5 kW. The purpose of this investigation was to examine the characteristics of impedance in the presence of high-harmonic conditions. The generation of higher harmonics was achieved through the utilization of a precisely regulated thyristor rectifier in conjunction with a thyristor power controller. The findings indicate that the load on the shaft solely impacts the resistance at the fundamental harmonic, while the resistance at higher harmonics remains unaffected by the operating mode of the asynchronous motor (AM).