Parameter Sensitivity Analysis of Induction Motor Sensorless Control using Adaptive Full-Order Flux Observer

초록

When the induction motor is under sensorless control using the adaptive full-order flux observer, the effect of parameter errors needs to be analyzed. In this paper, an analytical approach is presented which includes all types of parameter errors under adaptive full-order flux observer. Especially, the torque reference and rotor speed, commonly regarded as typical operating conditions in motor drive, are chosen as input of the analysis instead of slip frequency and rotor speed in conventional research. As a result, the steady state speed and torque error in all operating points under various parameter errors can be easily calculated instead of performing time-consuming simulations and experiments. The proposed analysis method is verified through simulations and experiments. © 2025 Korean Institute of Electrical Engineers Electrical Machinery and Energy Conversion Systems Society.