Speed Estimation Strategy During Three-Phase Induction Motor Starting Using Park Transform

This paper presents a strategy for speed estimation during the starting of three-phase induction motors from the stator current measurement. The estimation is performed by tracking the components at the rotational frequency present in the current Park's vector. This tracking is performed using the short time Fourier transform. Simulation and experimental results of a 5.5 kW induction motor are presented to validate the proposal.