A New Speed Estimation Scheme of the Induction Motor Considering the Flux Saturation

초록

The control performance of the induction motor depends on the machine parameters because the control blocks are made up of machine parameters and control gains. Especially in case of the speed sensorless control, the rotor flux and the rotor speed can be obtained indirectly by using the parameters. When the rotor flux of the induction motor is saturated, the estimtion performance for the rotor speed may be deteriorated due to the non-linear variation of the mutual inductance. The reactive power model of the induction motor is used to estimate the induction motors.