The induction machine model parameters need to be estimated with good accuracy to ensure a good performance of the drive. Due to the magnetic saturation, the inductances vary as a function of the flux level. The magnetizing curve can be identified at standstill, but more accurate results are obtained if the identification is performed as the machine is running. In this paper, the magnetic saturation is modeled using a power function, and adaptation laws for the function parameters are proposed. The adaptation method is implemented in the control system of a sensorless drive. Experimental results on a 2.2-kW machine show that the identification of the stator inductance is rapid and the accuracy is good.
|Journal||IEEE Transactions on Industry Applications|
|Publication status||Published - 7 May 2013|
|MoE publication type||A1 Journal article-refereed|
- Induction motor
- Magnetic saturation
- Parameter estimation
- Sensorless control