Abstract
A small-signal model is derived for saturated induction machines. Inductances are allowed to saturate as a function of their own current (or flux), and the mutual saturation effect originating mainly from skewed or closed rotor slots is also included in the model. The model fulfills the reciprocity conditions, and it can be applied to parameter identification and to the analysis and development of flux-angle estimation methods. As application examples, the parameters of a 2.2-kW induction machine were identified using the data obtained from time-stepping finite-element analysis and locked-rotor measurements. The proposed model fits well to the data, and the fitted parameters are physically reasonable.
| Original language | English |
|---|---|
| Pages (from-to) | 965-973 |
| Journal | IEEE Transactions on Industry Applications |
| Volume | 46 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 18 May 2010 |
| MoE publication type | A1 Journal article-refereed |
Keywords
- closed slots
- induction motors
- magnetic saturation
- motor models
- reciprocity
- rotor skew
- signal injection