Abstract
In this paper, reduced-order observers for flux and speed estimation of sensorless induction-motor drives are analyzed. All gain selections, which give stability for all operating conditions, including the regeneration mode (called complete stability), are found. Furthermore, it is shown that full-order observers, under the assumption of fast stator-current dynamics, have equivalent implementations as reduced-order observers. Consequently, all gain selections of the full-order observer gains for which complete stability is obtained, under the assumption stated, are also found. A number of previously proposed full-order observers are analyzed within the developed framework, generally showing agreement between the full- and reduced-order models.
| Original language | English |
|---|---|
| Pages (from-to) | 1319-1329 |
| Number of pages | 11 |
| Journal | IEEE Transactions on Industrial Electronics |
| Volume | 55 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 3 Mar 2008 |
| MoE publication type | A1 Journal article-refereed |
Keywords
- induction-motor drives
- observes
- sensorless control