Abstract
This paper deals with the flux estimation for sensorless induction motor drives. The linearized model of the speed-adaptive full-order flux observer is applied to help choosing the observer gain and the speed-adaptation gains. It is shown that the linearized model reveals potential instability problems that are difficult to find by other means. An observer gain and a method to vary the speed-adaptation gains in the field-weakening region are proposed. Experimental results show stable operation in a very wide speed range.
| Original language | English |
|---|---|
| Pages (from-to) | 1033-1040 |
| Journal | IEEE Transactions on Industrial Electronics |
| Volume | 51 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 4 Oct 2004 |
| MoE publication type | A1 Journal article-refereed |
Keywords
- flux estimation
- full-order adaptive observer
- induction motor drives
- speed sensorless