Back to Search
Start Over
Comments on "Control and performance of a doubly-fed induction machine intended for a flywheel energy storage system".
- Source :
-
IEEE Transactions on Power Electronics . Jan2013, Vol. 28 Issue 1, p605-606. 2p. - Publication Year :
- 2013
-
Abstract
- The paper [1] proposes a very simple and attractive algorithm for controlling both active and reactive powers of a DFIM with a unique feedback control loop. In this technical note, it is proved that the presented algorithm in [1] yields a marginally stable closed-loop system (for the rotor currents). This fact could imply undesired oscillations in the rotor variables, which, eventually, can be large for certain disturbances. The control law in [1] (which has been cited in more than 100 journal and conference papers) has probably been tested and implemented several times in a real application. However, as the rotor current oscillations are with the same frequency than the power grid (or twice in the three-phase framework), they may have been attributed to the presence of grid-coupling noise or small unbalanced effects instead of the inherent marginal stability of the closed-loop dynamics. The problem detected could be overcome using two nested loops, as many references propose (see a general example in [3] or a recent application in [4]), or adopting amore advanced control design technique [5]. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 08858993
- Volume :
- 28
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Power Electronics
- Publication Type :
- Academic Journal
- Accession number :
- 101265115
- Full Text :
- https://doi.org/10.1109/TPEL.2012.2195680