L. Ran
Sampling-induced resonance in an encoderless vector-controlled induction motor drive
Ran, L.; Liao, Y.
Authors
Y. Liao
Abstract
This paper illustrates an effect of sampling in an encoderless vector-controlled induction motor drive with a digital controller. The analysis focuses on the speed observer and the speed control loop which is executed at discrete instants. It is shown that the estimated speed can fluctuate between samples in the speed loop and cause a sustained resonance via feedback. The shaft inertia is not available to smooth the ripple of the estimated speed and the associated resonance could adversely affect the inverter and machine. An analytical model is proposed to evaluate the risk of such a condition in the design and on-site adjustment of control gains. The requirement for a smoothing filter in the speed loop is identified.
Citation
Ran, L., & Liao, Y. (2004). Sampling-induced resonance in an encoderless vector-controlled induction motor drive. IEEE Transactions on Industrial Electronics, 51(3), 551-557. https://doi.org/10.1109/tie.2004.825371
Journal Article Type | Article |
---|---|
Publication Date | 2004-06 |
Deposit Date | May 27, 2008 |
Publicly Available Date | May 27, 2008 |
Journal | IEEE Transactions on Industrial Electronics |
Print ISSN | 0278-0046 |
Publisher | Institute of Electrical and Electronics Engineers |
Peer Reviewed | Peer Reviewed |
Volume | 51 |
Issue | 3 |
Pages | 551-557 |
DOI | https://doi.org/10.1109/tie.2004.825371 |
Keywords | Digital control, Drives, Induction motors, Observers. |
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©2004 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
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