1. A study on the speed estimation methods of induction motor drives in the field weakening region
- Author
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Myoung-Ho Shin, Dong-Seok Hyun, and Suk-Kyum Kim
- Subjects
Observer (quantum physics) ,Computer science ,Stator ,Flux ,Control engineering ,Kalman filter ,Wound rotor motor ,law.invention ,law ,Control theory ,Field weakening ,State observer ,Estimation methods ,Induction motor - Abstract
It is important to estimate the exact rotor speed for field weakening operation in the speed sensorless stator flux oriented (SFO) induction motor drive. Several methods have been reported to estimate exactly the speed in the speed sensorless system. In this paper, we apply two observer-based methods, the Luenberger observer (LO) and the Kalman filter (KF) to SFO induction motor drive in order to achieve a speed sensorless operation in field weakening region. Two control methods are reviewed and discussed. The operation characteristics of these methods in the field weakening region is compared by simulation and experiment.
- Published
- 2005
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