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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Hurst, K.D. Habetler, T.G. |
| Copyright Year | 1994 |
| Description | Author affiliation: Sch. of Electr. Eng., Georgia Inst. of Technol., Atlanta, GA, USA (Hurst, K.D.; Habetler, T.G.) |
| Abstract | This paper proposes a sensorless speed measurement scheme which improves the performance of transducerless induction machine drives, especially for low frequency operation. Speed-related harmonics which arise from rotor slotting and eccentricity are analyzed using digital signal processing. These current harmonics exist at any nonzero speed and are independent of time-varying parameters such as stator winding resistance. A spectral estimation technique combines multiple current harmonics to determine the rotor speed with more accuracy and less sensitivity to noise than analog filtering methods or the fast Fourier transform. An on-line initialization routine determines machine-specific parameters required for slot harmonic calculations. This speed detector, which has been verified at frequencies as low as 1 Hz, can provide robust, parameter-independent information for parameter tuning or as an input to a sensorless flux observer for a field-oriented drive. The performance of the algorithm is demonstrated over a wide range of inverter frequencies and load conditions. |
| Starting Page | 10 |
| Ending Page | 15 |
| File Size | 601646 |
| Page Count | 6 |
| File Format | |
| ISBN | 0780318595 |
| DOI | 10.1109/PESC.1994.349756 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 1994-06-20 |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Velocity measurement Power harmonic filters Frequency Induction machines Harmonic analysis Signal analysis Digital signal processing Stator windings Filtering Fast Fourier transforms |
| Content Type | Text |
| Resource Type | Article |
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