Abstract
A frequency component in the stator current of the induction motor which is caused by rotor dynamic eccentricity is used for a noninvasive speed measurement. The frequency of this component is related to the rotor speed, and its bandwidth is related to the supply frequency and the phase-lock-loop RC filter cutoff frequency. In the case of an inverter drive, the signal can be extracted from the phase current reconstructed from the DC link current. The use of switched-capacitor filters allows a frequency component related to the rotor speed to be extracted from the DC link of variable-frequency, inverter-driven induction motors.
| Original language | English |
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| Title of host publication | Conference Record - IAS Annual Meeting (IEEE Industry Applications Society) |
| Pages | 395-398 |
| Number of pages | 4 |
| Publication status | Published - 1990 |
| Event | 1990 IEEE Industry Applications Society Annual Meeting - Seattle, WA, USA Duration: 7 Oct 1990 → 12 Oct 1990 |
Conference
| Conference | 1990 IEEE Industry Applications Society Annual Meeting |
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| Abbreviated title | IAS-25 Part 1 (of 2) |
| City | Seattle, WA, USA |
| Period | 7/10/90 → 12/10/90 |