Non-invasive speed measurement of inverter driven induction motors

T. C. Green, B. W. Williams, D. S. Schramm

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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 languageEnglish
Title of host publicationConference Record - IAS Annual Meeting (IEEE Industry Applications Society)
Pages395-398
Number of pages4
Publication statusPublished - 1990
Event1990 IEEE Industry Applications Society Annual Meeting - Seattle, WA, USA
Duration: 7 Oct 199012 Oct 1990

Conference

Conference1990 IEEE Industry Applications Society Annual Meeting
Abbreviated titleIAS-25 Part 1 (of 2)
CitySeattle, WA, USA
Period7/10/9012/10/90

Fingerprint

Induction motors
Rotors
Switched capacitor filters
Cutoff frequency
Stators
Bandwidth

Cite this

Green, T. C., Williams, B. W., & Schramm, D. S. (1990). Non-invasive speed measurement of inverter driven induction motors. In Conference Record - IAS Annual Meeting (IEEE Industry Applications Society) (pp. 395-398)
Green, T. C. ; Williams, B. W. ; Schramm, D. S. / Non-invasive speed measurement of inverter driven induction motors. Conference Record - IAS Annual Meeting (IEEE Industry Applications Society). 1990. pp. 395-398
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Green, TC, Williams, BW & Schramm, DS 1990, Non-invasive speed measurement of inverter driven induction motors. in Conference Record - IAS Annual Meeting (IEEE Industry Applications Society). pp. 395-398, 1990 IEEE Industry Applications Society Annual Meeting, Seattle, WA, USA, 7/10/90.

Non-invasive speed measurement of inverter driven induction motors. / Green, T. C.; Williams, B. W.; Schramm, D. S.

Conference Record - IAS Annual Meeting (IEEE Industry Applications Society). 1990. p. 395-398.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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AU - Schramm, D. S.

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BT - Conference Record - IAS Annual Meeting (IEEE Industry Applications Society)

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Green TC, Williams BW, Schramm DS. Non-invasive speed measurement of inverter driven induction motors. In Conference Record - IAS Annual Meeting (IEEE Industry Applications Society). 1990. p. 395-398