Sensorless very low and zero speed estimations with on-line secondary resistance estimation of induction motor without adding any signal

Kan Akatsu, Atsuo Kawamura

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

4 Citations (Scopus)

Abstract

In the speed sensorless control of the induction motor, the machine parameters (especially the secondary resistance R 2) have a strong influence to the speed estimation. It is known that the simultaneous estimation of the speed and the R 2 is impossible in the slip frequency type vector control, because the secondary flux is constant. In addition, the output voltage error due to the dead time and the voltage drop of the inverter makes influence to the secondary flux estimation, but the simultaneous compensation of the output voltage and the primary resistance R 2 is very difficult. In this paper the R 2 estimation without adding any additional signal to the stator current is proposed. In the high frequency range, the R 2 is estimated in the transient state, and in the very low frequency range, the R 2 is estimated in proportion to the estimated R 1 when the ideal voltage source by the power op-amp is used instead of the voltage source inverter to avoid the output voltage error. In the use of these algorithms, the low speed estimation was possible and the zero speed control was achieved under the 10-40% load conditions. This paper clarified that the zero speed estimation is possible with the primary and secondary resistance estimations when the output voltage is ideal.

Original languageEnglish
Title of host publicationConference Record - IAS Annual Meeting (IEEE Industry Applications Society)
PublisherIEEE
Pages187-193
Number of pages7
Volume1
Publication statusPublished - 1999
Externally publishedYes
EventProceedings of the 1999 IEEE Industry Applications Conference - 34th IAS Annual Meeting - Phoenix, AZ, USA
Duration: 1999 Oct 31999 Oct 7

Other

OtherProceedings of the 1999 IEEE Industry Applications Conference - 34th IAS Annual Meeting
CityPhoenix, AZ, USA
Period99/10/399/10/7

Fingerprint

Induction motors
Electric potential
Fluxes
Operational amplifiers
Speed control
Stators

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Akatsu, K., & Kawamura, A. (1999). Sensorless very low and zero speed estimations with on-line secondary resistance estimation of induction motor without adding any signal. In Conference Record - IAS Annual Meeting (IEEE Industry Applications Society) (Vol. 1, pp. 187-193). IEEE.

Sensorless very low and zero speed estimations with on-line secondary resistance estimation of induction motor without adding any signal. / Akatsu, Kan; Kawamura, Atsuo.

Conference Record - IAS Annual Meeting (IEEE Industry Applications Society). Vol. 1 IEEE, 1999. p. 187-193.

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

Akatsu, K & Kawamura, A 1999, Sensorless very low and zero speed estimations with on-line secondary resistance estimation of induction motor without adding any signal. in Conference Record - IAS Annual Meeting (IEEE Industry Applications Society). vol. 1, IEEE, pp. 187-193, Proceedings of the 1999 IEEE Industry Applications Conference - 34th IAS Annual Meeting, Phoenix, AZ, USA, 99/10/3.
Akatsu K, Kawamura A. Sensorless very low and zero speed estimations with on-line secondary resistance estimation of induction motor without adding any signal. In Conference Record - IAS Annual Meeting (IEEE Industry Applications Society). Vol. 1. IEEE. 1999. p. 187-193
Akatsu, Kan ; Kawamura, Atsuo. / Sensorless very low and zero speed estimations with on-line secondary resistance estimation of induction motor without adding any signal. Conference Record - IAS Annual Meeting (IEEE Industry Applications Society). Vol. 1 IEEE, 1999. pp. 187-193
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abstract = "In the speed sensorless control of the induction motor, the machine parameters (especially the secondary resistance R 2) have a strong influence to the speed estimation. It is known that the simultaneous estimation of the speed and the R 2 is impossible in the slip frequency type vector control, because the secondary flux is constant. In addition, the output voltage error due to the dead time and the voltage drop of the inverter makes influence to the secondary flux estimation, but the simultaneous compensation of the output voltage and the primary resistance R 2 is very difficult. In this paper the R 2 estimation without adding any additional signal to the stator current is proposed. In the high frequency range, the R 2 is estimated in the transient state, and in the very low frequency range, the R 2 is estimated in proportion to the estimated R 1 when the ideal voltage source by the power op-amp is used instead of the voltage source inverter to avoid the output voltage error. In the use of these algorithms, the low speed estimation was possible and the zero speed control was achieved under the 10-40{\%} load conditions. This paper clarified that the zero speed estimation is possible with the primary and secondary resistance estimations when the output voltage is ideal.",
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