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Identification of AC Drivers from the Families of Frequency Characteristics

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Abstract

To identify the dynamics of asynchronous electric drives (AEDs) with frequency control, it is suggested to use nonlinear transfer functions and the equation of the family of frequency characteristics of an electric drive, which depend on the frequency of stator voltage and slip. The results of experiments and simulations that confirm the theoretical conclusions have been presented. The frequency characteristics of the board drive that are calculated by the suggested method have allowed one to explain the problems of frequency control unexplained by traditional methods, such as analytical, vector diagrams, equivalent circuits, etc. The same technique has allowed us to formulate the structural correction of AEDs, which improves the drive dynamics by almost twofold and makes it comparable with the dynamics of permanent magnet motors.

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REFERENCES

  1. Usol’tsev, A.A., Vektornoe upravlenie asinkhronnymi dvigatelyami (Vector Control of Induction Motors), St. Petersburg: S.-Peterb. Nats. Issled. Univ. Inf. Tekhnol., Mekh. Opt., 2002.

  2. Usol’tsev, A.A., Sovremennyi asinkhronnyi elektroprivod optiko-mekhanicheskikh kompleksov (Modern Induction Electric Drive of Optical-Mechanical Complexes), St. Petersburg: S.-Peterb. Nats. Issled. Univ. Inf. Tekhnol., Mekh. Opt., 2011.

  3. Codkin, V.L., Baldenkov, A.A., and Loginova, N.A., Experimental research of induction electric drives with frequency control. Vector control instability, Materialy 67-i Nauchnoi konferentsii “Nauka YuUrGU” (Proc. 67th Sci. Conf. “Science in the South Ural State University”), Chelyabinsk: Yuzhno-Ural. Gos. Univ., 2015.

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Authors and Affiliations

  1. South Ural State University, 454080, Chelyabinsk, Russia

    V. L. Kodkin, A. S. Anikin & A. A. Baldenkov

Authors
  1. V. L. Kodkin
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  2. A. S. Anikin
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  3. A. A. Baldenkov
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Corresponding author

Correspondence to V. L. Kodkin.

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Translated by M. Astrov

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Kodkin, V.L., Anikin, A.S. & Baldenkov, A.A. Identification of AC Drivers from the Families of Frequency Characteristics. Russ. Electr. Engin. 91, 756–760 (2020). https://doi.org/10.3103/S1068371220120081

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  • DOI: https://doi.org/10.3103/S1068371220120081

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