Version 1
: Received: 20 November 2020 / Approved: 23 November 2020 / Online: 23 November 2020 (14:45:05 CET)
How to cite:
Кодкин, В. On the Physical Nature of the Problems of Frequency Control of Asynchronous Electric Drives. Preprints2020, 2020110592. https://doi.org/10.20944/preprints202011.0592.v1
Кодкин, В. On the Physical Nature of the Problems of Frequency Control of Asynchronous Electric Drives. Preprints 2020, 2020110592. https://doi.org/10.20944/preprints202011.0592.v1
Кодкин, В. On the Physical Nature of the Problems of Frequency Control of Asynchronous Electric Drives. Preprints2020, 2020110592. https://doi.org/10.20944/preprints202011.0592.v1
APA Style
Кодкин, В. (2020). On the Physical Nature of the Problems of Frequency Control of Asynchronous Electric Drives. Preprints. https://doi.org/10.20944/preprints202011.0592.v1
Chicago/Turabian Style
Кодкин, В. 2020 "On the Physical Nature of the Problems of Frequency Control of Asynchronous Electric Drives" Preprints. https://doi.org/10.20944/preprints202011.0592.v1
Abstract
Abstract: The article proposes to consider the possibility of connecting the problems of engineering synthesis of frequency control systems for asynchronous electric drives with the basic provisions of the theory of identification of asynchronous electric motors based on the equations of a generalized AC electric machine.The article presents the results of experimental studies of load parrying processes in asynchronous electric drives with vector and scalar controls. These results indicate the absence of fundamental advantages as processes in a drive with vector control. This advantage should have manifested itself in a more efficient formation of the moment and fast transients. It is suggested that the reason for this is in too significant errors, assumptions and simplifications of the equations adopted in the derivation of vector control and which are its theoretical basis. A method is proposed for describing asynchronous electric motors by nonlinear transfer functions, which made it possible to formulate the principle of correction of electric drives and a method for assessing their efficiency.The article shows. that the correction based on the proposed nonlinear transfer functions of the induction motor is much more efficient than the traditional vector control, which was confirmed by detailed experiments and modeling. The results of the most important of which are given in the article. An assumption was made. that the advantage in efficiency is due to a more accurate identification of the dynamics of an asynchronous electric motor with a gear function instead of vector equations.
Keywords
asynchronous electric motor; frequency control; vector control; vector equation; nonlinear transfer functions; experiment
Subject
Engineering, Automotive Engineering
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
