DOI: https://doi.org/10.15407/techned2020.02.036


Journal Tekhnichna elektrodynamika
Publisher Institute of Electrodynamics National Academy of Science of Ukraine
ISSN 1607-7970 (print), 2218-1903 (online)
Issue No 2, 2020 (March/April)
Pages 36 - 42

Verbytskyi I.V.*, Zhuikov V.J.**
National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institue”,
pr. Peremohy, 37, Kyiv, 03056, Ukraine,
e-mail: Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript
* ORCID ID : https://orcid.org/0000-0001-7275-5152
** ORCID ID : https://orcid.org/0000-0002-3338-2426


In the paper impact of low-frequency interharmonics on AC devices, in particular asynchronous motors is described. It is shown that because of the indefinite time interval of measurement, interharmonics detection and calculation is complicated. To improve the method of interharmonics calculating, we propose to use a generalized Fourier series of several variables and outline the basic theoretical principles for its use. The example of an adjustable electric drive of an asynchronous motor based on developed theoretical method shows the influence of interharmonics on the motor magnetization. A model of asynchronous electric drive in MatLab Simulink® environment confirms that the error of calculation of interharmonics based on the generalized Fourier series does not exceed 5%. References 10, figures 5.

Key words: interharmonics; asynchronous motor drive; generalized Fourier series of several variables.

Received: 13.01.2020
Published: 26.02.2020


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