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DOI: https://doi.org/10.15407/techned2019.02.023


Journal Tekhnichna elektrodynamika
Publisher Institute of Electrodynamics National Academy of Science of Ukraine
ISSN 1607-7970 (print), 2218-1903 (online)
Issue No 2, 2019 (March/April)
Pages 23 – 33

V.I. Milykh1*, S.E. Dzenis2**
1 – National technical university Kharkov polytechnic institute,
2, str. Kyrpychova, Kharkiv, Ukraine, 61002,
e-mail: Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript
2 – JSC Electromashina,
106, str. Ozerynskaia, Kharkiv, Ukraine, 61016,
e-mail: Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript
* ORCID ID : http://orcid.org/0000-0002-6176-3103
** ORCID ID : http://orcid.org/0000-0002-8255-559X


The principles and test results of the numerical-field calculation of the power magnetic losses (PML) in electric machines are presented. The elaborated refined method is based on the search for the maxima of the values of magnetic induction in a set of mini-elements in the teeth and the yoke of the armature core, achieved during its rotation. The root-mean-square values of the magnetic induction at the indicated sections of the core as a whole are determined from the distribution of the found maxima and the PML are calculated from them. The method allows to display the calculated models of cores of any shape and practically doesn't require simplification of their geometric structure. The test implementation of the method is done on the DC motor example and relies on experimental data on the PML in it. A comparative analysis of the distributions of magnetic induction and PML is carried out in idling and load modes for armature core variants with one and two rows of axial ventilation ducts and without them. References 16, figures 9, tables 3.


Key words: DC motor, armature core, ventilation ducts, magnetic induction, magnetic power losses, numerical-field calculations, comparative analysis.


Received:    02.08.2018
Accepted:    08.01.2019
Published:  19.02.2019


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