ISSN 0021-3454 (print version)
ISSN 2500-0381 (online version)
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9
Issue
vol 63 / September, 2020
Article

DOI 10.17586/0021-3454-2020-63-6-528-537

UDC 681.5.015.8

MODIFICATION OF THE METHOD OF PARAMETRIC IDENTIFICATION OF A SYNCHRONOUS MACHINE WITH PERMANENT MAGNETS

T. Orłowska-Kowalska
Wroclaw University of Science and Technology, Department of Electrical Machines, Drives and Measurements;


S. Y. Lovlin
ITMO University, Saint Petersburg, 197101, Russian Federation; Associate Professor


M. . Tsvetkova
ITMO University; student


Кононова М. С.
Университет ИТМО;


A. G. Mamatov
ITMO University, Department of Electrotechnics and Precision Electromechanical Systems; Post-Graduate Student


Abstract. A modified method of identification of electrical parameters of a servo drive and a PWM inverter, based on the least square method, is proposed. The proposed identification method uses a model that considers the effect of “dead time” and the voltage drop on the power switches of the converter. The method accuracy is improved by separating the identification of the static transmission coefficient and the electromagnetic time constant into two stages, in each of the stages only one parameter is evaluated. The new method is shown to achieve a higher accuracy of parameter estimation compared to existing methods using a linear model of servo drive.
Keywords: identification, servo drive, dead time, PWM inverter, least squares method

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