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DOI: https://doi.org/10.15407/techned2019.02.072

RESEARCH OF THE WORK OF PUMPING UNITS IN THE MODE OF STABILIZATION OF THE LIQUID LEVEL IN THE RESERVOIR BASED ON THE IMITATION MODEL

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 72 – 77

Authors
O.M. Yurchenko1*, O.V. Chermalykh2**, O.V. Danilin2***

1 – Institute of Electrodynamics National Academy of Sciences of Ukraine,
pr. Peremohy, 56, Kyiv, 03057, Ukraine,
e-mail: Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript
2 – National Technical University of Ukraine «Igor Sikorsky Kyiv Polytechnic Institute»,
pr. Peremohy, 37, Kyiv, 03056, Ukraine,
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* ORCID ID : http://orcid.org/0000-0002-2107-2308
** ORCID ID : http://orcid.org/0000-0001-8609-7525
*** ORCID ID : http://orcid.org/0000-0003-3207-1156

Abstract

The article investigates electrohydraulic processes in the pump unit in the mode of maintaining a constant liquid level in the reservoir with the use of imitation model of the system that includes an asynchronous electric drive with frequency regulation and a pump with a hydraulic network. The mathematical components of the model implement the main dependencies that relate the fluid inflow, flow rate and pump head, electric motor angular velocity, active power and system efficiency. The sub-drive of the electric drive is a structural model that implements the required scalar law of voltage regulation using frequency and contains a PID controller in the level stabilization loop. During the simulation, the variable operation mode of the pump unit is considered for the case of liquid inflow change within the acceptable limits from the minimum to the maximum values. Graphic dependencies, that represent phase trajectories with respect to hydraulic characteristics and energy parameters, are shown and analyzed. References 6, figures 4, table 1.

 

Key words: pumping unit, frequency regulation, scalar control, level stabilization.

 

Received:    15.12.2017
Accepted:    05.09.2018
Published:  19.02.2019

 

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