Improvement of compensation method for non-active current components at mains supply voltage unbalance

Authors

  • Atef Saleh Al-Mashakbeh Tafila Technical University Et Tafila New Hauway str., 179, Tafila, Et Tafila, Jordan, 66110, Jordan
  • Mykhaylo Zagirnyak Kremenchuk Mykhailo Ostrohradskyi National University Pershotravneva str., 20, Kremenchuk, Poltava region, Ukraine, 39600, Ukraine https://orcid.org/0000-0003-4700-0967
  • Mariia Maliakova Kremenchuk Mykhailo Ostrohradskyi National University Pershotravneva str., 20, Kremenchuk, Poltava region, Ukraine, 39600, Ukraine https://orcid.org/0000-0001-8816-2503
  • Andrii Kalinov Kremenchuk Mykhailo Ostrohradskyi National University Pershotravneva str., 20, Kremenchuk, Poltava region, Ukraine, 39600, Ukraine https://orcid.org/0000-0003-1975-5123

DOI:

https://doi.org/10.15587/1729-4061.2017.87316

Keywords:

active compensation, cross-vector theory, balancing block, unbalance, frequency-domain

Abstract

The necessity and topicality of the problem of improving the efficiency of compensation for power consuming asymmetrical equipment negative influence on the low-voltage mains have been demonstrated. That is why the ways of improvement of the compensation system have been offered on the basis of the analysis of the processes of compensation for currents non-active components in a three-phase power supply system under the conditions of supply voltage unbalance. The analysis was performed in an analytical form in the frequency domain. An instantaneous power cross-vector theory was used to generate active and reactive power instantaneous components and also to determine compensation currents in the analyzed power supply system. Improvement of the method consists in exclusion of voltage asymmetrical components, caused by the mains distortions, from the algorithm of generation of compensation currents. It was realized with the use of the designed blocks of separation and balancing of the supply mains voltage signals. The latter improved the efficiency of operation of power supply systems and the speed of operation of the compensation system. The significance of the presented paper consists in the fact that the offered method provides correct operation of the compensation system under the conditions of unbalance of the supply mains voltages. This makes it possible to improve power indices of the power supply system, to reduce the value of reactive power, voltage drop at the mains resistances, unbalance coefficient and the coefficient of distortion of currents sinusoidality and supply mains voltages. In the future, the presented method will be applied to compensation for currents non-active components in industrial power supply systems to which nonlinear and asymmetric equipment, characterized by a sharply changed operation modes, is connected.

Author Biographies

Atef Saleh Al-Mashakbeh, Tafila Technical University Et Tafila New Hauway str., 179, Tafila, Et Tafila, Jordan, 66110

PhD, Associate Professor

Department of Electrical Engineering 

Mykhaylo Zagirnyak, Kremenchuk Mykhailo Ostrohradskyi National University Pershotravneva str., 20, Kremenchuk, Poltava region, Ukraine, 39600

Doctor of technical science, Professor

Department of Electric Machines and Devices

Mariia Maliakova, Kremenchuk Mykhailo Ostrohradskyi National University Pershotravneva str., 20, Kremenchuk, Poltava region, Ukraine, 39600

PhD, Senior Lecturer

Department of Electric Machines and Devices

Andrii Kalinov, Kremenchuk Mykhailo Ostrohradskyi National University Pershotravneva str., 20, Kremenchuk, Poltava region, Ukraine, 39600

PhD, associate professor

Department of Electric Machines and Devices

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Published

2017-02-23

How to Cite

Al-Mashakbeh, A. S., Zagirnyak, M., Maliakova, M., & Kalinov, A. (2017). Improvement of compensation method for non-active current components at mains supply voltage unbalance. Eastern-European Journal of Enterprise Technologies, 1(8 (85), 41–49. https://doi.org/10.15587/1729-4061.2017.87316

Issue

Vol. 1 No. 8 (85) (2017): Energy-saving technologies and equipment

Section

Energy-saving technologies and equipment

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Copyright (c) 2016 Мария Сергеевна Малякова

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