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DOI: https://doi.org/10.15407/techned2017.03.071

FEATURES OF THYRISTOR CONTROL BY REACTORS IN “TRIANGLE” CIRCUIT FOR SIMULATION OF NONLINEAR LOAD

Journal Tekhnichna elektrodynamika
Publisher Institute of Electrodynamics National Academy of Science of Ukraine
ISSN 1607-7970 (print), 2218-1903 (online)
Issue No 3, 2017 (May/June)
Pages 71 – 78

 

Authors
O.L. Shytov, O.M. Burov
Zaporizhia State Engineering Academy,
pr. Sobornyi, 226, Zaporizhia, 69006, Ukraine,
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Abstract

A block diagram of model of non-linear and sharply variable load, in which the power part represents thyristor-controlled reactors connected in "triangle", is proposed and considered. This model is used in the stands for testing the dynamic reactive power compensation systems, intended mainly for working in networks with arc steel-smelting furnaces. The way of control, realized in this model, enables a power part to generate in a network a wide spectrum of even and odd current harmonics. The mathematical description of the physical processes in control circuits and in a power part of load model, is executed. Recommendations for the control of the nonlinear load in studies of static and dynamic characteristics compensation devices are given, and examples of simulation and evaluation of flicker in the network are provided. References 5, figures 5.

 

Key words: thyristor-controlled reactor, nonlinear load, higher harmonics, reactive power, testing stand.

 

Received:    08.09.2016
Accepted:    01.02.2017
Published:  15.05.2017

 

References

1. Acha E., Agelidis V.G., Anaya-Lara O., Miller T.J.E. Power Electronic Control in Electrical Systems. Series: Newnes power engineering series. UK: Oxford, 2002. ISBN 9780750651264
2. IEC 61000-4-15: 1997+A1: 2003, Electromagnetic compatibility (EMC) - Part 4: Testing and measurement techniques – Section 15: Flickermeter – Functional and design specifications.
3. Shytov O., Xu Beibei, Zhao Bo, Wang Xiao Min, Zuo Qiang. Control Method By Dynamic Load. Patent CN 203826974. 2014.
4. Shytov O.L., Ponomaryov V.O. The device for control system synchronisation by gated the converter. Patent SU 1697210. 1991.

5. Jay Ashton Cox, Rolling Hills Estates, Calif. Phase Locked Firing Circuit For SCR'S, Or The Like. Patent US. 1977.

 

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