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EPE, a monthly journal, publishes research and review articles in all important aspects of electric power engineering and other professionals involved in the electric power industry. Both experimental and theoretical papers are acceptable provided they report important findings, novel insights, or useful techniques in…
Radek Martinek, Jan Zidek, Petr Bilik, Jakub Manas, Jiri Koziorek, Zhaosheng Teng, He Wen
This paper deals with the adaptive control mechanism management meant for shunt active power filters (SAPF). Systems driven this way are designed to improve the quality of electric power (power quality) in industrial networks. The authors have focused on the…
Petr Bilik, Jan Zidek, Vaclav Kus, Tereza Josefova
Due to the operation of power semiconductor switching converters, the content of harmonic currents, which these switching converters take from the feed array, is still increasing. One of the possible ways of minimizing these currents is the use of pulse switc…
S. A. Temerbaev, V. P. Dovgun, N. P. Bojarskaja, A. F. Sinyagovski
In this paper a new Active Power Filter (APF) control method is proposed. Computation of the load harmonic compensation current is performed by the adaptive notch infinite impulse response (IIR) filter. Performance of the proposed scheme has been verified by…
Xiangfei Sun, Jianping Zhou
The effect of different phase compensation methods on second harmonic ratio of magnetizing inrush is investigated. The flux linkage expression of switching on an unload transformer is deduced and influence factors of inrush current are analyzed firstly. Then…
Yan Li, Bo Zhang, Longnv Li, Tongxun Yang, Ning Wang
The method is used in this paper to calculate the leakage magnetic field of SSZ11-50000/110 Power transformer , and by which the structures’ influences to the main leakage flux are analyzed. Through the combination of the product and TEAM Problem 21B, the sur…
Yan Li, Zhenhai Zhang, Longnv Li, Guoli Li, Manhua Jiang
Based on the method of compound and additional conditions under the conditions of the equal temperature rise and the equal potential drop (P.D.) of resistance, the application of design software of dry-type air-core reactor is introduced in this thesis. The a…
Yan Li, Yanchao Gao, Longnv Li, Di Zhang, Fangxu Han
DC bias current flowing into the neutral point of power transformer will seriously affect the normal operation of AC power system. In this paper, exciting current, harmonic component of the excitation current, magnetic flux density and noise of transformer we…
Yan Li, Longnv Li, Yongteng Jing, Fangxu Han
It is difficult to accurately calculate the short-circuit impedance, due to the complexity of axial dual-low-voltage split-winding transformer winding structure. In this paper, firstly, the leakage magnetic field and short-circuit impedance model of axial dua…
Yan Li, Longnv Li, Yongteng Jing, Bo Zhang
In order to analyze the leakage magnetic field and stray loss in power transformer, leakage magnetic field and stray loss in structure parts of a power transformer are calculated by three-dimensional (3-D) non-linear time harmonic finite element method (FEM).…
Chunming Wang, Cong Pan, Jingjing Chen, Pengchao Song, Jian-ke Li
Relative to the power grid, the short-capacity system has smaller inertia and weaker ability to bear disturbance. As a result, the synchronous generator in short-capacity system will be greatly influenced by harmonic. To reveal how harmonic influence the gene…
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EPE, a monthly journal, publishes research and review articles in all important aspects of electric power engineering and other professionals involved in the electric power industry. Both experimental and theoretical papers are acceptable provided they report important findings, novel insights, or useful techniques in… All articles are open access under a CC BY 4.0 licence, with authors retaining copyright.
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