Keywords
THDi
passive filter
active filter of parallel type
hybrid filter
decentralized power supply system
How to Cite
Abstract
The analysis of the single-phase hybrid filter of network current harmonics, which can be applied in the decentralized power system, was carried out. Mathematical modeling of such a system that feeds a bridge rectifier with a capacitive filter and the 10 kW active load was performed. A comparison of current spectrograms and current diagrams of different configurations of a hybrid filter implemented in the active part on the basis of an active corrector of the parallel type, and in the passive part - a broadband LMC filter with an additional winding Ld was carried out. The maximum current deviations from the shape of the first harmonic of the current consumption for different structures of the passive filter were determined, which is decisive for the calculation of the power part of the active filter. The installed power of the active filter was calculated, the harmonic coefficients of the current consumption of the power supply network were obtained. Ref. 11, fig. 5, table.
References
Bose B. K.. Modern Power Electronics and AC Drives. Prentice Hall PTR, 2002. 711 p.
IEC 61000-3-12:2011. Electromagnetic compatibility. Part 3-2: Limits. Limits for harmonic currents produced by equipment connected to public low-voltage systems with input current >16A and ≤ 75A per phase.
Volkov I.V. New concept of construction of power circuits of variable frequency asynchronous electric drives. Tekhnichna elektrodynamika. 1999. No 4. Pp. 21–26. (Rus)
Levin M., Volkov I. Universal harmonic mitigating system. Patent USA 6127743. Oct.3, 2000.
Levin M., Volkov I. Combined harmonic filter and phase converter. Patent USA 2006/0197385b A1, Sep.7, 2006.
Volkov I.V., Akinin K.P., Isakov G.V. Comparative analysis of methods of filtering currents consumed by rectifier units. Tekhnichna elektrodynamika. 1999. No 6. Pp. 23–27. (Rus)
Volkov I.V., Styazhkin V.P., Podeiko P.P. Suppression of current harmonics feeding powerful single-phase loads. Tekhnichna elektrodynamika. 2019. No 5. Pp. 36–42. (Rus)
Marunіa Yu.V. Single-phase hybrid filter at the input of the rectifier with a capacitive filter and active load. Pratsi Instytutu elektrodynamiky Natsionalnoi Akademii Nauk Ukrainy. 2020. No 55. Pp. 11–15. (Ukr) DOI: https://doi.org/10.15407/publishing2020.55.011
Spirin V.M., Gubarevich V.M., Grebenyuk V.G., Salko S.V., Marunya Yu.V. Study of the active current shape corrector at low load power. Pratsi Instytutu elektrodynamiky Natsionalnoi Akademii Nauk Ukrainy. 2016. No 43. Pp. 96–101. (Ukr)
Gubarevich V.N., Marunia Yu.V. Single-phase broadband LMC filter at the rectifier input with capacitive load. Visnyk NTU KhPI. 2015. No 12 (1121). Pp. 398–401. (Rus)
State Standard of Ukraine EN 50160:2014. Characteristics of power supply voltage in general purpose electrical networks (EN 50160:2010, IDT). (Ukr)
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Copyright (c) 2021 V.M. Hubarevych, Yu.V. Marunia