College of Mining, NUST MISIS, Moscow, Russia:

Yu. V. Shevyrev, Professor, Doctor of Engineering Sciences, uvshev@yandex.ru

Gubkin Russian State University of Oil and Gas (National Research University), Moscow, Russia:
N. Yu. Shevyreva, Senior Lecturer, Candidate of Engineering Sciences

Common use of variable frequency asynchronous electric drive in mineral mining and processing industry results in considerable increase in the content of higher harmonics and in power quality loss in the power supply systems. Frequency converters with dynamic voltage rectifiers are the efficient tools of improvement of power quality and energy supply for machines and mechanisms equipped with the variable frequency asynchronous electric drives in mines. The dynamic rectifier contains a filter to abate higher harmonics in the AC mains in accordance with the voltage quality standards. When parameters of the filter of the dynamic rectifier for the voltage waveform are chosen improperly, it is impossible to obtain the sinusoidal waveform. The proposed procedure for selecting parameters of the dynamic rectifier filter has two stages: plotting of frequency response curve of filter gain for the selected filter circuit at different filter parameters and computer modeling to refine the filter parameters so that the specified total harmonic factor is ensured. The article presents dependences for selecting capacity of the dynamic rectifier filter such that to ensure the specified total harmonic factor. It is shown that the inclusion of the harmonic filter with the parameters selected using the proposed procedure into the voltage waveform rectifier enables essential reduction in the value of higher harmonics in the supply voltage spectrum and, thus, allows the voltage waveform approaching a sinusoid.

1. Fedorov O. V., Sarvarov A. S., Shevyrev Yu. V. Resource Base to Support New Technologies in the Industry. Moscow : KnoRus, 2016. 142 p.
2. Sultanguzin I. A., Shomov P. A. Development of energy saving program of integrated iron and steel works on the basis of information-analytical system “OptiMet”. Chernye Metally. 2016. No. 6. pp. 47–53.
3. Wendt P., Zwickel G., Witke H. Optimal energy consumption owing to innovative usage of secondary heat resources. Chernye Metally. 2016. No. 8. pp. 54–58.
4. Shpiganovich A. A., Fedorov O. V., Pushnitsa K. A., Churkina E. V. Operating features of electric power supply systems at the iron and steel works. Chernye Metally. 2017. No. 5. pp. 56–61.
5. Suslov M. A., Churikov A. M., Shevyrev Yu. V. Improvement of power quality in mains in oil field development. Proceedings of VIII International (XIX All-Russian) Conference: Automated Electric Drive AEP–2014. Saransk : Mordovsk. universitet, 2014. Vol. 2. pp. 177–182.
6. Milesevic B., Uglešić I., Filipovic-Grcic B. Power quality analysis in electric traction system with threephase induction motors. Electric Power Systems Research. 2016. Vol. 138. pp. 172–179.
7. Boudebbouz O., Boukadoum A., Medoued A. Effective electric power quantities and the sequence reference frame: A comparison study. Electric Power Systems Research. 2016. Vol. 140. pp. 485–492.
8. Vinogradov A. B. Vector Control of AC Electric Drive. Ivanovo : Izdatelstvo Ivanovskogo gosudarstvennogo energeticheskogo universiteta im. V. I. Lenina, 2008. 298 p.
9. Efimov A. A., Shreiner R. T. Dynamic Converters in Variable Frequency AC Drives. Novouralsk : Izdatelstvo NGTI, 2001. 250 p.
10. Shreiner R. T. Mathematical Modeling of AC Drives with Semiconductor Frequency Converters. Yekaterinburg : UrO RAN, 2000. 654 p.
11. Singh B., Singh B. N., Chandra A., Al-Haddad K., Pandey A., Kothari D. P. A Review of Three-Phase Improved Power Quality AC-DC Converters. IEEE Transactions on Industrial Electronics. 2004. Vol. 51, No. 3. pp. 641–660.
12. Morán L., Espinoza J., Ortíz M., Rodríguez J., Dixon J. Practical Problems Associated with The Operation of ASDs Based on Active Front End Converters in Power Distribution Systems. Conference Record of the 2004 IEEE Industry Applications Conference : 39^th IAS Annual Meeting. Seattle, 2004. Vol. 4. pp. 2568–2572.
13. Yoon John. Motors, drives, and HVAC efficiency. Consulting – Specifying Engineer. 2016. No. 1. pp. 50–63.
14. Pollefliet J. Power Electronics: Drive Technology and Motion Control. London : Academic Press, 2017. 412 p.
15. Borodatskii E. G., Vasiliev P. A., Shilin S. I., Vasiliev I. V. Frequency converter for transportation systems in mining. Proceedings of VIII International (XIX All-Russian) Conference: Automated Electric Drive AEP–2014. Saransk : Mordovsk. universitet, 2014. Vol. 2. pp. 257–261.
16. Osipov O. I., Ivanov A. G., Ignatiev P. S., Gusev A. V. Asynchronous slow-speed drive of mine hoisting machine. Proceedings of VIII International (XIX All-Russian) Conference: Automated Electric Drive AEP–2014. Saransk : Mordovsk. universitet, 2014. Vol. 2. pp. 367–369.
17. Zakharov A. Calculation of output filter of PWM inverter. Sovremennaya elektronika. 2005. No. 6. pp. 48–50.
18. Rajendra Aparnathi, Ved Vyas Diwedi. Study of the LCL Filter for Three Phase inverter in higher stability for the Active damping Method using Genetic Algorithm Base. International Journal of Advancements in Technology. 2013. Vol. 4, No. 1. pp. 36–49.
19. Abranov B. I., Kogan A. I., Breslav B. M., Kochetkov V. D., Kozhakov O. I. et al. Variable frequency electric drive of drilling rigs BU-4200/250. Elektrotekhnika. 2009. No. 1. pp. 8–13.
20 . Shevyreva I. Y. Simulation of frequency controlled electric drive with active front end. Glavnyi energetik. 2015. No. 8. pp. 69–74.