Suppression of Ripples of Controllable Rectifiers for Power Supply of Magnetic Systems

A number of requirements are imposed on installations associated with regulated DC sources, including low voltage and current ripple in the load, as well as a wide range of output current variation. Such installations are traditionally made on controlled rectifiers or pulse-width converters in which voltage ripples are always present. The paper considers a method for reducing the voltage ripple of powerful rectifiers for powering magnetic systems based on the insertion of a compensating voltage equal in magnitude and opposite in phase to the ripple voltage into the load circuit. The possibility of using ripple compensators connected in parallel and in series with the load, as well as methods of obtaining a compensating voltage is shown. Methods for obtaining compensating voltage are given. In order to exclude the magnetization of the ripple compensator transformer, it is proposed to use several versions of the compensating transformer and the inclusion of ripple compensators. Practical schemes of passive compensators (with a demagnetizing circuit and a bifilar winding) are analyzed. The problem of developing ripple compensators for multiphase rectifiers, as well as ways to solve it, is considered. Practical recommendations for choosing a core material and calculating a transformer are given. On the basis of the presented theoretical and practical considerations for the design of the ripple compensators, simulation models have been developed in the Simulink pack-age of the MATLAB program. A technique for studying ripple compensators using the simulation models of a symmetrical 12-pulse rectifier that has been developed is presented. The results of simulation of passive ripple compensators, performed in two versions, showed their effectiveness, while the scheme was relatively simple and economic costs were relatively low. Also, the time of setting the set current in the system in the presence of a ripple compensator increases by no more than 3 %, and the accuracy and stability of operation do not change.

1. Medvedko A. (1998) Review of the Power Supplies for Electromagnetic Systems of the Storage Rings and Accelerators. The 17th International Conference on High Energy Accelerators (HEACC'98) 07.09–12.09, Dubna. 1998. 13.

2. Panteleev S. V., Malashin A. N., Karkotskiy D. V., Suchodolov Yu. V. (2018) Synthesis of the Algorithm of the Vector Width-Pulse Modulation in a Nine-Phase Active Voltage Rectifier. Enеrgеtika. Izvestiya Vysshikh Uchebnykh Zavedenii i Energeticheskikh Ob’edinenii SNG = Energetika. Proceedings of CIS Higher Education Institutions and Power Engineering Associations, 61 (4), 334–345. https://doi.org/10.21122/1029-7448-2018-61-4-334-345 (in Russian).

3. Krivtsov A. N., Lur’e M. S., Nikolaev V. P. (1976) Powerful Current Stabilizers. Leningrad, LHSTP. 24 (in Russian).

4. Sanders S. R., Noworolski J. M., Liu X. Z., Verghese G. C. (1991) Generalized Averaging Method for Power Conversion Circuits. IEEE Transactions on Power Electronics, 6 (2), 251–259. https://doi.org/10.1109/63.76811.

5. Klimov V. P., Moskalev A. D. (2002) Problems of Higher Harmonics in Modern Power Supply Systems. Prakticheskaya Silovaya Elektronika [Practical Power Electronics], (5), 26–32 (in Russian).

6. Igol’nikov J. S. (2004) 24-Phase Rectifier. Elektrotekhnika [Electrical Engineering], (10), 51–54 (in Russian).

7. State Standard 34594.1–2019. Electromagnetic Compatibility. “Smart City”: General Provisions. Moscow, Standartinform Publ. 2019. 19 (in Russian).

8. Lurie M. S., Frolov A. S., Lurie O. M. (2015) Power Rectifiers Pulsations Reduction for Magnetic Systems Power Supply. Vestnik Ryazanskogo Gosudarstvennogo Radiotekhnicheskogo Universiteta = Vestnik of Ryazan State Radioengineering University, (51), 141–145 (in Russian).

9. Stepanov A. A., Shchurov N. I. (2012) Twenty-Four Pulse Rectifier in a Distributed DC Power Supply System with Improved Electromagnetic Compatibility. Nauka, Tekhnologii, Innovatsii: Materialy Vseros. Nauch. Konf. Molodykh Uchenykh. Ch. 5 [Science, Technology, Innovations. Materials of the All-Russian Scientific Conference of Young Scientists. Part 5]. Novosibirsk, NSTU. 380–383 (in Russian).

10. Vorfolomeev G. N., Shchurov N. I., Myatezh S. V., Evdokimov S. A. (2003) A Constant Voltage Source with a Sixteen-Fold Ripple Frequency. Elektrotekhnika [Electrical Engineering], (9), 34–38 (in Russian).

11. Yavorskii V. N., Titov O. V. (1969) Calculation of Power Smoothing Filters Designed for Thyristor Controlled Rectifiers. Elektrichestvo = Electricity, (9), 41–45 (in Russian).

12. Wiseman J. C., Wu B. (2005) Active Damping Control of a High-Power PWM Current-Source Rectifier for Line-Current THD Reduction. IEEE Transactions on Industrial Electronics, 52 (3), 758–764. https://doi.org/10.1109/TIE.2005.843939.

13. Hazem Z. (2005) Lowpass Broadband Harmonic Filter Design. Department of Electrical and Electronics Engineering. 192.

14. Active Harmonic Filter. Matic-Electro. Available at: http://www.matic.ru/harmonic-filters/active-harmonic-filters/ (Accessed 17 December 2020) (in Russian).

15. Klimov V. P., Moskalev A. D. (2003) Methods of Harmonic Suppression in Power Supply Systems. Prakticheskaya Silovaya Elektronika [Practical Power Electronics], (6), 24–31 (in Russian).

16. Lurye M. S., Lurye О. M., Baranov Yu. S. (2010) Active Compensators of Rippling for the Powerful Rectifier. Vestnik KrasGAU = Bulletin of KrasGAU, (6), 149–154 (in Russian).

17. Miyairi S., Iida S., Nakata K., Masukawa S. (1986) New Method for Reducing Harmonics Involved in Input and Output of Rectifier with Interphase Transformer. IEEE Transactions on Industry Applications, IA-22 (5), 790–797. https://doi.org/10.1109/TIA.1986.4504795.

18. Leites L.V. (1981) Electromagnetic Calculations of Transformers and Reactors. Мoscow, Energiya Publ. 392 (in Russian).

19. Starodubtsev Yu. N., Belozerov V. Ya. (2002) Magnetic Properties of Amorphous and Nanocrystalline Alloys. Yekaterinburg, Publishing House of the Ural University. 386 (in Russian).

20. Rumiantsev Yu. V., Romaniuk F. A., Rumiantsev V. Yu., Novash I. V. (2018) Digital Current Measurement Element for Operation During Current Transformer Severe Saturation. Enеrgеtika. Izvestiya Vysshikh Uchebnykh Zavedenii i Energeticheskikh Ob’edinenii SNG = Energetika. Proceedings of CIS Higher Education Institutions and Power Engineering Associations, 61 (6), 483–493. https://doi.org/10.21122/1029-7448-2018-61-6-483-493 (in Russian).