Keywords
multilevel rectifier
discrete time control
decomposition
adjustment blocks
efficiency
How to Cite
Abstract
Harmonization of the requirements of certain groups of electrical and electrotechnological consumers of electricity with the current supply conditions requires in many cases the use of converters. Prominent among the systems designed to purposefully change the supply voltage of such consumers (regulation, stabilization) are converters with transformer-and-switches executive structure or tap changing (smart) transformers, which use discrete-time control, in particular so-called multi-level AC rectifiers (MLR). In the synthesis of MLR the main problem is to determine the optimal law of sectioning of the secondary envelope of its transformer. The paper analyzes the features of MLR decomposition into two functionally identical blocks under the given limitation of the output voltage control range and its difference from the decomposition of wide-range MLRs. The a priori variety of circuit technical solutions of such MLRs is determined. New MLRs with high efficiency of semiconductor switch elements use are offered. References 14, tables 3, figures 6.
References
1. Lypkivskyi K.O. Transformer-and-Switches Executive Structures of Alternating Current Voltage Converters. Kiev: Naukova Dumka, 1983. 216 p. (Rus)
2. Adasur, Mr Pramod Prakash, and D. G. Chougule. A review of power transformer tap switching using semiconductor devices. JournalNX, 2016. 2(6), Pp. 16–18. Retrieved from https://repo.journalnx.com/index.php/nx/article/view/1025
3. Electronic Tap Switching Voltage Regulator. Available at: http://www.ustpower.com/comparing-automatic-voltage-regulation-technologies/avr-guide-electronic-tap-switching-voltage-regulator (accessed 31.10.2024).
4. Ram G., Prasanth V., Bauer P., Bärthlein, E. M. Comparative analysis of on-load tap changing (OLTC) transformer topologies. 16th International Conf. Power Electronics and Motion Control Conference and Exposition (PEMC), IEEE, 21-24 Sep. 2014, Antalya, Turkey. Pp. 918–923. DOI: https://doi.org/10.1109/EPEPEMC.2014.6980624
5. Huang, M., Dong, L., Zhang, J., Wang, J., & Hao, Z.. Research on the Differential Protection Algorithm of Multi-Tap Special Transformer. Journal of Power and Energy Engineering. V.2. № 9. Pp. 98–105. DOI: https://doi.org/10.4236/jpee.2014.29014
6. Bimal, K Bose. Power Electronics – Why the Field is so Exciting. IEEE Power Electronics Society Newsletter Fourth Quarter. 2007. V. 19. № 4. Pp. 11–20.
7. Lypkivskyi K.O., Mozharovskyi A.G. Features of sectioning the turns of the transforming element of the transformer-key actuating structure in the boost channel of the DC power system. Tehnichna Electrodynamika. 2020. № 6. Pp. 25–31. (Ukr). DOI: https://doi.org/10.15407/techned2020.06.025
8. Lypkivskyi K.O., Mozharovskyi A.G., Improvement of a multilevel rectifier as part of a booster channel of a DC power supply system by decomposition of its elements. Tehnichna Electrodynamika. 2021. № 2. Pp. 35–41. (Ukr) DOI: https://doi.org/10.15407/techned2021.02.035
9. Peng, Fang Z.; Qian, Wei. Recent advances in multilevel converter/inverter topologies and applications. The 2010 International Power Electronics Conference-ECCE ASIA-. IEEE, 2010. Pp. 492–501. DOI: https://doi.org/10.1109/IPEC.2010.5544625
10. Lee Hyun-woo etc. A Multi-Level Converter. KR Patent KR100750341B1. 2007.08.17.
11. Lypkivskyi K.O., Mozharovskyi A.G., Generalization of the main provisions of the decomposition of transformer-and-switches executive structures of voltage regulators with discrete time control of semiconductor elements. Tehnichna Electrodynamika. 2024. № 3. Pp. 36–40. (Ukr) DOI: https://doi.org/10.15407/techned2024.03.036
12. Lypkivskyi K.O., Mozharovskyi A.G., Features of decomposition of multilevel rectifiers under condition of the specific limit of the range of output voltage regulation. Tehnichna Electrodynamika. 2022. № 2. Pp. 21–26. (Ukr) DOI: https://doi.org/10.15407/techned2022.02.021
13. Bardin V.M. Reliability of power semiconductor devices. M.: Energiya, 1978. 96 p. (Rus)
14. https://imrad@imrad.com.ua
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