Keywords
high-frequency autotransformer with a midpoint
power quality
How to Cite
Abstract
The article considers the properties of the most commonly used two-and multilevel inverter topologies used in systems for converting electricity from several primary power sources into the required high-quality output voltage for low-voltage networks and high-voltage consumers. However, a common disadvantage of most known multilevel converters is the increasing complexity of power structures, an increase in the number of primary power sources, power elements, and the cost of devices as the number of their voltage levels increases. Two schemes of alternative three-level autonomous voltage inverters with a high-frequency autotransformer with a midpoint and an example of constructing their digital control system are proposed. The analysis of their work on PSpice models in the OrCAD design system is carried out. The possibility of obtaining six voltage sublevels with fewer power elements and increased output voltage quality is shown, compared to the corresponding cascade multilevel inverters. The advantages and applications of autotransformer bridge voltage inverters in terms of energy and functionality compared to well-known multilevel inverters are presented. Ref. 8, fig. 7.
References
Malinowski M. et al. A Survey on Cascaded Multilevel Inverters. IEEE Transactions on Industrial Electronics. 2009. Vol. 57. No 7. Pp. 2197–2206. DOI: https://doi.org/10.1109/TIE.2009.2030767
Holmes D. Grahame, Lipo Thomas A.. Pulse Width Modulation For Power Converters Principles and Practice. A JOHN WILEY & SONS, INC., PUBLICATION. 2003. DOI: https://doi.org/10.1109/9780470546284
Rodríguez J., Bernet S., Wu B., Pontt J. O. and Kouro S.. Multilevel Voltage-Source-Converter Topologies for Industrial Medium-Voltage Drives. IEEE transactions on industrial electronics. December 2007. Vol. 54. No 6. Pp. 2930–2945. DOI: https://doi.org/10.1109/TIE.2007.907044
Baker R. H and Bannister L. H. Electric Power Converter, U.S. Patent 3 867 643, Feb. 1975.
Golubev V.V. Two-zone pulse converters of alternating voltage with a high-frequency autotransformer. Pratsi Instytutu elektrodynamiki Natsionalnoi Akademii Nauk Ukrainy . 2007. No 2(17). Pp. 94–100. (Rus)
Lipkovsky K.A. Transformer-key executive structures of alternating voltage converters. Kyiv: Nauk. dumka,
216 p. (Rus)
Kobzev A.V. Multi-zone pulse modulation. Theory and application in electrical energy parameter conversion systems. Novosibirsk: Nauka, 1979. 304 p. (Rus)
David M. Harris, Sarah L. Harris. Digital circuitry and computer architecture. Architecture supplement. 1622 p.
(Rus)
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