Open AccessMethodological problems of replacing low-voltage AC networks with DC networks
Author(s) -
Larisa Nikolaevna Titova,
В. А. Сергеев
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1035/1/012041
Subject(s) - reliability (semiconductor) , reliability engineering , computer science , voltage , converters , electric power , electric power quality , quality (philosophy) , power (physics) , electrical engineering , power quality , engineering , philosophy , physics , epistemology , quantum mechanics
The paper discusses the prospects for replacing low-voltage AC power grids of industrial frequency with DC power grids in order to introduce energy-saving equipment and technologies. The modern achievements in the field of energy-saving electric drives are analyzed in detail, which make it possible to introduce constant voltage electric networks attractive for investments. The generalized analysis can be performed using the synergetic criterion of the technical and economic efficiency of innovation. To use such a criterion, all indicators to be analyzed must be presented in dimensionless form. We propose to consider separately the technical and operational groups of the generalized technical characteristics of AC and DC electric drives. The selected subset of groups of parameters of electric drives is justified from the point of view of regulatory and technical documents currently in force. This methodology seems to be more objective than the existing industry methodology for assessing product quality based on functional analogues of products being developed. With a synergetic approach, any characteristic is invariant relative to the others, which confirms the objectivity and reliability of the comparison method. The system of indicators is necessary and sufficient, both for technical assessment and for the creation of new designs and the development of directions for the design of electric drives. In conclusion of this work, we give examples of the implementation of such an approach by comparing the achieved indicators of quality and operational reliability of electromechanical energy converters produced by domestic enterprises.