Name
Kravchenko Nikolai Aleksandrovich
Scholastic degree
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Academic rank
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Honorary rank
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Organization, job position
Kuban State Agrarian University
Web site url
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Articles count: 2
Analysis of scientific literature has shown a promising
direction in energy saving and in increasing of
efficiency of power supplies remote from external
networks in Russia is the application of solar
photovoltaic power plants. The level of solar radiation
on the territory of Russia varies widely from 810
kWh/m2 per year in remote Northern areas to 1,400
kWh/m2 per year in southern areas. We have revealed
their main advantages and disadvantages of solar
photovoltaic power plants, as well as the purpose, basic
features, features selection and operation of inverters
and batteries. We have also given a generalized block
diagram of three types of solar photovoltaic power
plants: autonomous, standby, network. The peculiarities
of their work have been presented. To improve the
reliability of operation of solar power plants we need to
design them according to the modular principle.
Modular aggregation has to be applied for stand-alone
inverters, where the input and output filters, power
electronic circuit and system voltage regulation and
protection represent the functional module elements. It
is possible to increase significantly the reliability of
autonomous inverters and solar PV systems in the
complex, using one-phase and three-phase transformers
with rotating magnetic field in their design. The
advantages and the disadvantages, the peculiarities of
the solar PV plants discussed in the article will allow to
develop their structural and circuit designs with
improved maintenance characteristics in the future
Widespread in autonomous systems, including
uninterrupted power supply systems, there are power
static (electronic) convertors: rectifiers and inverters,
used to match the parameters of the electric power
source and the load; they also have a function of voltage
stabilizers. Important question is the calculation of key
performance criteria at the design stage: power losses,
efficiency, reliability, weight and size (for electrical
transport systems). The article discusses the
methodology of the simplified calculation of the basic
criteria of efficiency of inverters and rectifiers. There
are schematic electrical diagrams of power rectifiers
and inverters, and the basic analytical expression for a
simplified calculation of the basic criteria of efficiency
of the converters, including their output filters. Each
year, we improve the technical characteristics of the
probes using new element base, allowing reducing the
level of electromagnetic interference generated by
power electronic devices. We have also shown
perspective directions of the development of power
converter technology by using one-phase and threephase
transformers with rotating magnetic field in their
creation (therefore we increase reliability of operation
and efficiency). A promising direction is the
construction of converters and autonomous systems in a
modular complex, where (in addition to increased
system reliability) we simplify its operation, including
service