Name
Bondarchuk Andrey Viktorovich
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
In the autonomous power supply systems there are
widely used frequency converters that are able to
simultaneously increase or decrease the frequency of
the current and voltage stabilizing power supply.
These positive properties of frequency converters can
improve the operational and technical characteristics
of the autonomous power supply system in the
complex. The article suggests a functional diagram of
a frequency converter performed on reversible
rectifiers. We have presented timing diagrams
illustrating the principle of its operation. The article
also deals with two functional scheme of direct
frequency converters executed on single-phase, threephase
transformer with a rotating magnetic field. The
principle of operation of these schemes has been also
discussed in the timing diagrams. The proposed
technical solutions for frequency converters contain a
smaller amount of power electronic devices that make
it possible, thereby reducing the level of
electromagnetic interference, increase the efficiency
and reliability of performance inverters. The
considered scheme of frequency converters, can
improve the technical characteristics of the
autonomous power supply systems in the complex. We
can significantly improve the performance of power
systems through the use of modular aggregating
principle of the basic functional units of an
autonomous system
The article describes the main block diagrams of three
types of uninterruptible power supply: backup;
interactive; double conversion. The main functions
are: the function backup or emergency source of
electrical power; the function of protective devices
(from an overload currents and short-circuit);
improving the quality of the power supply voltage.
Alsoб we have disclosed the features of the advantages
and disadvantages of uninterruptible power supplies
three groups: Off-Line / Stand-By / back-up UPS
(passive - reserve); Line-Interactive (line interactive
type); On-Line. The article discloses new approaches
to structural and schematic-based uninterruptible
power supply, including at use of renewable energy, so
that the failure of one of the sources does not lead to
exit from the operation of the entire of power supply
system. As a rule, such systems are built on a modular
principle. It is shown that now for remote users from
external networks is advisable to apply a system
autonomous power supply, representing the totality of
sources and converters of electric power, ensuring
uninterrupted power supply to consumers. We have
presented a typical structure of autonomous systems
and given an option of the block diagram of the system
and are given explanations and principles of its work.
Significantly improves performance reliability of
autonomous systems using the modularity of its main
functional units. In addition, to increase the efficiency
of the system can be through the use in the
construction of transformers with static converters
rotating magnetic field. To improve the weight, which
is important for the transport systems, it is necessary to
use links with the intermediate high-frequency electric
power conversion in static converters