Volume 02 Issue 11-2022
77
International Journal of Advance Scientific Research
(ISSN
–
2750-1396)
VOLUME
02
I
SSUE
11
Pages:
77-82
SJIF
I
MPACT
FACTOR
(2021:
5.478
)
(2022:
5.636
)
METADATA
IF
–
7.356
A
BSTRACT
In the work in the MATLAB program, an IGBT-transistor inverter was modeled to improve the energy
efficiency of a mobile uninterruptible power supply. In order to improve the efficiency of the
uninterruptible power supply, its principal and structural diagrams have been developed.
K
EYWORDS
Electronic device, MATLAB program, IGBT transistor, simulation, inverter, harmonic analysis, spectral
analysis.
I
NTRODUCTION
In power supplies that consume direct current
sources, for example, batteries, solar cells, etc.,
transistor converters are considered the main
functional node that converts one nominal DC
voltage into a different nominal DC voltage and its
polarity. These switches are galvanically isolated
from the primary supply bus. Also, transistor
voltage converters are considered central
Journal
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Copyright:
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4.0 licence.
Research Article
INVERTER MODELING IN IMPROVING THE ENERGY
EFFICIENCY OF A MOBILE UNINTERRUPTED SUPPLY SOURCE
Submission Date:
November 05, 2022,
Accepted Date:
November 15, 2022,
Published Date:
November 30, 2022
Crossref doi:
https://doi.org/10.37547/ijasr-02-11-11
M.R. Madaminov
Master's Student, Fergana Branch Of Tuit, Fergana, Uzbekistan
X.T. Yuldashev
Doctor Of Philosophy (Phd) In Physics And Mathematics Sciences, Associate Professor, Fergana Polytechnic
Institute, Fergana, Uzbekistan
Volume 02 Issue 11-2022
78
International Journal of Advance Scientific Research
(ISSN
–
2750-1396)
VOLUME
02
I
SSUE
11
Pages:
77-82
SJIF
I
MPACT
FACTOR
(2021:
5.478
)
(2022:
5.636
)
METADATA
IF
–
7.356
functional nodes in transformerless input power
sources. These voltage converters can also
consume energy from the AC network. Also, one-
cycle and two-cycle transistor constant voltage
converters are used in power sources [1-4].
In increasing the efficiency of any electronic
device, the operating conditions, load and
elements of this device are of great importance. In
order to improve the efficiency of the mobile
uninterruptible power supply source, taking into
account its operation time, the sinusoidal nature
of the output voltage, and the provision of high-
quality energy supply to devices, the inverter was
modeled in the MATLAB program, the necessary
transistor was selected, and a high-quality voltage
was obtained at the output. [1-4]
Converters that convert direct current into
alternating current and operate on an
autonomous load are called inverters. Depending
on the number of voltage phases at their outputs,
they are divided into: single, three, multi-phase
inverters. Depending on the construction of the
circuits, they are divided into zero-removed,
bridge-type and semi-bridge-type [5-6].
Figure 1. Modeling scheme
Modeling of IGBT transistor inverters. Model
universal bridge and frequency (1080 Hz) and
modulyatsya index (0.8) selected PWM pulse
generator is found externally from discrete
blocks. Harmonic analysis is performed using the
Powergui/FFT tool (Figure 2).
Volume 02 Issue 11-2022
79
International Journal of Advance Scientific Research
(ISSN
–
2750-1396)
VOLUME
02
I
SSUE
11
Pages:
77-82
SJIF
I
MPACT
FACTOR
(2021:
5.478
)
(2022:
5.636
)
METADATA
IF
–
7.356
Figure 2. Bridge and control signal parameters
The installed parameters of the load and the
source are presented in Figure 3. The input and
output oscillograms of the inverter signals
obtained as a result of modeling are presented in
Figure 3.
Now, to perform the electrical calculation, first of
all, it is necessary to work with the initial data,
these are the voltage of the supply source (in our
case, the car battery): U0=12 V; transformer
output voltage UKE=25 V; the maximum current
of the secondary winding I2=2 A; the generation
frequency of the converter is f=10 kHz [7-13].
Volume 02 Issue 11-2022
80
International Journal of Advance Scientific Research
(ISSN
–
2750-1396)
VOLUME
02
I
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11
Pages:
77-82
SJIF
I
MPACT
FACTOR
(2021:
5.478
)
(2022:
5.636
)
METADATA
IF
–
7.356
Figure 3. Input and output oscillograms of inverter signals
Figure 4. Spectral composition of inverter output signals
After modeling, spectral analysis can be
performed in the range from 0 to 5000 Hz. (Figure
4).
Tests have shown that if the AB is correctly
connected to the device, the mains voltage is not
allowed to be connected to the inverter output,
and the load is connected with a suitable power,
the backup power supply has a continuous
working life and does not require additional
maintenance. can't. The device must always be
connected to the mains voltage. AB is
automatically disconnected from the charging
circuit of a fully saturated battery, and when the
voltage decreases, it is connected to the charging
device again. If there is no voltage in the network
for a long time, it is partially charged from the AB
solar battery during daylight hours. The test
results showed the following:
1. When there is no voltage in the network and 90
A/s, AB is used as the primary energy source, the
reserve supply source of 300-350 W keeps the
device in working condition for 2.5-3 hours.
Volume 02 Issue 11-2022
81
International Journal of Advance Scientific Research
(ISSN
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2750-1396)
VOLUME
02
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Pages:
77-82
SJIF
I
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FACTOR
(2021:
5.478
)
(2022:
5.636
)
METADATA
IF
–
7.356
2. On an outdoor day, a 100 W solar battery
restores (40÷50%) the energy used by AB for 6-7
hours.
3. In field conditions, in the absence of a voltage
network, the capacity of the solar battery is 2-3
times, the AB capacity is 300 A/s. it would be
appropriate to raise it to
From this tested mobile uninterruptible power
supply, with the appropriate selection of AB
capacity, solar battery and inverter power,
telecommunications
communication,
radio
stations, medical systems, household radio
electronic equipment and also control systems of
complex technical objects can be supplied with
quality power. can be used for supply.
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