2024-03-28T18:36:24Z
https://meral.edu.mm/oai
oai:meral.edu.mm:recid/1955
2021-12-13T03:03:00Z
1582963390870:1582967549708
user-uy
Implementation of DC-DC Step-Up Converter Design for 200W Off-Grid Microinverter
Kyu Kyu Mar
Hla Myo Tun
Maung Maung Latt
In this paper, DC-DC step-up converter design for
200W off-grid solar micro-inverter is discussed. Microinverter
system consists of the MPPT section, the DC-to-DC converter
section and the inverter section. The MPPT section detects and
optimizes the power from the solar panels with the help of PIC
microcontroller to achieve the maximum power transfer from
the panel at any instant of the time. There are no power storage
units such as battery and the DC voltage output of MPPT section
is driven to the DC-to-DC converter section, where solar panel
DC voltage is inverted to high frequency high voltage AC voltage
and then converted into high voltage DC voltage which equal to
the peak voltage of the inverter stage output AC voltage. Only a
small size soft ferrite core is used as a power converter
transformer because of the high switching frequency of about 65
kHz is utilized. The galvanic separated auxiliary low voltage DC
for the control circuitry of inverter section is also converted. The
final inverter section generates the 50 Hz 230VAC modified
sinewave output for the utilities. This is a prototype inverter so
that it fabricated on three separate IC strip-boards and these can
be combined in a single well-designed compact PCB board. It can
be modified up to 1000 VA output power with the modifications
of ferrite transformer size and small additional components. The
battery-less system provides the green power generating process
and environmental friendly.
2010
http://hdl.handle.net/20.500.12678/0000001955
https://meral.edu.mm/records/1955