2026-06-25T05:21:44Z 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