DESIGN OF TWO-STAGE MICROINVERTER BASED ON MODIFIED CUK CONVERTER AS BASIC CELL

• Main Author: Alif Kirana Ramadhan, Ghozi
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/79489
• Institution: Institut Teknologi Bandung

The integration of renewable energy in the form of photovoltaics plays a crucial role in dealing with the issue of the energy accessibility for people living in remote areas. Indonesia is an archipelagic country; with these geographical conditions it is a challenge to provide electrical energy for people lives in remote areas which in turn will improve their life quality. The electricity generated by photovoltaic systems is in direct current (DC) form while common household loads are available in alternating current (AC) form, therefore a DC-AC converter is required to interface with commonly found household loads. Conventional, yet simplest, DC- AC converter requires high DC voltage to be able to convert it into 220 Vac. This situation is not convenient for low power application for small household in remote area that only requires a single solar panel as in micro-converter PV system. This paper proposes modified Cuk converter-based two-stage microinverter topology design that able to directly convert low voltage DC voltage output of single PV panel to 220 Vac 50 Hz. To anticipate the disturbance due to change of solar irradiance that also proposes closed-loop system to keep the constant 220 Vac 50 Hz output. It can be shown that the proposed topology and control method is successfully generate constant 220 Vac 50 Hz output voltage from single PV panel input under irradiance disturbance conditions.