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Referring to the Department of Meteorology, Climatology and Geophysics in Medan, North Sumatera, there is missing data of solar irradiance for the year of 2014. This paper is presented to estimate the solar irradiance using Hargreaves method based on the latitude and the monthly minimum and maximum temperature of the missing data. The temperature and estimated solar irradiance were applied to observe the output characteristics of a photovoltaic (PV) module. These parameters were used to assess the potential of the transformerless photovoltaic inverter (TPVI). Simulation results show that the average monthly solar irradiation was 6.98 kWh/m2 using Hargreaves method. This was more than twice greater the normal solar radiation (3 kWh/m2), which indicated that the sky in Medan was clear and had very high solar irradiation intensity for the year of 2014. These findings suggest there are a big potential of solar irradiation for generating the TPVI in Medan.

aip conference proceedings

Output characteristics of photovoltaic module in Medan based on estimated solar irradiance using hargreaves method for application assessment of transformerless photovoltaic inverter