Analysis of output characteristics of AC module

摘要

AC module is the photovoltaic module with inverter. It can use the power output of module effectively and can reduce the system cost by mass production. Several companies have already commercialized it in Europe. Authors measured and evaluated the output characteristics of AC module that combined the module of Showa Cell and the inverter of NKF (Netherlands). As the results, the following things were found. 1) The relationship between solar cell and environmental factor was clarified. The error of approximation formula was less than 10%. 2) The relationship between solar cell output and its temperature was clarified. The error of approximation formula was less than 5%. 3) The minimum, maximum and average value of comprehensive efficiency in August was 0.82, 0.89 and 0.88. 4) The average coefficient of utilization of module in August was about 15%. 5) When inverter capacity is made into 80% of module capacity, the amount of power in August decreases 0.2%.