关键词: 光伏模拟电源;输出特性曲线;BUCK变换器

Abstract:

In order to test the maximum power point performance of the photovoltaic inverter,this paper designs a  photovoltaic analog power supply.Analog power is mainly composed of rectifier filter circuit and DC/DC power component.Rectifier filter circuit converts alternating current into DC and the switch power supply achieves the decompression function.The output voltage sampling is fed into the error comparator to be compared with the voltage across the controller RAM to control the output current and voltage for it to work in the corresponding I-Vcurve.The proposed design can simulate the solar pv curve by manually inputting temperature and sunshine intensity.

Key words: photovoltaic analog power;output characteristic curve;BUCK converter