Patent ID: 9647488
Date: 2017-05-09
CPC Classifications: G05F,H02J,Y02E

Claim:
1. A power supply apparatus comprising: a solar cell module including at least one solar cell to absorb sunlight; a power converter to convert a power output from the solar cell module and to supply the converted power to a load; and a driving controller configured: to measure the power output from the solar cell module, to determine a driving period of time for which the power converter is driven based on a difference between the measured output of the solar cell module and an output from the power converter, and to control the power converter having a preset duty ratio to be driven for the determined driving period of time, wherein: the driving controller, using the preset duty ratio, adjusts the driving period of time to be increased and decreased in response to the difference between the measured output of the solar cell module and the output from the power converter increasing and decreasing, respectively.