Patent ID: 8461798
Filing Date: 2013-06-11
Classification: G05F,H02J,Y02E

Abstract:
1. An apparatus for extracting a maximum power from a solar cell, the apparatus comprising: a solar cell configured to produce power from solar energy; a maximum power extractor configured to generate a pulse width modulation signal to extract the maximum power from the solar cell; and a DC-DC converter configured to adjust an amount of a current generated from the solar cell according to the pulse width modulation signal, wherein the maximum power extractor is configured to detect a voltage generated from the solar cell and the current generated from the solar cell, change an amount of the detected voltage and an amount of the detected current generated from the solar cell to provide an equalized comparison basis for an equalized voltage value and an equalized current value, compare the equalized voltage value with the equalized current value to generate the pulse width modulation signal, and adjust a ratio of an on-time to a period of the pulse width modulation signal according to a result of the comparison.