Patent ID: 8305058
Filing Date: 2012-11-06
Classification: G05F,H02J,Y02E

Abstract:
1. A power supply having a maximum power point tracking function, the power supply comprising: a converter section switching input power, and converting the switched input power into predetermined DC power; and a maximum power point tracking section detecting a voltage and a power value of the input power, dividing a variation of the detected power by a variation of the detected voltage, integrating a result of the division, and controlling the switching operation of the converter section according to a value of the integration, wherein the maximum power point tracking section comprises: an operator detecting a current and a voltage of the input power, and operating a voltage variation and a power variation from the detected voltage and current; and a switching controller comparing a predetermined reference signal with a value of the integration of the result obtained by dividing the power variation by the voltage variation, and controlling a switching-on duty ratio of the converter section according to a result of the comparison.