Patent ID: 7394237
Filing Date: 2008-07-01
Classification: G05F,H02M,Y02B,Y10S

Abstract:
1. A maximum power point tracking method for a solar power system, comprising: connecting a DC/DC converter with a solar cell array, and including a controller actuating the DC/DC converter to perform an active resistance characteristic; a maximum power point tracking circuit adjusting the active resistance of the DC/DC converter; monitoring a change of an output power of the solar cell array in determining a direction for adjusting the active resistance of the DC/DC converter; and the maximum power point tracking circuit repeatedly adjusting the active resistance of the DC/DC converter to track a maximum power point of the output power of the solar cell array; wherein if the change of the output power of the solar cell array is positive, the active resistance of the DC/DC converter is adjusted in the same direction; but, conversely, if the change of the output power of the solar cell array is negative, the active resistance of the DC/DC converter is adjusted in an opposite direction.