1. A distributed power harvesting system comprising: a plurality of DC power sources with respective DC outputs adapted for interconnection into an interconnected DC power source output; a converter including input terminals adapted for coupling to said interconnected DC power source output, a circuit loop setting the voltage and current at the input terminals of the converter according to predetermined criteria, and a power conversion portion for converting the power received at the input terminals to an output power at the output terminals; and a power supplier coupled to the output terminals, the power supplier including a control part maintaining the input to the power supplier at a predetermined value.