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Switching coordination of distributed dc-dc converters for highly efficient photovoltaic power plants

United States Patent

September 9, 2014
View the Complete Patent at the US Patent & Trademark Office
A distributed photovoltaic (PV) power plant includes a plurality of distributed dc-dc converters. The dc-dc converters are configured to switch in coordination with one another such that at least one dc-dc converter transfers power to a common dc-bus based upon the total system power available from one or more corresponding strings of PV modules. Due to the coordinated switching of the dc-dc converters, each dc-dc converter transferring power to the common dc-bus continues to operate within its optimal efficiency range as well as to optimize the maximum power point tracking in order to increase the energy yield of the PV power plant.
Agamy; Mohammed (Niskayuna, NY), Elasser; Ahmed (Latham, NY), Sabate; Juan Antonio (Ganesvoort, NY), Galbraith; Anthony William (Wirtz, VA), Harfman Todorovic; Maja (Niskayuna, NY)
General Electric Company (Niskayuna, NY)
13/ 097,196
April 29, 2011
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH & DEVELOPMENT This invention was made with U.S. Department of Energy support under contract number DE-EE0000572. The Government has certain rights in the invention.