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PHOTOVOLTAIC ENERGY EXTRACTION WITH MULTILEVEL OUTPUT DC-DC SWITCHED CAPACITOR CONVERTERS

United States Patent Application

20120223583
A1
View the Complete Application at the US Patent & Trademark Office
Switched capacitor multilevel output DC-DC converters can be used as panel integrated modules in a solar maximum power point tracking system. The system can also include a central input current-controlled ripple port inverter. The system can implement per panel MPPT without inter-panel communication, electrolytic capacitors or per panel magnetics. A Marx converter implementation of the switched capacitor module is studied. Average total efficiencies (tracking.times.conversion) greater than 93% can be achieved for a simulated 510 W, 3 panel, DC-DC system.
Cooley, John J. (Cambridge, MA), Leeb, Steven B. (Belmont, MA)
Massachusetts Institute of Technology (Cambridge MA)
13/ 039,382
March 3, 2011
STATEMENT OF GOVERNMENT SUPPORT [0001] This invention was made with government support under Grant No. DE-SC0002231 awarded by the Department of Energy. The government has certain rights in this invention.