Alternating current, grid connected electronics, photovoltaic inverter systems, PVs
Connecting photovoltaics to the AC distribution system and power suppliers
Power losses in photovoltaic inverters.
This invention proposes a new circuit topology and control method for an AC connected power converter. Here the DC connected inverter transforms the DC source into high frequency AC, with the transformation stage providing both voltage gain and appropriate impedance shaping. The cycloinverter is controlled to modulate the transfer of the high frequency resonant current in response to the changing voltage of the AC port. The buffer-block acts in a similar manner, but is controlled to absorb or deliver power to the storage port which compensates for the power mismatch between the DC and AC ports.
US Patent Application 13/011,317 filed 1/21/2011
PCT Patent Application PCT/US2011/022056 filed 1/21/2011
Last revised: February 21, 2012