Photovoltaic ladder inverter

Details Photovoltaic ladder inverter Photovoltaic ladder inverter

2009-02-20

2011-12-20

Fureman, Jared (Department: 2836)

Electrical transmission or interconnection systems

Plural supply circuits or sources

Circulating- or inter-current control or prevention

C307S063000

Reexamination Certificate

active

08080899

ABSTRACT:
Techniques for DC-to-AC conversion are disclosed, and may be embodied in a solar inverter device that can operatively couple to a power grid. The device includes a photovoltaic (PV) stack including series-connected PV modules. Each PV module is associated with a capacitor for storing output of that PV module. A positive terminator circuit switches a negative end of the PV stack to ground during positive half of grid cycle, and a negative terminator switches a positive end of the PV stack to ground during negative half of grid cycle. A connecting branch couples each PV module output to a common bus, each branch including control circuitry configured to selectively couple the corresponding PV module output to bus. During a first half of grid cycle, some of the capacitors discharge to the grid while a balance of the capacitors charge in preparation for discharge during a second half of grid cycle.

REFERENCES:
patent: 4424557 (1984-01-01), Steigerwald
patent: 5459655 (1995-10-01), Mori et al.
patent: 7099169 (2006-08-01), West et al.
patent: 2005/0139259 (2005-06-01), Steigerwald et al.
patent: 2005/0275386 (2005-12-01), Jepsen et al.
patent: 2007/0236187 (2007-10-01), Wai et al.
patent: 2009/0121549 (2009-05-01), Leonard
International Search Report and Written Opinion dated Apr. 17, 2009 issued in related International Patent Application No. PCT/US2009/034723.

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