Solar power plant

Details Solar power plant Solar power plant

2009-06-15

2011-11-08

Barnie, Rexford (Department: 2836)

Electrical transmission or interconnection systems

Plural supply circuits or sources

Plural converters

C323S361000

Reexamination Certificate

active

08053930

ABSTRACT:
A solar power plant with a plurality of photovoltaic modules for generating a power to be fed in a multi-phase grid, several photovoltaic strings, which are allocated to different phases, being connected to a primary side of a mains transformer and at least one inverter for converting the direct voltage generated by the photovoltaic modules into an alternating mains voltage conforming to the grid being provided and said mains transformer being provided with a neutral conductor and with a grounded terminal, is intended to be improved in such a manner that the life of the photovoltaic modules, in particular in case of thin-film modules, is increased, allowing for high conversion efficiency of the inverters at low wiring costs. This is achieved in that an additional direct voltage source is inserted between the neutral conductor and ground in such a manner that the potential of the photovoltaic strings is displaced and that a bias voltage is set, which is different from zero volt.

REFERENCES:
patent: 2002/0085325 (2002-07-01), Suzui et al.
patent: 2007/0179720 (2007-08-01), Becker et al.
patent: 202006008936 (2006-08-01), None
patent: 1841050 (2007-10-01), None

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