Power-one Italy S.p.a.

Universitá Degli Studi Di Salerno

Giovanni Petrone

Nicola Femia

Giovanni Spagnuolo

Massimo Vitelli

Sauro Macerini

Luigi Egiziano

Danio Nocentini

Domenico Granozio

Filippo De Rosa

Antonio Sirianni

Olga Sacco

Walter Zamboni

Dionisio Pilerci

The present invention concerns a single stage inverter device for power converters, comprising switching means (M-M) capable to periodically connect an energy source, in particular a photovoltaic one, to an electric network or grid, the switching means (M-M) being controlled by controlling electronic means operating according to a single switching cycle control of the switching means (M-M), the operative and circuit device parameters being such to fulfill a series of constraints simultaneously optimizing both the maximum power point tracking or MPPT (Maximum Power Point Tracking) and the output power factor or PF-out (Power Factor-output) for one or more operation conditions. The present invention further concerns the related method of controlling and the related method of scaling such device.

Single stage inverter device, and related controlling method, for converters of power from energy sources, in particular photovoltaic sources

Described herein is a system for generating electric power, comprising: an electric-power source () having a preferential point of operation; a double-stage inverter (A,B), which transfers the energy from said source to an external a.c.-voltage electrical network (); a block () for identification of the preferential point of operation, which supplies a reference signal according to the conditions of operation of the electric-power source and to the preferential point of operation of said source; a corrector block (), provided for setting the parameter for control of the boost converter (A) of the double-stage inverter (A,B) as a function of the reference signal and of a signal of actual operation of said electric-power source, and for maintaining the source in the proximity of the preferential point of operation.

System for producing electric power from renewable sources and a control method thereof

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Fisciano, Italy

Giovanni Petrone