Power-one Italy S.p.a.

Magnetek, S.p.a.

Sauro Macerini

Danio Nocentini

David Martini

Lorenzo Cincinelli

Giovanni Spagnuolo

Massimo Vitelli

Nicola Femia

Giovanni Petrone

Filippo De Rosa

Silvio Scaletti

Antonio Sirianni

The plant comprises: a DC-voltage electric power source (), whose operating conditions vary as a function of at least one uncontrollable quantity, for each value of the uncontrollable quantity the source presenting a characteristic curve of the supplied power as a function of a controlled quantity, wherein each characteristic curve presents a maximum for an optimal value of said controlled quantity; a power conditioning circuit (); a regulation loop () to adjust the controlled quantity maximizing the power supplied by the source when said uncontrollable quantity varies. The regulation loop is de-signed in such a way as to determine whether, for the actual value of said uncontrollable quantity, the actual value of the controlled quantity (V.in) is greater or lower than the optimal value and to generate a regulation signal (V.in-REF) to modify the actual value of the controlled quantity towards the optimal value.

Method and system for extracting electric power from a renewable power source

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

An electrical power supply system connected to an electrical grid, includes at least one source of electrical power, an inverter which receives power from the electrical source and delivers power to a local load, and a connection to the electrical grid. The system also includes a control unit for controlling the inverter, which interrupts the delivery of power by the inverter when at least one electrical parameter of the system exceeds a threshold value. The system also includes anti-islanding logic which detects at least one symptom of an islanding condition of the system and, when the symptom is detected, to cause a variation in the power level delivered by the inverter.

Anti-islanding method and system for distributed power generation systems

The DC/DC converter provides an output current which is periodically variable over time and includes a control network which generates a variable reference signal for the input current which is substantially smoothed and obtained from the difference between the output voltage and a reference voltage. The substantially smoothed reference signal causes a variation in the duty cycle of the converter in order to compensate for the variation in the output voltage resulting from a variation in the output current.

DC/DC converter with filter for limiting the oscillation of the input current and associated method

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Arezzo, Italy

Sauro Macerini