Abstract: A DC/AC converter apparatus comprising: input terminals (10) to be connected to a DC power source; a DC/AC conversion unit (11) adapted to receive input DC electrical power via the input terminals and to convert the input DC electrical power into AC electrical power, the DC/AC conversion unit comprising two output terminals (12); two AC backup output terminals (14); a switch arrangement (13) adapted to selectively connect the two AC output terminals to the grid terminals and to the two AC backup output terminals; a control unit (16) associated to the switch arrangement and adapted to: drive the switches of the switch arrangement, sense when an AC voltage at the grid terminals is below a predetermined threshold; and automatically drive the switches of the switch arrangement in such a way to disconnect the two AC output terminals from the grid terminals and to connect the two AC output terminals to the two AC backup output terminals when the AC grid voltage is below a said predetermined threshold.

Abstract: A double-stage inverter apparatus for energy conversion systems (FIG. 1) and control method thereof, adapted to manage the operations of the on-board booster module so as to optimize the overall electrical efficiency of the system. Furthermore, the method according to the present invention allows the operations of said double-stage inverter to be managed when there is only one input channel, when there are multiple input channels called to operate both in parallel and also when there are multiple input channels called to operate independently from each other.

Abstract: The present invention relates to a transient current and voltage protection device for electrical energy conversion systems connected to the power grid, comprising a diode bridge connected between the power grid and the power section of said inverter, upstream of the main filtering inductors.

Abstract: An apparatus for the conversion and optimized management of power produced from renewable sources, and in particular from solar sources, in the household environment and not only, adapted to control the use of power in order to maximize the management cost-effectiveness whilst ensuring the optimization of the energy collection by the photovoltaic generator.

Abstract: A housing for electronic power components, comprising a compartment (13) and a front cover (14) for closing the compartment (13). An insulating air space (18) is defined on the cover (14).

Abstract: The plant comprises: a DC-voltage electric power source (3), 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 (5); a regulation loop (9) 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.

Abstract: The plant comprises: a DC-voltage electric power source (3), 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 (5); a regulation loop (9) 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.

Abstract: Described herein is a system for generating electric power, comprising: an electric-power source (1) having a preferential point of operation; a double-stage inverter (3A, 3B), which transfers the energy from said source to an external a.c.-voltage electrical network (9); a block (5) 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 (10), provided for setting the parameter for control of the boost converter (3A) of the double-stage inverter (3A, 3B) 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.

Abstract: Described herein is a system for generating electric power, comprising: an electric-power source (1) having a preferential point of operation; a double-stage inverter (3A, 3B), which transfers the energy from said source to an external a.c.-voltage electrical network (9); a block (5) 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 (10), provided for setting the parameter for control of the boost converter (3A) of the double-stage inverter (3A, 3B) 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.

Abstract: 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.

Abstract: 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.

Abstract: A current-powered converter includes a current source, a switching section connected to the output of the converter, a dispersed inductance being provided between the switching section, and the converter output. A clamping circuit limits the voltage at the input of the switching section. The clamping circuit comprises a capacitor in which energy is stored during at least one phase of the switching cycle of the switching section, and an inductance by means of which the energy stored in said capacitor is returned to the output of the converter.

Abstract: A current-powered converter includes a current source, a switching section connected to the output of the converter, a dispersed inductance being provided between the switching section, and the converter output. A clamping circuit limits the voltage at the input of the switching section. The clamping circuit comprises a capacitor in which energy is stored during at least one phase of the switching cycle of the switching section, and an inductance by means of which the energy stored in said capacitor is returned to the output of the converter.

Abstract: 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.

Abstract: A method for producing electronic components having a plurality of electrically conductive windings that includes the steps of connecting a plurality of segments of electrically conductive material to a container to form a plurality of half-turns, and mounting the combination of the container and the half-turns on a mounting structure having a plurality of electrically conductive tracks by connecting the half-turns to the plurality of electrically conductive tracks. In alternative embodiments, the segments are formed into half-turns and then connected to a container or a support structure. The resulting combination of the half-turns and electrically conductive tracks forms the plurality of conductive windings. The method may be used to produce coils, inductors, and transformers.