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AssigneeABB Technology AG
InventorsSilvio SCALETTI, Sauro MACERINI, Claudio GUARDUCCI, Leonardo CANACCI
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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.
A control method for double-stage inverters comprising an input stage provided with at least one input channel connected to at least one photovoltaic generator and comprising at least one booster module, an output stage in turn comprising an inverter module, an energy storage module, associated with said input and output stages so as to form the load and supply, respectively, and a control module adapted to adjust the operation of said apparatus in MPPT (Maximum Power Point Tracking) mode, characterized in that said at least one booster module is switched off when the voltage at the input of said at least one booster module is greater than or equal to the minimum voltage required to supply and properly operate said inverter module according to the requirements of said AC voltage distribution network.
A double-stage inverter apparatus for energy conversion systems comprising an input stage provided with at least one input channel connected to at least one photovoltaic generator, an output stage in turn comprising an inverter module with the output associated with the AC voltage distribution network, an energy storage module, associated with said input and output stages so as to form the load and supply, respectively, and a control module adapted to adjust the operation of said apparatus according to the user settings and to the conditions of the inputs and the output of said apparatus and to adjust the operation of said apparatus in MPPT (Maximum Power Point Tracking) mode, said input stage comprising at least one booster module, adapted to ensure that the voltage value of said energy storage module is greater than or equal to the minimum level allowed so that said inverter module may operate properly, and adapted to set an optimal operating voltage value at said apparatus input according to said MPPT mode, characterized in that control module is further adapted to switch off said at least one booster module-when the voltage at the input of said at least one booster module is greater than or equal to the minimum voltage required to supply and properly operate said inverter module according to the requirements of said AC voltage distribution network.
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Dependencies are inferred from the claim text.