Method of Operation and Device for Controlling an Energy Installation with Photovoltaic Modules
OwnerHarald HAUF, Sothachett VANinventors
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Abstract
Method of operating and device for controlling an energy installation comprising photovoltaic modules (401) and inverters (402), in which a selection and control unit (404) selects combinations of connections of the photovoltaic modules and controls a switching unit so as to establish combinations.
Claims12
A method for operating an energy installation comprising at least two photovoltaic modules and an inverter, said method comprising, respectively at pre-determined times, the following steps of:
- measuring the values of the current and/or of the voltage supplied by each photovoltaic module;
- calculating and/or choosing a first electrical magnitude according to the values measured in the event that said photovoltaic modules are connected in a parallel mode and a second electrical magnitude according to the values measured in the event that said photovoltaic modules are connected in a series mode;
- comparing said first and second electrical magnitudes with each other and/or with a reference magnitude;
- then selecting and establishing a connection mode of connecting the photovoltaic modules to the inverter according to the result of the comparison.
A method for operating an energy installation comprising multiple photovoltaic modules and at least one inverter, said method comprising, respectively at pre-determined times, the following steps of:
- measuring the values of the current and/or of the voltage supplied by each photovoltaic module;
- calculating and/or choosing intermediate electrical magnitudes corresponding respectively to multiple various connection modes for connecting said photovoltaic modules in series mode and/or in parallel mode;
- comparing the intermediate electrical magnitudes with each other and/or with a reference magnitude;
- then selecting and establishing a connection mode of connecting the photovoltaic modules to the inverter according to the result of the comparison.
A method for operating an energy installation comprising at least one photovoltaic module and at least two inverters characterized by operating magnitudes and/or various ranges of operating magnitudes, said method comprising, respectively at pre-determined times, the following steps of:
- measuring the values of the current and/or of the voltage supplied by the photovoltaic module;
- calculating and/or choosing an intermediate electrical magnitude according to the values measured;
- comparing this intermediate electrical magnitude with at least one reference magnitude and/or at least one range of reference magnitudes electrically characterizing each of said inverters;
- then linking said module either to one of said inverters or to the other according to the result of said comparison.
A method for operating an energy installation comprising multiple photovoltaic modules and multiple inverters characterized by operating magnitudes and/or various ranges of operating magnitudes, said method comprising, respectively at pre-determined times, the following steps of:
- measuring the values of the current and/or of the voltage supplied by each photovoltaic module;
- calculating and/or choosing intermediate electrical magnitudes according to multiple various connection modes for connecting the photovoltaic modules to the inverters in series mode and/or in parallel mode;
- comparing the intermediate electrical magnitudes with each other and/or with reference magnitudes and/or ranges of reference magnitudes electrically characterizing the inverters;
- selecting and establishing a connection mode of connecting the photovoltaic modules to said inverters for which the intermediate electrical magnitude corresponds approximately to a reference electrical magnitude and/or a range of reference electrical magnitudes electrically characterizing at least one of the inverters.
A method for operating an energy installation comprising multiple photovoltaic modules and multiple inverters characterized by operating magnitudes and/or various ranges of operating magnitudes, said method comprising, respectively at pre-determined times, the following steps of:
- measuring the values of the current and/or of the voltage supplied by each photovoltaic module;
- calculating output electrical magnitudes of the inverters according to multiple various connection modes for connecting the photovoltaic modules to the inverters in series mode and/or in parallel mode and according to operating electrical magnitudes and/or ranges of operating electrical magnitudes electrically characterizing the inverters,
- comparing the output electrical magnitudes calculated,
- selecting and establishing a connection mode of connecting the photovoltaic modules to said inverters for which the calculated output electrical magnitude of at least one of the inverters corresponds approximately to a reference magnitude and/or a range of reference magnitudes electrically characterizing that inverter.
A device for controlling an energy installation comprising multiple photovoltaic modules and at least one inverter, characterized in that it comprises:
- switching means to selectively link said photovoltaic modules to said inverter by connecting them selectively in parallel mode and/or in series mode;
- means for measuring the value of the current and/or of the voltage supplied by said photovoltaic modules;
- and means for managing and controlling the switching means according to the values measured.
A device for controlling an energy installation comprising multiple photovoltaic modules and multiple inverters, characterized in that it comprises:
- first switching means to selectively put said photovoltaic modules into parallel mode and/or into series mode selectively to pairs of intermediate terminals,
- second switching means to selectively link said pairs of intermediate terminals to the inverters in parallel mode and/or in series mode,
- means for measuring the value of the current and/or of the voltage supplied by each photovoltaic module,
- and means for managing and controlling the first and second switching means according to the values measured and/or according to electrical magnitudes or ranges of electrical magnitudes characterizing said inverters.
Dependencies are inferred from the claim text.