METHOD FOR THEFT RECOGNITION ON A PHOTOVOLTAIC UNIT AND INVERTER FOR A PHOTOVOLTAIC UNIT
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Abstract
The invention relates to a method for recognition of the theft of at least one solar module (5) on a photovoltaic unit with an inverter (1) an intermediate circuit (3), a DC-AC converter (4), at least one solar module (5) connected via connector lines (19) and a control device (8). A signal unit (19) which can be connected to the connector lines (9, 10), for generating and transmitting an electrical signal and a device for measuring and analyzing the signal received from the at least one solar module (5) are provided such that conclusions can be drawn about the theft of a solar module (5) from the received signal. According to the invention, reliable recognition of theft of a solar module (5) can be achieved by designing the signal unit (19) for generating varying electrical signals.
126 Citations
45 Claims
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1-25. -25. (canceled)
- 26. A method for theft recognition of at least one solar module (5) on a photovoltaic unit, said solar modules (5) being connected in normal mode via connector lines (9, 10) to at least one inverter (1), with the voltage of the solar modules (5) being monitored, and in a monitoring mode, when a defined voltage of the solar modules (5) is measured, an electric signal is generated and applied to at least one of the connector lines (9, 10) of the solar modules (5), and the signal received by the at least one solar module (5) is measured and analyzed to assess a theft, wherein in monitoring mode a signal unit (19) integrated in an inverter (1) is activated by a control device (8) of the inverter (1), and wherein electric signals differing in form and amplitude are sent by the signal unit (19) in succession to the at least one solar module (5), with that electric signal, which causes a useful received signal when the solar modules (5) are present, depending on the respective type of solar module (5), being selected as a reference signal for assessing a theft.
- 39. An inverter (1) with an intermediate circuit (3), a DC-AC converter (4), at least one solar module (5) connected via connector lines (9, 10) in normal mode, and with a control device (8), a control unit (18) for measuring the voltage of the solar modules (5), providing a signal unit (19) which can be connected to the connector lines (9, 10) for generating and transmitting an electric signal in a monitoring mode, and a device for measuring and analyzing the signal received by the at least one solar module (5), so conclusions can be drawn about the theft of a solar module (5) from the received signal, wherein the signal unit (19) is integrated in the inverter (1) and connected to the control device (8) of the inverter (1) and designed to generate electric signals that differ in form and amplitude, so that electric signal, which causes a useful received signal when the solar modules (5) are present, depending on the respective type of solar module (5), can be selected as a reference signal for assessing a theft in monitoring mode.
Specification