PHOTOVOLTAIC SYSTEM WITH SELECTIVE MPP MISMATCH
First Claim
1. A method for operating a photovoltaic system having an inverter at whose input terminals a DC output voltage of the photovoltaic generator is applied and whose output is connectable to a supply network, and having a battery bank connected in parallel to the input terminals, the method comprising:
- adjusting a maximum power point of the photovoltaic generator via a regulating element of the inverter;
operating selectively mismatched the photovoltaic generator with the turning off of the adjusted regulation to the maximum power point in order to provoke a discharge current from the battery bank to the input terminals of the inverter if a predefinable minimum power of the photovoltaic generator is not achieved.
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Accused Products
Abstract
A method for operating a photovoltaic system provides, with the turning off of the otherwise adjusted regulation to the maximum power point MPP, to make a selective mismatching at the inverter, in order to cause a battery current, which is added to the system current. As a result, an additional energy source to maintain a minimum feed power is achieved during a rapidly changing cloud pattern.
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Citations
10 Claims
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1. A method for operating a photovoltaic system having an inverter at whose input terminals a DC output voltage of the photovoltaic generator is applied and whose output is connectable to a supply network, and having a battery bank connected in parallel to the input terminals, the method comprising:
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adjusting a maximum power point of the photovoltaic generator via a regulating element of the inverter; operating selectively mismatched the photovoltaic generator with the turning off of the adjusted regulation to the maximum power point in order to provoke a discharge current from the battery bank to the input terminals of the inverter if a predefinable minimum power of the photovoltaic generator is not achieved. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A device for operating a photovoltaic generator, the device comprising:
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an inverter, at whose input terminals a DC output voltage of the photovoltaic generator is applied and whose output is connectable to a supply network; a battery bank connectable in parallel to the input terminals; a regulating element of the inverter configured to adjust a maximum power point of the photovoltaic generator; a disconnect switch via which the battery bank is connected to the inverter; and a control/regulating device that sets the maximum power point by the regulating element of the inverter to a predefinable voltage and that closes the disconnect switch during a shortfall of a predefined minimum power of the photovoltaic system. - View Dependent Claims (8, 9, 10)
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Specification