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<< Click to Display Table of Contents >> Sungrow optimizer |
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See Power Optimizers for generalities.
The Sungrow Power optimizers are module-level buck-only optimizers. These are only compatible with some Residential and Commercial Inverters of the Series SG... and SH... of Sungrow.
The optimizer has to permanently communicate with its inverter, through the DC connections. The inverter controls the operating mode of the optimizer; namely the optimizer output voltage remains null when the inverter is not working in normal conditions. The inverter also ensures the voltage limitation of the optimizer array.
It allows module-level monitoring, including Module-level I/V scanning and diagnosis.
Use within PVsyst
The compatibility conditions (authorized Inverters, Minimum and Maximum number of optimizers, maximum PV power per string) are fully managed / checked within the "System" dialog. In the inverter's list, when choosing an optimizer the suited inverters will appear in green, and the other Sungrow inverters in blank, meaning that they are not compatible.
Moreover, you have to check that the chosen PV module is compatible with the optimizer's input specifications (Voltage, Current, Power). If not, the Optimizer background in the dropdown list will remain red. You can open the optimizer for understanding what is wrong with your choice.
The limits specified by Sungrow for each association Optimizer-inverter are hard-coded in PVsyst, and cannot be overcome.
Limitations:
| - | Although Sungrow allows to mix modules with optimizers (likely to be shaded) and modules without optimizers in a string, this opportunity is not supported in PVsyst. |
| - | The optimizers principle makes possible to mix modules of a same string in different orientations. However this is not yet implemented in the PVsyst simulation. |