Technology specifities is a free text (up to 5 lines) for additional descriptions of the Inverter, like the technology, operating conditions, display and data exchange possibilities, etc.
Two "operational" specifications may be defined using these texts:
- When mentioning "SolarEdge Architecture", this activates this particular operating mode in the Design and simulation process.
- When mentioning "Bi-polar" or "Bipolar", this means that the inverter has bi-polar inputs defined as +/- voltages. This allows to define strings of twice the voltage.
Sizes obviously defines the sizes and weight of the inverter.
Operating Conditions - Behaviour at limits gives access to additional parameters which are usually only applicable to very old devices - of for special analysis purpose.
| Operating mode | will always be "maximum power point", i.e. the input electronics is continuously searching for the best operating point on the array characteristics, giving the maximum power (I * V). |
| Although the fixed voltage mode is quite obsolete with modern inverters, it is still supported by PVsyst. |
| NB:The SolarEdge architecture uses fixed voltage inputs, but connected to strings of their suited DC-DC power optimizer. |
| Behaviour at Pnom can have the following options: |
| Power limitation: during overload (too much available energy at MPP), any modern inverter will limit the input power at the nominal value by displacing the operating point on the array I/V curve. This mode gives rise to usually low losses (only the excess virtual energy during very high productions), allowing to oversize the nominal array power with respect to the inverter power (economic optimisation, depending on the system properties). |
| - | Cut : when reaching overload, some old inverter models were simply cutting the PV production by safety (i.e. the array current was zero and the array voltage attained Voc). |
| - | Cut up to evening : same case as above, but the inverter was not able to start again as long as the input was not null. |
Behaviour at Vmin/Vmax :
| - | Limitation: as above, in modern inverters the operating point is clipped at the limit voltage when MPP goes outside the window. |
| Cut: in some old models the inverter production was stopped when encountering such conditions. |
