PV*SOL Expert 6.0 - Manual - Valentin Software
PV*SOL Expert 6.0 - Manual - Valentin Software
PV*SOL Expert 6.0 - Manual - Valentin Software
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<strong>PV*SOL</strong> <strong>Expert</strong> <strong>6.0</strong> - <strong>Manual</strong><br />
The input voltage or the input current of the inverter, when delivering nominal power<br />
output.<br />
Number of MPP Trackers<br />
The number of independently operating MPP regulators.<br />
For multi-string appliances, this value is greater than 1.<br />
Max. Input Current per MPP Tracker [A]<br />
This current limit per MPP tracker should not be exceeded. (Only active if the number of<br />
MPP trackers is greater than 1.)<br />
Max. Recommended PV Output per MPP Tracker[kW]<br />
See Max. Recommended PV Output [kW]<br />
Maximum Input Voltage [V] / Maximum Input Current [A]<br />
This level of voltage or current should not be exceeded, otherwise the inverter will be<br />
damaged.<br />
Upper and Lower Voltage Levels for the MPP Range [V]<br />
Within this voltage range, the inverter is able to control the MPP tracking. The inverter<br />
finds the optimal voltage for the PV generator within this range, so that the generator’s<br />
power output is maximized.<br />
MPP Adjustment Efficiency [%]<br />
The adjustment efficiency provides a measurement of how close the inverter’s working<br />
point is to the PV generator’s maximum power point (MPP). The programme differentiates<br />
between the power ranges 20% of the nominal output. The adjustment<br />
efficiencies are taken into account during simulation in defining the inverter’s<br />
performance ratio.<br />
Characteristic Curve - Inverter<br />
This button opens the Characteristic Curve – Inverter dialog, so that the you can enter the<br />
conversion efficiency depending on the input power. These values should be obtained<br />
from the inverter manufacturer.<br />
The European efficiency is calculated with the following formula:<br />
172<br />
Wg(EU) = 0.03*Wg(5%) + 0.06*Wg(10%) + 0.13*Wg(20%) + 0.1*Wg(30%)+<br />
0.48*Wg(50%) + 0.2*Wg(100%)<br />
Deviation of the Input Voltage from the Nominal Voltage<br />
The inverter’s efficiency characteristic curve is entered for the nominal voltage. If the<br />
inverter is not operated at its nominal voltage, there is a change in the efficiency of the<br />
inverter. Whether the efficiency increases or decreases is dependent on whether the<br />
inverter has a transformer, or not. The following can be used as a rule of thumb:
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