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<< Click to Display Table of Contents >> Inverter overcharging |
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Behaviour at power overcharging (i.e. when the available PV power at MPP will lead to overcoming the nominal output power (PmomAC) of the inverter:
| Limitation : | the PV-field's running point moves along the I/V curve (towards higher voltages) in order to limit the output power at the nominal value. This mode gives rise to usually low losses (only the excess virtual energy between MPP and effectively used energy is lost), 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 inverters 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 power was not null, i.e on next morning....