Channel configuration examples

PV generator characteristics MPPT configuration Notes

The photovoltaic generator consists of strings having a different number of modules in series from each other. The photovoltaic generator consists of strings that have different installation conditions from each other. MPPT configuration has to be INDEPENDENT A NECESSARY condition so that the two MPPTs can be used in independent mode is for the photovoltaic generator connected to each of the inputs to have a power lower than the power limit of the single input channel AND a maximum current lower than the current limit of the single input channel.

The photovoltaic generator consists of strings having the same number of modules in series as each other.

Possibility of choosing between the configuration with MPPT as INDEPENDENT or PARALLEL

A NECESSARY condition so that the two MPPTs can be used in independent mode is for The photovoltaic generator consists of strings that have the same installation conditions, that is to say, all the strings have the same inclination from the horizontal and the same orientation to the SOUTH. The photovoltaic generator connected to each of the inputs has a power lower than the power limit of the input channel AND a current lower than the current limit of the input channel. the photovoltaic generator connected to each of the inputs to have a power lower than the power limit of the input channel AND a maximum current lower than the current limit of the input channel. An ADVISABLE (*) condition so that the two MPPTs can be connected in parallel is for the photovoltaic generator connected to the two inputs to consist of strings made by the same number of modules in series and for all the modules to have the same installation conditions. (*) This condition is advisable from the point of view of the energy production of the system, not from the point of view of inverter operation. The photovoltaic generator consists of strings having the same number of modules in series as each other.

MPPT configuration has to be PARALLEL

A SUFFICIENT (*) condition so that the two MPPTs must be used in parallel mode is for The photovoltaic generator consists of strings that have the same installation conditions, that is to say, all the strings have the same inclination from the horizontal and the same orientation to the SOUTH. The photovoltaic generator connected to each of the inputs has a power higher than the power limit of the input channel OR a current higher than the current limit of the input channel. the photovoltaic generator connected to each of the inputs to have a power higher than the power limit of the single input channel OR a maximum current higher than the current limit of the single input channel. An ADVISABLE (**) condition so that the two MPPTs can be connected in parallel is for the photovoltaic generator connected to the two inputs to consist of strings made by the same number of modules in series and for all the modules to have the same installation conditions. (*) This condition is sufficient from the point of view of the energy production of the system, not from the point of view of inverter operation. (**) This condition is advisable from the point of view of the energy production of the system, not from the point of view of inverter operation.