Device and method for determining and using a surplus of available electrical power generated by a solar photovoltaic generator

Abstract

The invention relates to a device (S) for managing a surplus (P3) of photovoltaic power available at the terminals of a photovoltaic generator (DE) provided with photovoltaic panels (PV) that are capable of supplying power to fixedpower electrical appliances (AF) and variable-power electrical appliances (AV) connected to said photovoltaic generator (DE), said surplus of power (P3) being equal to the difference at each time t between the maximum potential electrical power (P1) that said photovoltaic generator (DE) could produce taking into account its illumination, and the electrical power (P2) actually consumed at each time t by said electrical appliances (AF, AV), wherein said device (S) includes: - a photoelectric control sensor (PE) that is able to measure at each time t the solar light intensity received by said photovoltaic panels (PV) and to deduce therefrom said maximum potential electrical power (P1); - a means (MP3) for determining said surplus of available power (P3), compared at this time t, between the value of the maximum potential electrical power (P1) and the value of the electrical power (P2) actually consumed by said electrical appliances (AF; AV); - and a means (MPG) for managing said surplus of available power (P3), said means (MPG) being configured to redirect and distribute said surplus of available power (P3) between said electrical appliances (AF, AV).