Patent ID: 6528977
Filing Date: 2003-03-04
Classification: G05F,Y02E,Y10S

Abstract:
A power supply system comprising:a first photovoltaic generator for generating power; a second photovoltaic generator for generating power; a constant-power load for receiving the power generated from the first photovoltaic generator; a power consumption source of a predetermined current-voltage characteristic for receiving the power generated by the second photovoltaic generator; and a control system that operates to control supply of the power to the load and to the power consumption source; wherein the operation of the control system is a function of the maximum electric power (Pmax) generated by the first photovoltaic generator and the electric power (PL) consumed in the load; such that when the maximum electric power (Pmax) generated by the first photovoltaic generator is equal to the electric power (PL) consumed by the load (Pmax=PL), said control system does not operate; and when the maximum electric power (Pmax) generated by the first photovoltaic generator is greater than the electric power (PL) consumed by the load (Pmax>PL), said control system operates to permit the power consumption source to receive a surplus of electric power (&Dgr;P1=Pmaxâˆ’PL) from the first photovoltaic generator; and when the maximum electric power (Pmax) generated by the first photovoltaic generator is less than the electric power (PL) consumed by the load (PmaxL), said control system operates to supply the deficient electric power (&Dgr;P2=PLâˆ’Pmax) from the second photovoltaic generator to the load.