Patent ID: 6583523
Filing Date: 2003-06-24
Classification: H02J,Y02P

Abstract:
A power management system for supplying electric power to a load, comprising:a first electrical circuit element that includes a first direct current (DC) energy source in series with a first rectifier that prevents current backflow into the first energy source; and a second electrical circuit element that includes a second DC energy source in series with a second rectifier that prevents current backflow into the second energy source, wherein the second electrical circuit element is in parallel with the first electrical circuit element, wherein an open circuit voltage V10 of the first energy source exceeds an open circuit voltage V20 of the second energy source, wherein V20 is set to a value that depends on a power variable selected from tho group consisting of a first reference power level PLREF, a second reference power level P1REF, and a combination thereof, wherein PLREF is a function of a load power representation PL(t), wherein t denotes time, and wherein P1REF is a function of a power output of the first energy source.