Patent ID: 7999504
Filing Date: 2011-08-16
Classification: B64G,H02J

Abstract:
1. Electrical power supply system for satellite, with continuously controlled DC-voltage, including: a main power bus intended to be connected to an equipment set consuming electrical energy; a plurality of solar generator sections connected to the main power bus; a battery unit, which has an output terminal (B); a plurality of battery discharge regulator modules, each connected between the output point (B) of the battery unit and the main power bus; and an error amplifier, suitable for producing at least one control signal of at least one current transmitted to the main power bus in order to maintain an electric potential (V wherein each solar generator section includes a DC-current generating line and a switch, suitable for transmitting an electric current produced by said line to the main power bus, or for inhibiting an output of said current to said main power bus, the error amplifier is connected to a control input of the switch of at least some of the solar generator sections, so that an average current transmitted by said sections can be adjusted according to the control signal produced by the error amplifier, and the error amplifier is also connected to a control input of at least some of the battery discharge regulator modules, so that a discharge current (I which electrical power supply system includes: at least one of the solar generator sections, so-called charge section, is connected to the output point of the battery unit without the intermediary of any battery discharge regulator module, so that a portion of the current transmitted by said charge section can be transmitted directly to the battery unit without passing through the main power bus, in which the solar generator sections other than said charge section are connected to the main power bus without the intermediary of a battery discharge regulator module, the power supply system also includes a first additional regulator connected to the control input of at least one module selected from the battery discharge regulator modules, with said first additional regulator being suitable for transmitting, to said selected module, a signal for adjusting a residual current corresponding to an excess of the current produced by the charge section with respect to a charge target for the battery unit, and said residual current being retransmitted to the main power bus, and in which the error amplifier is further connected to the first additional regulator in order to activate an operation of said first additional regulator so that a charge of the battery unit can be produced from the charge section while some of the solar generator sections other than said charge section transmit, to the main power bus, a current that, with said residual current, supplies power to the equipment set.