METHOD TO CONTROL AUTONOMOUS POWER SUPPLY SYSTEM OF SPACECRAFT Russian patent published in 2016 - IPC H02J7/34 

FIELD: electricity.

SUBSTANCE: invention relates to self-contained power supply systems (PSS) of spacecrafts (SC) using the solar-voltaic arrays (SVA) as primary power sources, and accumulator batteries as energy accumulating units. In the claimed method when PSS operates in mode of on-board equipment supply and charge of accumulator batteries the solar battery panels are oriented towards the Sun at angle of 90°; value of the rated input voltage corresponding to voltage at operating point of SVA current-voltage curve is selected against value of its rated power sufficient for supplying on-board equipment and charging of all accumulator batteries in standard mode of PSS functioning; extreme SVA power control is made as a device intended to set and maintain voltage at operating point of SVA current-voltage curve, when required, which is different from the rated value; change in voltage at operating point of SVA current-voltage curve is made discreetly against preset settings of input voltage corresponding to different levels of power taken from SVA, at that transfer from on setting of input voltage to another one is provided from the ground control centre as per one-time commands, and take-off of SVA power for supplying on-board equipment and charging of all accumulator batteries at transfer to the next setting is made due to selection of optimal ratio between threshold value of AB charging current and quantity (n) of accumulator batteries used by SC PSS, moreover charging current (n-1) of the accumulator battery when one AB is disconnected from charging is selected as equal to threshold value; electrical characteristics of SVA and extreme power regulator are designed with consideration of required and sufficient condition U_out<U_{in rated}<U_opt, where U_out is output voltage of PSS; U_{in rated} is rated input voltage at operating point of SVA current-voltage curve when extreme SVA power regulator is switched off; U_opt is input voltage corresponding to maximum (optimal power) of SVA.

EFFECT: developed method for control of self-contained power supply system of SC that allows suppressing emergency process due to failure in energy balance by generation and maintenance of maximum SVA power take-off and counteracting emergency when it occurs.

3 dwg