METHOD OF LOAD FEEDING BY DIRECT CURRENT IN AUTONOMOUS ELECTRIC POWER SUPPLY SYSTEM OF MAN-MADE SATELLITE Russian patent published in 2015 - IPC H02J7/35 

FIELD: electricity.

SUBSTANCE: invention is related to electrotechnical industry and may be used in design of autonomous power supply systems (PSS) of artificial Earth satellites (AES). The invention suggests the load supply method by direct current in autonomous power supply system for AES from solar battery and a set of secondary power supply sources being accumulators N_ac of in-series accumulator batteries; the method lies in stabilisation of on-load voltage, charge and discharge of accumulator batteries through individual charge and discharge converters, at that discharge converters are made without booster units and to this end number of accumulators N_ac in each accumulator battery is selected on the basis of the following ratio: N_ac≥(U_out+1)/U_ac.min, where N_ac is a number of accumulators in in-series circuit of each accumulator battery; U_out is voltage at output of autonomous power supply system, V; U_ac.min is minimum discharge voltage of one accumulator, V; charge converters are made without booster units and to this end number Q-point voltage of the solar battery is selected on the basis of the following ratio: U_Q-p>U_ac.max·N_ac+1, where U_Q-p Q-point voltage of the solar battery at the end of its safe operation resource, V; U_ac.max is maximum charge voltage of one accumulator, V, at that design number of accumulators N_ac is increased additionally on the basis of the following ratio: N_ac≥(U_out+1)/U_ac.min+N_fail, where N_fail is a number of permitted fails of accumulators; on-voltage stabilisation and charge of accumulator batteries is made using optimising voltage control of the solar battery.

EFFECT: improvement of specific output performance and reliability of autonomous power supply system for AES.

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