CONTROL METHOD OF POWER SUPPLY SYSTEM OF SPACECRAFT OF INCREASED SURVIVABILITY Russian patent published in 2019 - IPC B64G1/42 H02J7/34 

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering, specifically autonomous power supply systems (PSS) of spacecraft (SC), using as primary sources of energy photovoltaic batteries (PB), and as energy storage – accumulator batteries (AB). Charging and discharging devices are controlled. Prohibition of discharge device operation is performed when minimum charge level is reached and prohibition is removed at increase of charge level. Control signal is generated to disconnect part of onboard equipment at emergency discharge of several m (m≤n) AB to minimum level of charge. Operation of all discharge devices is inhibited if output voltage of PSS drops to preset threshold value. Control signal storage is reset to prohibit all discharge devices after charging all the batteries to the specified level of charge. PSS parameters are readout. Readout is performed from automation and voltage stabilization complex via multiplex exchange channel. Total depth of discharge of all the accumulators is calculated and the calculated total depth of the discharge is compared with the threshold values given in the on-board PSS program. Repeated reading of PSS parameters, duration of setting is selected, comparable with period of updating information on PSS parameters. Again, comparison with threshold values of total discharge depth is performed, generating/not generating control signal in onboard control system to change operating mode of spacecraft.

EFFECT: higher reliability and survivability of PSS and spacecraft as a whole.

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