DIRECT CURRENT POWER SUPPLY SYSTEM Russian patent published in 2015 - IPC H02J9/00 

FIELD: electricity.

SUBSTANCE: invention relates to electric engineering, in particular to DC power supply systems of critical consumers requiring power supply of higher quality. DC power supply system contain unregulated generator with variable speed, its shaft is connected to aircraft engine shaft, and semiconductor AC/DC converter based on the thyristors with first protection loop made as first voltage sensor connected via the first time delay with converter thyristors control system. Additionally system has the second protection loop containing power transmission thyristor gate connected in load circuit of the thyristor converter, assembly of second time delay, second and third voltage sensors, and control device of second protection loop connected with the first and second control devices of the transmission gate. The first control device switches the gate to cutoff mode and is connected via the control device of protection and second time delay with the second voltage sensor. The second control device switches the gate to voltage stabilization mode and is connected directly with output of the third voltage sensor and output of the control device of protection, at that make voltage level of the third voltage sensor exceeds the same of the second voltage sensor.

EFFECT: increased reliability of consumers power supply.

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