UNINTERRUPTIBLE POWER SYSTEM Russian patent published in 2019 - IPC H02J9/04 

FIELD: electrical engineering.

SUBSTANCE: uninterruptible power supply system comprises connected in parallel to buses of uninterrupted power supply of direct current first and second inputs of three-phase network through in-series connected to each input automatic power switching units and three-phase rectifiers, three-phase synchronous diesel generator, connected to automatic switching units of first and second input of three-phase network, storage battery and molecular energy storage, also connected to buses of uninterrupted power supply of direct current, modular converters - three-phase inverter and single-phase inverter, modular converters - voltage stabilizers connected by one output to buses of uninterrupted power supply of direct current, and by another to alternating and direct current consumers of different voltage levels. At that, two three-phase rectifiers are separately connected to corresponding inputs of three-phase network, and synchronous diesel-generator is connected through automatic switching units to inputs of two three-phase rectifiers. Accumulator battery, discharge time of which is set by requirements for preservation of its limited capacity, is connected to buses of uninterrupted power supply of direct current through normally open contact of power contactor, through current sensor in discharge circuit of battery and separating diode of storage battery, and molecular energy storage unit is connected to uninterrupted power supply buses of direct current through current sensor in discharge circuit of molecular energy accumulator and separating diode molecular energy accumulator, and uninterrupted power supply buses of direct current are connected to molecular energy accumulator through charging resistor and separating diode of charging circuit of molecular energy accumulator. To the current sensor in the molecular energy accumulator discharge circuit there is connected an amplifier and a unit for delaying the time of switching on the accumulator battery from the moment when current starts flowing through the current sensor in the circuit of the molecular energy accumulator discharge corresponding to the moment of disconnection of inputs of the three-phase network, and to disconnect the battery at the end of discharge to the current sensor in its discharge circuit, an amplifier and a delay unit for disconnecting the accumulator battery from the moment of current flow termination through the current sensor in the discharge circuit of the battery are connected.

EFFECT: technical result is increase in power supply continuity of consumers, preventing power interruptions, as well as creation of a mode of operation of electric power sources, which ensure preservation of the standard value of capacity, which enables to ensure the required reliability of power supply of critical consumers.

3 cl, 2 dwg