UNINTERRUPTED POWER SUPPLY Russian patent published in 2024 - IPC H02M7/42 

FIELD: electrical engineering.

SUBSTANCE: uninterrupted power supply source relates to the field of electrical engineering, in particular to static reversible converters performing the function of uninterrupted power supply sources, which can perform the functions of a charger for accumulator batteries or other DC consumers, as well as a power source for AC voltage consumers. Uninterrupted power supply source comprises a self-contained power supply with a controlled topology of connecting storage batteries, high frequency link, built on CLLC topology with high-frequency double-resonant transformer, three-phase four-wire independent voltage inverter of industrial frequency, three-phase LCL+L-low-pass filter, a unit of sensors of three voltages and four currents of an industrial network and a control system, inputs of which are connected to current and voltage sensors, the outputs of which are connected to drivers and an autonomous power supply. Control system additionally contains a digital input intended for connection of external control devices. Proposed design allows to significantly increase the specific power consumption of the UPS due to the possibility of maximum charge and deep discharge of the storage battery and allows to significantly increase the quality of the three-phase network formed by the UPS by increasing the frequency of the PWM modulation of the three-phase supply network, higher quality of filtration of three-phase voltage and possibility of realization of algorithms of synchronization and compensation of reactive power with application of neutral wire.

EFFECT: all of the above in combination significantly increases the energy efficiency of the proposed uninterrupted power supply; additionally introduced digital input in the control system will make it possible to use an uninterrupted power supply as a controlled device as part of complex scalable uninterrupted power supplies.

2 cl, 3 dwg