FIELD: electrical engineering.
SUBSTANCE: uninterrupted power supply (UPS) (10) includes an AC output (63), a power coefficient correction power stage (12) and a DC bus (14) connected to the power coefficient correction power stage (12); the control system (18) Is designed so that to enable determination of difference in instantaneous power supplied to the AC output (63) and regulation of the DC bus voltage (14) based on at least such difference. In one implementation version the control system (18) is designed so that to enable determination of the total difference in instantaneous power supplied to the AC output (63).
EFFECT: increasing control efficiency and speed.
18 cl, 7 dwg
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