FIELD: electricity.
SUBSTANCE: invention is related to the field of engineering and may be used in uninterrupted power supply (UPS) systems and inverters. The method and device solving the problem of mismatch between UPS systems of non-sinusoidal oscillations and loads with active power factor compensation (PDC) includes the following stages when non-sinusoidal oscillations to be delivered as a load (e.g., voltage fluctuations) are generated with relative pulse duration of pulse-width modulation (PWM); discretisation of these non-sinusoidal oscillations to accumulate output signal readings and regulation of relative pulse duration to control non-sinusoidal oscillations depending on output signal readings in order to deliver the desired signal characteristic (e.g., mean-square signal level) as a load. In the embodiments the relative output pulse duration is regulated in different ways in case of growing and lowering power consumption by the load respectively.
EFFECT: improvement of reliability and efficiency for users and suppliers.
20 cl, 14 dwg
