9
D
ESCRIPTION
The purpose of a UPS is to provide a perfect power supply voltage for the devices connected to it, irrespective of whether the mains
power supply is present or not. Once connected and powered, the UPS generates a sinusoidal alternating voltage with a stable
amplitude and frequency, regardless of any changes and/or variations occurring on the electricity network. Whilst the UPS receives
energy from the mains supply, the DSP will ensure that the connected batteries remain charged. The DSP also monitors the amplitude
and frequency of the mains voltage, the amplitude and frequency of the voltage generated by the inverter, the load applied, the internal
temperature and the condition of the connected batteries.
The block diagrams below show each of the components that make up the UPS for both single and dual input versions.
Block diagram showing the single input UPS (without separate bypass)
Block diagram showing the dual input UPS (with separate bypass)
