4.1 What is UPS?
|UPS stands for Uninterruptible Power Supply which keeps on continuously
feeding electric power to supply mains system even when power failure
such as blackout or momentary outage occurs. UPS consists of mainly
battery, charger, and inverter, and has a variety of power feeding
system according to circuit structure. Following is major systems.
- Standby power system
- Online power system
- Line Interactive power system
- Multi-processing power system
- Flywheel power system
Fundamental operation of UPS is as follows, Electric energy for
output is supplied from supply mains
in general while battery is charged at a time. When blackout or
power failure occurs, battery provides energy to inserter to convert
DC to AC as output. UPS has a wide range of types from small power
for client PCs to large power to back up entire facility such as
building and factory.
Figure 4.1°°UPS connection