INVERTER

INVERTER

One of the most common applications of Inverter is the Uninterruptible Power Supply, commonly called as UPS.
Most of the homes have UPS now-a-days.

Why it is called as Uninterruptible Power Supply?

When you household power supply fails we can make use of the UPS to give power without interruption.
Hence it is called as Uninterruptible Power Supply.
It just acts as a backup for power source.

Working:

 

It stores energy in electrical form. It uses rechargeable battery for this purpose.
Some of the UPS store energy in mechanical form also using high speed fly wheel and high speed electric motors.
When power flows normally batteries in the UPS charge itself.
If the power fails then it automatically switches to the battery power to work.
But there is the problem exists with charging to battery and discharging from battery.
Batteries normally stores energy in DC (Direct Current) form.
The power from source is AC (Alternating Current). It has to be converted to DC for storing in battery.
Also again it has to be converted to AC form for domestic usage.

Need for Inverter:

To resolve this problem inverter is used.
Inverter is used to convert AC to DC and vice versa.
The power from source passes the battery via inverter.
Hence UPS is also called as Inverter. But both the UPS and inverter functions are different know it clearly.