Uninterruptible power supply battery priority

In the first part of this article on Uninterruptible Power Supplies (UPS), we looked at the two main types of units, rotary and static, along with what considerations need to be taken into account when selecting a suitable UPS system. Here, we continue our deep dive into UPSs, examining the run or hold-up time, battery types and sizing.

To get uninterrupted supply nowadays power backups such as inverters and UPS are used commonly. If it is a traditional UPS it is difficult to know remaining power and time till it can supply energy in terms of power. In order to overcome this issue, a design is proposed in the following paper.

Working model of microcontroller based intelligent Uninterrupted Power Supply (UPS) system for power management in laboratory is worked upon. The appliances of lab viz. computers, fans, lights are automatically controlled during power failure according to their priority to ensure optimal utilization of UPS power.

In normal conditions, the UPS charges its internal batteries while simultaneously supplying power to the connected devices. In the event of a power failure, the UPS quickly switches to its batteries, supplying power to the connected devices for a limited time.

One should go for effective utilization of available charge in UPS when power fails. Most of the UPS systems indicate beep during power failure and interval between two beeps indicates the remaining time, the battery can supply power. User should be aware of the run-away time and according to priority he/she has to operate the appliances.

In order to overcome this issue, a design is proposed in the following paper. Working model of microcontroller based intelligent Uninterrupted Power Supply (UPS) system for power management in laboratory is worked upon.