UPS energy storage equipment is classified into three main categories based on its working principle: standby UPS, online UPS, and line-interactive UPS.
Among them, the most commonly used is the standby UPS. It possesses the most basic and crucial functions of a UPS, such as automatic voltage regulation and power outage protection. Although it typically has a transfer time of around 10ms and the inverter output AC power is a square wave rather than a sine wave, its simple structure, low price, and high reliability make it widely used in microcomputers, peripherals, POS machines, and other fields.
Online UPS has a more complex structure but more comprehensive performance, capable of solving all power supply problems. Its significant feature is its ability to continuously output pure sine wave AC power without interruption, resolving all power supply issues such as spikes, surges, and frequency drift. Due to the larger investment required, it is usually used in environments with stringent power requirements, such as critical equipment and network centers.
Compared to standby UPS, online interactive UPS has filtering capabilities, strong resistance to mains interference, a conversion time of less than 4ms, and an inverter output of analog sine wave. Therefore, it can be equipped with network equipment such as servers and routers, or used in areas with harsh power environments.
