What is UPS?
UPS is the abbreviation of Uninterrupted Power System. Ups uses battery chemical energy as backup energy.Ups is an energy conversion device that can continuously provide (AC) electrical energy to user equipment during power outages caused by power grid failures.UPS is a backup power supply device connected between the user’s load electrical appliances and the AC power supply. Its role is to ensure that the load has a continuous power supply, and in the case of AC power interruption, it can also supply power to the load within a predetermined time.
The main functions are as follows：
- Realize the isolation between the power grid and the electrical appliances；
- Realize uninterrupted switching of two power supplies；
- Provide high-quality power supply；
- Voltage conversion and frequency conversion functions；
- Provide backup time after power failure
Problems that UPS can solve:
- Non-stop power-up function to solve the problem of power outages in the power grid；
- ac voltage regulation function to solve the problem of severe fluctuations in network voltage；
- Purification function to solve the problem of power grid and power supply pollution；
- Management functions to solve the problem of AC power maintenance
In order to ensure that the UPS system can continuously supplies power to important loads, thus each UPS system is equipped with three power supplies, namely UPS main power supply, DC (battery) power supply, and bypass power supply.
The UPS system equipment consists of a main cabinet (including input transformer, rectifier, inverter, output isolation transformer, inverter static switch and bypass static switch, etc.), isolation transformer cabinet, bypass voltage regulator cabinet and power distribution cabinet.
In the past, UPS was mostly used to assist computer equipment to prevent data loss caused by sudden power outages.
Now UPS has been widely used in: mining, aerospace, industry, communications, national defense, hospitals, computer business terminals, network servers, network equipment, data storage equipment, emergency lighting systems, railways, shipping, transportation, power plants, substations, nuclear power plants, production plants, fire safety alarm systems, wireless communication systems, program-controlled switches, mobile communications, solar energy storage energy conversion equipment, control equipment and its emergency protection systems, personal computers and other fields.
Classification of UPS：
UPS is divided into three categories according to its working principle: backup UPS, online UPS and online interactive UPS.
It has the most basic and important functions of UPS such as automatic voltage regulation and power-off protection. Although it generally has a conversion time of about 10ms, it has the advantages of cheap price and high reliability due to its simple structure, so it is widely used in microcomputers, peripherals, POS machines and other fields.；
The structure is more complex, but the performance is perfect, it can solve all power supply problems, and the conversion time is 0ms. For example, the four-way PS series, its distinctive feature is that it can continuously output pure sine wave alternating current with zero interruption, which can solve all power supply problems such as spikes, surges, and frequency drift. Due to the need for large investment, it is usually used in environments with demanding power requirements such as key equipment and network centers.；
3.Online interactive UPS：
Compared with the backup type, the online interactive type has a filtering function, strong anti-MAINS interference ability, conversion time is less than 4ms, and the inverter output is an analog sine wave, so it can be equipped with servers, routers and other network equipment, or used in areas with harsh power environments.