UPS is an uninterruptible power supply. It is a system device that connects the battery to the host and converts DC power to mains power through module circuits such as the host inverter.
UPS power system consists of five parts: main circuit, bypass, battery and other power input circuits, rectifier (REC) for AC / DC conversion, inverter (INV) for DC / AC conversion, inverter and bypass output Switching circuit and energy storage battery
With the increasing requirements of computer application systems for power supplies, UPS has been increasingly valued, and has gradually developed into a power protection system with functions such as voltage stabilization, frequency stabilization, filtering, anti-electromagnetic and radio frequency interference, and anti-voltage surfing. Especially when the quality of the power line and power supply is not high, the anti-jamming technology is backward, and the computer system has higher power requirements, the role of UPS becomes more obvious. UPS is aimed at the reliability requirements of the power grid environment and network monitoring and network systems, medical systems, etc., to overcome the increasingly severe problem of the power grid environment caused by the centralized power supply of medium and large computer network systems.
Development characteristics: (1) High efficiency and high reliability; (2) High power and modularity; (3) High frequency; (4) Digital, intelligent and networked; (5) Green, energy saving and environmental protection.
Uninterruptible power supplies are widely used in: mining, aerospace, industry, communications, defense, hospitals, computer business terminals, network servers, network equipment, data storage equipment, emergency lighting systems, railways, shipping, transportation, power plants, substations, nuclear power stations, fire protection Security alarm systems, wireless communication systems, program-controlled switches, mobile communications, solar energy storage energy conversion equipment, control equipment and their emergency protection systems, personal computers and other fields.