What is UPS? No one must know, UPS power supply and uninterruptible power supply system, that is, uninterruptible power supply, is a system equipment that connects the battery with the host, and converts DC power into commercial power through the host inverter and other module circuits. And it is the most common in the process of computer room construction, so what is the use of the most common UPS system in the process of computer room construction? Why use a UPS system instead of other systems for power supply?
1. Why do you have to use a UPS system?
There is a common misconception that the utility power we use is continuous and constant, barring occasional blackouts, but this is not the case. As a public power grid, the urban power system is connected to thousands of various loads, some of which are larger inductive, capacitive, switching power supplies, not only obtain power from the grid, but also adversely affect the grid itself, deteriorating the grid or local The power supply quality of the power grid causes the voltage waveform distortion or frequency drift of the urban power grid. The significance of UPS is that it can avoid this type of things from happening. The UPS system can provide uninterrupted power supply, connect the battery to the host, and convert the DC power into the mains system through the host inverter and other module circuits. The main purpose is to provide stable and uninterrupted power supply to computer network systems or other power electronic equipment.
2. Types of UPS
In general, UPS power systems can be divided into three categories, namely backup (or offline) and online interactive and double conversion (online). Different manufacturers provide UPS with different configurations. Customers choose the required UPS power according to their goals, applications, functional requirements and desire for product differentiation.
3. Application scenarios of UPS system
At present, UPS power supply can be used in almost all places. Common places, such as transportation, computer room, airport, subway, building management, hospital, bank, power plant, office, etc., all require UPS power supply. In order to ensure the uninterrupted power supply demand in these occasions, the UPS power supply will supply power immediately after the mains interruption in these occasions, so as to ensure the uninterrupted operation of the electrical equipment in these occasions. UPS power supply can also be used for home use. Of course, UPS power supply can also be used in homes or offices in big cities, because the electrical equipment in urban households is usually precision equipment such as computers or servers, and sudden power failure will also cause great damage to the equipment. So UPS power can also be used for protection. Power outages are a regular occurrence. In some areas, there are even three guarantees. The power supply quality of the power grid is poor, and sometimes the voltage is too high, which can exceed 240V (phase voltage 8, sometimes the voltage is too low, and can be lower than 180V. Under such power supply conditions, the computer system basically cannot work normally.
Fourth, the usefulness of UPS to the computer room
The use of UPS power supply can greatly improve the reliability of power supply, and the standby power supply and the power supply under load remain phase-locked, that is, the same voltage, the same frequency, and the same phase. And will not produce strong arc interference. The computer will not lose information and data, and protect the computer equipment, especially the hard disk, from being scratched due to power failure. UPS power supply can greatly improve the quality of power supply. UPS power supply is a kind of purified power supply, which eliminates high-order harmonics and improves the quality of power supply. Generally speaking, although the waveform of the mains voltage tends to be a sine wave, it also has certain harmonic components. Severely unstable power supply can cause computer error codes or loss of information. In the UPS power supply, a quartz crystal oscillator is used to control the inverter frequency to keep constant. With the maturity of UPS technology, more and more applications are applied to computers. Uninterruptible power supply is an indispensable device in the computer power supply system.
