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This article will explain in detail what are the three major functions of UPS power supply. I think it is very practical, so I share it for you as a reference. I hope you can get something after reading this article.

Ups power supply is a kind of uninterruptible power supply with energy storage device, its function is to provide uninterruptible power supply to some equipment that require high power stability, and to ensure the continuous operation of electrical equipment when the power grid voltage is dropped or interrupted.

UPS is uninterruptible power supply (Uninterruptible Power Supply), which is a kind of uninterruptible power supply with energy storage device. It is mainly used to provide uninterruptible power supply to some equipment which require high power supply stability.

When the city power input is normal, UPS stabilizes the city power and supplies it to the load. At this time, the UPS is an AC voltage regulator, and at the same time, it also charges the battery in the machine; when the city power is interrupted (accident power outage), UPS immediately supplies the DC power of the battery to the load through the method of inverter switching and conversion, so that the load can maintain normal operation and protect the load software and hardware from damage. UPS devices usually provide protection against either too high or too low voltage.

Uninterruptible power supply (UPS) is a system equipment that connects the storage battery (mostly lead-acid maintenance-free battery) with the host computer and converts DC current into municipal power through module circuits such as mainframe inverter. It is mainly used to provide a stable and uninterrupted power supply to a single computer, computer network system or other power electronic equipment such as solenoid valve, pressure transmitter and so on.

Uninterruptible power supplies are widely used in mines, aerospace, industry, communications, national defense, hospitals, computer business terminals, network servers, network equipment, data storage devices, emergency lighting systems, railways, shipping, transportation, power plants, substations, nuclear power plants, fire safety alarm systems, wireless communication systems, program-controlled exchanges, mobile communications, solar energy storage energy conversion equipment, Control equipment and its emergency protection system, personal computer and other fields.

Three functions of UPS power supply:

1. Voltage stabilization

UPS has a good voltage stabilizing function. The high-grade UPS power supply will supply the power supply to the load after stabilizing the voltage, which is equivalent to an AC power regulator. When the city power is cut off, UPS immediately converts the power of the battery in the machine into a stable 220V through the inverter to continue to supply power to the load. So it has the function of stabilizing voltage.

Low-grade UPS power supply, only the city electricity directly to the load, no AC voltage stabilization function. When the city power is cut off, UPS immediately converts the power of the battery in the machine into a stable 220V through the inverter to continue to supply power to the load. Therefore, there is no AC voltage stabilizing function for municipal electricity, but for inverter AC, it has voltage stabilizing function.

UPS power supply is divided into on-line UPS power supply and backup UPS power supply, the general home computer is equipped with backup UPS power supply, it belongs to a kind of standby power supply; backup type is with voltage regulator part, using relay shift voltage regulation mode, voltage regulation effect is very poor, can not be counted as voltage regulator.

2. Filtering

In order to improve the utilization rate of off-line UPS and improve the power quality of the power grid, the UPS power supply with active filter function is studied. Its essence is an improvement of offline UPS, which can realize the functions of uninterrupted power supply and active filter at the same time without increasing the cost of hardware. According to the power grid condition, the system can work in APF mode and UPS mode respectively.

The special filter for UPS power supply solves the harmonic problem of UPS power supply. The harmonic generated by the UPS power supply is filtered, and the harmonic current distortion rate is reduced to 5% to 10%. The special filter for UPS power supply can improve the system reliability, effectively reduce the load rate under heavy load, reduce the apparent current, restrain the harmonic distortion, reduce the transient overvoltage, reduce the voltage and current change rate, and ensure the power reliability.

The special filter for UPS power supply can improve the energy saving phenomenon of UPS, not only increase the power factor and reduce the apparent current, but also significantly reduce the high-order harmonic distortion and reduce the high-order harmonic loss.

3. Uninterrupted power supply

Uninterruptible power supply UPS can provide power for a period of time after power outage. The power source of on-line UPS uninterruptible power supply can not be separated from the support of storage battery. If there is no storage battery in online UPS uninterruptible power supply, UPS uninterruptible power supply is equivalent to a voltage-stabilized power supply. It is precisely because of the storage battery that when the city power is abnormal or power is cut off. The battery transmits chemical energy through the inverter to provide power for AC power to provide power to the load, so that the electrical equipment continues to operate normally without the impact of power outages.

Generally speaking, UPS is set up to solve the problem of uninterrupted power supply. The three basic functions of UPS are voltage stabilization, filtering and uninterrupted. In the power supply of municipal power, it is the function of voltage regulator and filter to eliminate or weaken the interference of municipal power and ensure the normal operation of the equipment. When the city power is interrupted, it can convert the direct current provided by its DC power supply part into perfect AC power supply for load use, in which the power supply from city power supply to battery power is generally switched to zero time. This makes the load equipment keep running without feeling any change, which really ensures the uninterrupted operation of the equipment.

This is the end of this article on "what are the three functions of UPS power supply". I hope the above content can be of some help to you, so that you can learn more knowledge. if you think the article is good, please share it out for more people to see.

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