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What is an uninterruptible power supply? What is the working principle of UPS? UPS is the abbreviation of uninterruptible power supply system. It is an important external device that can provide continuous, stable and uninterrupted power. In order to cope with the increasingly stringent requirements of power companies for power system stability and continuous power supply, UPS uninterruptible power supplies have also emerged.
What is an uninterruptible power supply?
Uninterruptible power supplies are widely used in the power grid industry and have been welcomed by many consumers in the market today. The uninterruptible power supply connects the battery and the host to each other, and switches the DC power to electronic equipment through some circuits such as the host inverter. Its important use is to supply power to a computer, computer network system and other equipment, such as solenoid valves. Uninterrupted and stable power supply. When the main power supply is normal, the uninterruptible power supply supplies power to the load after the main power supply is stabilized. At this time, the uninterruptible power supply serves as an AC voltage stabilizer and can also charge the battery in the host to prevent power failure. The power supply problem also protects the normal operation of the load.
Using an uninterruptible power supply can also ensure that the computer can continue to run in the event of a sudden power failure. Help users save files in time, avoid data loss due to unexpected factors, and improve office efficiency.
When the network voltage is working normally, the uninterruptible power supply UPS will start to work, and the energy storage battery will provide the energy required to maintain normal processing under the load. When the load is severely overloaded due to processing demand, the grid voltage will be rectified to directly supply power to the load.
In addition to grid failures, there are many problems that people can’t see, such as harmonics, distortion, overvoltage, shock waves, frequency deviations, and other power supply problems. These problems affect the accuracy and life of the instrument. Therefore, in addition to uninterrupted power supply, UPS also has functions such as voltage stability, surge protection, harmonic distortion protection, and frequency stability.
The working principle of uninterruptible power supply UPS
Uninterruptible power supply UPS When the main voltage is normal, the main voltage is provided to the load after the UPS is stable. The uninterruptible power supply UPS with good performance is a good AC voltage stabilizer, while improving the power quality; charging the battery and storing backup power.
When the mains voltage is abnormal, the inverter of the UPS uninterruptible power supply converts the DC power of the battery into AC power to maintain the power supply of the load. The main power supply is automatically switched to ensure uninterrupted power supply to the load. The allowable switching time can be selected according to the accuracy of the equipment.
From the basic application principle, UPS is a power protection device that includes energy storage equipment, takes inverter as an important component, and stabilizes output voltage and frequency. It is mainly composed of a rectifier, a battery, an inverter and a static switch.
With the widespread use of uninterruptible power supplies (UPS), the equipment models and capacities of UPS systems configured by different companies are different. When we run, we encounter different problems. Therefore, as a power administrator, we must understand the working principle of the UPS power system for future maintenance