On-line interactive UPS, also known as interactive UPS, directly supplies power from the mains to the load when the mains power is normal. When the mains power is low or high, it is output through the UPS's internal voltage-stabilizing circuit after being stabilized. When the mains power is abnormal or In the event of a power failure, it is switched to battery inverter power supply through the transfer switch.
The online interactive UPS is a UPS device between the backup UPS and the online UPS working mode. It concentrates the advantages of the backup UPS high efficiency and the online UPS power supply quality.
UPS is a power supply device that can provide continuous AC output with constant voltage and frequency for electrical equipment even in the event of a mains power failure. UPS usually has energy storage devices. According to different working methods, output capacity, number of phases, etc., UPS power supplies can be divided into many types. According to working methods, it is divided into three categories: backup, online interactive and online. On-line interactive UPS, also known as interactive UPS, directly supplies power from the mains to the load when the mains power is normal. When the mains power is low or high, it is output through the UPS's internal voltage-stabilizing circuit after being stabilized. When the mains power is abnormal or In the event of a power failure, it is switched to battery inverter power supply through the transfer switch.
The online interactive UPS power supply is a UPS device between the backup UPS and the online UPS working mode. It concentrates the advantages of the backup UPS high efficiency and the online UPS power supply quality. The power conversion time of the online interactive UPS is 0.4 milliseconds. Generally, equipment with low requirements can recommend the online interactive UPS.
On-line interactive UPS power supply is directly supplied to the load from the mains when the mains power is normal. When the mains power is low or high, it is output through the UPS internal stabilized circuit after voltage stabilization. When the mains power is abnormal or out of power, the transfer switch is used. Switch to battery inverter power supply. It has a wide input voltage range, low noise, and small size, but there is also a switching time. The online interactive UPS power supply combines the advantages of backup and online, and has the characteristics of low price, low maintenance cost, and 0ms conversion. Its working state can also be divided into the normal state of the mains and the abnormal state of the mains.
The grid input current enters the bidirectional converter for rectification. The rectified current is used to charge the UPS battery pack, and the other is converted to alternating current through the inverter to supply power to the load.
If the grid input current is abnormal or interrupted, the UPS power supply will immediately interrupt the utility power supply. Since the online interactive UPS power inverter is always in working condition, its conversion time is 0ms, which will not have any impact on the equipment.
Compared with the backup UPS, the online interactive UPS has a stronger protection function, and the inverter output voltage waveform is better, generally a sine wave, and its biggest advantage is that it has a strong software function and can be easily accessed online. UPS remote control and intelligent management. It can automatically detect whether the external input voltage is within the normal range. If there is a deviation, the voltage regulator circuit can be boosted or stepped down to provide a relatively stable sine wave output voltage.
Moreover, it can communicate with the computer through a data interface (such as RS-232 serial port). Through the monitoring software, the user can directly monitor the power supply and UPS status from the computer screen, simplifying and convenient management work, and improving the computer system reliability.
This kind of online interactive UPS has the advantages of high efficiency of backup UPS and high power supply quality of online UPS, but its frequency stabilization performance is not very ideal, and it is not suitable for UPS power supply with constant delay.
With the continuous development of automation and informatization, the universal online interactive UPS has become more and more demanding for power in various industries, and the requirements for power protection are getting higher and higher. As an important equipment to ensure the stability and continuity of power supply, modular UPS has been Widely used in various fields.