High frequency online UPS (Uninterruptible Power Supply) is widely used in various scenarios that require high power supply quality and continuity due to its small size, light weight, high efficiency, and fast response speed. The following are its main applicable scenarios and reasons analysis:
1、 IT and Data Center Scenarios
This is one of the most core application areas for high-frequency online UPS, as IT equipment is sensitive to power supply stability, and this scenario has clear requirements for equipment space occupation and energy efficiency:
Server room/data center: Core equipment such as servers, storage devices (such as disk arrays), and network switches require 24-hour uninterrupted operation and are extremely sensitive to voltage fluctuations and harmonic interference. The "online" working mode of high-frequency online UPS (continuously converting mains power into DC and then inverting it into AC, stabilizing voltage and frequency throughout the process) can effectively isolate interference such as spikes, surges, and voltage drift in the power grid, ensuring stable operation of equipment; At the same time, its small size (the volume of high-frequency transformers is much smaller than that of power frequency transformers) is suitable for high-density deployment in computer rooms.
Small office IT equipment: such as enterprise grade routers, small servers, office NAS (network storage servers), etc. Although these devices have low power, sudden power outages may cause data loss or equipment damage. The fast switching capability of high-frequency online UPS (zero switching time, due to being in an inverted state throughout the entire process, it is immediately powered by the battery after the power grid is cut off) can avoid the impact of power outages, and its lower no-load loss (energy efficiency is usually above 90%) is also more suitable for long-term standby.
2、 Precision Electronics and Laboratory Equipment
Precision instruments, such as spectrometers, chromatographs, electron microscopes, etc., have a large number of high-precision sensors and integrated circuits inside. Small fluctuations in power supply voltage (such as deviations of ± 5% or more) may cause measurement data distortion; High frequency noise in the power grid may also interfere with the signal transmission of equipment. High frequency online UPS outputs pure sine wave power through an inverter circuit (total harmonic distortion is usually less than 3%), which can provide "clean" power to equipment, and its millisecond level voltage adjustment speed can quickly compensate for grid voltage changes.
Laboratory testing equipment, such as semiconductor testing instruments, PCB (printed circuit board) testing equipment, etc., may experience power outages during the testing process, which can not only cause testing interruptions, but also damage the tested samples (such as chips) due to sudden power outages. The battery backup function of high-frequency online UPS can provide power supply for several minutes to several hours (according to battery capacity configuration), buying time for equipment to shut down normally or switch to backup power.
3、 Medical equipment scenario
Some medical equipment with high requirements for power continuity and stability are also suitable for using high-frequency online UPS:
Diagnostic equipment: such as CT machines, MRI (magnetic resonance imaging) control systems, ultrasound equipment hosts, etc. If these devices are powered off during operation, it may cause interruption of the diagnostic process and even loss of patient examination data; And its internal precision circuit has strict requirements for voltage quality. The zero switching characteristic of high-frequency online UPS ensures uninterrupted power supply, and the pure output power supply can also guarantee the diagnostic accuracy of the equipment.
Small monitoring and treatment equipment: such as multi parameter monitors, infusion pumps, small ventilators, etc. in ICU (intensive care unit), although with low power, require 24-hour stable power supply (especially for monitors, power outages may prevent real-time monitoring of patient vital signs). The high-frequency online UPS has the characteristics of small size and flexible installation (can be wall mounted or desktop placed), which is suitable for hospital wards, consultation rooms and other scenarios. At the same time, its low-noise design (due to the low noise of high-frequency conversion circuits, there is no low-frequency noise of power frequency transformers) also meets the requirements of medical environments.
Attention: Some high-power medical equipment (such as large surgical equipment) may have inductive loads or special requirements for power supply "shock resistance", and should be selected in conjunction with the equipment manual; But high-frequency online UPS has stronger applicability in small and medium power medical equipment scenarios.
4、 Communication and Network Infrastructure
Communication base station supporting equipment: such as core network equipment of the base station, signal transmission equipment (optical transceiver, base station controller), etc. These devices rely on stable power supply to ensure signal coverage and communication quality. When there is a power outage in the grid, if the power supply is interrupted for more than a few seconds, it may cause the base station to shut down (signal interruption). High frequency online UPS can cooperate with the battery pack of the base station to immediately take over power supply after the power grid is cut off, ensuring the continuous operation of the equipment until the diesel generator is started (if configured) or the power grid is restored.
Small communication room/access network equipment: such as fiber optic access equipment (OLT, optical line terminal) in residential areas, voice switches in enterprises, etc. These devices have low power (usually tens to hundreds of watts), but need to operate stably for a long time (network disconnection will affect user communication). The high efficiency and small size characteristics of high-frequency online UPS are suitable for deployment in such small computer rooms. At the same time, its strong adaptability to the power grid (it can work in a wide input voltage range, such as 110-300VAC) can cope with the problem of unstable power grid voltage in some areas.
5、 Industrial automation and small-scale control scenarios
In the industrial field, some small and medium power automation equipment or control links can also use high-frequency online UPS:
PLC and Control System: The PLC (Programmable Logic Controller), Human Machine Interface (HMI), sensor data acquisition module, etc. of industrial production lines are the "brain" of the production line. If there is a power outage or power interference, it may cause the production line to shut down (resulting in production losses), and even cause equipment collisions and other accidents due to abnormal control signals. The voltage and frequency stabilization function of high-frequency online UPS can isolate power grid interference and ensure the logical operation stability of the control system; Its rapid response capability can also cope with instantaneous power outages in the power grid (such as power grid flashes).
Small precision machining equipment, such as CNC engraving machines and control units for small 3D printers (industrial grade), rely on stable power supply for motor drive and position control. Voltage fluctuations may lead to a decrease in machining accuracy (such as carving pattern offset, 3D printing layer misalignment). The stable power supply output of high-frequency online UPS can reduce such problems, and its lightweight design is easy to integrate and install with equipment.
6、 Family and Small Business Scenarios
With the increasing dependence of households and small businesses on electronic devices, high-frequency online UPS is gradually entering such scenarios:
High end electronic devices at home, such as amplifiers for home theaters, high-end game consoles (such as PS5, Xbox Series X), and home servers, may experience damage to their hard drives (especially mechanical hard drives) or data loss due to sudden power outages; And surges in the power grid (such as the impact of thunderstorms on the power grid) may also burn out equipment power. High frequency online UPS can provide power outage protection and surge protection, and its pure power supply can also reduce interference such as "current noise" from power amplifiers.
Small commercial devices, such as cash register systems (POS machines, barcode scanners, backend servers) in convenience stores and ordering systems in small restaurants, can experience transaction interruptions and even inability to settle due to power outages. The backup power supply function of high-frequency online UPS can support devices to complete current transactions and shut down normally, avoiding business disruptions.
Supplement to the "Not Applicable Scenarios" of High Frequency Online UPS
It should be noted that high-frequency online UPS, due to the use of high-frequency conversion technology, has weaker applicability in scenarios with high-power inductive loads (such as large motors, welding machines), strong electromagnetic interference environments, and extremely high requirements for power supply "overload resistance" (such scenarios are more suitable for power frequency online UPS). However, in the above-mentioned scenarios with high requirements for power supply quality and space, its advantages are significant and it is currently one of the most widely used UPS types in the market.
