Lithium ion ups
UPS - How It Works?
Power failures and abrupt outages can lead to very large losses, especially if the functioning of companies and enterprises is built on new intelligent technologies. In this case, not only important data can disappear, but all settings can go astray. You can avoid this outcome by using uninterruptible power supplies (UPS). These automatic electronic devices primarily provide a short-term power supply of electrical appliances and household appliances from their own batteries in the event of a sudden power outage. However, do not confuse uninterruptible power supplies with backup power supplies.
Uninterruptible power supplies, as the UPS is also called, are capable of providing sufficient power for the operation of machines only for a short time, and backup sources are designed for a longer period. A simplified UPS circuit includes batteries and special UPS elements that compensate for disturbances in the mains, namely, an inverter, a rectifier, a filter, and in some cases a bypass.
A good performance uninterruptible power supply (UPS) itself is a good AC voltage stabilizer, and at the same time it improves the power quality; The battery is charged to store backup energy; when the grid 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 to the load. Automatically switch between grid power supply to ensure uninterrupted power supply to the load.
Types of UPS
Today, uninterruptible power supplies are divided into three groups. Each of the groups has its own characteristics of the UPS operating principle. The offline UPS secures individual devices such as PCs or cash register systems. It only steps in when the power fails or the voltage falls below a certain value. A line-interactive UPS also prepares the voltage during normal operation. The most technically complex variant is the online UPS. It supplies connected loads with mains voltage without interruption and delivers electricity of the best quality, even if the external supply fails completely.
Line-Interactive UPS
The operation of these devices is similar to those of the backup type. The difference lies in the following - linear-type power supplies have the ability to stabilize the voltage carried out with the assistance of a switching device. The advantage of this method is that there is no need to switch the power supply when voltage changes occur. It can reach up to 20% of the nominal value.
In this case, the voltage at the output does not change. The efficiency of protection of power supplies of this class reaches 85%. The operation of uninterrupted conditions can be divided into two groups. Devices that belong to the first-class produce a stepped sinusoid at the output. Devices that belong to the second class generate a high-quality sine wave, without changes. Its presence allows protection of such devices like electric motors and heating equipment.
Online UPS
This is one of the most reliable and highly technological devices. They work on the basis of double current change technology. This is the most advanced technology available today. The protection level of such a device reaches 100%, and regardless of whether it operates on batteries or from a power supply.
How a device of this type works - at the input to the device, the current is transformed into a constant one. After that, the reverse transformation takes place. That is, the just received direct current is converted into alternating current. The resulting current has high characteristics both in terms of the voltage sinusoid and in terms of its value.
Offline or Standby UPS
These are the simplest and cheapest UPSs. The UPS does not stabilize the voltage, the output amplitude and frequency change in the same way as the input. In normal mode, the UPS filters the alternating voltage with passive filters, and when it drops/rises relative to a certain level (for example, drops below 180V), they switch to batteries, operate on batteries for 5-7 minutes, and disconnect the load. The most common type of power source among consumers; for home appliances and a stationary computer. Its operation is sufficient. The principle of operation of the offline or Backup UPC is similar to the operation of a voltage relay: at the moment of loss of the electrical network. It switches power to the battery, allowing it to work for some time without a home network.
Main applications:
1.Protection of non-critical loads from voltage drop in areas with stable voltage without serious interference.
2.During a power outage, it provides enough runtime to save work in the process and complete an orderly shutdown of equipment.
3. In addition to power backup, most offline UPS systems offer basic surge protection as well.
Nowadays, it is difficult to imagine a residential private house without a "traditional" set of both simple and high-tech electrical appliances. Such as lighting systems, heating, ventilation, water supply and security, various kitchen appliances, TVs, PCs, laptops, vacuum cleaners, washing machines, and air conditioners. All modern engineering systems equipped with electronic components, as well as sophisticated household appliances in our houses, are becoming more and more perfect every year.
However, making life much easier and saving our time, the overwhelming majority of household appliances require compliance with mandatory operating conditions, one of which, of course, is high-quality and uninterrupted power supply. Inadequacy of the power supply parameters or sudden power outages, at best, will lead to incorrect operation or to a reduction in the service life of the equipment, at worst - to its premature failure. The installation of an uninterruptible power supply for the home will help prevent all these consequences.
A home UPS is simply necessary in cases where there are periodic power outages in the mains supply in a house or apartment. Most often, the reasons for this may be the effects of atmospheric phenomena on power lines (rain, hurricane wind, ice on the wires, causing them to break) or the improper condition of power grids and auxiliary equipment, leading to emergency shutdowns.
Price of Home UPS
There is a wide range of uninterruptible power supplies on the market that can provide backup energy not only for a home computer, refrigerator, or gas boiler. We often face the question of which UPS is the best in this or that price category, but in reality, it is very difficult to choose a specific model. As a rule, cheap uninterruptible power supplies do not have sufficient power reserves and are primarily intended for use with office equipment in order to preserve important information.
The cost of an uninterruptible power supply for a computer can vary significantly depending on its type and power. Additional features such as PC control or built-in automatic voltage regulator (AVR) also affect how much an uninterruptible power supply costs. Today, you can buy an inexpensive uninterruptible power supply in almost any online store or shopping center.
But before buying, you must first compare UPS from different manufacturers, determine the strengths and weaknesses of each of them. This will help you make the right choice and buy an uninterruptible power supply for your computer, the price of which will not hit your pocket hard. As a world-leading uninterruptible power supply manufacturers, Polinovel provides one of the best UPS for home.
How does the UPS inverter work?
With the development of alternative energy sources, in particular with the massive introduction of solar panels, the voltage inverter is increasingly used. Since both direct and alternating currents are used, it is often necessary to convert energy from one kind to another. Inverters are used both as independent devices and as part of uninterruptible power supply systems (UPS).
As part of uninterruptible power supplies (UPS), inverters allow, for example, to receive continuous power supply to computer systems, and if the voltage suddenly disappears in the network, the inverter will instantly begin to supply the computer with energy received from the backup battery. At least the user will have time to gracefully shut down and shut down the computer.
In larger uninterruptible power supply devices, more powerful inverters with large-capacity batteries are used that can autonomously power consumers for hours, regardless of the network, and when the network returns to normal, the UPS will automatically switch consumers directly to the network, and the batteries will begin to charge.
Batteries are the lifeline of any uninterruptible power supply system. LiFePO4 is the safe and reliable choice for a UPS. LiFePO4 UPS batteries provide higher thermal stability making them virtually incombustible and safe with a long service life – even in high-temperature environments. LiFePO4 UPS batteries are rapidly gaining positions and spreading in the world market due to their irrefutable advantages.
Performance Benefits of LiFePO4 UPS Batteries:
LiFePO4 UPS batteries have many advantages:
●the efficiency of a typical battery reaches 95%;
●no memory effect, the ability to supply power at any discharge level;
●battery operation in deep discharge mode;
●the number of complete charge-discharge cycles is 3500, partial - 8000;
●excellent indicators of volume and mass-energy density;
●300% more compact and lighter than lead power supplies;
●fire safety;
●preservation of functionality in a wide temperature range (–20.. + 60 degrees).
Durable
LiFePO4 lithium batteries provide a 10 times longer life than lead-acid batteries. LiFePO4 lithium batteries provide 5,000 cycles or more, and the depth of discharge has a minimal effect on the service life. Lead-acid batteries typically only provide 300-500 cycles, and high discharge rates will significantly shorten their lifespan. Although lithium-ion batteries are more expensive, the long-term savings are enormous. Lithium batteries provide better performance and longer life than lead-acid batteries. This means fewer replacement costs as well as less downtime.
Heat Resistance
LiFePO4 lithium batteries are 2.5 times more efficient at low temperatures. Safe operation up to 65 ° C.
Fast and safe battery charging
LiFePO4 lithium batteries provide high-efficiency charging. The battery can be fully charged within 1-3 hours. Built-in overcharge protection.
Constant capacity
The full capacity of the LiFePO4 UPS battery is available throughout the discharge. The voltage does not drop like lead-acid batteries.
Fast and efficient
Lithium can be charged and discharged at high rates, providing maximum versatility for all types of applications. Fast charging minimizes downtime. Lead-acid batteries must be charged in stages over long periods of time, and they perform ineffectively during long discharge periods, making them less versatile than their lithium counterparts. Lithium's efficiency is unmatched, especially in high voltage situations. Unlike lead-acid, temperature fluctuations and discharge depletion hardly affect the power supply of lithium. The LiFePO4 UPS battery is the ideal choice for applications that require battery drain modes or require operation in extreme weather conditions.
As a world-leading uninterruptible power supply manufacturers, Polinovel provides a full line of 12 and 24-volt LiFePO4 batteries for use in UPS, golf carts, electric vehicles, boats, yachts, alternative energy, solar energy, backup power, and many other applications. Polinovel has high-quality LiFePO4 batteries for our LifePO4 UPS product family that provide maximum safety, high reliability, and long service life.