What is UPS power supply?
UPS (Uninterruptible Power Supply) is a system equipment that connects the storage battery with the host and converts DC power into commercial power through module circuits such as host inverter.
It is mainly used to provide stable and uninterrupted power supply for a single computer, computer network system, electromagnetic valve, pressure transmitter and other power electronic equipment.
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I. Functions and Principles
In the power system, the core equipment such as DCS, monitoring system, automation instrument, dispatching communication system and microcomputer system require very high quality and reliability of power supply, and need special UPS for power supply. Most of these loads are single-phase loads.
Power UPS system is generally composed of three parts: power UPS host, bypass voltage stabilizing cabinet and output feeder cabinet.
1. UPS main cabinet: input and output isolation transformer, rectifier, inverter, static bypass switch, bypass switch and check diode;
2. Bypass isolation voltage stabilizing cabinet: bypass isolation transformer, bypass voltage stabilizer and manual/bypass maintenance switch;
3. Feed cabinet: loop power distribution device, monitoring instrument, control switch and signal indication, etc.
When the commercial power is normal, the AC power supply is isolated, rectified and filtered, and then the inverter provides a stable AC power supply to the load. If the AC input is abnormal or power is cut off, the DC screen will provide DC through the unidirectional diode and output it to the load after inverter. When the DC screen is under-voltage or powered off, it is statically turned on and switched to the AC bypass power supply.
References:
Power UPS power supply _ Baidu encyclopedia
What is the UPS in the computer?
Regulated power supply
Sometimes, we are writing an article, or programming, or drawing with a brush, and suddenly the screen turns black-the power goes out. Alas, everything in it is gone, and I have lived in vain for so long. I didn't even have a chance to fix it. If this happens to scientists engaged in scientific research, the loss will be even greater.
Energy can find a way to keep the computer working, or when the power supply stops, the machine can keep power for a short time, so that we have a chance to save the finished work so that we can continue to work next time? First, it is difficult to buy a generator, which is basically impossible for ordinary users. The second case, which is easier, is to buy a UPS.
UPS stands for Uninterruptible Power Supply. As the name implies, it is such a machine. When the mains supply stops, the power supply can be maintained for a period of time, which gives us time to save the disk and then turn it off calmly. UPS power supply can be divided into online power supply and standby power supply. When the machine is powered on, it inverts the mains alternating current and stores it in its own power supply. Once the power supply is stopped, you can provide power to keep the computer working for a period of time, which may be 10 minute, half an hour, etc.
What does ups mean?
Ups refers to uninterruptible power supply.
Uninterruptible power supply (UPS) is a system equipment that connects the storage battery with the host and converts DC power into commercial power through module circuits such as host inverter. UPS equipment can usually provide overvoltage or undervoltage protection.
Matters needing attention in the application of ups uninterruptible power supply
1. Regularly clean the dust inside UPS, measure the voltage of battery pack, replace unqualified batteries, check the operation of fans, and detect and adjust the system parameters of UPS.
2. Place the UPS power supply away from direct sunlight and leave enough ventilation space. At the same time, it is forbidden to connect the inductive load to the UPS output port.
3. Strictly follow the correct startup and shutdown sequence to avoid the sudden increase or decrease of load, which will cause the voltage output of UPS power supply to fluctuate greatly and make UPS power supply unable to work normally.
Baidu encyclopedia-uninterruptible power supply
What is UPS? Did it work?
UPS, which means "Uninterruptible Power Supply" in Chinese, is the abbreviation of "Uninterruptible Power Supply" in English. It can ensure that the computer system will continue to work for a period of time after the power failure, so that users can save the disk urgently, so that you will not be affected by the power failure and will not lose data. In computer system and network applications, it mainly plays two roles: one is emergency use to prevent sudden power failure from affecting normal work and causing computer damage; The second is to eliminate "power pollution" such as power surge, instantaneous high voltage, instantaneous low voltage, wire noise and frequency offset, improve the quality of power supply and provide high-quality power for computer systems.
UPS can be divided into online and offline. Make sure which one you have, and you can debug it in the control panel. At present, the mainstream UPS manufacturers include APC and Sander, all of which provide various levels of UPS to meet the needs of different user groups.
From the basic application principle, UPS is a kind of power protection equipment with stable voltage and frequency output, which is mainly composed of energy storage device and inverter. It is mainly composed of rectifier, storage battery, inverter and static switch.
Rectifier: Rectifier is a rectifying device, which is simply a device that converts alternating current into DC. It has two main functions: one is to change alternating current into direct current, which is filtered and supplied to the load or inverter; Second, provide charging voltage for the battery. Therefore, it also plays the role of a charger;
Battery: The battery is a device used by UPS to store electric energy. It is composed of several batteries connected in series, and its capacity determines the time of maintaining discharge. Its main functions are:
1. When the commercial power is normal, the electric energy is converted into chemical energy and stored in the battery.
2. When the commercial power fails, the chemical energy is converted into electric energy and provided to the inverter or load;
Inverter: Generally speaking, an inverter is a device that converts direct current into alternating current. It consists of inverter bridge, control logic and filter circuit.
Static switch: Static switch, also known as static switch, is a contactless switch. It is an AC switch composed of two silicon controlled rectifiers in reverse parallel, and its closing and opening are controlled by a logic controller. There are two types: conversion type and parallel type. The transfer switch is mainly used in two-way power supply system, and its function is to realize automatic switching from one way to the other. The parallel switch is mainly used to connect the inverter with the mains or multiple inverters in parallel.
What is ups?
UPS is the uninterruptible power supply, which is the system equipment to ensure that the computer system can continue to work for a period of time after power failure, so that users can save the disk in an emergency and not be affected by power failure. UPS is a device that connects the storage battery with the host computer and converts DC power into commercial power through module circuits such as host inverter, which is used to provide stable and uninterrupted power supply for computer network systems or other power electronic equipment.
UPS system equipment, when the mains input is normal, UPS will stabilize the mains and supply the load. At this time, UPS is an AC voltage regulator, and it also charges the battery in the machine. When there is an emergency power failure, UPS will switch the battery power supply through the inverter, and immediately provide 220V alternating current to the load to keep the load working normally and protect the hardware and software of the load from being damaged.
UPS can meet the reliability requirements of China power grid environment, network monitoring, network system, medical system and other power grids, overcome the increasingly serious problems brought by centralized power supply of medium and large computer network systems, and develop by using new digital technologies. The third OEM is pure online intelligent UPS. The implementation of online maintenance management can avoid the shortcomings of traditional methods and achieve good benefits.
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UPS has limited uninterrupted power supply time. Time is limited by the energy stored in the battery itself. When there is a power failure, what needs to be done is to restore the AC power supply when the UPS battery supplies power, such as starting the standby AC circuit to let the oil generate electricity. If not, you need to save the disk urgently and wait for the AC power supply to return to normal before continuing.
UPS is required for important occasions and places. Banks, securities exchanges, Internet, data centers and other institutions all need UPS power. In the case of power failure, UPS can instantly start battery power supply, maintain the normal power supply of key information equipment in the load, and ensure that the software and hardware of the information system do not have accidents or data loss. Like the backstage of some main venues, UPS is also needed to maintain normal power supply.
UPS has its own brand in China market and China. Ke Hua broke through the bottleneck technologies such as "master-slave adaptive multi-machine parallel control" and "high-power three-phase UPS", and constantly introduced new high-end UPS products with various power levels, breaking the technological monopoly of foreign brands on high-end UPS in China. Products are widely used in the Bird's Nest, the main venue of the Beijing Olympic Games, the Shanghai main stadium of the Women's World Cup and the Three Gorges Project.
Baidu encyclopedia-uninterruptible power supply
What is ups?
UPS is short for Uninterruptible Power Supply, which means Uninterruptible Power Supply System or Uninterruptible Power Supply System. In other words, once the mains fails, the standby power supply will continue to supply power to the original load almost without any breakpoint.