What is an uninterruptible power supply do you make it God to give you answers
First, what is an uninterruptible power supply
UPS (Uninterruptible?Power?System/Uninterruptible?Power?Supply), that is, the uninterruptible power supply, is the battery (mostly lead-acid maintenance-free batteries) and the host connected, through the host inverter. The uninterruptible power supply (UPS) is a system that connects a battery (mostly a lead-acid maintenance-free battery) to the host and converts the DC power to utility power through the host inverter and other modular circuits. It is mainly used to provide stable and uninterrupted power supply to a single computer, computer network system or other power electronic equipment such as solenoid valves, pressure transmitters and so on. When the utility power input is normal, the UPS will be the utility voltage regulator supplied to the load, at this time the UPS is an AC utility voltage regulator, at the same time it is also charging the battery in the machine; when the utility power interruption (accidental blackout), the UPS will immediately the battery's DC energy, through the inverter zero-switching conversion to the load to continue to supply 220V alternating current, so that the load maintains its normal work and protects the load soft. hardware from being damaged, UPS devices are usually able to provide protection against overvoltage or undervoltage.
Role of UPS
UPS has several basic functions:
1. When the grid voltage is normal, the utility voltage is supplied to the load through the UPS voltage regulator, the good performance of the UPS itself is a good AC voltage regulator, while improving the quality of the power supply; at the same time, it is also charging the batteries in the machine, storing backup energy.
2. Grid voltage abnormalities (undervoltage, overvoltage, power-down, interference, etc.) UPS inverter will be converted from the battery's DC energy to AC energy to maintain the power supply to the load.
3. The UPS switches between grid power and battery power on its own to ensure uninterrupted power supply to the load. And the switching time can be selected according to the precision of the equipment to withstand.
Second, the characteristics of the uninterruptible power supply
UPS is aimed at China's power grid environment and network monitoring and network systems, medical systems, such as the reliability of the power supply requirements, to overcome the centralized power supply of medium-sized and large-scale computer network systems caused by the increasingly harsh power supply grid environment, the third generation of the development of a new digital technology. DC power supply is a device that maintains a steady current in a circuit. Such as dry batteries, storage batteries, DC generators.
UPS and DC power supply is an important enterprise power supply protection equipment, the traditional maintenance management includes: ① daily inspection of the appearance of the regular replacement of batteries, filter capacitors, fans and other wear parts, overhaul to do the battery activation, etc.; ② transformation or the use of modernization equipment, the use of high-level tools to test the performance of the battery. This management method of high investment costs, maintenance personnel workload, not easy to grasp the real-time operating status of the equipment and key data, equipment accident prevention capability is low. The implementation of online maintenance management can avoid the shortcomings of the traditional way, to obtain good benefits.
UPS in Chinese means "uninterruptible power supply", is the English "Uninterruptible?Power?System/Uninterruptible?Power?Supply" abbreviation, it is the most common type of power supply in the world, it is the most common type of power supply in the world.
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Third, the uninterruptible power supply purchase notes
1, first of all, to determine how much power your equipment, generally speaking, the power of an ordinary PC or industrial control machine in the 200W or so, the Apple machine in the 300W or so, the server in the 300W and 600W between the power value of the other equipment can be referenced to the device's other devices can refer to the power value of the device's instructions.
2, the second should understand the UPS power rating has two ways to express: apparent power (unit VA) and the actual output power (unit W), due to the presence of reactive power so caused by this difference, the two conversion relationship: apparent power * power factor = actual output power.
3, UPS is usually divided into two types of industrial frequency machine and high frequency machine. Industrial frequency machine by silicon controlled SCR rectifier, IGBT inverter, bypass and industrial frequency step-up isolation transformer. Because of its rectifier and transformer operating frequency are industrial frequency 50Hz, as the name suggests, called industrial frequency UPS.
High-frequency machine is usually composed of IGBT high-frequency rectifier, battery converter, inverter and bypass, IGBT can be controlled by controlling the drive added to its gate to control the opening and closing of the IGBT, IGBT rectifier switching frequency is usually in the several K to dozens of KHz, or even up to Hundreds of KHz, relative to the 50Hz industrial frequency, ?
On reading the above introduction you must have an understanding of UPS. UPS have an understanding of it, uninterruptible power supply because of high efficiency, high reliability, high power, modularity, green, energy saving, environmental protection and other characteristics, so has a good development prospects, the current market demand is also expanding, the country has also promulgated a series of development policies and development plans to encourage the development of the industry. About what is intermittent power supply is introduced here, want to know more please continue to pay attention to Tubar rabbit learning to decorate it!