The main differences between the industrial UPS and high frequency UPS are embodied in the rectifier and transformer. Industrial UPS rectifier uses SCR device, the voltage stress is small, the current stress is big, the high frequency UPS mainly uses the IGBT device, the current stress is small, the voltage stress is big. SCR and IGBT are currently completed devices, as long as the application properly, there will be no difference in the reliability. In fact, the inverter part of industrial UPS is also use of IGBT, and there is no reduction in the reliability of industrial UPS power supply, and there is no evidence to prove that the inverter is the weak link in the industrial UPS. From the topological aspect, industrial UPS with the phase controlled rectifier + full bridge inverter, high frequency UPS generally with rectifier + half bridge inverter. These topologies are very popular in the electronics technology, and there is no more reliable question, its reliability depends on the level of design.
SOROTEC will attend the 2017 #Solar Middle East Exhibition in Dubai in Feb.14-16th. We will exhibit our newest UPS & Solar Inverter products .Welcome to visit us at Booth Z2.B30! Exhibition Name: Solar Middle East Exhibition (2017) Exhibition Date: Feb.14-16,2017 The Booth No.: Hall Z2-B30 For more information,please contact us by:ups@soroups.com
Solar panels: This is the most central part of the outdoor solar power system, its main role is to convert the solar energy into electric energy, so as to promote the work of the load. Solar cells are divided into silicon solar cells, polycrystalline silicon solar cells, amorphous silicon solar cells. Because the single crystal silicon cell is rugged, long life (generally up to 25 years), high photoelectric conversion efficiency than the other two types, causing it to become the most commonly used battery.
Solar charging controller: its main task is to control the state of the whole system, while protect the battery from over charge, over discharge. At a particularly low temperature, it also has the function of temperature compensation.
Solar battery deep circulation: it is mainly stored transformed power by solar panels, generally for VRLAB, while low temperature area requires the use of solar colloid battery, can be used repeatedly.
Inverter: in the whole monitoring system. Some devices need to provide 110V, 220V AC power, and the direct output of solar energy inverter is generally 12VDc, 24VDc, 48VDc. So in order to provide power to the 110VAc and 220VAC devices, the DC / AC inverter must be added in the system, and the DC power generated by the solar hybrid system can be converted into AC power.
Generally, the online UPS system can be divided into three main application areas.
1.information technology Commercial UPS has been closely integrated with information technology, the bidding specifications of UPS equipment for information technology do not need special technical requirements. Telecommunications, banking, insurance companies and large enterprise data centers are typical examples of commercial UPS applications. In these applications, the interruption of the AC power supply may result in the interruption of data processing and telecommunications transmission, but usually does not cause direct damage to people or property.
2.Critical program or process control For decades, the design and application of industrial UPS system to the key program or process control applications has accumulated rich experience. In the application areas, the load side of the AC power supply interruption or instability, may cause dangerous chemical instability failure, or cause huge damage to the production system and even the surrounding environment. Petrochemical complex and power station are typical examples of the use of chemical or steam processing operations. In this process, if the power supply is interrupted, it will be dangerous. Due to the possible risks and losses from the control power supply, it is necessary to design a special UPS system for the application of the industrial environment, and the performance test is more stringent than the commercial UPS.
3.Common program or process control We call this the middle part of the application the light industry. Even if the AC power is interrupted in the processing operation, the application types are not fatal. In these processes, UPS’s failure or instability may result in the loss of finished products or the re arrangement of product equipment for the hundreds artificial hours. The drug and food and beverage industry will be an example of the light industry. In these areas, the high reliability of industrial UPS system will effectively avoid the above situation. Of course, due to the popularity of commercial UPS, in these areas also have applications.
1.Modular design, its advantage is not affected by the difference between modules, effects of shade, while reducing the best working point of photovoltaic battery and solar system inverter components do not match the situation, increase the maximum generating capacity. 2.In the rainy day, foggy area, can generate power for a long time. 3.String inverter with small volume and light weight, convenient handling and installation, do not need specialized tools and equipment, also do not need a special distribution room, can simplify the construction, reduce the area, DC line connection does not need DC bus box and DC power distribution cabinet. 4.Low power consumption, low impact of failure, convenient replacement and maintenance. 5.Multi path MPPT tracking, reduce the impact of the block and the direction, and when a fault occurs, does not affect the power generation, high reliability.
Disadvantages of string inverter
1.More electronic components, power devices and signal circuits on the same board, difficult to design and manufacture. 2.The electric power device of small gap, not suitable for high altitude area. 3.Outdoor installation, is very easy to cause the shell and heat sink aging exposed to the weather. 4.When a plurality of solar energy inverters in parallel, total harmonic is high, THDI of single inverter can control to more than 2%, but if more than 40 sets of inverter in parallel, total harmonic superposition and difficult to suppress.
