博文

目前显示的是 2018的博文

Industrial applications have special requirements for UPS

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1.To have super environmental adaptability Unlike commercial  UPS , which is placed in data centers and server rooms under strict control of temperature, humidity and cleanliness,  industrial UPS  is often difficult to ensure stable temperature and humidity in the industrial environment. In addition, in special industrial occasions, the air in the environment may also contain corrosive gases, which will affect the normal operation of power supply equipment and reduce its performance over a long period of time. Therefore, this requires industrial UPS to have super environmental adaptability, and to cope with the test of harsh environment with comprehensive high-performance performance. 2.To be able to effectively eliminate all kinds of radio disturbances Power grid pollution in industrial application site is very serious, and it often faces the situation of power supply shortage and frequent accidents. Precision production equipment in industrial production line always has very s

Application occasion and function of solar charging controller

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The  solar charging controller  in off-grid solar power generation system is specially designed to provide intelligent charging and discharging management for storage battery. The solar charging controller adopts PWM constant voltage charging mode, which can effectively protect storage battery and increase its service life. 1.Application occasion It can be widely used in off-grid solar power supply systems such as family, school, street, station, power station, pastoral area, field and so on. 2.Functional characteristics (1)MCU Intelligent Control, Excellent Performance. (2)The control circuit is completely isolated from the main circuit, which is safe and reliable. (3)Intelligent battery charging management to prolong battery life. (4)Simple and concise LED display shows the operation status of the equipment at a glance. (5)Wide temperature range, high altitude. 3.Tecchnical requirement (1)Maximum charge-discharge current: 10A~60A (2)Rated DC Voltage: 12V/24V/48V (3

Factors affecting the efficiency of the inverter

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The only way to improve the efficiency of the  inverters  is to reduce the losses. The main losses of the  solar inverters  come from IGBT, MOSFET and other power switches, as well as magnetic devices such as transformers and inductors. Loss is related to the current and voltage of components and the process adopted by the selected materials. The losses of IGBT are mainly conduction loss and switching loss. The conduction loss is related to internal resistance and current passing through the device, switching loss is related to switching frequency of the device and DC voltage of the device. The main loss of inductance is copper loss and iron loss. Copper loss refers to the loss caused by the resistance of inductance coil. When the current is heated by the resistance of inductance coil, part of the electric energy is transformed into heat energy, which is called copper loss because the coil is usually wound by insulated copper wire. Copper loss can be calculated by measuring short-

How to Improve the efficiency of Inverter

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There are currently three technical routes. First, space vector pulse width modulation (SVPWM) is used to reduce the loss. Secondly, silicon carbide materials are used to reduce the internal resistance of power devices. Third, three-level, five-level multi-level electrical topology and soft switching technology are adopted to reduce the voltage at both ends of power devices and the switching frequency of power devices. 1.Space Vector Pulse Width Modulation (SVPWM) SVPWM is a fully digital control method, which has the advantages of high utilization rate of DC voltage and easy control. It is widely used in  inverters . With high utilization of DC voltage, lower DC bus voltage can be used under the same output voltage, which reduces the voltage stress of power switching devices, reduces the switching losses on devices, and improves the conversion efficiency of inverters to a certain extent. In space vector synthesis, there are many combinations of vector sequences. Through differe

Comparing 48V and 12V power supply from the voltage allowable range

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We know that the input voltage range of 12V power supply server motherboard is usually 5% positive and negative difference. If we adopt the structure of 12V bus + 12V battery BBU, it is difficult to achieve this voltage allowable range. Especially at high currents that may be as high as 23,000 amperes, the voltage drop at impedance of 1 milliohm is as high as 2 or 3 volts, and the voltage drop of copper exhaust is much higher than the voltage range of 5% or about 0.6 V. If the voltage drop is controlled by current sharing among multiple power outlets and buses, in addition to the cost and space mentioned above, additional DC/DC voltage stabilization circuit is needed to ensure the voltage reduction caused by BBU discharge. The total cost of this DC/DC voltage regulator circuit will be very high, which will also lead to the overall uneconomical system. In 48V bus structure, the main board usually has a wide range of input voltage of 36V-58V, bus voltage drop is no longer a problem, and

What is solar controller

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The  solar energy control system  consists of solar panels, batteries, controllers and loads. Solar controller  is a device used to control photovoltaic panels to charge batteries and provide load controlled voltage for voltage sensitive devices. It regulates and controls the charging and discharging conditions of the battery, and controls the output of the solar cell module and the battery to the load according to the power demand of the load. It is the core control part of the whole  solar power supply system . It is specially designed for the power supply system of telecom communication or monitoring equipment in remote areas. The charge control and load control voltage of the controller are fully adjustable, and the battery voltage, load voltage, solar array voltage, charge current and load current can be displayed. Almost all solar power systems powered by batteries need a solar charge and discharge controller. The function of the solar charge and discharge controller is to r

Surface oxidation of integrated cabinets should be handled in a timely treatment

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The surface oxidation of the integrated  outdoor cabinet  needs to be treated in time. When making the sheet metal cabinet, the thickness of the metal must be higher than that of the processed products. However, because metal materials are produced in large quantities by manufacturers, it is inevitable that they will encounter oxidized materials. For such materials, how should we deal with it? Oxidation is a common problem, especially for industrial equipment. Paint spraying or electroplating are usually used for antioxidant treatment on equipment, but oxidation can not be avoided in an all-round way. Because the sheet metal cabinet is made of different materials. Therefore, we need to pay attention to the selection of materials, especially whether metal materials are overoxidized, if this is the case, we can not choose this plate processing. Firstly, the limited stainless steel is heated by shearing, edge binding, welding or artificial roasting, which results in black oxide skin.

Advantages and disadvantages of using lithium battery in data center

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VRLA batteries are commonly used in three-phase sources of  UPS  systems. Because of its weight and size, data centers need to have an enhanced load bearing structure. The performance characteristics of VRLA batteries will also be affected by temperature, thus increasing the load of the air conditioning system. VRLA batteries are not particularly durable and need to be replaced at regular intervals, which also results in an increase in operating costs. Because VRLA batteries are not economically viable alternatives, design engineers must tolerate their shortcomings. However, the situation of lithium batteries has changed in recent years. The first uninterrupted power supply system powered by lithium batteries was launched in 2016. Lithium batteries are now used in all major factories, and this direction has been recognized as the most promising choice. As of 2025, the lithium battery solution will account for 40% of the UPS market in the data center. When the capacity of lithium-c

Is inverter suitable for capacity reduction?

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At present, there are many types of  inverters  on the market. In order to simplify the management and explore the advantages of centralized purchasing, many EPC manufacturers often use limited types of inverters to design as many cases as possible, which will inevitably involve the use of inverter capacity reduction. Small scale capacity reduction is not a big problem. However, the use of large-scale capacity reduction, not only will cause a waste of inverter costs, but also can not get the desired power generation. 1.Waste of resources For a simple example, the original  10kW inverter  used to carry 6kW photovoltaic components, equivalent to the inverter used only 60% of the workload, time will inevitably lead to waste of resources, not conducive to the LCOE optimization. Of course, the small case is good, if it is a MW large case, waste can not be ignored. 2.Shorten the string length and reduce overall power generation. (a)Not conducive to string optimization design For some

Compare 48V power and 12V power from cost

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The cost mainly considers the difference between the four parts. We compare the whole power system. The first is the power plug-in box, because  48V DC power supply  in the telecommunications industry, large-scale application, low cost, single watt cost is much lower than the 12V server power price. Moreover, there is no calculation of the total cost difference caused by the need for multiple power plug-ins in the 12V architecture, while the 48V architecture only needs a single plug-in box. Secondly, the battery BBU, as mentioned earlier, the 12V BBU structure of the battery is often required to regulate DC / DC power supply, and the 48V structure is not required to configure, this part of the battery BBU using 48V structure is also very advantageous; Secondly, the bus bar and other transmission and distribution, because the 48V structure greatly reduces the size and number of copper bars, and only a single plug-in frame, this part of the 48V structure also has a great cost advantage;

The basic principle of PWM

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The basic principle of pulse width modulation (PWM): The control method is to control the on and off of the switching device of the  inverter  circuit, so that the output end can get a series of pulses with equal amplitude, and use these pulses to replace the sine wave or the required waveform. That is to say, a plurality of pulses are generated in the half period of the output waveform, so that the equivalent voltage of each pulse is sinusoidal waveform, and the output is smooth and the low-order harmonics are few. By adjusting the width of each pulse according to certain rules, the output voltage and frequency of the inverter circuit can be changed. For example, by dividing the sinusoidal half-wave waveform into N equal parts, the sinusoidal half-wave can be regarded as a waveform composed of N pulses connected to each other. The pulse widths are equal to ∏/n, but the amplitudes are different, and the top of the pulse is not a horizontal line, but a curve. The amplitudes of each p

Stainless steel process for outdoor cabinets

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Outdoor stainless steel cabinet technology is constantly improving, so that stainless steel cabinet has the best anti-vibration, anti-impact, anti-corrosion, anti-dust, waterproof, anti-radiation performance, in order to ensure that the equipment works stably and reliably. All designs are people-oriented, so that users can use more smoothly, SOROTEC focused on stainless steel  outdoor cabinet  technical design, and technical updates. Stainless steel cabinet is the most commonly used toughened glass doors and mesh doors. And its quality plays a key role. Usually, the front and rear door panels are never allowed to have distortion, expansion, depression, burrs and other phenomena, its flatness is usually less than 2 mm. The difference in the same slot also needs less than 2 mm, and the installed door panels can not have obvious upward or downward adverse phenomenon, to ensure the flexibility of disassembly and assembly. When opening and closing the door, it must be flexible. The ang

SOROTEC UPS applied to the 60th anniversary celebration conference of the Ningxia Hui Autonomous Region

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On the evening of September 19, the 60th anniversary celebration meeting of Ningxia Hui Autonomous Region was held in Helan Mountain Stadium.  SOROTEC  power frequency  GP9335C series 500KVA UPS & 600KVA UPS  were used in the meeting. The product design is highly integrated with digital technology, improving MTBF and reliability. The whole system is controlled by a main control board is independent, with high speed DSP control  inverter , 6 unit with free frequency modulation PWM, IGBT integration, to provide clean and stable output voltage, to ensure stable and reliable operation of equipment. During the celebration, SOROTEC dispatched technical engineers to the site throughout the day to ensure that the power supply system provides a 24-hour uninterrupted supply of stable, pure and reliable electricity. SOROTEC GP9335C series 10-800KVA products have been successfully applied to the State Grid/Southern Power Grid, PetroChina System, Military, Medical, Rail Transit, Banking

The project of Telecom base station(BTS Solar power system) for China Tower Successfully Installed in Qinghai,China

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Shenzhen Soro Electronic Co., Ltd is one of the top-leading Power Supply and  solar inverter manufacturer , to deploy Qinghai China Tower solar-powered base transceiver stations. SOROTEC  installed the base stations, using a solar and diesel generator hybrid power solution to provide mobile connectivity in rural areas. The base stations will primarily be powered by harnessing solar energy without having to be linked to power grid.The diesel generator will be used as a backup. The new  BTS Solar power system  will improve GP’s network performance by preventing service interruption, a previously persistent challenge in Qinghai due to power instability. It will also lower fuel consumption and CO2 emissions, and reduce the cost of refuelling and site visits,thereby lowering GP’s total cost of ownership. These savings will offset GP’s capital investment in just two-to-three years. SOROTEC has developed a series of end-to-end green solutions for wireless broadband networks, using a combin

Why is 48V direct power supply technology the future direction of data center?

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With the large-scale construction of data center, users pay more attention to energy cost and efficiency. The future development direction of power supply technology in data center must be direct power supply technology. While eliminating the traditional  UPS  equipment investment and site occupation and reducing the early cost, it also reduces the later operating cost by reducing conversion stages and improving power supply efficiency. And what is said here to improve efficiency, not only refers to the high efficiency of the grid side to the input side of IT equipment on the supply circuit path, but also the high efficiency and green of primary energy side to the CPU and other energy path. Although the PUE value of traditional concept is likely to increase, the energy consumption per unit calculation is reduced. The overall development trend of power supply technology in future data centers is that high voltage/centralized/AC large UPS will develop towards low voltage/distributed/DC

Comparing 48V power and 12V power supply according to battery preparation time

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Since only 5% allowable voltage range under the 12V bus structure, the discharge of the battery-mounted bus will be very narrow in the voltage range. Even if a DC / DC regulator is added, the allowable battery discharge time will be less, because the power supply under-voltage protection circuit will be triggered very quickly. There is also the risk of heat dissipation under 12V low voltage and high current, so it is difficult to have a long battery standby time under the 12V bus structure. If the 48V bus structure is adopted, the battery can be directly connected to the 48V output bus because of its wide voltage allowable range, so the battery standby time can be longer, and the system security and reliability can be effectively guaranteed. These characteristics have been fully verified in the communication industry. SHW48100 Hot Swappable 48VDC Outdoor Solar Telecom Power Supply System for BTS 1.Hot Swappable Easy to Maintance 2.Smart Monitor Control System 3.Various Human-com

The Road to Change, the Application of Solar Energy in the Communications Industry

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When I think of the off grid solar applications, one main sector that has tremendous captive power requirement is telecommunications. With consistent fall in the average revenue per user and a whopping 86% increase in the minutes of usage in the past decade, India is one of the countries with increasing market competitionand highest number of MoU’s. The numbers of operators have almost tripled in the last 3 years and there is a mad headed competition to reduce the cost especially if theservices have to be made affordable to the sub urban and rural areas. Rural teledensity improvement is possible only with low cost service. With power contributing to 25% of total network cost, one of the key areas where the telecom providers are looking forward to reduce cost is energy. Unfortunately, poor quality of grid supply in suburban and semi-rural areas and no grid supply at many rural areas is increasing the energy cost for the telecom providers. 10% of telecom towers in India have no powe