博文

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 puls…

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 angle sh…

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 System, Chemic…

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 combination of …

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 s…

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-computer In…

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 power s…