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

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 small UPS, from centralized lead-acid batteries in computer rooms to distributed lithium batteries embedded in IT cabinets and even servers, from polluted fossil fuels to environmentally friendly green energy sources. .

The core of uninterruptible power supply technology in data center is uninterruptible power supply and its battery, so different battery connection positions also determine different power supply architecture. At present, the backup battery voltage of the industry mainstream from high to low has more than 400 volts of UPS, to 380V, 240V and 48V of DC power supply, and even 12V of batteries embedded in IT equipment. There are even small UPS with flywheels of medium voltage or lower voltage such as 5V. The closer the battery is to the terminal server motherboard or CPU, the more decentralized the power supply system, and the more distributed the corresponding IT system; the closer the battery is to the terminal, the higher the customization degree of the power supply system, the greater the difficulty for ordinary users to carry out the scale; the closer the battery is to the terminal, the higher the control and management level of IT power supply and battery required. Finally, the closer the battery is to the end, the smaller the transition stages from the grid to the CPU supply path, resulting in higher conversion efficiency, but the transmission loss may increase on the low-voltage side. Therefore, compared with centralized and distributed, high-voltage or low-voltage, AC or DC, the choice of different power supply structure will greatly affect the reliability of the power supply system, power supply efficiency, cost, and so on, as well as the maturity of technology, ecology and application flexibility.

In addition, with the development of battery technology and the introduction of green energy such as wind energy, solar energy and fuel cell into the data center, more opportunities and challenges are brought to the data center. In a sense, the technology of uninterrupted power supply in data centers will ultimately depend on the development of battery technology, and battery innovation will bring changes in the power supply architecture of data centers. For example, with the development of technology from traditional low-density lead-acid batteries to high-energy-density lithium batteries, backup batteries are likely to be replaced by IT cabinets or even placed inside IT devices. With the development of the same battery technology, it is possible to realize the energy storage of wind energy, solar energy and other volatile green energy. It will also change the traditional data center from a single grid power supply mode.

MPS9335C 10-300KVA High Frequency Online Modular Type UPS

1.Superior energy saving and environment-friendly:
Efficiency > 96% at 50%-75% rated load, and > 95% at 25% rated load; Input PF > 0.99,input THDi<3%.
2. Superior capability of powering load:
Output PF is 0.9 or 1, no need of power deration with load of leading or lagging PF.
3. Easy-to-install:
Top or bottom cabling, no need of input cabling cabinet.
4. Easy-to-maintain:
Full front access, UPS, failed part can be replaced shortly.
5. Easy-to-modify:
The number of battery cells can be configured flexibly, so the original batteries can be used when modifying the legacy system; moreover, the battery cell can be replaced in time when it fails
without interrupting the normal operation of UPS.
6.6-inch extra large LCD that can display 12 language (Chinese ,English ,Russian, French ,Spanlish and so on).
7.Provide large LCD touch screen (optional).
8.Each UPS modules provide 4.5KW charge capacity. equivalent to 10 to 12A.
9.On-Line Double Conversion, fully isolating the influences of power grid pollution and power failure from utility power supply and diesel generator to load.
10. Advanced DSP full digital control technologies realize higher system stability, online capacity expansion and maintenance.
11.Advanced distributed active parallel technology realizes parallel operation of 4 UPS units and online capacity expansion without centralized bypass cabinet.
12.Digital load sharing technology features extra low cross current and extreme high system reliability in parallel operation.
13.Adaptive to severe power grid environment due to extra wide input voltage and frequency ranges.
14.Extra strong capability to withstand output overload and short circuit, ensuring the system stability and system safety at limit conditions.
15 Intelligent battery management maintains battery automatically to prolong the battery life.
16. Efficient heat dissipation and effective protection under severe environment due to its independent layer-sealed ventilation channel and redundant fan design, as well as the paint-protected
circuit boards and built-in dust filter.
17.Applicable voltage south America.

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