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  • How to choose UPS power supply for the computer room? (Part-2)

    How to choose UPS power supply for the computer room? (Part-2)

    Jun , 27 2022
    Enterprise data centers are becoming more and more important nowadays. How to ensure the stable operation of enterprise data centers has become a very critical factor. UPS is a standard accessory for many enterprises in data centers, so how to choose a UPS power supply suitable for enterprise applications? In our last article we discussed about some options, now we are going to discuss in details....
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  • Efficiency of DC power system

    Efficiency of DC power system

    Jun , 27 2022
    In this article we will explain the efficiency of DC systems and progress to AC systems on the next article. In very basic terms, efficiency is the measure of how much power is not being wasted by a system. More waste is less efficient. In electrical systems, we measure the power entering a system in watts; the unit of measure for work performed. Efficiency is the ratio of (Power-In) -vs. - (Power...
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  • Theoretical introduction to an AC power system

    Theoretical introduction to an AC power system

    Jul , 22 2022
    AC Power Systems have plenty more units, terms, measurements, interesting waveforms and math to describe their behavior. Any formulas presented here are for reference and validation only. The intension of this paperis convey the concept without having to seriously crunch numbers. All the terms and formulas interweave so itis difficult to create a flow of one topic to another without skipping aroun...
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  • What are the soft costs of datacenter?

    What are the soft costs of datacenter?

    Jul , 22 2022
    Data centers can’t afford to go dark. That’s why reliable critical power systems arecentral to their operation. Selecting and maintaining these systems comes at a price, but astronger understanding of “hard” and “soft” costs -- and what can be done to mitigate thelatter -- can protect the bottom line. Hard and soft costs vary from one operation to the next. In general, hard costs refer to the expe...
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  • How to lower the soft cost of Data center

    How to lower the soft cost of Data center

    Aug , 01 2022
    Outages are a major fear for data centers. And for a good reason. Unfortunately, many companies still roll the dice by purchasing critical power systems,assigning someone internally to keep tabs on the equipment, and simply hoping the system comes through when it needs to. (Spoiler: it often doesn’t.) Scarce resources, a lack of skilled personnel, and increased edge computing (and the scattered fa...
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  • Solar battery life time

    Solar battery life time

    Aug , 08 2022
    There are two ways to answer this question and the first is to determine how long a solar battery can power your home. In many cases, a fully charged battery can run your home overnight when your solar panels are not producing energy. To make a more exact calculation, you’ll need to know a few variables, including how much energy your household consumes in a given day, what the capacity and power ...
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  • Power Factor and Harmonic Analysis in Single phase AC to DC converter

    Power Factor and Harmonic Analysis in Single phase AC to DC converter

    Aug , 15 2022
    Most of the power conversion applications consist of an AC to DC conversion stage and this DC output is then used for further stages. An AC to DC converter is an integral part ofmost of the electronic equipment as most of these equipment are DC powered [1]. Generally to convert AC toDC a diode bridge rectifier is used. To reduce the ripple in the output voltage a suitable filter capacitor is used ...
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  • Classification of inverters based on wave type (Pure Sine wave)

    Classification of inverters based on wave type (Pure Sine wave)

    Aug , 29 2022
    Power inverters can be mainly divided into pure sine wave inverters and modified sine wave inverters according to their waveforms. In fact, there is another type - square wave inverter, the earliest inverter, which is rarely seen now. Pure sine wave inverter The pure sine wave inverter outputs true sine wave alternating current without electromagnetic pollution, which is the same or even better th...
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  • How a UPS system works with a Generator

    How a UPS system works with a Generator

    Sep , 19 2022
    As weather extremes and storms increase, power outages are likely to continue to rise. According to the U.S. Energy Information Administration, U.S. customers experienced an average of nearly six hours of power interruptions in 2018. If you have invested in a generator, you’ve prepared for when a storm hits, right? Almost. Even with a generator, you still need a battery backup, also known as an Un...
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  • Major Interconnection Issues for Energy storage solution

    Major Interconnection Issues for Energy storage solution

    Oct , 31 2022
    Major Interconnection Issues Generally, DG-based power systems can operate in independent or stand-alone and grid-connected modes. In fact, in the first mode, the capacity of a DG unit is selected only based on the load requirements. But, in the latter case, this constraint is not determinant. Although the grid-connected operation mode usually is preferred due to the bilateral energy exchanges, th...
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  • Operation mode of integrated ESS application

    Operation mode of integrated ESS application

    Oct , 31 2022
    Operation mode ESS installed at the new energy power generation side can be operated under the following several modes, each independent from each other and not necessarily multifunctional: 1.    Power variation rate limitation. Power variation rate is limited to a certain range relying on real-time measurement of the output power of a wind power plant. The ESS starts charging when the o...
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  • Working principle of a generator side distributed Energy storage system

    Working principle of a generator side distributed Energy storage system

    Oct , 31 2022
    An individual distributed ESS is smaller than an aggregated ESS, because it only handles a single (or a small group) renewable generation unit. Similar to aggregated ESSs, the major function of generator side distributed ESS is to smooth the output of renewables. The distributed ESSs are installed on-site with each renewable generation unit, as illustrated in below figure. A distributed ESS is usu...
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