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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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Effect of input capacitors between UPS and Generator

Jul , 18 2022

Input capacitors used for filtering purpose cause pure apparent power to flow between the supply and the UPS. Such power is referred to as leading or capacitive power. Gensets can manage limited amount of pure leading power, as it interferes with the excitation circuit in the AC generator, leading to voltage oscillations and genset’s shutdown. Safe operating area charts show the allowed gensets’ l...

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Jul , 18 2022

Switch mode power conversion technology dominates nearly every segment of the economy, including demanding aerospace and military power systems that impose requirements more demanding than those imposed by power utilities or industry. Switch mode converters are, for example, successfully hardened against the effects of frequent lightning strikes on aircraft, against the effects of nuclear electrom...

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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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The Importance of Data Centers

Jul , 22 2022

What Is A Data Center? In simplistic terms, a data center is fundamentally a huge computer that stores and processes information. They represent a physical facility that companies use to house their critical applications and data. Their design is based on a network of computing and storage resources that enable the delivery of shared applications and data. Any company or organization that handles ...

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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

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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Why use modular UPS and what are the advantages of modular UPS?

Aug , 01 2022

In recent years, with the rapid development of big data, cloud computing and other technologies, the traditional data center system is also changing rapidly. As a key component of the data center power supply and distribution system, the UPS industry is also changing. Modular UPS technology is becoming more and more mature, and more and more users have or are considering using modular UPS to build...

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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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Single-Phase vs. 3-Phase Power Protection: What You Need to Know（part-1）

Aug , 26 2022

Single-Phase vs 3-Phase Power Protection: What You Need to Know Power is power, right? Well not exactly. It’s true that most of the electrical power we use is alternating current (AC) power generated by utility companies. In fact, AC power is used to deliver the vast majority of the power to our homes and businesses. But AC power can be delivered in many ways, the two most common being single-phas...

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Single-Phase vs. 3-Phase Power Protection: What You Need to Know（part-2）

Aug , 29 2022

What is 3-Phase Power? Unlike single-phase, 3-phase power produces three separate wave currents so there is no temporary absence of power. 3-Phase power delivers power at a steady, constant rate and can reach higher voltage levels up to 480V in the USA. This steady stream of power and ability to handle higher loads makes a 3-phase supply ideal for industrial and commercial operations. More Waves. ...

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Fourier Analysis of input current of Single phase controlled bridge rectifier

Aug , 29 2022

While the use of uncontrolled rectifier circuits remains prominent, for some applications, more control and efficiency is necessary. This can be accomplished through the use of a controlled rectifier circuit in which thyristors connected in a full-bridge configuration adjust the average voltage. Each thyristor has a gate that controls when it turns on. With control circuitry these devices can be o...

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