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Theoretical introduction to Switch mode converters

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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Advantages of Modular UPS

Aug , 01 2022

Generally speaking, the advertised modular UPS has the following advantages: Easy to use, easy to install and expand High availability and easy maintenance Expansion on demand, saving initial investment Module hibernation improves efficiency and saves operating costs Intelligent network managem...

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Do Ferro resonant chargers still have a place in battery charging?

Aug , 15 2022

One of the larger battery/charger companies selling chargers in the USA have announced that they are no longer manufacturing Ferro resonant chargers and have set 7/31/15 as the last date to accept orders.Is there something wrong with Ferro resonant charging that should make all charger companies follow that lead? Let’s consider Ferro resonant technology. The purpose of a Ferro resonant transformer...

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Power Factor and Harmonic Analysis in PWM 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 of most of the electronic equipment as most of these equipment are DC powered [1]. Generally to convert AC to DC a diode bridge rectifier is used. To reduce the ripple in the output voltage a suitable filter capacitor is use...

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Battery charging technology over view- Ferro resonant chargers

Aug , 15 2022

Battery charging is a complex electrochemical process, in which the discharged electric energy must be replenished from the electric network. The quality of the charging process is critical to the health and longevity of batteries. As a result, battery chargers play a key role in the life andperformance of today’s industrial batteries. A battery charger is an electrical/electronic device that conv...

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Battery charging technology over view- SCR chargers

Aug , 22 2022

Battery charging is a complex electrochemical process, in which the discharged electric energy must be replenished from the electric network. The quality of the charging process is critical tothe health and longevity of batteries. As a result, battery chargers play a key role in the life and performance of today’s industrial batteries. A battery charger is an electrical/electronic device that conv...

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What are the installation steps for the voltage stabilizer?

Aug , 22 2022

The voltage stabilizer is composed of voltage stabilizer and constant voltage, control circuit, and servo motor. When the input voltage or load changes, the control circuit performs sampling, comparison and amplification, and then drives the servo motor to rotate, so that the position of the carbon brush of the voltage regulator changes, and the coil turns ratio is automatically adjusted to mainta...

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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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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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SEI film formation mechanism

Sep , 05 2022

During the formation of the SEI film, various reduction reactions are carried out by the electrolyte solvent, lithium salt, additives, and trace air impurities. This series of reactions is not only affected by the inherent properties of substances such as reduction potential, reduction activation energy, and exchange current density, but also by other factors such as temperature, electrolyte salt ...

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Overview of the lithium battery formation process

Sep , 05 2022

Lithium- ion battery formation process includes constant current, constant voltage and intelligent charging. The polarization phenomenon of constant current charging is serious, and its initial current is low, the current at the end of charging is high, the charging time is long, the energy waste is serious, and the battery life will be reduced. During constant voltage charging, the current is rel...

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