Balancing – Theoretical Background

Posted by doEEEt Media Group
On February 9, 2023
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A capacitor may be modeled by a parallel connection of an R-C unit and a insulation resistance. For the moment we neglect the insulation resistance and consider a series stack of two capacitors with capacities C1 and C2

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Supercapacitors Balancing Strategies

Posted by doEEEt Media Group
On February 9, 2023
0

Active balancing involves the utilization of actively controlled switches or amplifying systems. [3, 8] Passive balancing utilizes shunts or self-regulating resistors to lower the effect of overvoltage. Compared to passive balancing, active balancing may be fast, in some cases energy efficient but also relatively cost intensive

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Supercapacitors voltage measurements

Posted by doEEEt Media Group
On February 9, 2023
0

The voltage measurements were performed with a self-developed measurement setup, based on the integrated circuit CY8CKIT-059 from PSoC. The data acquisition was utilized with an Excel-script. The measurement setup including the programming of the script were developed by Jon-Izkue Rodriguez from WE eiSos.

EEE Components, PASSIVES

What is the Best Supercapacitor Balancing Method ?

Posted by doEEEt Media Group
On February 9, 2023
0

Balancing with the resistor is the slowest balancing strategy but yields the advantage of low power consumption, low cost, and easy circuit design. Depending on the resistors, it might be suitable for long-term standalone applications. The balancing speed of the Zener diode is moderate. It yields the advantage of relatively low power consumption, low cost, and easy circuit design. The relatively low power dissipation makes it suitable for long term standalone applications.

EEE Components, PASSIVES

Webinar: A real life Supercapacitor backup solution

Posted by doEEEt Media Group
On February 9, 2023
0

If the application's power supply breaks down, this is not a pleasant situation. Würth Elektronik eiSos built up a demonstration showing a hot-swappable backup solution with a size of 10 cm x 18.5 cm (3.94 inch x 7.3 inches). The input voltage is 24V, and the backup output voltage is 12 V for a normal industrial power rail application. The available output power is 30 W (12 V @ 2.5 A). We also talk about the classification of Supercapacitors, the model parameters and performance, and the charge-, discharge, and frequency behavior.

EEE Components, PASSIVES

Snap-In Supercapacitors

Posted by doEEEt Media Group
On January 13, 2023
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The WCAP-SISC EDLC snap-in supercapacitors are available with capacitance values of 100 F and 350 F – this is the perfect solution for applications with high power and high energy requirements, such as UPS or energy storage solutions.

EEE Components, PASSIVES

Double Stage 3 Phase Mains Filter

Posted by doEEEt Media Group
On December 28, 2022
0

The double-stage filter family is therefore also appropriate for applications with particularly high EMC emissions, as is frequently encountered in industry. Typical applications include machines and systems for automatic production, motor drives and industrial plant machinery. These powerful filters are also the first choice for modern frequency inverters for motor control.

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Glass, MICA, Air and Vacuum Capacitors

Posted by doEEEt Media Group
On December 16, 2022
0

These electrolytic capacitors have high instability and poor tolerances, and their performance deteriorates when they are subjected to high leakage current or high temperatures. Plastic film and paper capacitors are usually used in circuits that demand capacitors with good aging performance, high stability, and high current-carrying capability. For high-frequency applications, ceramic capacitors are a good option. However, these capacitors have poor aging performance.

EEE Components, PASSIVES

Capacitor Symbols

Posted by doEEEt Media Group
On December 15, 2022
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This article shows some common and also not so known capacitor symbols with brief description. Capacitor Symbols

EEE Components, PASSIVES

Capacitance and its Calculation, Dielectric, Dipoles and Dielectric Absorption

Posted by doEEEt Media Group
On December 15, 2022
0

This article explains the basic key parameter of capacitors – capacitance – and its relations: dielectric material constant / permittivity, capacitance calculations, series and parallel connection, E tolerance fields, and how it is formed by dipoles / dielectric absorption.

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