• Latest
  • Trending
  • All
  • Capacitors
  • Resistors
  • Inductors
  • Filters
  • Fuses
  • Non-linear Passives
  • Applications
  • Integrated Passives
  • Oscillators
  • Passive Sensors
  • New Technologies
  • Aerospace & Defence
  • Automotive
  • Industrial
  • Market & Supply Chain
  • Medical
  • RF & Microwave
  • Telecommunication

EPCI Interview on Supercapacitors evaluation & modelling with prof. J.Sikula, Technical University of Brno

24.5.2022

Designing with High Voltage Resistors: 10 Top Tips for Success

29.3.2023

API Delevan Introduces 0402 and 0603 Small High Reliability Space SMD Inductors

29.3.2023

KYOCERA AVX Antenna Simulation Models are now Available in Ansys Simulation Software

28.3.2023

Optimization of 500W LLC Transformer – Case Study

28.3.2023

Flex Suppressor Explained and its Applications

24.3.2023

Exploring the Benefits of High-Performance MLCC Capacitors for Aerospace and Defense

23.3.2023
  • Home
  • Privacy Policy
  • EPCI Membership & Advertisement
  • About
No Result
View All Result
NEWSLETTER
Passive Components Blog
  • Home
  • NewsFilter
    • All
    • Aerospace & Defence
    • Antenna
    • Applications
    • Automotive
    • Capacitors
    • Circuit Protection Devices
    • Filters
    • Fuses
    • Inductors
    • Industrial
    • Integrated Passives
    • Market & Supply Chain
    • Medical
    • New Materials & Supply
    • New Technologies
    • Non-linear Passives
    • Oscillators
    • Passive Sensors
    • Resistors
    • RF & Microwave
    • Telecommunication

    Designing with High Voltage Resistors: 10 Top Tips for Success

    API Delevan Introduces 0402 and 0603 Small High Reliability Space SMD Inductors

    KYOCERA AVX Antenna Simulation Models are now Available in Ansys Simulation Software

    Optimization of 500W LLC Transformer – Case Study

    Flex Suppressor Explained and its Applications

    Exploring the Benefits of High-Performance MLCC Capacitors for Aerospace and Defense

    Murata Establishes Joint Venture Company to Produce MLCC Raw Materials

    Examining the Influence of ESR and Ripple Current on Selecting the Suitable Capacitor

    SABIC Validates its 150°C Film Foil to Enable Adoption of Film Capacitors in SIC Power Modules

    Trending Tags

    • Ripple Current
    • RF
    • Leakage Current
    • Tantalum vs Ceramic
    • Snubber
    • Low ESR
    • Feedthrough
    • Derating
    • Dielectric Constant
    • New Products
    • Market Reports
  • VideoFilter
    • All
    • Antenna videos
    • Capacitor videos
    • Filter videos
    • Fuse videos
    • Inductor videos
    • Non-linear passives videos
    • Oscillator videos
    • Passive sensors videos
    • Resistor videos
    • Sensors

    Investigating Modeling Techniques of Class II Ceramic Capacitors Losses for High Voltage and Current Applications

    Understanding Basics of Current Sense Resistors

    What Decoupling Capacitor Value To Use And Where To Place Them

    How to Measure Rated Current on Power Inductors

    LTspice Simulation of a Spark-Gap Circuit Protection Surge Arrester

    Approximate Inductor Design Using Two Alternative Cores

    1kW Phase Shift Full Bridge Converter Design and Simulation

    Multiphase Buck Trans-Inductor Voltage Regulator (TLVR) Explained

    Smart Power Distribution Unit Architecture and Inductor Losses

    Trending Tags

    • Capacitors explained
    • Inductors explained
    • Resistors explained
    • Filters explained
    • Application Video Guidelines
    • EMC
    • New Products
    • Ripple Current
    • Simulation
    • Tantalum vs Ceramic
  • Knowledge Blog
  • Suppliers
    • Preferred Suppliers
    • Who is Who
  • Events
  • Home
  • NewsFilter
    • All
    • Aerospace & Defence
    • Antenna
    • Applications
    • Automotive
    • Capacitors
    • Circuit Protection Devices
    • Filters
    • Fuses
    • Inductors
    • Industrial
    • Integrated Passives
    • Market & Supply Chain
    • Medical
    • New Materials & Supply
    • New Technologies
    • Non-linear Passives
    • Oscillators
    • Passive Sensors
    • Resistors
    • RF & Microwave
    • Telecommunication

    Designing with High Voltage Resistors: 10 Top Tips for Success

    API Delevan Introduces 0402 and 0603 Small High Reliability Space SMD Inductors

    KYOCERA AVX Antenna Simulation Models are now Available in Ansys Simulation Software

    Optimization of 500W LLC Transformer – Case Study

    Flex Suppressor Explained and its Applications

    Exploring the Benefits of High-Performance MLCC Capacitors for Aerospace and Defense

    Murata Establishes Joint Venture Company to Produce MLCC Raw Materials

    Examining the Influence of ESR and Ripple Current on Selecting the Suitable Capacitor

    SABIC Validates its 150°C Film Foil to Enable Adoption of Film Capacitors in SIC Power Modules

    Trending Tags

    • Ripple Current
    • RF
    • Leakage Current
    • Tantalum vs Ceramic
    • Snubber
    • Low ESR
    • Feedthrough
    • Derating
    • Dielectric Constant
    • New Products
    • Market Reports
  • VideoFilter
    • All
    • Antenna videos
    • Capacitor videos
    • Filter videos
    • Fuse videos
    • Inductor videos
    • Non-linear passives videos
    • Oscillator videos
    • Passive sensors videos
    • Resistor videos
    • Sensors

    Investigating Modeling Techniques of Class II Ceramic Capacitors Losses for High Voltage and Current Applications

    Understanding Basics of Current Sense Resistors

    What Decoupling Capacitor Value To Use And Where To Place Them

    How to Measure Rated Current on Power Inductors

    LTspice Simulation of a Spark-Gap Circuit Protection Surge Arrester

    Approximate Inductor Design Using Two Alternative Cores

    1kW Phase Shift Full Bridge Converter Design and Simulation

    Multiphase Buck Trans-Inductor Voltage Regulator (TLVR) Explained

    Smart Power Distribution Unit Architecture and Inductor Losses

    Trending Tags

    • Capacitors explained
    • Inductors explained
    • Resistors explained
    • Filters explained
    • Application Video Guidelines
    • EMC
    • New Products
    • Ripple Current
    • Simulation
    • Tantalum vs Ceramic
  • Knowledge Blog
  • Suppliers
    • Preferred Suppliers
    • Who is Who
  • Events
No Result
View All Result
Passive Components Blog
No Result
View All Result

EPCI Interview on Supercapacitors evaluation & modelling with prof. J.Sikula, Technical University of Brno

24.5.2022
Reading Time: 4 mins read
0 0
0
SHARES
158
VIEWS

EPCI: I visited this month prof. Josef Sikula from Czech Noise Research Laboratory by Technical University of Brno, Czech Republic. I know Mr. Sikula for many years, back in 90th we were actively speaking at CARTS conferences in USA and Europe about passive components, especially about tantalum capacitors. He was one of the first to introduce concept of MIS structure on tantalum capacitors to explain conductivity mechanisms and behavior at various operating conditions. Today, in his 83, he is still partially working at University, actively travelling and speaking at conferences worldwide. So I was wondering what is his current point of interest and new papers under preparation on passive components that we can expect soon.

1] EPCI: Mr. Professor can you please briefly introduce yourselves and your activities related to passive components?

RelatedPosts

Designing with High Voltage Resistors: 10 Top Tips for Success

API Delevan Introduces 0402 and 0603 Small High Reliability Space SMD Inductors

KYOCERA AVX Antenna Simulation Models are now Available in Ansys Simulation Software

Prof. Sikula: I spent more than 50years on noise research and use of the noise as the characterization and prediction of reliability of electronic components. At the beginning I was working mainly on enhancement of transistor and active technologies, nevertheless 30 years ago I turned to passive components – resistors and capacitors. The past five years I was occupied mainly by evaluation, characterization and modelling of supercapacitors.

2] EPCI: Supercapacitors are indeed a hot topic. There are continuous releases of higher and higher CV values and new attractive capabilities for automotive EV, space, high power energy storage, industrial etc. Can you please share what was scope of your work and some of your findings with us?

Prof. Sikula: We were recently involved in ESA project for evaluation of supercapacitors for potential space use. Our part of the work was simulation and modelling of supercapacitors based on evaluation of capacitors made by more manufacturers on the market. High fidelity evaluation and modelling with low error is possible only based on deeper understanding of the physical processes inside the structure, so the project itself was a great contributor our overall knowledge about the supercapacitors’ basic mechanisms. Mass volume commercial manufacturers are not interested in basic research of internal processes of their products when their products are passing the customer specification limits. However space, and some industrial applications need to know what is beyond 5000 hours life time or what is expected during overstressing of some parameters, thus deep physical modelling is of key importance here. We completed the modelling on tantalum capacitors, currently working on MLCC structures and finalizing supercapacitors. The MLCC structures are much more complicated with its strong capacitance dependency to DC, AC voltage, temperature etc. but we have succeed electrical modelling with accuracy better than 10% on most of the parts.

3] EPCI: Can we return to the supercapacitors in more details, what type of evaluation and characterization you performed on the tested capacitors?

Prof. Sikula: Apart of basic electrical characterization according to the manufacturer datasheets, we paid main attention to the charge/discharge supercapacitors’ behavior under various load conditions. There are certain features that are not widely known by designers, but it may be important as the design parameter, for example: decrease of capacitance value with number of charge/discharge cycles under different derating and temperature operating conditions.

4] EPCI: I noticed, based on the results that you are just showing me, that we can estimate dielectric absorption value of supercapacitors now that I have not found yet as publicly known parameter, just as a note as “unknown, but highest compare to the other capacitor technologies”.

Prof. Sikula: Yes, the dielectric absorption of supercapacitors can be as high as 30 to 40% … which practically means that the energy from supercapacitors can be released much slowly compare to the other capacitor technologies. For example if you have a 10 F capacitor, the “quick” energy that you have available is closer to 7 F capacitance. The rest 3 F will come slowly with time. This might be the first “disappointing” experience of circuit designers about supercapacitor technology.

5] EPCI: With the current expansion of supercapacitor technology, can you estimate if / when energy densities of this technology will reach or will get more closer to batteries?

Prof. Sikula: I can’t predict it with such strong statement, the battery technologies are moving very rapidly as well as the supercapacitors, so the real siutation is more like “shooting to moving target”. What is clear is that there is still a very strong potential for supercapacitors to increase its Capacitance value and volumetric efficiency. One of about ten charge carriers is currently creating the potential / capacitance value only in accordance to our findings, thus with further optimisation of electrolytes and technologies we can expect continuous increase of capacitance volumetric efficiency of supercapacitors and extended use in wider range of applications.

6] EPCI: Thank you Prof. Sikula for your time and your willingness to share some of your findings with us. When will be possible to read your official results in some form of technical document?

Prof. Sikula: I am presenting results of the ESA project on supercapacitor evaluation study for space use at the next ESA Space Passive Component Days in October 2016 at ESTEC, The Netherlands (http://esaconferencebureau.com/SPCD2016 or link here) where myself or someone from my team will be available to discuss further questions.

about prof. Ing. RNDr. Josef Šikula, DrSc.

Sikula Josef
Prof. Josef Sikula received his M.Sc. degree in Electronics from the Technical University of Prague in 1957, and his M.Sc. degree in Physics from Komensky University, Bratislava in 1960. He received his Ph.D. degree in Semiconductor Physics in 1965 and DSc in Applied Physics in 1980. He is currently Professor of Applied Physics at Brno University of Technology.  In 1970 he founded a group dealing with studies of noise and fluctuation phenomena in solids. His main interests are noise spectroscopy, non-destructive testing, and defect engineering on electronic components mainly resistors and capacitors.

Related Posts

Aerospace & Defence

Exploring the Benefits of High-Performance MLCC Capacitors for Aerospace and Defense

23.3.2023
56
Market & Supply Chain

Murata Establishes Joint Venture Company to Produce MLCC Raw Materials

23.3.2023
89
Capacitors

Examining the Influence of ESR and Ripple Current on Selecting the Suitable Capacitor

21.3.2023
186

Upcoming Events

Mar 29
15:00 - 16:00 EEST

Supercapacitors vs. Batteries in Engine Starting

Mar 29
17:00 - 18:00 CEST

Practical LLC Transformer Design Methodology

Apr 3
April 3 @ 12:00 - April 4 @ 14:00 CEST

Microelectronic Packaging Failure Modes and Analysis

View Calendar

Popular Posts

  • Ripple Current and its Effects on the Performance of Capacitors

    3 shares
    Share 3 Tweet 0
  • What is a Dielectric Constant of Plastic Materials ?

    4 shares
    Share 4 Tweet 0
  • Capacitor Selection for Coupling and Decoupling Applications

    28 shares
    Share 28 Tweet 0
  • MLCC and Ceramic Capacitors

    0 shares
    Share 0 Tweet 0
  • How to Choose the Right Inductor for DC-DC Buck Applications

    0 shares
    Share 0 Tweet 0
  • Leakage Current Characteristics of Capacitors

    0 shares
    Share 0 Tweet 0
  • Why Low ESR Matters in Capacitor Design

    0 shares
    Share 0 Tweet 0
  • Understanding High-Precision Resistor Temperature Coefficient of Resistance

    0 shares
    Share 0 Tweet 0

Newsletter Subscription

 

PCNS Call for Papers !

Archive

2022
2021
2020
2019
2018
2017

Symposium

Passive Components Networking Symposium

Passives e-Learning

Knowledge Blog

  • Home
  • Privacy Policy
  • EPCI Membership & Advertisement
  • About

© EPCI - Premium Passive Components Educational and Information Site

No Result
View All Result
  • Home
  • News
  • Video
  • Knowledge Blog
  • Preferred Suppliers
  • Events

© EPCI - Premium Passive Components Educational and Information Site

Welcome Back!

Login to your account below

Forgotten Password?

Retrieve your password

Please enter your username or email address to reset your password.

Log In
This website uses cookies. By continuing to use this website you are giving consent to cookies being used. Visit our Privacy and Cookie Policy.