Capacitor Forum

Capacitor Info & Resources
for the Power Electronics Industry.



2022 PSMA/PELS Capacitor Workshop: How Materials and Environmental Effects Influence Capacitor Performance
Saturday March 19, 2022
George R. Brown Convention Center in Houston, TX
Registration Rates (Early Bird Pricing Deadline:Monday, January 24, 2022)*
  • Member Early/ Regular     $345/ $395
  • Non-Member Early/ Regular  $445/ $495
Previous workshops have sold out, so early registration is encouraged. There will be a $25 surcharge for onsite registration, if seating is available.
Breakfast, lunch and a reception are included in the workshop registration. 

"Influences on Capacitors, How Materials and Environmental Effects Influence Capacitor Performance"
Saturday March 19 2022, Prior to APEC 2022
George R Brown Convention Center, Houston, Texas

Just when one workshop ends, we begin planning for the next based on the feedback received from attendees. In June of this year, we offered our 4th annual Capacitor Workshop. Thanks to the second year of COVID-19 we had to once again transition to a virtual platform in 2021. While we formatted the virtual workshop to be as interactive as possible, a face-to-face onsite workshop will always offer additional opportunities for attendees.

The PSMA Capacitor Committee is delighted to announce our 5th annual pre-APEC Capacitor Workshop sponsored by PSMA and IEEE PELS. We continue our focus on the latest technologies and applications to educate and inform the industry about recent developments in the Capacitor Industry. Each year we are happy to see a growing interest and receive valuable feedback from our attendees which we use when planning our next events. The first workshop in 2018 introduced the basics and now, in 2022, we will put focus on the inner construction of capacitors, the secrets of their materials and how environmental effects will influence performance.

The PSMA Capacitor Workshop Organizing Committee has a clear mission:

The PSMA Capacitor Committee Annual Workshop aligned with APEC has a mission to educate the attendees on capacitor trends, technologies, and innovations. Wherever and whenever applications need energy, Capacitors are at the spotlight, and as energy moves the world it is incumbent for everyone to understand capacitor issues. PSMA's Capacitor Committee is committed to present the best material available to meet the industry's needs.

In 2022, our aim is to deliver value to everyone, newbies and advanced designers of DC-DC converters, frequency drives, inverters, and other power conversation applications alike. The workshop agenda will include topics from a variety of manufacturers, designers, testing and supporting companies.

From the feedback received from attendees, some of the highlights of recent workshops include the joint panel discussion featuring members from the Magnetics and Capacitor Committees as well as the video sequences of real measurements and test setups. Both are scheduled to be included again next year. A live expert roundtable talk is planned along with demonstration stations from magnetics and capacitor specialists demonstrating the behavior of the components in various applications. The preliminary workshop agenda will provide a dive deep into the component structure to show the relation between the material and environmental impact on the capacitor behavior.

Topics for the 2022 workshop include:

  • New Materials & Composites for Capacitors
    • Film
    • Ceramic
    • Aluminum / Polymer
    • Tantalum
    • Super
  • Environmental Influences
    • Temperature
    • Pressure
    • Vibration
  • Qualification of Capacitors, Requirements & Challenges
  • Comparison between simulation and reality

The organizers aim to provide an optimal balance between practical content delivered by leading capacitor manufacturers and content offered by worldwide renowned universities on future capacitor research & development. The agenda includes keynote presentations from recognized experts and technical presentations on ongoing advances in capacitor research and development. The workshop will also feature panel discussions with the presenters to address questions and expand on the materials they presented. During breakfast, lunch and the end-of-day networking period there will be demonstrations of products, technologies, equipment, and measurements to highlight many of the key concepts discussed during the presentations.

The workshop is designed to open new horizons of capacitor technologies, materials and environmental influences to designers and to answer questions engineers have, or will have, when working with different capacitor dielectrics. Please contact Pierre Lohrber ( of the organizing committee if you have any specific areas or issues you would like to see addressed at the workshop.

The latest information on the agenda as well as registration information for the workshop will be available on this page in the coming months.

Design Techniques for the 21st Century – Behind the Scenes, Make Sure You Choose & Use the Correct Capacitor

PSMA and IEEE PELS Sponsor 2021 Capacitors in Power Electronics Workshop in conjunction with APEC 2021

Virtual workshop will be held on June 29-30, 2021

The PSMA Capacitor Committee and IEEE PELS are jointly sponsoring a 2 day virtual workshop titled, "Design Techniques for the 21st Century – Behind the Scenes, Make Sure You Choose & Use the Correct Capacitor." The workshop will be conducted virtually June 29 & 30.

The 2021 Capacitor Workshop is the fourth in the series of workshops scheduled in conjunction with APEC and is being recognized as the leading event for discussing the emerging technologies and applications for capacitors required for next generation power electronics and control systems. Each year the workshop has generated a growing interest and we are using the valuable feedback from past attendees to guide us in planning this year's sessions. Since two-thirds of the passive components used in next generation power and control products are capacitors, we continue our efforts to educate and inform the industry about the latest news and developments of the Capacitor Industry. The 2021 Capacitor Workshop will highlight the evolving capacitor technologies and focus on the characteristics and considerations in the use of capacitors in rapidly evolving market applications.
The 2021 Capacitor Workshop will concentrate on evolving and challenging Automotive and eMobility applications. These include design of power supplies, filter and driver. The workshop will also address the environmental influences to be considered in the choice of capacitor technologies.  Finally, the workshop will address the differences between simulation and reality.
Are you interested in learning more about the high temperature capabilities of EDLC Super-Capacitors, high voltage hybrid Aluminium Polymers?  Have you asked yourself, what is the difference between the result of the simulation you did and the first measurements of your prototypes? How will a capacitors' lifetime differ when environmental conditions change? All of these and many more questions are targeted to be answered during the workshop.
The 2021 Capacitor Workshop will provide an optimal balance between theoretical and practical information, featuring invited keynote presentations from leading industry players as well as presentations on the advances in capacitor research and development together with demonstrations of the latest technologies. In addition, there will be panel sessions of the presenters to address questions and expand on the information presented.  If you have any specific areas or issues that you would like included, please email Pierre Lohrber of the Workshop Organizing Committee at
The early registration fee for the workshop is $225 per participant reducing to $165 for students and members of PSMA and IEEE PELS. On May 1, the registration fee will increase to $255, reduced to $195 for students and members.
Attendees of the "Design Techniques for the 21st Century – Behind the Scenes, Make Sure You Choose & Use the Correct Capacitor" workshop will also be able to attend the "Power Magnetics @ High Frequency" workshop at no additional cost.  You can learn more about the Power Magnetics @ High Frequency Workshop at
Registration includes attendance at the live workshop sessions as well as access to all of the workshop materials and session recordings. 
The workshop's partner, Cornell Dubilier, has generously sponsored three student registration fee waivers that helps to bolster participation of students with the power electronics industry.
We look forward to your participation.

More information, including the detailed workshop agenda, will be available on this webpage in the coming weeks.

Provided by members of the Capacitor Workshop Organizing Team:
Pierre Lohrber, Wurth Electronics
Fred Weber, Future Technology Worldwide

How to Choose and Define Capacitor Usage for Various Applications, Wideband Trends and New Technologies

PSMA and IEEE PELS Sponsored Workshop Webinar Series Tuesdays April 21 – May 5, 2020

The Power Sources Manufacturers Association (PSMA) and the IEEE Power Electronics Society (IEEE PELS) jointly sponsored the virtual capacitor workshop "How to Choose and Define Capacitor Usage for Various Applications, Wideband Trends, and New Technologies". The Capacitor Workshop had been scheduled in parallel with a Magnetics Workshop on the Saturday prior to APEC.

The year 2020 started with a major challenge that hit all of us hard. After months of preparation for the third consecutive PSMA and PELS Capacitor Workshop scheduled on March 14th in New Orleans everything changed dramatically. With a worldwide travel ban and the cancellation of APEC, we had to change the very successful in-person workshop format into a virtual session in just a couple of weeks. Despite the difficulties the Workshop Committee faced, their primary goal was to create the highest possible value to all of the registered attendees which would closely follow the agenda planned for the in-person workshop. Both of the committees, Magnetics and Capacitor agreed, that as an additional bonus, registered attendees would be offered both workshops regardless of which workshop they had originally signed up for.

With the tremendous effort of the Capacitor Committee and the magnificent support of the PSMA staff, the virtual workshop outline solidified and the schedule was published accordingly.  On three consecutive Tuesdays, that started on April 21st the Capacitor Workshop attracted presenters and attendees from around the world. A mixture of technical based presentations from industry professionals and contributions from professors of international renowned universities were well fitted into the three sessions. Supporting demonstrations as well as a live video panel discussion took place to make this virtual workshop a success.

Without exaggeration, the 2020 virtual Capacitor Workshop was a success based on the outstanding efforts of all presenters. With professors and technicians, technical marketing experts and specialists covering a wide range of subjects the value to all attendees was much more than just a replacement of the planned workshop in New Orleans. Brilliant sessions, presented by international speakers from the United States to Europe down to New Zealand had been a promise to all of the participants. Each session concluded with a live and interactive question and answer session and panel discussion that continued until all audience questions were addressed. The feedback was more than just positive. We are pleased to recap that, despite the unique circumstances, the 2020 Capacitor Workshop fulfilled the mission of the workshop organizing committee "to educate the attendees on capacitor trends, technologies, and innovations… to present the best material available to meet the industry's needs." All of the highest praise, and respect is extended to the presenters, the PSMA and IEEE PELS staff and all of the attendees for their contributions. All of the presentations were made available to participants and each session was recorded and is available to all registrants for viewing on demand.

Special credits to all the speakers and organizers for their overwhelming efforts and unstintingly contribution listed below:

  • Pat Wheeler, University of Nottingham, UK; Trends and Challenges in Components for Aircraft Electrification
  • Kevin O'Connor, Caporus Technologies, US, Capacitive Energy Storage in Power Conversion Systems
  • Mark J. Scott, Miami University, US; Failure Modes and Conditional Monitoring Techniques for Capacitors
  • Dong Cao, GE EPISCenter and University of Dayton, US; High Density Converter Capacitor Design Challenges for Data Center and Automotive Application
  • Stephan Menzel, CapXon Europe, Germany; Solid Conductive Polymer and Hybrid Technologies
  • Wilmer Companioni, KEMET Electronics Corporation, US, Ceramic Capacitors for Harsh Environments / Ceramic Capacitors for RF Applications
  • Frank Puhane, Würth Elektronik, Germany; Backup Your Application – Hot Swappable Supercapacitor Backup Solution / DC Link Capacitor and Wireless Power Transfer A Perfect Couple
  • Manuel Gomez, TDK Electronics, US; Innovative Film Capacitor Technologies For Wide Band-Gap Semiconductors
  • Nihal Kularatna, Waikato University, NZ; Benefits of Million Times Larger Capacitance in EDLCs
  • Mike Wens, MinDCet NV, Belgium; Custom Integrated Power Management Solutions
  • Hengzhao Yang, New Mexico Institute of Mining and Technology, US; Peukert's Law for Supercapacitors Physics and Application

The 2020 Capacitor Workshop was different in many ways to prior years. With the feedback provided by attendees following each session, we learned a lot about this format and were able to incorporate many of suggestions received in the later sessions. While nothing will fully replace the face to face dialog and interaction during an in-person workshop, the virtual session is an excellent alternative and/or add-on to increase the value and convenience to attract more attendees all over the world. And the virtual format also allowed individuals to participate in both the Capacitor and Magnetics workshops. With these and additional takeaways from the workshops in 2020 and previous years, we are looking forward to an even brighter future and even more successful workshop 2021 in Phoenix AZ, or perhaps virtually again.

Provided by members of the Capacitor Workshop Organizing Team:

Pierre Lohrber, Wurth Electronics
Fred Weber, Future Technology Worldwide

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