Tutkijatohtori Tommi Kärkkäinen

E-mail: Tommi.Karkkainen@lut.fi
Mobile phone: +358 40 148 8341
ORCID ID: 0000-0003-2794-7491 (Go to ORCID profile)
CV:
Uploaded on: 01/01/2020

Current Organisation
Laboratory of Applied Electronics (Superior organisation: Laboratory of Electrical Engineering)

Research Interest
My research activities focus on the reliability of electronics, especially power electronics. Over the past years I have been studying condition monitoring and defect detection methods for electronic components, namely capacitors and power semiconductor modules.In quality assurance applications, better defect detection means fewer faulty products being shipped to the end user, resulting in increased customer happiness. Condition monitoring methods allow system operators to determine when equipment requires service, maintenance or replacement, resulting in recuced costs associated with component failures. Both defect detection and condition monitoring methods may also completely prevent sudden, unexpected failures. This reduces the risk of a system failure causing an accident, which may even prevent loss of life in some cases.

While doing the above-mentioned research tasks, I have also applied machine learning algorithms. That ML know-how has also been applied to other fields, such as forecasting the production and demand of electricity, which may allow automatised, smart purchase orders and sales orders on the electricity market in the future.

Teaching Experience
I have been running my own courses since 2011, when I was handed two laboratory courses in Electronics. Soon a colleague and I completely transformed the courses from a traditional worksheet-and-report style laboratory course into project based courses. Since then, I have been improving the courses further.

I am heavily involved in developing a new multi-disciplinary mostly-digital educational module, which is to be incorporated in the Master's degree curriculum starting 2020. The module will give the students a good understanding of reliability engineering, the importance of reliability, and the costs of poor reliability.

I am also a member of the electrical engineering curriculum work group since 2017.

Projects as Project Manager


Publications
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A facility for mixed flowing gas testing of and experimentation with power electronic components and systems (2020)
A4 Conference proceedings
Rautio Juuso, Jäppinen Janne, Kärkkäinen Tommi, et al.
European Conference On Power Electronics And Applications
2020 22nd European Conference on Power Electronics and Applications (EPE'20 ECCE Europe)
Improved Modulation for Packed E-Cell Converter (2020)
A4 Conference proceedings
Korhonen Juhamatti, Järvisalo Heikki, Kärkkäinen Tommi, et al.
Proceedings of the Annual Conference of the IEEE Industrial Electronics Society
IECON 2020 The 46th Annual Conference of the IEEE Industrial Electronics Society
Nondestructive Acoustic Testing of Ceramic Capacitors using One-Class Support Vector Machine with Automated Hyperparameter Selection (2020)
A1 Journal article (refereed), original research
Levikari Saku, Kärkkäinen Tommi J., Andersson Caroline, et al.
IEEE Access
IoT Demonstration Platform for Education and Research (2019)
A4 Conference proceedings
Nykyri Mikko, Kuisma Mikko, Kärkkäinen Tommi J., et al.
IEEE International Conference on Industrial Informatics
2019 IEEE 17th International Conference on Industrial Informatics (INDIN)
Localization of dielectric breakdown defects in multilayer ceramic capacitors using 3D X-ray imaging (2019)
A1 Journal article (refereed), original research
Ingman Jonny, Jormanainen Joni, Vulli Aleksi, et al.
Journal of the European Ceramic Society
Predictive Analytics in a Pulp Mill using Factory Automation Data—Hidden Potential (2019)
A4 Conference proceedings
Nykyri Mikko, Kuisma Mikko, Kärkkäinen Tommi J., et al.
IEEE International Conference on Industrial Informatics
2019 IEEE 17th International Conference on Industrial Informatics (INDIN)
Acoustic Detection of Cracks and Delamination in Multilayer Ceramic Capacitors (2018)
A1 Journal article (refereed), original research
Levikari Saku, Kärkkäinen Tommi J., Andersson Caroline, et al.
IEEE Transactions on Industry Applications
Acoustic phenomena in damaged ceramic capacitors (2018)
A1 Journal article (refereed), original research
Levikari Saku, Kärkkäinen Tommi, Andersson Caroline, et al.
IEEE Transactions on Industrial Electronics
Discussion of ”A Comparative Study Between PI and Type-II Compensators for H-Bridge PFC Converter” (2018)
A1 Journal article (refereed), original research
Honkanen Jari, Järvisalo Heikki, Kärkkäinen Tommi, et al.
MLCC Acoustic Data Set (2018)
Other
Levikari Saku, Kärkkäinen Tommi J., Silventoinen Pertti, et al.


Other Research Activities
Bachelor of Science (Technology) (Education and training)
Doctor of Science (Technology) (Education and training)
Master of Science (Technology) (Education and training)



Last updated on 2020-01-01 at 04:04