Thomas Guillod / CV

Location: NH, USA	guillod@otvam.ch
Citizenship: Switzerland	linkedin.com/in/tguillod
Birth year: 1989	github.com/otvam

Work Experience

04.2021 - current

Researcher, Thayer School of Engineering, Dartmouth College, NH, USA

Modeling techniques for high-performance ferrite materials and HF inductors

07.2020 - 06.2021

Independent Engineering Consultant, otvam consulting, Zurich, Switzerland

Magnetic component design, converter optimization, dielectric barrier discharges

11.2018 - 07.2020

Postdoctoral Researcher, ETH Zurich, Switzerland, PES Lab.

Medium-voltage and/or high-frequency magnetics, machine learning, thesis co-supervision

09.2013 - 11.2018

Research & Teaching Assistant, ETH Zurich, Switzerland, PES Lab.

Design and construction of medium voltage DC-DC converters, teaching

04.2013 - 07.2013

Research Assistant, ETH Zurich, Switzerland, High Voltage Lab.

Study of high voltage corona discharges with mixed AC/DC voltages

09.2011 - 12.2011

Intern, Bombardier Transport, Propulsion and Controls, Zurich, Switzerland

Development of traction chains of high-speed trains (transformer and converter)

08.2008 - 09.2009

Teacher Substitute, CIFOM-ET, Le Locle, Switzerland

Mathematics and physics teaching at a technical high school

Education

09.2013 - 11.2018

Doctorate, ETH Zurich, Switzerland, Power Electronic Systems Lab.

Modeling and Design of Medium-Voltage Medium-Frequency Transformers

02.2011 - 03.2013

Master of Science, ETH Zurich, Switzerland, Electrical Engineering and Inf. Tech.

Focus on numerical methods, field theory, and high voltage technology

Overall grade point average: 5.8 out of 6.0 (with distinction)

09.2012 - 03.2013

Master Thesis, ETH Zurich, Switzerland, High Voltage Lab. (with Swissgrid)

Simulation of AC/DC Hybrid Overhead Lines

09.2007 - 02.2011

Bachelor of Science, ETH Zurich, Switzerland, Electrical Engineering and Inf. Tech.

Major: Energy and Power Electronics

Overall grade point average: 5.5 out of 6.0 (very good)

Languages

French: Native speaker
English: Fluent (C1) - Master and PhD studies in English, many publications in English
German: Fluent (C1) - Bachelor studies in German, Intensivkurs Deutsch als Fremdsprache

Skills

Science: Numerical analysis, multi-objective optimization, electromagnetism, converter design,
field simulations, high-frequency measurements, high-voltage testing, machine learning
Computer: Linux, Windows, Word, Excel, Powerpoint, Airtable, Illustrator, LaTeX,
COMSOL, Ansys EM, Altium, KiCad, Inventor, Simulink, SPICE, PLECS
Programming: Python, PyTorch, Pandas, HPC, MATLAB, SQL, Qt, C, DSP, Bash
Open-source: Development and maintenance of scientific open-source tools

Peer-Reviewed Scientific Journal Papers

[TPEL 2024]: S. Wang, H. Li, D. Serrano, T. Guillod, J. Li, C. R. Sullivan, M. Chen, “A Simplified Dc-Bias Injection Method for Characterizing Power Magnetics using a Voltage Mirror Transformer”, IEEE Trans. Power Electron., 2024
[TPEL 2023]: D. Serrano, H. Li, S. Wang, T. Guillod, M. Luo, V. Bansal, N. K. Jha, Y. Chen, C. R. Sullivan, M. Chen, “Why MagNet: Quantifying the Complexity of Modeling Power Magnetic Material Characteristics”, IEEE Trans. Power Electron., 2023
[TPEL 2023]: H. Li, D. Serrano, T. Guillod, S. Wang, E. Dogariu, A. Nadler, M. Luo, V. Bansal, N. K. Jha, Y. Chen, C. R. Sullivan, M. Chen, “How MagNet: Machine Learning Framework for Modeling Power Magnetic Material Characteristics”, IEEE Trans. Power Electron., 2023
[JESTPE 2021]: T. Guillod, P. Czyz, J. W. Kolar, “Geometrical Optimization of Medium-Frequency Air-Core Transformers for DCX Applications”, IEEE J. Emerg. Sel. Topics Power Electron., 2021
[JESTPE 2021]: P. Czyz, T. Guillod, D. Zhang, F. Krismer, R. Färber, J. Huber, C. M. Franck, J. W. Kolar, “Analysis of the Performance Limits of 166 kW / 7 kV Air-Core and Magnetic-Core Medium-Voltage Medium-Frequency Transformers for 1:1-DCX Applications”, IEEE J. Emerg. Sel. Topics Power Electron., 2021
[MDPI 2021]: P. Czyz, P. Papamanolis, F. Trunas Bruguera, T. Guillod, F. Krismer, V. Lazarevic, J. Huber, J. W. Kolar, “Load-Independent Voltage Balancing of Multi-Level Flying Capacitor Converters in Quasi-2-Level Operation”, MDPI Electronics, 2021
[JESTPE 2021]: P. Czyz, T. Guillod, F. Krismer, J. Huber, J. W. Kolar, “Design and Experimental Analysis of 166 kW Medium-Voltage Medium-Frequency Air-Core Transformer for 1:1-DCX Applications”, IEEE J. Emerg. Sel. Topics Power Electron., 2021
[TPEL 2021]: P. Papamanolis, T. Guillod, F. Krismer, J. W. Kolar, “Transient Calorimetric Measurement of Ferrite Core Losses up to 50MHz”, IEEE Trans. Power Electron., 2021
[OJPEL 2020]: P. Papamanolis, T. Guillod, F. Krismer, J. W. Kolar, “Minimum Loss Operation and Optimal Design of High-Frequency Inductors for Defined Core and Litz Wire”, IEEE Open Access Journal of Power Electronics, 2020
[OJPEL 2020]: T. Guillod, P. Papamanolis, J. W. Kolar, “Artificial Neural Network (ANN) Based Fast and Accurate Inductor Modeling and Design”, IEEE Open Access Journal of Power Electronics, 2020
[CPSS 2020]: T. Guillod, J. W. Kolar, “Medium-Frequency Transformer Scaling Laws: Derivation, Verification, and Critical Analysis”, IEEE CPSS Trans. on Power Electron. and App., 2020
[MDPI 2019]: R. Färber, T. Guillod, F. Krismer, J. W. Kolar, C. M. Franck, “Endurance of Polymeric Insulation Foil Exposed to DC-Biased Medium-Frequency Rectangular Pulse Voltage Stress”, MDPI Energies, 2019
[JESTPE 2019]: T. Guillod, R. Färber, F. Krismer, C. M. Franck, J. W. Kolar, “Dielectric Losses in Dry-Type Insulation of Medium-Voltage Power Electronic Converters”, IEEE J. Emerg. Sel. Topics Power Electron., 2019
[TPEL 2019]: T. Guillod, D. Rothmund, J. W. Kolar, “Active Magnetizing Current Splitting ZVS Modulation of a 7kV/400V DC Transformer”, IEEE Trans. Power Electron., 2019
[JESTPE 2019]: D. Rothmund, T. Guillod, D. Bortis, J. W. Kolar, “99% Efficient 10kV SiC-Based 7kV/400V DC-Transformer for Future Data Centers”, IEEE J. Emerg. Sel. Topics Power Electron., 2019.
[JESTPE 2019]: D. Rothmund, T. Guillod, D. Bortis, J. W. Kolar, “99.1% Efficient 10kV SiC-Based Medium Voltage ZVS Bidirectional Single-Phase PFC AC/DC Stage”, IEEE J. Emerg. Sel. Topics Power Electron., 2019.
[ELEN 2018]: T. Guillod, F. Krismer, J. W. Kolar, “Magnetic Equivalent Circuit of MF Transformers: Modeling and Parameter Uncertainties”, Springer / Electrical Engineering, 2018
[ELEN 2017]: R. Bosshard, T. Guillod, J. W. Kolar, “Electromagnetic Field Patterns and Energy Flux of Efficiency Optimal Inductive Power Transfer Systems”, Springer / Electrical Engineering, 2017
[JESTPE 2017]: T. Guillod, F. Krismer, J. W. Kolar, “Protection of MV Converters in the Grid: The Case of MV/LV Solid-State Transformers”, IEEE J. Emerg. Sel. Topics Power Electron., 2017
[TPWRD 2014]: T. Guillod, M. Pfeiffer, C. M. Franck, “Improved Coupled Ion-Flow Field Calculation Method for AC/DC Hybrid Overhead Power Lines”, IEEE Trans. Power Del., 2014
[JPIER 2013]: T. Guillod, F. Kehl, C. Hafner, “FEM-based Method for the Simulation of Dielectric Waveguide Grating Biosensors”, Progress in Electromagnetics Research, 2013
[TPS 2013]: D. Gerber, T. Guillod, J. Biela R. Leutwyler, “Gate Unit with Improved Short Circuit Detection and Turn-Off Capability for 4.5kV Press-Pack IGBTs Operated at 4kA Pulse Current”, IEEE Trans. Plasma Sci., 2013

Peer-reviewed International Conference Proceedings

[APEC 2024]: T. Guillod, W. V. R. Roberts, C. R. Sullivan, “Characterization and Impact of Large-Signal Dielectric Properties in MnZn Ferrites”, IEEE APEC, USA, 2024
[APEC 2024]: E. Deleu, H. Li, J. Li, W. Lee, T. Guillod, C. R. Sullivan, S. Wang, M. Chen, “Multi-Material Power Magnetics Modeling with a Modular and Scalable Machine Learning Framework”, IEEE APEC, USA, 2024
[ICEMS 2023]: T. Ohno, S. Miric, T. Guillod, F. Krismer, J. Huber, J. W. Kolar, “New Triple-Output Quad-Active-Bridge DC/DC Converter Employing a Four-Leg Inverter Input Stage”, IEEE ICEMS, China, 2023
[APEC 2023]: T. Guillod, J. Lee, H. Li, S. Wang, M. Chen, C. R. Sullivan, “Calculation of Ferrite Core Losses with Arbitrary Waveforms Using the Composite Waveform Hypothesis”, IEEE APEC, USA, 2023
[APEC 2023]: H. Li, D. Serrano, S. Wang, T. Guillod, M. Luo, M. Chen, “Predicting the B-H Loops of Power Magnetics with Transformer-Based Encoder-Projector-Decoder Neural Network Architecture”, IEEE APEC, USA, 2023
[APEC 2023]: S. Wang, D. Serrano, H. Li, A. Lin, T. Guillod, M. Luo, C. R. Sullivan, M. Chen, “A Simplified DC-Bias Injection Method with Mirror Transformer for Magnetic Material Characterization”, IEEE APEC, USA, 2023
[COMPEL 2022]: D. Serrano, H. Li, T. Guillod, S. Wang, M. Luo, C. R. Sullivan, M. Chen, “Neural Network as Datasheet: Modeling B-H Loops of Power Magnetics with Sequence-to-Sequence LSTM Encoder-Decoder Architecture”, IEEE COMPEL, Israel, 2022
[APEC 2022]: H. Li, D. Serrano, T. Guillod, E. Dogariu, A. B. Nadler, S. Wang, M. Luo, V. Bansal, Y. Chen, C. R. Sullivan, M. Chen, “MagNet: an Open-Source Database for Data-Driven Magnetic Core Loss Modeling”, IEEE APEC, USA, 2022
[CIPS 2020]: M. Kasper, L. Peluso, G. Deboy, G. Knabben, T. Guillod, J. W. Kolar, “Ultra-high Power Density Server Supplies Employing GaN Power Semiconductors and PCB-Integrated Magnetics”, IEEE CIPS, Germany, 2020
[APEC 2020]: P. Papamanolis, T. Guillod, F. Krismer, J. W. Kolar, “Transient Calorimetric Measurement of Ferrite Core Losses”, IEEE APEC, USA, 2020
[ECCE Asia 2019]: P. Czyz, P. Papamanolis, T. Guillod, F. Krismer, J. W. Kolar, “New 40kV/300kVA Quasi-2-Level Operated 5-Level Flying Capacitor SiC”Super-Switch" IPM", IEEE ECCE Asia, South Korea, 2018
[ECCE Asia 2018]: P. Czyz, T. Guillod, F. Krismer, J. W. Kolar, “Exploration of the Design and Performance Space of a High Frequency 166kW/10kV SiC Solid-State Air-Core Transformer”, IEEE ECCE Asia, Japan, 2018
[COMPEL 2017]: T. Guillod, J. Huber, F. Krismer, J. W. Kolar, “Litz Wire Losses: Effects of Twisting Imperfections”, IEEE COMPEL, USA, 2017
[APEC 2017]: T. Guillod, F. Krismer, J. W. Kolar, “Electrical Shielding of MV/MF Transformers Subjected to High dv/dt PWM Voltages”, IEEE APEC, USA, 2017
[ECCE USA 2016]: T. Guillod, R. Färber, F. Krismer, C. M. Franck, J. W. Kolar, “Computation and Analysis of Dielectric Losses in MV Power Electronic Converter Insulation”, IEEE ECCE, USA, 2016
[IECON 2015]: T. Guillod, F. Krismer, R. Färber, C. M. Franck, J. W. Kolar, “Protection of MV/LV Solid-State Transformers in the Distribution Grid”, IEEE IECON, Japan, 2015
[APEC 2015]: D. Rothmund, G. Ortiz, T. Guillod, J. W. Kolar, “10kV SiC-Based Isolated DC-DC Converter for Medium-Voltage-Connected SSTs”, IEEE APEC, USA, 2015
[ECCE USA 2014]: T. Guillod, J. Huber, G. Ortiz, A. De, C. M. Franck, J. W. Kolar, “Characterization of the Voltage and Electric Field Stresses in Multi-Cell Solid-State Transformers”, IEEE ECCE, USA, 2014
[CIPS 2012]: T. Guillod, D. Gerber, J. Biela, A. Müsing, “Design of a PCB Rogowski Coil Based on the PEEC Method”, IEEE CIPS, Germany, 2012
[PPC 2011]: D. Gerber, T. Guillod, J. Biela, “IGBT Gate-Drive with PCB Rogowski Coil for Improved Short Circuit Detection and Current Turn-Off Capability”, IEEE PPC, USA, 2011

Further Scientific Contributions

[Workshop 2024]: C. R. Sullivan, T. Guillod, “Thermal, Scaling and Dielectric Issues in Magnetics Design”, PSMA Workshop, High Frequency Power Magnetics, USA, 2024
[Talk 2023]: T. Guillod, “Using (Simple) Neural Networks to boost Power Magnetics Models”, Mag & Mad Conference, Spain, 2023
[Talk 2023]: T. Guillod, “MagNet Challenge Webinar: Equation-based Baseline Models”, IEEE PELS MagNet Challenge Webinar, 2023
[Workshop 2022]: T. Guillod, C. R. Sullivan, “Data-Driven Core-Loss Modeling”, ECPE Magnetic Components Workshop, France, 2022
[Workshop 2022]: C. R. Sullivan, T. Guillod, “Magnetic Core Geometry Influences on Component Performance”, PSMA Workshop, High Frequency Power Magnetics, USA, 2022
[Workshop 2021]: T. Guillod, J. W. Kolar, “ANN Powered Models for Magnetic Components”, ECPE Online Workshop, Steps towards Design Automation & Artificial Intelligence in Power Electronics, 2021
[Talk 2021]: J. W. Kolar, J. Huber, T. Guillod, “Fundamentals and Application Oriented Evaluation of Solid State Transformer Concepts”, PSMA Webinar, Roadmap Presentation, 2021
[Talk 2020]: P. Czyz, T. Guillod, F. Krismer, J.W. Kolar, “Experimental Analysis of a 166kW Medium Voltage/Frequency Air Core Transformer for 1:1 DCX Applications”, IEEC ECCE, USA, 2020
[Talk 2020]: T. Guillod, J. W. Kolar, “From Brute Force Grid Search to Artificial Intelligence: Which Algorithms for Magnetics Optimization?”, APEC PSMA Industry Session, USA, 2020
[Invention 2020]: P. Czyz, P. Papamanolis, V. Lazarevic, T. Guillod, F. Krismer, J.W. Kolar, “Voltage Source Converter Configured to Transition Between at Least Two Voltage Levels”, Swedish patent application, 2020
[Workshop 2020]: P. Papamanolis, T. Guillod, F. Krismer, J. W. Kolar, “Minimum Loss Operation of High Frequency Inductors”, ECPE Magnetic Components Workshop, France, 2020
[Article 2019]: D. Rothmund, T. Guillod, D. Bortis, J. W. Kolar, “Use Electrical Energy More Efficiently with New Solid-State Transformers”, Swiss National Science Foundation NRP 70/71, 2019
[Talk 2019]: T. Guillod, J. W. Kolar, “Handling Design Space Diversity of Power Electronics Multi-Objective Optimization”, IEEE Design Automation for Power Electronics, Italy, 2019
[Talk 2019]: T. Guillod, D. Rothmund, J. W. Kolar, “10kV SiC MOSFETs for Solid-State Transformers: Opportunities and Challenges”, X-Power Electronics Conference, China, 2019
[Workshop 2019]: T. Guillod, J. W. Kolar, “Dielectric Losses in the Insulation of Dry-Type Medium-Frequency Transformers”, ECPE Solid-State Transformer Workshop, Switzerland, 2019
[PhD 2018]: T. Guillod, “Modeling and Design of Medium-Frequency Transformers for Future Medium-Voltage Power Electronics Interfaces”, PhD Thesis, ETH Zurich, 2018
[Talk 2018]: D. Rothmund, T. Guillod, D. Bortis, J. W. Kolar, “Design and Experimental Analysis of a 10kV SiC MOSFET Based 50kHz Soft-Switching Single-Phase 3.8kV AC/400V DC Solid-State Transformer”, IEEC ECCE, USA, 2018
[Workshop 2017]: T. Guillod, F. Krismer, J. W. Kolar, “Dielectric Losses: MV/MF Converter Insulation”, SCCER FURIES Technical Workshop, Switzerland, 2017
[Talk 2016]: T. Guillod, J. W. Kolar, “Medium-Frequency Transformers for Smart Grid Applications: Challenges and Opportunities”, SCCER-FURIES Annual Conference, Switzerland, 2016
[Poster 2015]: T. Guillod, R. Färber, C. M. Franck, J. W. Kolar, “Effects of Mixed-Frequency Voltage Stress on Dry-Type Insulation Systems”, SCCER-FURIES Annual Conference, Switzerland, 2015
[Article 2013]: M. Pfeiffer, T. Guillod, M. Weber, C. Franck, “Erhöhung der Übertragungskapazität durch Hybride AC/DC-Freileitungen, Potenzial und Machbarkeit in der Schweiz”, Bulletin SEV/AES Electrosuisse, 2013
[Poster 2013]: T. Guillod, “Simulation von AC/DC hybriden Freileitungen”, ETG-Innovationspreis, 2013
[Master 2013]: T. Guillod, “Simulation of AC/DC Hybrid Overhead Lines”, Master Thesis, ETH Zurich, 2013
[Talk 2012]: F. Kehl, T. Guillod, “Combined FEM and Analytical Method for the Simulation and Optimization of Planar Dielectric Waveguide Grating Biosensors”, Workshop on Numerical Methods for Optical Nano Structures, Switzerland, 2012

Awards & Grants

IEEE TPEL 2023: IEEE TPEL Transactions First Prize Award
IUCRC PMIC 2023: Power Management Integration Center / NSF IUCRC / Accepted Project
SNSF PostDoc 2021: Swiss National Science Foundation Mobility Fellowship
IEEE JESTPE 2021: IEEE JESTPE Transactions Second Prize Award
IEEE JESTPE 2020: IEEE JESTPE Transactions First Prize Award
IEEE ECCE 2018: Best Paper Award
IEEE ECCE 2016: Travel Grant Award
IEEE IECON 2015: Best Presentation Recognition
IEEE IECON 2015: Travel Grant Award
IEEE ECCE 2014: Best Overall Oral Presentation
IEEE ECCE 2014: Best Overall Student Paper
Electrosuisse 2013: ETG-Innovationspreis Finalist (Electrosuisse)