presentations

AC Core Loss

Thermal Management of Power Magnetics

Technical Session - AC Core Loss

• Keynote: High Frequency Effects in the Core (Gerald Hurley, National University of Ireland, Galway)
• Magnetics Core Dimensional Effects - Flux Propagation in Ferrites (Marcin Kacki, SMA Magnetics)
• Series-coupling Characterization of High-Leakage Magnetic Components (John Hayes, University College Cork)
• Lumped Model to Explain and Approximate Dimensional Effects in Ferrite Cores (Charles Sullivan, Dartmouth)
• NETL’s Core Loss Testing and Advanced Data Sheets for Soft Magnetic Materials (Seung Ryul Moon, National Energy Technology Laboratory)

Technology Demonstrations Session

• Development of Distributed Gap Powder Core Materials to Address Higher Frequency Applications 1 MHz at High Operating Temperature Ranges (Chris Oliver, Micrometals)
• Emerging Magnetic Materials and Magnetic Structures (John Lynch, Fair-Rite)
• Fundamentals of L, R, Z Measurments (Jenna Pollock, Independent)
• Materials Magic Nanocrystalline, Amorphous and Powdered Amorphous Cores (Ken’ichi Chata’ni, TOKIN, A Kemet Company)
• Multiscale Nanolaminated Metallic Cores for High Frequency Magnetics (Mark Allen, University of Pennsylvania)
• Pulse Testing of Magnetic Cores and Inductors (JC Sun, Bs&T)
• Soft Magnetic Metal-flake Composite Material Suitable for High Frequency Power Modules (Ken’ichi Chata’ni, TOKIN, A Kemet Company)
• Strain Annealed Metal Amorphous Nanocomposite Soft Magnetic Materials (Seung Ryul Moon, National Energy Technology Laboratory)

Technical Session - Thermal Management of Power Magnetics

• Keynote: Recent Trends in Design and Techniques to Influence Thermal Performance of Magnetic Components (Peter Wilson, University of Bath)
• Thermal Issues Associated with Design of Solid State Transformers (Subhashish Bhattacharya, FREEDM Systems Center)
• Getting the Heat Out (George Slama, Wurth Elektronik)
• Spice Modeling of Transformer Losses and Thermal-Based Verifications (Qichen Yang,Florida State University)

Closing Remarks

• What Is Right With Magnetics (Alexander Gerfer, Wurth Elektronik)
   

We apologize for the poor sound quality on many of these recordings due to technical A/V problems at the workshop.

Core Losses

Fringing

Technical Session - Core Loss

• Keynote Part I: Core Loss: What We Know and What We Don't Know (Charles Sullivan, Dartmouth)
• Accuracy and Compensation Issues for AC Power Loss Measurements (Stefan Ehrlich, Fraunhofer Institute)
• Magnetic Core Dimensional Effects - Flux Propagation in Ferrites (Marek Rylko, SMA Magnetics)
• Generic Specification for Ferrite Cores (Ed Herbert, PSMA)
• Multi-parameter Magnetic Material Characterization for High Power Medium Frequency Converters (Byron Beddingfield, NCSU)
• What's Needed Going Forward (Ray Ridley, Ridley Engineering)

Technology Demonstrations Session

Magnetics

• AC core loss measurement on high phase angle material (Ryu Nagahama, Iwatsu Electric Company)
• Advanced ferrite technology (Sadhab Ganda,Philipp Laurer, EPCOS)
• DC Biased Chokes for High Frequency Power Applications (Martin Grübl, Sumida)
• Fundamentals of L, R, Z Measurments (Jenna Pollock, Independent)
• Magnetic Core Dimensional Effects – Flux Propagation In Ferrites (Marcin Kacki, SMA Magnetics)
• Powder Core Development and High Frequency Considerations (Brad Van Fleet, Magnetics)
• Power Loss Under Square Wave Excitation (JC Sun, Bs&T)
• Reducing Core Losses from Air Gaps (Bruce Carsten Associates)
• Thermal vs. Power Loss Efficiency Considerations for Powder Core Materials (Christopher Oliver, Micrometals)

Capacitor

• Self Clearing of Metalized Film Capacitors (Rob Haywood, W.L. Gore)
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Technical Session - Fringing

• Keynote Part II: Fringing Effects (Charles Sullivan, Dartmouth)
• Mystery Losses in Multi Air Gap (MAG) Inductor & Quantification By Means Of Advanced Thermometry (Dominik Neumayr, ETH Zurich)
• A simple analytical method to calcualte air gap induced eddy current losses in inductive components (Michael Baumann, Sumida)
• Impact of Fringing Effects on Design of DC-DC Converters (Michael Seeman, Eta One Power)
• Near Field Radiation of Storage Inductors in Power Electronics –Causes, Prevention & Suppression (George Slama, Wurth Elektronik) 
   

Keynote Session

Special Issue Session - Measurement of AC Power Loss

Technology Issues Session

Special Issue Session - Spice Modelling of AC Power Loss

Keynote Session

• Impact of Magnetics on Power Electronics Converter Performance – State of the Art and Future Prospects (Johann Kolar, ETH Zurich)
• Smaller-Faster-Lower Cost—Magnetic Materials Meet Rigorous Demands in Today’s High Power Fast-Paced Design Landscape (Donna Kepcia, Magnetics)

Special Issue Session - Measurement of AC Power Loss

• Opening Remarks (Ray Ridley, Ridley Engineering)
• Survey of Different Test Methods (Charles Sullivan, Dartmouth)
• Waveforms for Simulating Magnetic Cores (Bruce Carsten)
• Challenges to Improving the Accuracy of High Frequency (120 MHz) Test Systems (Zoran Pavlovic, Tyndall)
• Parameter Extraction (Data Crunching) (Ed Herbert, PSMA)
• Industry Standardization (Chuck Wild, Dexter Magnetics)

Technology Demonstration Session 

• DI/DT Measurments of Inductance (JC Sun, Bs&T Technologies)
• Developing Models and Simulations from Measurment Data (Andreas Muesing, Gecko-Simulations)
• Simulation vs Measurement (Rodney Rodgers, Allstar Magnetics)
• Magnetics Characterization Equipment/Test Set (Bruce Carsten) 
• Core Loss Measurement on High Phase Angle Material (Ryu Nagahama, IWATSU)
• StackPack Cores: Magnetic Device Design (Kevin McGivern, McGivern Technologies)
• Simulations and Measurements of Proximity Loss (Ray Ridley, Ridley Engineering)
• Calculation  of AC  Losses of Filter Inductors in Inverters (Lorandt Foelkel, Wurth Elektronik)
• Power Ferrites: Differences in Material for Traditional to High Frequency Applications (Rudy Geisler, National Magnetics)
• New TDK High Frequency Mn-Zn FER Materials (Jan Simecek, EPCOS/TDK)

Technology Issues Session 

• Package and Integration Technology in Point-of-load Converters (Laili Wang, Xi'an Jiaotong University)
• Developing Materials and Geometries for High Frequency Power Magnetics (John Lynch, Fair Rite)

Special Issue Session - Spice Modelling of AC Power Loss

• Overview of Modeling Methods (Charles Sullivan, Darthmouth)
• Spice Models For Conductor Losses (Ray Ridley, Ridley Engineering)
• Spice Models for Core Losses (Ed Herbert, PSMA)