Research and Development

Technical Papers

• In our technical paper "AC Loss Behavior of Wireless Power Transfer Coils" we illustrate the analytical calculation of power losses and present a new setup for measuring the self-heating of wireless power transfer coils under AC conditions with large current amplitudes. Here you can directly download the abstract on "AC Loss Behavior of Wireless Power Transfer Coils".
• The technical paper "Analysis, Design and Optimization of a Combined Wireless Power Transfer and Near Field Communication System" describes how to build a combined power transfer and near field communication system and how to implement the NFC antenna of our new product 760308101312 into an existing NFC system
• "Circuit and Antenna Design of a Simultaneous Wireless Power Transfer and Near Field Communication System" describes how to build a simultaneous power transfer and near field communication system using our new product 760308101150 and the steps required to ensure simultaneous operation.
• In our technical paper "Superconducting Wireless Power Transfer Beyond 5 kW at High Power Density for Industrial Applications and Fast Battery Charging", we demonstrate a compact WPT system based on superconducting coils that can transfer power of 5 kW at an efficiency of more than 97 %. Here you can download the technical paper directly. Here you can download an abstract directly.
• Read our technical paper "Design and Optimization of Simultaneous Wireless Power Transfer and Near Field Communication Systems" and learn, how to build a simultaneous WPT/NFC system using our new product 760308101150 and what influence component tolerances and temperature differences have on the impedance matching of the NFC system.This paper was first published at the PCIM Europe 2021 conference (www.pcim-europe.com) in 2021. The authors are Christian Merz, Daniel Gückelhorn and Cem Som.
• In our technical paper “Mathematical Model of the Temperature Rise of a Wireless Power Transfer Coil in DC Operation” a mathematical model which is used for calculating the temperature rise of wireless power transfer coils in dependency of the DC current is introduced.
  This paper was published at the PCIM Europe 2022 conference (www.pcim-europe.com) in 2022 for the first time. The authors are Daniel Gückelhorn, Christian Merz and Cem Som.

Research and Development

• Bi-directional wireless power transfer in-band communication
• Wireless power transfer and NFC communication in one system
• Wireless Power Transfer systems at high power level up to 11 kW
• New coil designs based on superconducting wire for very high efficiency systems
• New customized proprietary wireless power transfer solutions