UnivoLt Research Project
Compact, Quiet, and Highly Efficient: Megahertz Power Electronics for the Energy Transition
The UnivoLt project sets new standards in mobile energy supply – from solar modules to tactical drone charging infrastructure.
Research Focus
UnivoLt stands for "Universal Utilization of Renewable Energies through High-Efficiency Megahertz Power Electronics." In collaboration with partners such as TU Dortmund University and TDK, PACK LitzWire investigates solutions for mobile power electronics applications in the power range up to 3 kW. A multifunctional bidirectional converter serves as a technological demonstrator for the efficient integration of battery storage and renewable sources like solar modules.
The Challenge
The primary challenge is the drastic reduction of volume, weight, and noise emissions while simultaneously increasing power density. Operating in the megahertz range places extreme demands on wound components, as skin and proximity effects, along with parasitic capacitances, severely limit the efficiency of conventional solutions.
Numerical simulation of the current density distribution in stranded conductors with varying numbers of individual wires and wire diameters to investigate skin and proximity effects as part of the research project.
Our Solution Strategy
By utilizing state-of-the-art semiconductor technologies in combination with customized RUPALIT® HF litz wires, highly compact converter topologies are realized. The project focuses on bidirectional isolated DC/DC and AC/DC stages that enable universal and highly efficient energy transfer between storage systems, loads, and the 230V grid.
Result
The project, scheduled to run until late 2026, aims to realize tactical, mobile energy supply systems. Potential applications range from charging infrastructure for drones and military Uninterruptible Power Supply (UPS) systems to compact, low-noise balcony solar systems for residential use. UnivoLt thus paves the way for a more flexible and mobile energy transition.
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Product Manager