Our Fo­cus Areas

Power Elec­tron­ics

• Fast-switching inverters
• Converter optimization
• Control and modulation
techniques
• Application fields:
• Automotive
• Industry
• Datacenters

Learn more

Mag­net­ic Com­pon­ents

• Measurement and modelling of
soft-magnetic materials
• Investigation of innovative
design concepts
• Implementation & testing of
prototypes

Learn more

In­vert­er-Dom­in­ated Grids

• Future grid forming inverters
• Model predictive control
• Reinforcement learning control

Learn more

Drive Con­trol

• Data and model based optimal
control
• Systemidentification
• Real-time implementation and
validation

Learn more

Power Elec­tron­ics

NeMo.bil

• Design and practical implementation
of bidirectional, grid-forming,
communicating 3.3 kW and 22 kW
on-board chargers
• Verification of the simulated drive
control system on a motor test
bench

Cas­caded Con­vert­ers for Hy­dro­gen Elec­tro­lys­is

Advantages of Cascaded
Converters
• Interchangeable identical modules
• No 50 Hz transformer
• Reduction in size and cost
Research Focus Areas
• Design a 22 kW LLC converter
• Efficiency optimization
• Variable output power
• Real-time control

GaNi­us – Low EMI Three-Phase PFC

• Characterization of the
bidirectional GaN switches
• Circuit design
• Development of a digital
control system
• Construction of an 11 kW
prototype

Ca­pa­cit­ive LLC

• Development and optimization of
an IGBT-based LLC converter
• Optimized synchronous rectification
• Mathematical modeling of the transfer characteristics
• Bidirectional ZCS LLC converter

Ope­nAuto­MoLE

Open-source software toolkit for automated,
modular modeling, simulation, and design of
power electronic converters
• Modeling of individual power electronic
components
• Efficient multi-objective optimization of the
overall converter system to achieve high
efficiency and power

Ma­gne­t­ic Com­­pon­ents

Mag­net­ic Com­pon­ents in MHz Range

• Measurement methods in
the MHz range
• Modeling of inductance
and core losses
• Loss-optimized magnetic
component designs

Sol­id-State Trans­formers

What are Solid-State Transformers?
• Advanced transformer technology for modern medium-voltage systems
• Flexible integration of renewable energy and smart-grid applications
• Compact and resource-efficient power
• Multi-objective transformer optimization
• Geometry-agnostic core loss models
• Measurements in medium-voltage
test bench

Planar Mag­net­ics

Why PCB Planar Magnetic Components?
• Planar magnetics are especially suited for
GaN-based converters with high power density
• Matrix configurations allows flux cancellation
• PCB windings allow automated fabrication

• Optimization of winding
and via arrangement
• Designs with reduced
parasitic capacitance
• 3D modelling conce

In­­ver­­ter-Do­mi­n­a­ted Grids

Mi­crogrid Labor­at­ory

• Control and management of
electrical power grids
• Hybrid grids
• AC–DC systems
• Solid-state transformers
• Grid standards
• Inverter control
• Optimal control
• Artificial intelligence
• Grid stability
• Energy management
• Hardware testing
• Hardware fault handling and
mitigation

Drive Con­­trol

LEA-AI

• Real-time capable implementation
• Design methods for the reward function
• Safety and data efficiency during the training phase
• Transfer of a trained agent to a new system
• Control of partially observable systems
• Application: Control of electric drives and microgrids

Pub­lic­a­tion:

Optimal Control of Voltage-Forming Grid Inverters by Model Predictive Control and Reinforcement Learning

D. Weber, D. Schmies, J.H. Lange, M. Schenke, O. Wallscheid, IEEE Access 14 (2026) 38517–38535.

DOI

Reinforcement Learning-Based Control of Voltage-Forming Grid Inverters With Arbitrary Loads

D. Weber, J. Lange, O. Wallscheid, IEEE Journal of Emerging and Selected Topics in Industrial Electronics (2026) 1–12.

DOI

Reinforcement Learning: A Comprehensive Open-Source Course

A.H.A. Abdelwanis, B. Haucke-Korber, D. Jakobeit, W. Kirchgässner, M. Meyer, M. Schenke, H. Vater, O. Wallscheid, D. Weber, Journal of Open Source Education 9 (2026).

DOI

Adaptive DC-Link Voltage Control for 22 kW, 40 kHz LLC Resonant Converter Considering Low-Frequency Voltage Ripple

R. Unruh, J. Böcker, F. Schafmeister, Electronics 14 (2025).

DOI

Three-Phase Instantaneous Current Controller for Unbalanced Grid Inductors Without DQ Transform for Cascaded H-Bridge Converters

R. Unruh, J. Böcker, F. Schafmeister, in: 2025 Energy Conversion Congress &Amp; Expo Europe (ECCE Europe), IEEE, 2025.

DOI

Show all publications

Power Electronics and Electrical Drives

Learn more about us:

Lab facilities