Hochschule Flensburg

Case study

CG Emotron Powers Advanced Test Bench for Wind Energy Simulation at Hochschule Flensburg

When Hochschule Flensburg (Flensburg University of Applied Sciences) set out to develop a cutting-edge test bench to simulate the fluctuating behavior of wind in wind turbine applications, they needed more than just components—they needed a complete, engineered solution.

CG Emotron delivered just that: a fully integrated, high-performance drive system tailored specifically to meet the university’s ambitious technical and spatial requirements.

A Complex Setup Simulating Real-World Conditions

The test bench is powered by a gas engine and designed to replicate the variable torque and speed conditions found in actual wind energy environments.

At the heart of the solution is an 800 kW, 690V system driven by CG Emotron’s FDUL69-800 inverter, operating since 2021.
To support the university’s advanced research objectives, CG provided a comprehensive package, including:

Generator
VSI inverter to control the generator
AFG inverter for grid feeding
Specially engineered cabinet housing
Water-to-water cooling system

The configuration allows the test bench to either power the university or feed electricity back to the local grid, supplying Stadtwerke Flensburg with energy via the AFG inverter. The water to water cooling system utilizes saltwater from the nearby Flensburger Förde.

A Fully Integrated Cabinet Solution

CG developed a custom cabinet solution integrating not only the drive, but also power distribution, transformer, water cooling and ready-to-fit battery interface.

Supporting Advanced Research with Reliable Data

With the system now fully operational, Hochschule Flensburg is using it to power advanced research in wind energy simulation.

The CG Emotron system enables the university to monitor a wide range of variables with precision. Their measurement system includes:

Engine and generator angular speed
Generator-side voltage and current
DC link voltage and current
Grid-side voltage and current
Gas injection rate
Transformer temperature

These measurements can be adapted as research demands evolve—making the test bench a flexible platform for future innovation.

Overcoming Physical Constraints with Smart Engineering

The project required more than just technical excellence—it demanded precision planning and adaptability. The drive cabinet was destined for a low-ceiling room in the basement of the university, while the generator was placed in a different room.

To overcome this challenge:

The cabinet was disassembled for transport
Each component was moved into position separately
The full system was reassembled and commissioned on-site, tailored to fit the unique spatial constraints

Thanks to careful preparation and coordination, CG Emotron was able to deliver and commission the system successfully—on time and to specification.

A Reliable Partner in Research and Innovation for your full testbench requirement

This project reflects what CG Emotron does best: delivering reliable, tailored solutions to complex challenges. By combining deep application knowledge with innovative engineering and responsive service, CG Emotron supported Hochschule Flensburg with a complete solution, from concept to commissioning.

Now, the university has a future-ready platform that not only supports its academic goals—but also can contribute power back to the grid.
Looking for a partner to support your next test system or special drive application? CG Emotron delivers where others can not. Let us talk!