Final Applications

Testing and demonstration of BEETHOVEN magnets in prototype final applications:

REE-lean wind turbine generator

E

We will fabricate and test a HEA-magnet based Permanent Magnet Generator (PMG) with a targeted output of 5 kW. The device will work as an axial electrical machine, employing GS highly innovative generator design, which is protected by 11 international patent filings.

E

The main design objective project will be to minimize the active material mass (magnets and coils) to keep the total generator mass as low as possible.

E

The magnet mass of the GS generator will be minimized by a unique magnet configuration, which augments the strength of the magnetic field across the generator air gap by 73%, and by increasing the rotational speed.

E

The HEA magnets would contribute to the structural mass of the generator. The main challenge for fabricating the prototype will be increasing the rotational speed without losing stability (which the GS team of engineers will address by exploring different designs)

REE-free flywheel

E
Ferrite magnets supplied by WP3 will be integrated at WUP into a 30-kWh prototype of a flywheel for storing electrical energy. WUP will design with FE methods, build the prototype and their facilities, validate and test.
E
We will integrate the magnets in production size units and test key parameters that will allow evaluating magnets for the purpose of being used in flywheels.
E
A special load profile simulating the application environment on moving ships for the flywheel will be developed and executed.
E
A qualifying test report will be generated. Tests will be performed to evaluate the usage of ferrite magnets as magnets for the bearing construction and for the stabilizers of the flywheel.

REE-free/lean E-motor

E
Two motors will be designed based on the BEETHOVEN magnets, one with REE-lean HEA magnets and one with the W-type sintered ferrites. Based on the best design and the development of magnets in WP3, we will decide on a single complete motor design, including drawings, to be developed.
E
The prototype motor using BEETHOVEN magnets will be built in the UU laboratory and tested according to common test protocol for motors including measurements of the torque-speed envelope and efficiency maps. The main challenge with ferrite magnets is to correctly model the magnets to be able to handle the higher demagnetization risk.
E
BEETHOVEN improved models for ferrite magnets will address the demagnetization challenge and develop improved motor design models adapted for ferrite magnets. These models can be used to design a magnetic circuit in the motor that helps protecting the magnets against demagnetization.
E
By using improved ferrite magnets developed in BEETHOVEN and more advanced magnet models we are aiming at designing e-motors with comparable power density and efficiency as current REE motors.