Direct-drive generators
Large permanent-magnet generators couple the rotor and generator without a high-speed gearbox.
Green Energy & Wind Power
Green Energy: Magnetic Solutions for High-Performance Wind Turbines
High-performance NdFeB magnets and robust magnetic assemblies for efficient, low-maintenance and durable wind-energy systems.
Wind Energy Engineering
Permanent magnets as a key component of modern wind generators
Wind turbines convert rotor motion into electrical energy. In permanent-magnet generators, high-performance NdFeB magnets provide the required magnetic field and enable high efficiency across a broad speed range.
Permanent magnets contribute to more compact generators, lower electrical losses and reduced maintenance, particularly in direct-drive and medium-speed concepts. Spacemagnets Europe supports magnet-grade, segment-geometry, coating and assembly selection for onshore and offshore projects.
High generator efficiency
Strong, stable magnetic fields support efficient energy conversion even at partial load.
Compact system design
High energy density reduces installation space and mass for a given generator output.
Low maintenance demand
Permanent-magnet concepts require no electrical rotor excitation or slip rings.
Long-term reliability
Matched materials, coatings and assemblies protect magnetic performance over the service life.
Magnets in wind-energy systems
Medium-speed generators
Compact PM generators combine a geared speed concept with high power density.
Pitch drives
NdFeB magnets enable precise and dynamic blade adjustment under changing wind loads.
Yaw systems
Magnetic drives and sensors support accurate nacelle alignment with the wind direction.
Auxiliary and service drives
Compact electric motors perform cooling, lubrication, pumping and maintenance functions.
Sensing and monitoring
Defined magnetic fields support speed, position and condition monitoring throughout the turbine.
Typical magnet grades for wind-power applications
The following ranges reflect common direct-drive, medium-speed and pitch applications. Final selection is based on the magnetic operating point and actual environmental conditions.
| Application | Typical NdFeB range | Design objective |
|---|---|---|
| Direct-drive generator | N50H / N54M | High remanence and energy density for large generator rotors |
| Medium-speed generator | N42SH–N45SH / N38UH–N40UH | High power density with increased thermal margin |
| Pitch and auxiliary drives | N35SH–N42SH | Dynamic response, compact design and reliable continuous operation |
Magnet designations are technical guidance values. Permissible operating temperature and demagnetization margin also depend on geometry, counter-field, cooling, coating and assembly conditions.
From magnet segment to ready-to-install generator solution
Large segments and custom geometries
Precisely manufactured arc and segment magnets with defined magnetization direction and tight tolerances.
Rotor and pole assemblies
Pre-assembled, bonded and mechanically secured magnetic modules reduce installation effort and process risks.
Material and magnetic-circuit optimization
Simulation and project-specific material selection balance efficiency, thermal margin and economical material use.
Engineering priorities for wind-power magnets
Corrosion protection for onshore and offshore
Multilayer coatings and matched sealing concepts protect against moisture, salt and condensation.
Thermal and demagnetization margin
The magnetic operating point is secured for peak loads, counter-fields and the full temperature range.
Mechanical security
Bonding, encapsulation and retention concepts secure large magnet segments against centrifugal force, vibration and shock.
Precise flux distribution
Tight geometry and magnetization tolerances support low torque ripple and uniform generator output.
Reduced eddy-current losses
Segmentation and laminated magnet concepts can reduce electrical losses and local heating.
Series quality and traceability
Documented material, dimensional, coating and magnetic inspections ensure repeatable assemblies.
Engineer your wind-power magnet project with us
Send us generator output, speed, temperature range, segment dimensions, coating requirements and environmental conditions. Our engineering team supports you from magnet-grade selection through the ready-to-install rotor assembly.
Engineering resources
Permanent magnets for wind energy and generators
NdFeB magnets and custom magnetic assemblies enable compact, efficient wind-turbine generators. For elevated operating temperatures, suitable samarium cobalt magnet solutions can also be evaluated.