Permanent magnet motors (PM motors) form the backbone of countless modern applications, from robotics to electric vehicles, industrial drive systems, and advanced defense drones. Thanks to their high efficiency, power density, and reliability, they have become essential in both civilian and military technologies.
At Bakker Magnetics, we work daily to optimize these motors. Our magnet technology supports OEMs and engineers in developing more compact, powerful, and sustainable drive systems. While PM motors are already leading the way, their full potential has yet to be realized.
The role of Permanent Magnets in PM motors
PM motors use powerful permanent magnets, typically based on neodymium-iron-boron (NdFeB) or samarium-cobalt (SmCo), that are integrated into the rotor. Unlike electromagnetic field windings, these magnets offer:
- Higher torque density
- Greater efficiency at low speeds
- More compact size for weight-critical applications
This makes them extremely suitable for a wide range of applications, including e-mobility technology, automated processes and production lines, defense vehicles, electric propulsion systems in vehicles and marine vessels, and unmanned aerial vehicles such as drones.
Bakker Magnetics delivers custom magnet solutions tailored to these demanding environments.
Innovations in magnet technology: where are the gains?
Advanced magnetic materials
Research into alternatives to rare earth elements has led to the development of new materials, such as:
- Ferrite composites with enhanced performance
- Nanocrystalline alloys with higher coercivity and temperature resistance
- Metallo-organic magnets for low-energy applications
These alternatives offer both technological and strategic advantages without significant performance drawbacks.
Topology optimization of magnet placement
Using finite element method (FEM) simulations, we optimize in-house the placement, orientation, and shape of magnets. The results include:
- Reduced material usage
- Lower torque losses
- Improved thermal dissipation
This provides direct added value for high-performance motors in military vehicles and electric propulsion systems.
Segmentation and modular design
At Bakker Magnetics, we develop segmented magnets that simplify replacement and maintenance, particularly for systems used in unmanned defense applications and automotive platforms. The scalability of the design offers flexibility for OEMs in mass production.
Additive manufacturing of magnets
Thanks to recent breakthroughs in powder-based printing techniques, complex magnet geometries can now be produced that were previously impossible. This opens up possibilities for custom-designed motors with optimal magnetic flux guidance.
Practical impact on defense and automotive
The application of innovative magnet technology provides our clients with concrete, measurable benefits:
- Defense: More compact motors with greater reliability under extreme conditions (temperature, vibration, pressure)
- Automotive: Lighter and more powerful EV drivetrains with increased range and reduced energy losses
- Robotics and Aerospace: Precision positioning with low inertia and minimal heat generation
- Industrial Automation: Increased system efficiency and reduced maintenance costs through durable magnet integration
Sustainability and strategic independence
Dependency on rare earth materials poses a strategic risk. Bakker Magnetics proactively addresses this by:
- Researching alternative alloys and composites
- Advising on material choices with lower geopolitical risk
- Supporting initiatives for European raw material supply
We assist clients in developing strategies aligned with initiatives such as the Critical Raw Materials Act, which focuses on circularity and innovation.
Optimization begins with magnet design
Permanent magnet motors are essential to the future of mobility and defense. Through our deep material expertise and innovative design approaches, engineers can make their systems smarter, more sustainable, and strategically secure.
At Bakker Magnetics, we believe magnet technology is not just a component but a strategic key to performance, sustainability, and independence.
Want to learn more?
Interested in how we can support your motor optimization with advanced magnets?
Make an appointment with one of our engineers for custom advice.
