Rare-earth-free
No permanent magnets means no exposure to rare-earth pricing or a supply chain concentrated in a single region.
How it works
Simora replaces permanent magnetism with electromagnetism. The rotor is activated wirelessly, with minimal interruption to operation.
Stator fields
Stator-generated electromagnetic fields provide torque production and excitation.
Air-gap coupling
Rotor excitation windings receive energy through electromagnetic coupling.
Rectified field
Rectified excitation supplies the rotor field winding, enabling field control.
Conceptual schematics, not to scale.
What the architecture buys you
Nothing wears at the rotor
With no brushes and no slip rings, the sliding contacts that drive maintenance on conventional wound-field machines are simply gone.
No excitation hardware
Excitation is built into the machine, so the separate exciter that adds cost, size, and mass to other contactless designs is simply not there.
Field you can control
The rotor field is adjustable, so efficiency can be optimized across the full torque and speed map, with a wide constant-power range at high speed.
Inherent fault safety
The field can be switched off, so there is no uncontrolled back-EMF spinning a faulted machine, a meaningful safety margin in vehicles.
Standard footprint
The architecture is designed to fit standard machine frames, opening a path to adoption without a new mechanical envelope or new tooling.
Customer concerns, Simora positioning
| Customer concern | Simora technology positioning |
|---|---|
| Rare-earth dependence | No permanent magnets required |
| Brush/slip-ring maintenance | Brushless contactless field excitation |
| Fixed rotor flux | Wirelessly controllable field |
| High-speed operating efficiency | Optimization through field control |
| System integration | Application-specific motor and drive co-design |
| Manufacturing economics | Resilient simplified material supply with copper and steel only |