Industrial micromotor BLDC

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Overview
Mirmex's pioneering technology transforms conventional electric motors by eliminating the need for copper wire windings. This enables innovative axial flux BLDC micromotors that offer high performance, compactness and affordability.

Technology
Patented axial-flux stator winding topologies combined with state-of-the-art motor modeling and optimization software. Advanced topologies (including multi-airgaps) are feasible, providing zero cogging on variants and enabling unique coil patterns unachievable with conventional wire-winding methods.

Product range (key metrics)
Diameter [mm]: 12 - 300
Thickness [mm]: 4 - 60
Power (up to) [W]: 3000
Torque (up to) [Nm]: 2
Speed (up to) [rpm]: 50 000

Benefits

• More compact: up to 50% smaller at equal performance compared to competitors.
• Best performance density: superior copper fill-factor improving motor performance within a given volume.
• Custom made: full design freedom (diameter, length, speed, voltage) to match application constraints.
• Easy prototyping: faster and more affordable custom motor prototyping (example claim: 10x faster prototype manufacturing).
• More sustainable: reduced energy use and lower raw material consumption (up to less than 45% raw materials required in some cases).
• Better thermal behavior: higher fill-factor and loss-balancing capabilities significantly reduce thermal losses.
• Ambient resistant: designed to endure tough conditions such as large temperature variations, medical detergents, corrosive atmospheres and dusty environments.

Key features

• Zero-copper-wire winding architectures (patented).
• Unique coil topologies enabling higher performance and efficiency.
• Capability to supply both axial and radial-flux motors, single and multi-airgap designs.
• Ability to optimize inertia, torque and weight for specialized applications.

Application examples
Space Flywheel
Diameter: 140 mm
Length: 18 mm
Speed: 1000 rpm
Power: 30 W
Torque: 300 mNm
Efficiency: 90%
Key Features

• Super light design to reduce weight while delivering required performance.
• Optimized inertia and torque for improved system efficiency.

Active Prosthetic Arms & Legs
Diameter: 40 mm
Length: 10 mm
Speed: 12,000 rpm
Power: 36 W
Torque: 30 mNm
Efficiency: 94%
Key Features

• Specific winding topology to finely tune performance and efficiency.
• Extremely compact design for easier integration in prosthetic systems.
• Custom-made options enable fitting motor precisely to application needs at competitive cost.

Project management flow

• Scope & Modeling
• Prototyping
• Testing & Fine Tuning
• Mass Production

Caractéristiques / spécifications techniques

• Diameter range: 12 - 300 mm.
• Thickness range: 4 - 60 mm.
• Maximum power: up to 3000 W (depending on design).
• Maximum torque: up to 2 Nm (depending on design).
• Maximum speed: up to 50,000 rpm (depending on design).
• Example – Space Flywheel: 140 mm dia, 18 mm length, 30 W, 300 mNm, 90% efficiency.
• Example – Active Prosthetic: 40 mm dia, 10 mm length, 36 W, 30 mNm, 94% efficiency.
• Topology: patented axial-flux stator winding topologies (zero copper wire windings).
• Design options: axial or radial-flux architectures; single or multi-airgap variants; custom diameters, lengths, speeds and voltages.
• Key performance attributes: high performance density, improved thermal behavior, ambient resistance, and reduced material & energy consumption.