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Technology

Most of the electric vehicle motors on the market today are based on the radial flux topology, first conceptualized almost 200 years ago. In 1821, British scientist Michael Faraday created a machine based on a vertically suspended wire that moved in a circular orbit around a magnet; in 1834, the first-ever rotating electric motor that developed a significant mechanical output power was developed by Russian scientist Moritz Hermann Jacobi. Today again, new electric motor developments are taking place, and the market is poised for disruption.

BREAKTHROUGH MOTOR INNOVATION SET TO
REVOLUTIONIZE ELECTRIC MOBILITY

Introducing the next generation of electric motors, featuring new levels of power, efficiency and manufacturability. Based on axial flux technology, a concept first researched and patented by Nikola Tesla back in 1889, axial flux represents the future of electromagnetic EV motors. Traxial is leveraging the advantages of this technology with a new generation of compact, light-weight electric motors that can be produced in high volumes.

The advantages of axial flux technology, compared to conventional radial flux electric PM motors, are extensive: axial flux technology offers significantly increased power density and efficiency, enabling longer range, lighter motor weight and smaller motor size, opening up a host of new and more flexible options for powertrain design.

Our yokeless axial flux motors, incorporating years of research & development and in-depth collaboration with our customers and suppliers, feature a pancake space-saving design that offers innovators in e-mobility more compact and efficient powertrain solutions. Thanks to the absence of the stator yoke, our yokeless axial flux machine provides a high power density combined with greater efficiency compared to other topologies.

Traxial Motor Assembly
Traxial Karel

KEY MOTOR FEATURES

Our yokeless axial flux motors offer:

  • The most effective electromagnetic design resulting in the lowest material use per kilowatt
  • Dual-rotor permanent magnet configuration to deliver the highest possible torque-to-weight ratio
  • Yokeless stator to achieve the shortest possible flux paths and lower overall weight
  • Low iron content resulting in lower iron losses
  • Concentrated windings with rectangular-section copper wire to minimize copper losses

Want to learn more about axial flux technology, and how it delivers extreme power density?

Discover our motors

LOWEST STATOR TEMPERATURE THANKS TO DIRECT OIL COOLING

Our patented cooling system uses oil to cool the motor windings directly and uniformly. This ensures a lower stator temperature compared to any other technology available, and eliminates hot spots. This further increases the power densities that our motors can provide.

DESIGNED FOR COST-EFFECTIVE MANUFACTURING PROCESSES

Our motors have been developed from the beginning with design-for-manufacturing in mind to limit manual labor and to make the production process cost-effective. Each component can be manufactured using standard automated production processes, and can be easily scaled for large series production.

Traxial Series Manufacturing

IMPACT OF OUR TECHNOLOGY

REDUCING RANGE ANXIETY WITH AXIAL FLUX

Yokeless axial flux motors from Traxial offer a solution to one of the main concerns of electric vehicles: range anxiety. The efficiency of an electric motor is mainly determined by copper and iron losses. We’ve developed solutions to significantly reduce these losses:

  • The absence of a stator yoke significantly lowers the iron mass and therefore the iron loss.
  • Concentrated windings with a very high copper fill factor result in optimal use of copper and as a result, low copper losses.

Yokeless axial flux motors from Traxial deliver the highest efficiency over a wide speed range, resulting in more vehicle range compared to traditional EV motors.

Additionally, our compact and lightweight design can easily be embedded in next-generation powertrain configurations and leaves extra space for increased battery storage capacity.

Dominant E-motor Losses
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