Axial Flux Halbach Array & Electromagnetic Halbach Array: Application in Stators & Rotors

Welcome to our product page, focusing on the application of Axial Flux Halbach Array and Electromagnetic Halbach Array in motor stators and rotors. Halbach Array, with its unique one-sided magnetic focusing effect, boosts torque density, reduces energy consumption, and enables compact motor designs. Below is a concise overview of their core applications and advantages.

What Are Axial Flux & Electromagnetic Halbach Arrays?

- Electromagnetic Halbach Array: Arranges permanent magnets/electromagnetic coils to enhance magnetic fields on the working side (air gap) and cancel them on the non-working side, maximizing flux utilization and reducing leakage loss.

- Axial Flux Halbach Array: A derivative for axial flux motors, with flux parallel to the rotation axis. Applied in disk-shaped motors, it combines Halbach’s focusing advantage with high power density for compact, efficient scenarios.

Both technologies increase air gap magnetic density by 30%-40% (same magnet dosage), reducing torque ripple and iron loss for better stator and rotor performance.

Core Applications in Stators & Rotors

The Electromagnetic Halbach Array is widely used in stators and rotors, optimizing magnetic distribution, reducing weight, and improving efficiency.

1. Rotor Applications (Mainstream)

- Inner Rotor: Halbach Array attached to the rotor core, forming a sinusoidal air gap magnetic field. Reduces loss and torque ripple, suitable for precision servo motors and robots. Rotor weight is cut by 30%-40% via thinner/eliminated yoke.

- Outer Rotor: Array on the outer rotor’s inner wall, maximizing air gap magnetic density. Ideal for hub motors, flywheel energy storage, and high-speed fans, with 15% lower iron loss in ironless designs.

- Bearingless Motors: Stator tooth-mounted Halbach Arrays create bias flux, realizing integrated rotor suspension and rotation for specialized industrial needs.