Solar container mobile magnet permanent magnet bias

What is a permanent-magnet biased magnetic bearing?

Abstract: Permanent-magnet (PM) biased magnetic bearings use a magnet to produce the bias field rather than applying a bias current, thereby eliminating the associated electrical power losses and heat generation. In the existing PM-biased magnetic bearings, the PM materials NdFeB or SmCo are generally employed due to their superior properties.

Can a pm-biased magnetic bearing use a low-coercivity alnico magnet?

This article proposes a new type of PM-biased magnetic bearing that uses a low-coercivity AlNiCo magnet and equips a magnetization coil to magnetize the magnet in situ.

Can a low coercivity alnico magnet improve the controllability of PM bias flux?

To improve the controllability of the PM bias flux in the integrated radial-axial magnetic bearing (RAMB), this article proposes a new design that uses a low coercivity AlNiCo magnet and equips a magnetization coil.

Which material should be used for PM-biased magnetic bearings?

In the existing PM-biased magnetic bearings, the PM materials NdFeB or SmCo are generally employed due to their superior properties. However, these PMs should be pre-magnetized, and the generated bias magnetic field cannot be adjusted, limiting the flexibility of the magnetic bearings.

Can bias magnetic flux be adjusted?

Bias magnetic flux plays a crucial role in the performance of active magnetic bearings. However, the bias flux produced by NdFeB or SmCo materials in traditional permanent-magnet (PM) bias bearings cannot be adjusted, resulting in inflexible bearing performance.

What are active magnetic bearings?

The proposed design offers a new idea for magnetic bearing structure and control. Active magnetic bearings are a mechatronic product that generates controllable magnetic force to support the rotor without contact, demonstrating significant advantages, such as oil-free, long-life, vibration suppression, and condition monitoring [1, 2, 3, 4, 5].