Double-permanent magnet outer-rotor permanent magnet biased radial magnetic bearing

Abstract

The invention relates a double-permanent magnet outer-rotor permanent magnet biased radial magnetic bearing comprising outer magnetic conductive rings, outer permanent magnets, stator cores, excitation windings, inner magnetic conductive rings, inner permanent magnets and rotor cores, wherein four magnetic poles consist of each stator core, eight magnetic poles of the left end and the right end of the magnetic bearing consist of two stator cores, and magnetic poles in the positive and the negative directions of an X axis and a Y axis respectively consist of the eight magnetic poles; each stator magnetic pole is wound with the excitation winding; the rotor cores are positioned outside the stator cores; the outer magnetic conductive rings are positioned outside the rotor cores; the outer permanent magnets are positioned among the outer magnetic conductive rings; the outer magnetic conductive rings are connected with the rotor cores; certain gaps are retained on the inner surfaces of the rotor cores and the outer surfaces of the stator cores to form air gaps; and the permanent magnets are positioned among the inner magnetic conductive rings. The invention solves the problem of large remanence moment of the traditional permanent magnet biased outer-rotor radial magnetic bearing for space.

Description

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AI Technical Summary

Benefits of technology

This new technology uses two different ways for creating a strong magnesis system inside a flying wheel's structure called the external magneive rings (EMS). These EMR systems are designed differently from previous designs where they were used only on one side or another instead of being symmetrically located around their center point. By doing this, there can be fewer components needed compared to traditional methods like cushion mountings or rubber seals. Additionally, these techniques help reduce any remaining unbalanced force caused by gravity when turning at high speeds. Overall, this innovative technical solution improves efficiency and reliability during flight operations while also addressing issues such as increased size due to added materials required.

Problems solved by technology

Technological Problem: Current technical problem addressed in this patents relates to improving the reliability and efficiency (M/H) of magnelectrostatic thrust or electricity controlled flying wheel systems while reducing their overall weight without compromising their function capabilities. Existing solutions involve either expensive rare metallic material or complex structures like pausser circuits, but these techniques result in increased complexity and increase mass.

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