Quasi-halbach array outer rotor permanent magnet synchronous gearless traction machine

Abstract

A quasi-Halbach array outer rotor permanent magnet synchronous gearless traction machine, which relates to the technical field of gearless traction machines, including a machine base, a rotating shaft, an outer rotor, an inner stator, a traction wheel and a brake, and the outer rotor includes a magnet mounting frame And permanent magnets, the magnet mounting frame is installed on the rotating shaft, the permanent magnets are arranged around the outer circumference of the inner stator, between the inner stator and the outer shell according to the quasi-Halbach array, and are fixedly connected with the magnet mounting frame; the quasi-Halbach permanent magnet array consists of a bottom surface of n The regular polygonal prism-shaped permanent magnets with strip sides are fixed on the permanent magnet mounting frame of the outer rotor, wherein n is an integer greater than 3. The processing difficulty is low, and the consistency of the magnet is high. With the air gap, the harmonic component of the magnetic field is reduced, the magnetic field distribution is closer to the ideal sine, the side length of the magnet section is reduced, and the thickness of the rotor is greatly reduced. Under the condition of ensuring the strength, the moment of inertia of the rotor is reduced, and the overall weight of the traction machine is reduced. , can improve the control accuracy and other advantages.

Description

technical field [0001] The present invention relates to the technical field of gearless traction machines. Specifically, it is a traction machine with simple structure, good manufacturability, convenient processing, high utilization rate of permanent magnet materials, high transmission efficiency, less noise, stable operation, easy control and low cost. Quasi-Halbach array permanent magnet synchronous gearless traction machine. Background technique [0002] The traction machine is the core executive component of the elevator, and its performance directly affects the comfort, safety and energy-saving effect of the elevator operation. Generally speaking, the development history of traction machines has experienced the development process from geared to gearless. At the beginning of the 20th century, the American OTIS company invented the traction machine driven by friction traction. This type of traction machine is small in size and highly versatile, so it became the form of ...

AI Technical Summary

Problems solved by technology

In the existing motors using Halbach permanent magnet arrays, arc-shaped magnets with different magnetization directions are pasted and fixed on the surface of the rotor to form a quasi-Halbach array. The quasi-Halbach array of this structure requires at least four arc-shaped magnets. Magnetization in one direction requires complex magnetization equipment, high manufacturing cost, complex magnetization operation, time-consuming and laborious, low power utilization rate, and waste of energy

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