Dual mechanical port magnetic conductance harmonic type electromagnetic gear composite permanent magnet motor

Abstract

Provided is a dual mechanical port magnetic conductance harmonic type electromagnetic gear composite permanent magnet motor which can be widely applied to industrial transmission fields such as wind power generation, electric automobiles, ship driving and server driving. The electromagnetic gear composite permanent magnet motor is characterized is that main transmission components of the electromagnetic gear composite permanent magnet motor consists of a stator formed of a stator iron core (9) and a stator winding (8) having 2ps poles, a permanent rotor formed of a rotor iron core (17) equipped with 2pr rotor permanent magnets (18) and an output shaft (16), and a salient pole magnetic conductance wave rotor (6) having Zb salient poles, wherein a numerical difference between the number of pole-pairs ps and pr is relatively small; and the stator, the permanent magnet rotor and the salient pole magnetic conductance wave rotor (6) are coaxially disposed, are mutually coupled through a radial air-gap magnetic field, and are mutually coupled in a salient pole straight axis area of the high-speed rotating salient pole magnetic conductance wave rotor (6) by using a principle of heteropolarity magnetic field attraction with a small pole difference so as to drive the permanent magnet rotor with a small pole difference to rotate at a low speed. Therefore, power speed changed and torque conversion controlled drive with no mechanical contact and no friction is realized.

Description

technical field [0001] The present invention is a dual-mechanical port permeance harmonic electromagnetic gear composite permanent magnet motor, which combines the magnetic permeance harmonic electromagnetic gear drive and the permanent magnet motor with less extreme difference, and has two mechanical power ports and The multi-port permanent magnet variable speed and variable torque motor with one electric power port is a variable speed transmission energy conversion device that realizes high-speed small-torque mechanical energy, low-speed high-torque mechanical energy, and electric mutual conversion. It can be widely used in industrial robot servo drives, wind power Power generation, hydroelectric power generation, hybrid electric vehicles, ship drives and other industrial transmission fields that require direct drives. Background technique [0002] In many transmission fields of industrial applications, it is often necessary to realize the mutual conversion of low-speed, h...

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Problems solved by technology

[0004] Recently, the inventors of this case have also proposed a new structure of "magnetic gear pair with less pole difference permeance harmonic type of radial magnetic field" (201210097726.2 and 201220139705.8). The eccentric structure of the magnetic gear pair with less extreme difference is improved by combining the principle of pole difference magnetic field staggered poles with the principle of mechanical harmonic gear staggered tooth transmission. Two permanent magnetic fields with different pole numbers form different polarity mutual attraction coupling in the region of specific wave number to achieve To achieve the purpose of torque transmission and variable speed transmission, but this is a concept of dual permanent magnets coupled in a specific area for speed change. Although the magnetic gear of this structure solves the structural defect of the eccentricity of the magnetic gear with less extreme difference, it cannot be adjusted due to the permanent magnetic field , so it is impossible to realize the dynamic adjustment of the torque with the load change

So far, no one at home and abroad has proposed a permeable harmonic electromagnetic gear that can dynamically track the load torque by changing the magnetic field by adjusting the current; moreover, no one at home and abroad has proposed the combination of magnetic gear and permanent magnet motor From the perspective of the magnetic circuit structure, it is a new structure that is completely integrated and unified, and has the functions of magnetic gear shifting and permanent magnet motor drive. Such technical research and structural invention are very useful for engineering applications, especially for hybrid electric vehicle drive systems with parallel structures. And wind power generation, submarine controllable drive, etc. are of great significance

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