RU2499345C1 - Magnetoelectric motor - Google Patents

Abstract

FIELD: electricity.

SUBSTANCE: magnetoelectric motor comprises a rotor, made of two parallel discs fixed on the shaft, on every of which there is a ring-shaped row of permanent magnets with alternating polarity. Poles of the permanent magnets arranged at one of rotor discs face the opposite poles of the magnets placed on the other disc of the rotor, the stator is placed between discs of the rotor with a gap relative to the shaft and is equipped with circular windings in the form of isosceles trapezoids, sides of which are arranged radially relative to the axis of rotor rotation. According to the invention, the stator is made in the form of two plates parallel to each other, circular windings are placed between plates, sections of circular windings in the bases of trapezoids are bent according to the arc, circular windings of one plate of the stator are inserted into circular windings of the other plate of the stator with formation of modules, besides, the distance l between sections of circular windings in bases of trapezoids exceeds the width b of the ring-shaped row of permanent magnets of the rotor.

EFFECT: increased evenness of torque on a shaft of a magnetoelectric motor and evenness of rotor rotation.

2 cl, 11 dwg

Description

The invention relates to the field of electrical engineering and can be used, in particular, in hybrid cars and electric vehicles, electromechanical, including automatic control systems, etc.

Known magnetoelectric torque motor containing two stators with toroidal magnetic circuits and coil windings, a disk rotor with permanent magnets with axial magnetization and alternating polarity, bearings with outer and inner rings and the rotor shaft, while one of the stators is rigidly mounted in the housing; the engine is equipped with a second disk rotor with a shaft similar to the first rotor, a fixed hollow axis with a hub and adjusting rings, while the rotors are coaxial and mounted for mutual rotation, the rotor shafts are hollow and placed on the outer rings of the bearings, which are worn on both ends fixed hollow axis, the first of the stators is fixedly mounted on the hub of the hollow axis, and the second stator is installed with the possibility of rotation relative to the first, the adjustment rings are placed on the fixed axis between the end faces of the hub and the inner ring of the bearings; toroidal magnetic cores are made with trapezoidal teeth and yoke, and the yoke height exceeds the height of the teeth by two stator winding heights, SU 1775807 A1.

The main disadvantage of this engine is the so-called “sticking” of the rotor due to the mutual attraction of the stator teeth and the permanent magnets of the rotor.

A magnetoelectric motor is also known, the rotor of which is made of two disks parallel to each other mounted on a shaft, on each of which there is an annular row of permanent magnets with alternating polarity, while the poles of the permanent magnets placed on one of the rotor disks are facing the opposite poles of the magnets, placed on another rotor disk, the stator is a plate in the form of a disk and is placed between the rotor disks with a gap relative to the shaft and is equipped with ring windings in the form of isos single trapezoid, the sides of which are located radially relative to the axis of rotation of the rotor; the stator has many spokes fan-shaped in a circle with slots; ring windings are placed in these spokes; The inner and outer rings, CN 101951106 (A), are used to fix the stator windings.

This engine is adopted as a prototype of the present invention.

Its disadvantage is the unevenness of the torque on the motor shaft and the resulting uneven rotation of the rotor. This is because the maximum interaction of the magnetic field of the stator winding and the permanent magnet of the rotor occurs when the symmetry axes of the ring winding and the magnet coincide. When the relative position of the indicated axes relative to each other changes, this interaction decreases.

The objective of the present invention is to increase the uniformity of torque on the shaft of the magnetoelectric motor and, accordingly, the uniformity of rotation of the rotor.

According to the invention, a magnetoelectric motor, the rotor of which is made of two disks parallel to each other mounted on a shaft, on each of which there is an annular row of permanent magnets with alternating polarity, while the poles of the permanent magnets placed on one of the rotor disks are facing the opposite poles of the magnets, placed on another rotor disk, the stator is placed between the rotor disks with a clearance relative to the shaft and is equipped with ring windings in the form of isosceles trapezoid, the sides to which are located radially relative to the axis of rotation of the rotor, the stator is made in the form of two plates parallel to each other, the ring windings are placed between the plates, the sections of the ring windings at the trapezoid bases are arched, the ring windings of one stator plate are inserted into the ring windings of the other stator plate with the formation of modules, moreover, the distance / between the sections of the annular windings in the bases of the trapezoid exceeds the width b of the annular row of permanent magnets; Between the annular stator windings there is an additional flat annular winding in the form of an isosceles trapezoid, the sides of which are located in the same plane between the sides of the other annular windings.

The applicant has not identified any technical solutions identical to the claimed, which allows us to conclude that the invention meets the condition of "Novelty."

Due to the implementation of the distinguishing features of the independent claim, the maximum interaction of the magnetic field of the annular stator windings with the permanent rotor magnets occurs twice as often in comparison with the prototype, since the symmetry axis of the permanent magnet coincides first with the symmetry axes of the ring windings on one of the stator plates, and then with symmetry axes of adjacent annular windings located on another stator plate, which smoothes out the uneven moment on the motor shaft. The implementation of the distinguishing features of the dependent claims provides an additional increase in the uniformity of the moment on the motor shaft.

The applicant has not identified sources of information that would contain information about the influence of the distinguishing features of the invention on the achieved technical result, which determines, according to the applicant, the invention meets the criterion of "inventive step".

The invention is illustrated by drawings, which depict:

figure 1 - engine elements in a perspective view;

figure 2 is a schematic illustration of the rotor and stator of the engine, a variant according to claim 1 of the claims, side view;

figure 3 is a section aa and with figure 2;

figure 4 - adjacent annular stator windings, paired with each other in a perspective view, (module) option according to claim 1 of the claims

5 — adjacent stator windings, plan view of FIG. 5;

Fig.6 is a section bB in Fig.5;

7 is the same as in figure 2, a variant according to claim 2 of the claims;

on Fig - section bb In Fig.7

fig. 9 - the same as in figure 4, a variant according to claim 2 of the formula

inventions;

figure 10 is a view in plan of figure 9;

figure 11 is a section GG in figure 10;

The magnetoelectric motor includes a rotor made of two disks 1 and 2 parallel to each other mounted on a shaft.

An annular row of 3 permanent magnets with alternating polarity is fixed on the disk 1, the same row of 4 permanent magnets is placed on the disk 2. The poles of the permanent magnets of row 3 are facing the opposite poles of the magnets of row 4.

The stator of the engine is made in the form of two plates 5 and 6 parallel to each other and placed between the disks 1 and 2 with a gap relative to the shaft 7. The stator is equipped with ring windings 8 in the form of isosceles trapezoid, the sides 9 of which are located radially relative to the axis of rotation of the rotor. Sections 10 and 11 of the annular windings 8 at the bases of the trapezoid are curved in an arc, while the annular windings 8 located on the stator plate 5 are inserted into the annular windings 8 on the stator plate 6 (Figs. 4, 9) and are filled with epoxy compound with the formation of single modules ; the distance l between the sections 10, 11 of the annular windings 8 exceeds the width b of the annular row of permanent magnets. The ring windings on the stator plate 5 are connected in series. The ring windings on the plate 6 are also interconnected.

In the embodiment of FIGS. 7-11, additional annular windings 12 in the form of an isosceles trapezoid are placed between the annular windings 8 of the stator. The sides 13 of the windings 12 are located in the same plane as the sides 9 of the windings 8. The windings 12 are connected in series.

Magnetoelectric motor operates as follows. In the embodiment according to claim 1, when applying alternating electric current to the windings 8 with a phase shift of 90 ° between the current in the windings on the plate 5 and the current in the windings on the plate 6 (two-phase current), or in the variant according to claim 2 with a phase shift of 120 ° between the windings 8 on the plate 5, the windings 12 and the windings 8 on the plate 6 (three-phase current), an interaction occurs between the magnetic fields of rows 3 and 4 of permanent magnets and magnetic fields created due to the flow of electric current in the stator windings. The result is a torque that provides rotation of the shaft 7 of the engine.

The maximum interaction of the magnetic field of the stator windings with the permanent rotor magnets occurs when the symmetry axes of the stator windings and the rotor magnets coincide.

Since the ring windings of one stator plate are inserted into the ring windings of another stator plate with a certain circumferential shift, the number of coincidences of the aforementioned axes of the stator windings with the symmetry axes of the rotor windings in each module is increased by two or, in the embodiment according to claim 2, by three times (in comparison with the prototype), which leads to an increase in the uniformity of torque on the motor shaft and its smoother operation.

For the manufacture of the device used conventional structural materials and factory equipment. This circumstance, according to the applicant, allows us to conclude that this invention meets the criterion of "Industrial applicability".

Claims (2)

1. A magnetoelectric motor, the rotor of which is made of two disks parallel to each other mounted on a shaft, on each of which there is an annular row of permanent magnets with alternating polarity, while the poles of the permanent magnets placed on one of the rotor disks are facing the opposite poles of the magnets, placed on another rotor disk, the stator is placed between the rotor disks with a clearance relative to the shaft and is equipped with ring windings in the form of isosceles trapezoid, the sides of which are located adially relative to the axis of rotation of the rotor, characterized in that the stator is made in the form of two plates parallel to each other, ring windings are placed between the plates, sections of the ring windings at the trapezoid bases are arched, the ring windings of one stator plate are inserted into the ring windings of another stator plate with the formation modules, and the distance l between the sections of the annular windings in the bases of the trapezoid exceeds the width b of the annular row of permanent magnets. 2. The magnetoelectric motor according to claim 1, characterized in that between the annular stator windings there is an additional flat annular winding in the form of an isosceles trapezoid, the sides of which are located in the same plane between the sides of the other annular windings.

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