WO2014074008A1

WO2014074008A1 - Electromagnetic motor

Info

Publication number: WO2014074008A1
Application number: PCT/RU2012/001055
Authority: WO
Inventors: Сергей Михайлович ЕСАКОВ; Михаил Сергеевич ЕСАКОВ; Анатолий Юрьевич ВЕЛИКО-ИВАНЕНКО
Original assignee: Esakov Sergej Mikhailovich; Esakov Mikhail Sergeevich; Veliko-Ivanenko Anatolij Yurievich
Priority date: 2012-11-06
Filing date: 2012-12-12
Publication date: 2014-05-15
Also published as: RU2515999C1

Abstract

The invention relates to the art of electrical engineering and can be used, in particular, in hybrid automobiles and electric automobiles and in electromechanical, inter alia automatic, control systems, etc. In the electromagnetic motor, the rotor of which comprises a disk that is fastened to a shaft and has an annular series of permanent magnets of alternate polarity mounted thereon, and the stator of which comprises two parallel plates between which stator windings are disposed, the plates of the stator are provided with cores of electrical steel on which the stator windings are disposed, the cores are in the form of rings with projections on the mutually facing surfaces thereof, the width B of a projection constitutes half of the width C of a permanent magnet, the projections on one of the cores are circumferentially offset from the projections on the other core by half of the width C of a permanent magnet, and the rotor disk is located between the stator winding cores. This increases the capacity of the motor without increasing the dimensions thereof.

Description

Magnetoelectric motor

Technical field

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.

State of the art

A magnetoelectric torque motor is known, comprising 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 a 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 installed with the possibility of mutual rotations, the rotor shafts are hollow and placed on the outer rings of the bearings, which are mounted on the fixed hollow axis from the two ends, the first of the stators is fixedly mounted on the hub of the hollow axis, and the second stator is rotatably mounted relative to the first, the adjusting rings are placed on the fixed axis between end surfaces of the hub and inner rings of 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 1775807A1.

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; for fixing the windings the stator are inner and outer rings, CN 101951106 (A).

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.

Known magnetoelectric motor, the rotor of which contains mounted on the shaft parallel to each other discs, on each of which is placed an annular series of permanent magnets with alternating polarity, while the poles of permanent magnets placed on one of the rotor disks are facing opposite poles of magnets placed on the other the 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 diagonal with respect 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 in the trapezoid bases are curved in an arc, the ring windings of one stator plate are inserted into the ring windings of another stator plate with the formation of modules, and the distance / between the sections of the annular windings in the trapezoid bases exceeds the width b of the annular row of constants 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, RU121404U1.

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

The disadvantage of the prototype is the large distance between the poles of the opposite permanent magnets placed on the rotor disks. In this regard, the magnetic field strength in the gap where the stator windings are located sharply decreases depending on the width of this gap, which is determined by the width of the stator. As a result, engine power drops. Disclosure of invention

The objective of the present invention is to increase engine power while maintaining its size.

According to the invention, a magnetoelectric motor, the rotor of which contains a disk mounted on the shaft, on which an annular row of permanent magnets with alternating polarity is placed, and the stator contains two plates parallel to each other, between which the stator windings are placed, the stator plates are equipped with cores made of electrical steel, on which stator windings, cores are made in the form of rings, protrusions are made on the surfaces facing each other, the protrusion width B is half the width C of the permanent magnet, the protrusions of one of the cores are circumferentially offset relative to the protrusions of the other core by half the width C of the permanent magnet, while the rotor disk is located between the cores of the stator windings.

The applicant has not identified any technical solutions identical to the claimed one, which allows us to conclude that the invention meets the condition of “Novelty” (“N”).

The implementation of the distinguishing features of the invention provides an important technical result, consisting in the following. In the present invention, the magnetic field strength affecting the engine power is determined by the total gap between the permanent rotor magnets and the protrusions of the stator winding cores. Each of these clearances may not exceed 0.5 mm and depends solely on the accuracy of the manufacture and assembly of the mechanical elements of the engine.

In the prototype device, the gap value determining the magnetic field strength depends on the thickness of the stator windings located in this gap and is practically not less than 10 mm.

The claimed technical solution allows to reduce the gap, which determines the magnetic field strength by at least 10 times and thereby dramatically increase the power of the magnetoelectric motor while maintaining its dimensions.

The above circumstances determine, according to the applicant, the compliance of the present invention with the condition of patentability "Inventive step"("IS"). Brief Description of the Drawings

The invention is further explained in the detailed description of examples of its implementation with reference to the drawings, which depict:

in FIG. 1 is a front view;

in FIG. 2 - section aa in figure 1;

in FIG. 3 - section BB in figure 1;

in FIG. 4 - a fragment of the core of the stator windings in

axonometry.

The best embodiment of the invention

The magnetoelectric motor includes a rotor comprising a disk 2 mounted on a shaft 1 and made of duralumin. On the disk 2 there is an annular row of permanent magnets 3 of rectangular shape with alternating polarity (figure 1). Magnets 3 are located equidistant relative to each other. The stator of the motor contains two parallel plates 4, 5, made of a non-magnetic material, in particular, an aluminum alloy. The plates 4, 5 are interfaced with the shaft 1 by means of bearings 6, 7. On the stator plates 4, 5, cores of electrical steel are made in the form of two rings 8, 9, on the surfaces facing each other, for example, by milling, the protrusions 10, 1 1, respectively. The width B of each protrusion is half the width C permanent magnet 3. The protrusions 10 on the ring 8 are offset from the protrusions 1 1 on the ring 9 by half the width of the permanent magnet 3 (C / 2). The gaps between the permanent magnets 3 are filled with an epoxy compound 12. At the periphery, the permanent magnets 3 are pulled together by a banding tape 13. Stator windings 14 are placed on the cores of electrical steel. In the example shown in the drawings, the windings 14 are placed on the protrusions 10, 11 of the cores, it is also possible to place the windings 14 on the cores between the protrusions 10, 1 1, however, the latter is somewhat more complicated technologically. The windings 14 are interconnected in series.

Magnetoelectric motor operates as follows. When applying alternating electric current to the stator windings 14, an interaction occurs between the magnetic fields of the permanent magnets 3 and the magnetic fields created due to the flow of electric current in the windings 14. As a result, a torque arises, which rotates the shaft 1 of the rotor. Since the cores are single elements - rings with protrusions, and the surfaces of the protrusions are processed in one installation of the core and the processing tool, the surface of the protrusions of each core are strictly in the same plane. As a result of this, a minimum and uniform gap is provided between the stator winding cores and the surfaces of the permanent magnets 3. Since the width B of the protrusion is half the width C of the permanent magnet of the rotor and the protrusions of one of the cores are circumferentially displaced relative to the protrusions the other core is half the width of the permanent magnet, the effect of "sticking of the rotor" is excluded, which makes it difficult to start the engine and causes noise during its operation. This is because the magnetic field of the cores mounted on the stator plate 4 balances the magnetic field of the cores located on the stator plate 5. As a result, for any position of the rotor, the total component of the forces acting on it is practically equal to zero. Industrial applicability

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" ("IA").

Claims

Claim

A magnetoelectric motor, the rotor of which contains a disk mounted on the shaft, on which an annular row of permanent magnets with alternating polarity is placed, and the stator contains two plates parallel to each other, between which the stator windings are placed, For example, the stator plates are equipped with cores made of electrical steel, on which the stator windings are placed, the cores are made in the form of rings, protrusions are made on the surfaces facing each other, the width of the protrusion is polo the width of the permanent magnet C, the protrusions of one of the cores are circumferentially offset relative to the protrusions of the other core by half the width C of the permanent magnet, while the rotor disk is located between the cores of the stator windings.