NL2030429B1 - A Novel Axial Magnetic Field Brushless Synchronous Machine with Hybrid Excitation - Google Patents

A Novel Axial Magnetic Field Brushless Synchronous Machine with Hybrid Excitation Download PDF

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Publication number
NL2030429B1
NL2030429B1 NL2030429A NL2030429A NL2030429B1 NL 2030429 B1 NL2030429 B1 NL 2030429B1 NL 2030429 A NL2030429 A NL 2030429A NL 2030429 A NL2030429 A NL 2030429A NL 2030429 B1 NL2030429 B1 NL 2030429B1
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Netherlands
Prior art keywords
stator
rotor
excitation
core
rotor core
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Application number
NL2030429A
Other languages
Dutch (nl)
Inventor
Ai Wenhao
Li Yunxu
Deng Qiuling
Gong Xuecheng
Liu Ting
Wang Jiabao
Zhu Minghao
Liao Yuqi
Xie Qiuyue
Original Assignee
Hunan Inst Engineering
Shenzhen Tuobang Co Ltd
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Priority to NL2030429A priority Critical patent/NL2030429B1/en
Application granted granted Critical
Publication of NL2030429B1 publication Critical patent/NL2030429B1/en

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K19/00—Synchronous motors or generators
    • H02K19/16—Synchronous generators
    • H02K19/38—Structural association of synchronous generators with exciting machines
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/04—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for rectification
    • H02K11/042—Rectifiers associated with rotating parts, e.g. rotor cores or rotary shafts
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K19/00—Synchronous motors or generators
    • H02K19/02—Synchronous motors
    • H02K19/10—Synchronous motors for multi-phase current
    • H02K19/12—Synchronous motors for multi-phase current characterised by the arrangement of exciting windings, e.g. for self-excitation, compounding or pole-changing
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K19/00—Synchronous motors or generators
    • H02K19/16—Synchronous generators
    • H02K19/26—Synchronous generators characterised by the arrangement of exciting windings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H02K21/24—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets axially facing the armatures, e.g. hub-type cycle dynamos

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)

Abstract

Disclosed is an axial flux hybrid excitation brushless machine comprising a main generator, an AC exciter and a rotary rectifier. The main generator comprises a permanent magnet rotor disk and an excitation rotor disk co-axially mounted on the rotating shaft, and a stator disk comprising a stator core and windings installed on the frame. The PM rotor disk, the stator disk and the excitation rotor disk are arranged in parallel at intervals in turn; the AC exciter includes an AC exciter stator and rotor; the AC exciter stator is installed on the frame, and the AC exciter rotor and the rotary rectifier on the rotor core I. The hybrid excitation machine of that invention has simple and compact structure, high power density and efficiency, thus avoiding the risk of demagnetization of permanent magnet, and canceling the collector ring and brush.

Description

A Novel Axial Magnetic Field Brushless Synchronous Machine with Hybrid Excitation
TECHNICAL FIELD The invention belongs to the technical field of machine field, in particular to a novel hybrid excitation axial magnetic field brushless synchronous machine.
BACKGROUND Permanent magnet machine has simple structure, reliable operation, small volume, low loss and high efficiency, but it has the problem that the air gap magnetic field is difficult to adjust.
When the machine is required to operate in a wide speed range, it is necessary to apply continuous direct-axis current to weaken the magnetic field, which not only reduces the efficiency of the system, but also may lead to irreversible demagnetization of permanent magnets.
SUMMARY In view of the above problems existing in the prior art, the purpose of the present invention is to provide an axial magnetic field hybrid excitation brushless machine , which is a hybrid excitation machine with simple and compact structure, convenient connection and easy manufacture, and realizes high power density and high efficiency of the machine. The excitation magnetic circuit and the permanent magnetic circuit are relatively independent, avoiding the risk of demagnetization of permanent magnets. By adjusting the excitation current, the magnetic field of the machine can be conveniently adjusted, eliminating the slip ring and brush, and realizing the brushless excitation of the machine.
In order to achieve the above objective, the technical scheme adopted by the present invention is as follows: an axial magnetic field hybrid excitation brushless machine comprises a main generator, an AC exciter and a rotary rectifier installed in the frame, wherein the main generator includes a rotating shaft, and a permanent magnet rotor disk and an excitation rotor disk co-axially mounted on the rotating shaft, and a stator disk is fixed on the frame, wherein the stator disk comprises a stator core and stator windings. The permanent magnet rotor disk includes a rotor core Il and many permanent magnets installed on the rotor core II. The excitation rotor disk includes a rotor core | and excitation windings installed on the rotor core I. The rotor core |, the stator core and the rotor core II are arranged in parallel at intervals in turn. The AC exciter includes an AC exciter stator and rotor. The AC exciter stator is installed on the frame, and the AC exciter rotor and the rotary rectifier are installed on the rotor core |.
One end of the rotating shaft is located in the frame, and the other end is an extending end out of the frame.
As a further improvement of the above technical scheme:
the rotor core |, the stator core and the rotor core Il are sleeved on the rotating shaft in parallel at intervals and are arranged in sequence away from the extending end of the rotating shaft.
The excitation rotor disk also includes a plurality of rotor teeth and several groups of excitation windings.
The rotor core | is disc-shaped, and is fixedly sleeved on the rotating shaft.
The plurality of rotor teeth are installed on one side of the rotor core |, and are arranged in an annular array centring on the centre of the rotor core |, and each rotor tooth is wound with one excitation winding.
A plurality of rotor teeth are installed on the side of the rotor core | far away from the extending end of the frame.
The rotor core | is laminated by silicon steel sheets, and the rotor teeth are made of soft magnetic composite materials.
The stator disk also comprises a plurality of stator teeth, several groups of stator windings, the stator disk is disc-shaped, and is sleeved on the rotating shaft through a bearing, and the stator disk is fixedly connected with the frame, a plurality of stator teeth are installed on two sides of the stator core, on each side of the stator core, a plurality of stator teeth are arranged in an annular array centring on the centre of the stator core, and each stator tooth is wound with one stator winding.
The stator tooth is hexahedron, in which a set of opposite faces have the two same isosceles trapezoid arranged in parallel at intervals, namely the front face and the back face; the other set of opposite faces are two rectangles with different sizes, in which the short side of isosceles trapezoid is also the side of rectangle with smaller area, the long side of isosceles trapezoid is also the side of rectangle with larger area, and the faces with smaller area and larger area are the top face and the bottom face respectively; the last set of opposite faces are two identical rectangles, namely the left and right sides, and the hypotenuse of isosceles trapezoid is also the side of the left and right sides.
The front face or back face of the stator tooth is bonded to the stator core, and the top face of the stator tooth is closer to the centre of the stator core than the bottom face.
The left and right faces of the stator tooth are respectively provided with two notches, each notch is a groove, the length directions of the two notches are parallel to the long side of the face, the length of the notch is equal to the long side of the face, the two notches on the left face and on the right face are symmetrically arranged, and T-shaped magnetic slot wedges made of SMC material are embedded in the notches.
The rotor disk is disc-shaped, and is fixedly sleeved on the rotating shaft, a plurality of permanent magnets are installed on one side of the rotor core II, and the plurality of permanent magnets are arranged in an annular array centring on the centre of the rotor core II.
A plurality of permanent magnets are installed on the side of the rotor core Il near the extending end of the frame, and the polarities of adjacent permanent magnets on the same side of the rotor core Il are opposite. The AC exciter is a single-stator single-rotor axial magnetic field machine, which includes AC exciter stator and AC exciter rotor. The AC exciter stator is fixed on the inner side of the frame near one end of the rotor core |, the AC exciter rotor core and rotor core | of main generator are the same. And the AC exciter rotor winding and excitation winding of main generator are separately placed on both sides of the rotor core I. The rotary rectifier and the AC exciter rotor are placed on the same side of the rotor core I. The winding of the AC exciter stator is connected with the stator winding of main generator through frame, and the AC exciter rotor winding is connected with the excitation winding of main generator through rotary rectifier. The invention has the beneficial effects as follows. 1) The machine is a double-rotor single-stator axial magnetic field one with hybrid excitation, Two rotor disks are respectively excited with permanent magnets and concentrated windings. The stator disk of the AC exciter is fixed on the inner side of the end cover at one side of the frame. The rotor winding of the AC exciter and the rotary rectifier are installed on the side of the excitation rotor disk of the main generator. The rotor disk of the AC exciter, the excitation rotor disk of the main generator and the rotary rectifier are installed on one disk together. The machine has the advantages of simple and compact structure, light weight, convenient connection and easy manufacture, which realizes the high power density and high efficiency of the machine; the excitation magnetic and permanent magnetic circuit are relatively independent, which avoids the risk of demagnetization of permanent magnet. 2) The combination of permanent magnet excitation and electric excitation has the advantages of easy adjustment of the magnetic field of the electric excitation machine and high efficiency of the permanent magnet machine; by adjusting the excitation current, the magnetic field of the machine can be conveniently adjusted, so that the machine has good running characteristics in a wide speed range. 3) The single-stator single-rotor axial magnetic field AC exciter is matched with the rotary rectifier device, eliminating the collector ring and brush, realizing the brushless excitation of the machine. Compared with the traditional brushless excitation scheme of radial magnetic field machine, the machine has compact structure, light weight, convenient connection and higher machine utilization rate.
BRIEF DESCRIPTION OF THE FIGURES Fig. 1 is a structural diagram of one embodiment of the present invention; Fig. 2 is a schematic view of the stator tooth structure of one embodiment of the present invention;
Fig. 3 is a structural diagram of a permanent magnet rotor disk according to one embodiment of the present invention; Fig. 4 is a structural diagram of a stator disk according to one embodiment of the present invention.
DESCRIPTION OF THE INVENTION Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.
For convenience of description, spatial relative terms such as "on ", "above", "on the upper surface of", "upper" can be used here to describe the spatial positional relationship between one device or feature and other devices or features as shown in the figure. It should be understood that the spatial relative terms are intended to include different orientations in use or operation other than those described in the figures of the device. For example, if the devices in the drawing are inverted, the devices described as "above other devices or configurations" or "above other devices or configurations" will be positioned as "below other devices or configurations” or "below other devices or configurations” later. Thus, the exemplary term "above" can include two orientations: "above" and "below". The device can also be positioned in other different ways (rotated by 90 degrees or in other orientations), and the spatial relative description used here should be explained accordingly.
An axial magnetic field hybrid excitation brushless machine, as shown in FIGS. 1 to 4, comprises a main generator, an AC exciter and a rotary rectifier 16 installed in the frame 12.
The main generator is a single-stator double-rotor axial magnetic field main generator, which includes a stator disk, a permanent magnet rotor disk, an excitation rotor disk and a rotating shaft 14. One end of the rotating shaft 14 is located in the frame 12, and the other end is an extending end out of the frame 12. One end of the frame 12 is connected with the rotating shaft 14 through a bearing. The excitation rotor disk, the stator disk and the permanent magnet rotor disk are located in the frame 12.
The excitation rotor disk includes a rotor core | (1), several groups of excitation windings 2 and a plurality of rotor teeth 3. The rotor core | (1) is disc-shaped and is fixedly sleeved on the rotating shaft 14; in other words, the rotor core | (1) and the rotating shaft 14 are co-rotatably arranged, that is, the circumferential side of the rotor core | (1) does not contact with the frame 12, but freely overhangs. The rotor core | (1) is formed by laminating silicon steel sheets. A plurality of rotor teeth 3 are installed on one side of the rotor core | (1), preferably, on the side of the rotor core | (1) away from the extending end of the frame 12. A plurality of rotor teeth 3 are arranged in an annular array centring on the centre of rotor core | (1). Each rotor tooth 3 is wound with one excitation winding 2. The rotor teeth 3 are made of soft magnetic composite material.
The stator disk includes a stator core 4, a plurality of stator teeth 7 and several groups of stator windings 5. The stator core 4 is disc-shaped, and is sleeved on the rotating shaft 14 5 through a bearing 13, in other words, the stator core 4 and the rotating shaft 14 are not co- rotatably arranged. Specifically, the circumferential side of the stator core 4 is fixedly connected with the frame 12. A plurality of stator teeth 7 are installed on both sides of the stator core 4. On each side of the stator core 4, a plurality of stator teeth 7 are arranged in an annular array centring on the centre of the stator core 4. Each stator tooth 7 is wound with one stator winding
5. The stator winding 5 in both sides of the stator core 4 are connected in series or in parallel, specifically designed according to specific application scenarios.
As shown in Fig. 2, the stator tooth 7 is hexahedron, in which a set of opposite faces have two same isosceles trapezoid arranged in parallel at intervals, namely the front face and the back face; the other set of opposite faces are two rectangles with different sizes, in which the short side of isosceles trapezoid is also the side of rectangle with smaller area, the long side of isosceles trapezoid is also the side of rectangle with larger area, and the faces with smaller area and larger area are the top face and the bottom face respectively; the last set of opposite faces are two identical rectangles, namely the left and right sides, and the hypotenuse of isosceles trapezoid is also the side of the left and right sides. When a plurality of stator teeth 7 are arranged in an annular array on the side of the stator core 4, the front face or back face surface (isosceles trapezoid) of the stator teeth 7 is bonded to the stator core 4, and the top face of the stator teeth 7 is closer to the centre of the stator core 4 than the bottom surface.
The left and right sides of the stator tooth 7 are respectively provided with two notches 6, grooves, and the length directions of the two notches 6 are parallel to the long sides of their faces, and the length of the notches 6 is equal to the long sides of their faces. Two notches 6 on the left and on the right are symmetrically arranged. Preferably, the two notches 6 on the left or right are close to the two isosceles trapezoids respectively. notches 6 of the stator tooth 7 are closed by magnetic slot wedges-made of SMC material. Specifically, the magnetic slot wedges are made into a T-shape and then embedded in the notches 6.
When the stator winding 5 is wound on the stator tooth 7, the stator winding 5 surrounds the top, left, bottom and right sides of the stator tooth 7 in turn. The stator winding 5 is located between two notches 6 on the left or right.
Cogging torque is the torque generated by the mutual attraction between the permanent magnet and the stator slot when there is no current in the stator winding of the permanent magnet machine. Large cogging torque will cause speed fluctuation, resulting in larger vibration and noise. Embedding the magnetic slot wedges in notches 6 can reduce the cogging torque of the machine and make the machine run smoothly.
The SMC material used is obtained by pressing metal powder. High-purity iron powder with good magnetic properties and resin adhesive are mixed together, and after treatment, a product with high density, high strength and excellent compressibility is formed.
The permanent magnet rotor disk includes a rotor core Il 9 and a plurality of permanent magnets 8. The rotor core II (9) is disc-shaped, and is fixedly mounted on the rotating shaft 14, in other words, the rotor core Il (9) and the rotating shaft 14 are arranged to rotate together, that is, the circumferential side of the rotor core II (9) does not contact with the frame 12, but is freely suspended. The rotor core II (9) is formed by laminating silicon steel sheets. A plurality of permanent magnets 8 are installed on one side of the rotor core Il (9), preferably, near the extending end of the frame 12. A plurality of permanent magnets 8 are arranged in an annular array centring on the centre of the rotor core II 9). Adjacent permanent magnets 8 on the same side of the rotor core II (9) have opposite polarities. The permanent magnet 8 is attached to the rotor core II (9) by sticking.
The rotor core 11, the stator core 4 and the rotor core II 9 are sleeved on the rotating shaft 14 at intervals in parallel and arranged in turn in the direction away from the extending end of the rotating shaft 14.
AC exciter is a single-stator single-rotor axial magnetic field machine, which includes AC exciter stator 10 and AC exciter rotor 11. The AC exciter stator 10 is fixed on the inner side of one end of the frame 12. Specifically,-close to the rotor core | (1). The AC exciter rotor 11 is installed on one side of the rotor core |, and the AC exciter rotor 11 and the excitation winding 2 of the main generator are separately placed on both sides of the rotor core |, that is, the AC exciter stator 10 and the AC exciter rotor 11 are oppositely arranged at a parallel interval.
The rotary rectifier 16 and the AC exciter rotor 11 are placed on the same side of the rotor core |, both of which are installed back to back with the excitation winding 2 of the main generator.
Based on the above structure, the permanent magnet rotor disk and the excitation rotor disk form two independent parallel hybrid excitation magnetic fields. When the air gap magnetic flux generated by the excitation rotor is in the same direction as the magnetic flux generated by the permanent magnet rotor, the induced potential on the stator winding 5 is the sum of the induced potentials generated by the two magnetic fluxes. On the contrary, when the air gap magnetic flux generated by the excitation rotor is opposite to the magnetic flux generated by the permanent magnet rotor, the induced potential on the stator winding 5 is the difference between the induced potentials generated by the two parts of magnetic flux, that is, the induced potentials generated by the two parts of magnetic flux are subtracted, which is equivalent to achieving the effect of field weakening. Therefore, by adjusting the magnitude and direction of the excitation current, the field weakening can be realized without affecting the permanent magnet 8, which greatly reduces the risk of irreversible demagnetization of the permanent magnet 8 and further improves the reliability of the electric machine.
Since the AC exciter rotor 11 is mounted on rotor core | (1) are the same, when the machine rotates, the AC exciter rotor 11 and the rotary rectifier 16 rotate together, thus eliminating the slip ring and brush and realizing brushless excitation.
The winding of the AC exciter stator 10 is connected with the stator winding 5 of the main generator through the frame 12. The AC exciter rotor 11 is connected with the excitation winding 2 of the main generator through the rotary rectifier 16.
The rotary rectifier 16 is used to convert alternating current from the exciter into direct current, which is then transmitted to the excitation winding 2 of the main generator. That is, the current of the excitation winding 2 is obtained by rectifying the current generated by the AC exciter through the rotary rectifier 16.
Finally, it is necessary to explain here that the above embodiments are only used to further explain the technical scheme of the present invention in detail, and can not be understood as limiting the scope of protection of the present invention. Some immaterial improvements and adjustments made by technicians in the field according to the above contents of the present invention all belong to the scope of protection of the present invention.

Claims (10)

CONCLUSIESCONCLUSIONS 1. Een borstelloze inrichting voor hybride axiaal magnetisch veld - excitatie, welke inrichting een hoofdgenerator, een wisselstroom-excitatie-inrichting en een in een frame (12) bevestigde roterende gelijkrichter (16) omvat; waarbij — de hoofdgenerator een draaibare as (14), een rotorschijf met permanente magneet en een excitatie-rotorschijf die gezamenlijk draaibaar op de roterende as (14) zijn geschoven, en een op het frame (12) bevestigde statorschijf omvat; — de statorschijf een statorkern (4) omvat waarbij statorwikkelingen (5) op de statorkern (4) zijn geplaatst, de rotorschijf met permanente magneet een rotorkern II (2) omvat en permanente magneten (8) op de rotorkern Il (9) zijn geplaatst, de excitatierotorschijf een rotorkern | (1) omvat waarbij excitatiewikkelingen (2) op de rotorkern | (1) zijn geplaatst, en de rotorkern | (1), de statorkern (4) en de rotorkern II (9) parallel en op afstand van elkaar zijn geplaatst; — de wisselstroombekrachtiger een wisselstroomexcitatie-stator (10) en een wisselstroomexcitatie-rotor (11) omvat, waarbij de wisselstroomexcitatie-stator (10) op het frame (12) is gemonteerd, en de wisselstroomexcitatie-rotor (11) en de roterende gelijkrichter (16) op de rotorkern | (1) zijn gemonteerd.A brushless hybrid axial magnetic field excitation device comprising a main generator, an alternating current excitation device and a rotary rectifier (16) mounted in a frame (12); wherein - the main generator comprises a rotatable shaft (14), a permanent magnet rotor disk and an excitation rotor disk jointly rotatably slid on the rotating shaft (14), and a stator disk mounted on the frame (12); - the stator disc comprises a stator core (4) with stator windings (5) placed on the stator core (4), the permanent magnet rotor disc comprises a rotor core II (2) and permanent magnets (8) are placed on the rotor core II (9) , the excitation rotor disk has a rotor core | (1) where excitation windings (2) on the rotor core | (1) are installed, and the rotor core | (1), the stator core (4) and the rotor core II (9) are arranged parallel and spaced apart; - the alternating current exciter comprises an alternating current excitation stator (10) and an alternating current excitation rotor (11), the alternating current excitation stator (10) being mounted on the frame (12), and the alternating current excitation rotor (11) and the rotary rectifier ( 16) on the rotor core | (1) are mounted. 2. De borstelloze inrichting volgens conclusie 1, waarbij een uiteinde van de draaibare as (14) in het frame (12) is gelegen, en het andere uiteinde uit het frame (12) uitsteekt.The brushless device of claim 1, wherein one end of the rotatable shaft (14) is located in the frame (12) and the other end protrudes from the frame (12). 3. De borstelloze inrichting volgens conclusie 2, waarbij de rotorkern | (1), de statorkern (4) en de rotorkern II (9) op onderlinge afstand parallel op de draaibare as (14) zijn geschoven en van het uitstekende uiteinde van de draaibare as (14) zijn afgekeerd.The brushless device of claim 2, wherein the rotor core | (1), the stator core (4) and the rotor core II (9) are spaced apart parallel on the rotatable shaft (14) and facing away from the protruding end of the rotatable shaft (14). 4. De borstelloze inrichting volgens conclusie 3, waarbij de excitatierotorschijf voorts een aantal rotortanden (3), en diverse groepen excitatiewikkelingen (2) omvat; waarbij de rotorkern | {1) schijfvormig en is vast is gemonteerd op de draaibare as (14), en een aantal rotortanden (3) aan een zijde van de rotorkern | (1) zijn geplaatst, en in een ringvormige reeks gecentreerd om het centrum van de rotorkern | (1) zijn gerangschikt, waarbij elke rotortand (3) is gewikkeld met een excitatiewikkeling (2).The brushless device according to claim 3, wherein the excitation rotor disk further comprises a plurality of rotor teeth (3), and several groups of excitation windings (2); where the rotor core | {1) disc-shaped and fixedly mounted on the rotatable shaft (14), and a number of rotor teeth (3) on one side of the rotor core | (1) and centered in an annular array about the center of the rotor core | (1) are arranged, each rotor tooth (3) being wound with an excitation winding (2). 5. De borstelloze inrichting volgens conclusie 3, waarbij de statorschijf verder een aantal statortanden (7) en diverse groepen statorwikkelingen (5) omvat, waarbij de statorkern {4} is schijfvormig is en onder tussenkomst van lagers (13) op de roterende as (14) is geschoven, en vast is verbonden met het frame (12), waarbij een aantal statortanden (7) aan twee kanten van de statorkern (4) zijn geïnstalleerd; waarbij aan elke zijde van de statorkern (4) een aantal statortanden (7) in een ringvormige reeks gecentreerd om het centrum van de stator kern (4) zijn gerangschikt, waarbij elke statortand (7) is gewikkeld met een statorwikkeling (5).The brushless device according to claim 3, wherein the stator disc further comprises a plurality of stator teeth (7) and several groups of stator windings (5), the stator core {4} being disk-shaped and mounted on the rotating shaft (13) through bearings (13). 14) is slid, and fixedly connected to the frame (12), with a plurality of stator teeth (7) installed on two sides of the stator core (4); wherein on each side of the stator core (4) a plurality of stator teeth (7) are arranged in an annular array centered about the center of the stator core (4), each stator tooth (7) being wound with a stator winding (5). 6. De borstelloze inrichting volgens conclusie 5, waarbij de statortanden (7) hexaëders zijn, waarbij een stel tegenover elkaar liggende vlakken, te weten het voorvlak en het achtervlak, twee identieke gelijkbenige trapezoïden zijn, op onderlinge afstand parallel gerangschikt; waarbij het andere stel tegenover elkaar liggende vlakken twee rechthoeken van verschillende grootte zijn, waarbij de korte zijde van de gelijkbenige trapeziums ook de zijde van de rechthoek met de kleinste oppervlakte is, en de lange zijde van de gelijkbenige trapeziums ook de zijde van de rechthoek met de grootste oppervlakte is, waarbij de vlakken met de kleinste oppervlakte en de grootste oppervlakte respectievelijk de bovenzijde en de onderzijde zijn; waarbij het laatste stel tegenover elkaar liggende vlakken, te weten de linkerzijde en de rechterzijde, twee identieke rechthoeken zijn; waarbij de hypotenusa van het gelijkbenige trapezium tevens de zijde van de linkerzijde en de rechterzijde vormt; waarbij de voorkant of achterkant van de statortand (7) is gebonden aan de stator kern (4), en de bovenzijde van de statortand (7) dichter bij het centrum van de stator kern (4) is gelegen dan de onderzijde.The brushless device according to claim 5, wherein the stator teeth (7) are hexahedra, wherein a pair of opposing faces, namely the front face and the back face, are two identical isosceles trapezoids arranged in parallel spaced apart relationship; the other set of opposite faces being two rectangles of different sizes, where the short side of the isosceles trapezoids is also the side of the rectangle with the smallest area, and the long side of the isosceles trapezoids is also the side of the rectangle with is the largest area, where the least area and largest area areas are the top and bottom respectively; wherein the last set of opposite faces, namely the left side and the right side, are two identical rectangles; the hypotenuse of the isosceles trapezium also forming the side of the left side and the right side; wherein the front or back of the stator tooth (7) is bonded to the stator core (4), and the top of the stator tooth (7) is closer to the center of the stator core (4) than the bottom. 7. De borstelloze inrichting volgens conclusie 8, waarbij twee inkepingen (8) zijn aangebracht aan respectievelijk de linker- en rechterzijde van de statortand (7), en de inkepingen (6) groeven zijn, en de lengterichtingen van de twee inkepingen (6) evenwijdig aan de lange zijden van hun vlakken verlopen, en de lengterichtingen van de inkepingen (8) gelijk zijn aan de lange zijden van hun vlakken, waarbij twee inkepingen (6) aan de linkerzijde en aan de rechterzijde symmetrisch zijn gerangschikt, en T-vormige magnetische sleufwiggen van SMC-materiaal in de inkepingen (6) zijn ingebed.The brushless device according to claim 8, wherein two notches (8) are provided on the left and right sides of the stator tooth (7), respectively, and the notches (6) are grooves, and the longitudinal directions of the two notches (6) parallel to the long sides of their faces, and the longitudinal directions of the notches (8) are equal to the long sides of their faces, two notches (6) on the left and on the right being arranged symmetrically, and T-shaped magnetic slotted wedges of SMC material are embedded in the notches (6). 8. De borstelloze inrichting volgens conclusie 3, die permanente magneten (8) omvat, waarbij de rotorkern Il (9) schijfvormig is, en vast op de roterende as (14) is gemonteerd, waarbij een aantal permanente magneten (8) aan een zijde van de rotorkern Il (9) zijn geïnstalleerd, en in een ringvormige reeks gecentreerd om het middelpunt van de rotorkern II (9) zijn gerangschikt.The brushless device according to claim 3, comprising permanent magnets (8), the rotor core II (9) being disk-shaped, and fixedly mounted on the rotating shaft (14), a plurality of permanent magnets (8) on one side of the rotor core II (9) are installed, and are arranged in an annular array centered about the center of the rotor core II (9). 9. De borstelloze inrichting volgens conclusie 8, waarbij een aantal permanente magneten (8) aan de zijde van de rotorkern II (9) nabij het uit het frame (12) uitstekende einde geïnstalleerd is, en de polariteiten van de aangrenzende permanente magneten (8) aan dezelfde zijde van de rotorkern II {9) tegengesteld zijn.The brushless device according to claim 8, wherein a plurality of permanent magnets (8) are installed on the side of the rotor core II (9) near the end protruding from the frame (12), and the polarities of the adjacent permanent magnets (8 ) on the same side of the rotor core II {9) are opposite. 10. De borstelloze inrichting volgens conclusie 3, waarbij de wisselstroomexcitator een één- stator-één-rotor-inrichting voor hybride axiaal magnetisch veld - excitatie is, die een wisselstroomexcitatie-stator (10) en een wisselstroomexcitatie-rotor (11) omvat, waarbij de wisselstroomexcitatie-stator (10) bevestigd aan de binnenzijde van het frame (12) nabij een uiteinde van de rotorkern | (1) is bevestigd, en de wisselstroomexcitatie-rotor (11) aan een zijde van de rotorkern | nabij de wisselstroomexcitatie-stator (10) is geïnstalleerd, en de wisselstroomexcitatie-rotor (11) en de excitatiewikkelingen van de hoofdgenerator (2)The brushless device of claim 3, wherein the alternating current exciter is a one-stator-one-rotor hybrid axial magnetic field excitation device comprising an alternating current excitation stator (10) and an alternating current excitation rotor (11), wherein the AC excitation stator (10) attached to the inside of the frame (12) near an end of the rotor core | (1) is attached, and the AC excitation rotor (11) on one side of the rotor core | installed near the AC excitation stator (10), and the AC excitation rotor (11) and the excitation windings of the main generator (2) afzonderlijk aan beide zijden van de rotorkern | zijn geplaatst.separately on both sides of the rotor core | are placed.
NL2030429A 2022-01-05 2022-01-05 A Novel Axial Magnetic Field Brushless Synchronous Machine with Hybrid Excitation NL2030429B1 (en)

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