Self-starting reluctance motor

Abstract

A self-starting reluctance motor, comprising a rotor (10) through which a plurality of first slots (11), a plurality of second slots (12) and a plurality of third slots (13) are formed, the first slots (11) being all perpendicular to the q-axis, the second slots (12) and the third slots (13) being all parallel to the d-axis, and the second slots (12) and the third slots (13) extending in sequence from both ends of the first slots (11); magnetic barrier regions among the first slots (11), the second slots (12) and the third slots (13) allow for formation of a plurality of magnetic flux paths (102) in the rotor (10); trapezoidal holes (14) are formed through the rotor (10) along the q-axis at the outer periphery of the rotor (10); each of the third slots (13) and the trapezoidal holes (14) is internally provided with a conductive body (15), the conductive bodies (15) being annularly arranged at the outer periphery of the rotor (10); at the third slots (13) and the trapezoidal holes (14), holes are formed in the surface of the rotor, so as to form notch slots (131, 141); a reinforcing surface layer (10A) is arranged around the outer periphery of the rotor (10) and covers the notch slots (131, 141). Thus, both a self-starting capability and motor efficiency are ensured.

Description

Self-starting reluctance motor

[0001] The present application relates to a reluctance motor, in particular to a self-starting reluctance motor with starting ability and high motor efficiency by improving the rotor structure. BACKGROUND

[0002] The reluctance motor is a motor that uses the difference in reluctance torque generated by the motor direct axis (d-axis) and the cross axis (q-axis) to drive the rotor to rotate the shaft, and its physical nature is that the magnetic force line will form a closed loop along the path with the smallest magnetic resistance, thereby driving the rotor to run. The self-starting reluctance motor achieves the purpose of self-starting by filling the rotor with conductive strips to generate asynchronous torque, overcoming the problem of high cost of using a controller to drive the conventional motor. Compared with the conventional motor, the self-starting reluctance motor has low motor loss and high running efficiency, and can stably achieve constant speed running under high load, and has the advantages of low cost and no problem of permanent magnet demagnetization. TECHNICAL PROBLEM

[0003] It is not difficult to find that the above-mentioned conventional structure still has some shortcomings, the main reasons are as follows: the reluctance motor without filling the conductive strip has high motor efficiency, but does not have self-starting ability, although the controller can also start, but the cost of the controller is too high, resulting in that the reluctance motor does not have commercial value, and after filling the conductive strip, although it has self-starting function, the magnetic conductivity of the conductive strip will reduce the motor efficiency, so that the output power of the reluctance motor is too low to effectively replace the conventional motor. In view of the above situation, the present application improves the structure of the rotor to obtain a reluctance motor with self-starting and high motor efficiency. TECHNICAL SOLUTION

[0004] The purpose of the present application is to provide a self-starting reluctance motor.

[0005] The purpose of the present application is achieved by the following technical scheme:

[0006] A self-starting reluctance motor includes a rotor having a cylindrical shape with a rotating shaft penetrating through a center of the rotor, the rotor being symmetrical about a q-axis with a plurality of first slots, a plurality of second slots and a plurality of third slots penetrating through the rotor, the first slots being perpendicular to the q-axis, the second slots and the third slots being parallel to a d-axis, and the second slots and the third slots sequentially extending at both ends of the first slots, the rotor being formed with a plurality of magnetic flux paths by magnetic barrier intervals of the first slots, the second slots and the third slots, wherein the q-axis at an outer periphery of the rotor is penetrated by a trapezoidal hole, the third slots and the trapezoidal hole are provided with a conductor, the conductor is annularly formed at the outer periphery of the rotor, the rotor is formed with an outer ring at the outer periphery and adjacent to the third slots and the trapezoidal hole, the third slots and the trapezoidal hole are cut through the outer ring to form a gap slot, a reinforced surface layer is provided around the outer periphery of the rotor and covers the gap slot, the reinforced surface layer is made of a non-conductive composite material, a stator is provided at the outer periphery of the rotor and is spaced apart from the reinforced surface layer by an air gap, and the stator is annularly provided with a plurality of magnetic poles, so that the magnetic flux passing through the air gap is around the magnetic poles and the magnetic flux paths.

[0007] In one embodiment, the rotor is fixed by a plurality of iron core pieces, the first slots and the second slots of each of the iron core pieces are communicated with each other and are spaced apart by a first bridge, the second slots and the third slots are not communicated with each other, the first bridge and the reinforced surface layer improve the structural strength of the rotor, and the conductor is formed in the third slots and the trapezoidal hole by a casting filling method.

[0008] In one embodiment, the rotor is fixed by a plurality of iron core pieces, the second slots and the third slots are not communicated with each other and are spaced apart by a first bridge, each of the iron core pieces is formed with an extension slot at both ends of the first slots and towards the second slots, and the second slots and the extension slots are spaced apart by a second bridge, the first bridge, the second bridge and the reinforced surface layer improve the structural strength of the rotor, the conductor is formed in the third slots and the trapezoidal hole by a casting filling method, and the second slots are formed with a conductive strip by a casting filling method, and a plurality of the conductive strips are annularly arranged on the inner side of the conductor.

[0009] In one embodiment, the rotor is fixed by overlapping a plurality of core pieces, and the core pieces are formed with a plurality of engaging portions, and the engaging portions are convex on one side and concave on the other side, so that a plurality of core pieces are fixed by engaging each other with the engaging portions to form a core round plate, and the plurality of core round plates are overlapped and misaligned by 1-2 degrees of rotation around the same axis, so that the conductive body can be formed in the third slot and the trapezoidal hole by casting filling without being affected, and the contact area of the conductive body, the third slot and the trapezoidal hole is effectively increased.

[0010] In one embodiment, the reinforced surface layer is a continuous carbon fiber ring formed by dry coating or wet winding method.

[0011] In one embodiment, a shrinkable film is further provided between the outer periphery of the rotor and the reinforced surface layer, and the shrinkable film shrinks to cover the rotor, so that the reinforced surface layer and the rotor are more tightly connected without gaps, and the shrinkable film can be any one of PVC shrinkable film, POE shrinkable film, OPS shrinkable film or PET shrinkable film.

[0012] In one embodiment, a shrinkable film is further provided between the outer periphery of the reinforced surface layer, and the shrinkable film shrinks to cover the reinforced surface layer to block water vapor, and the shrinkable film can be any one of PVC shrinkable film, POE shrinkable film, OPS shrinkable film or PET shrinkable film.

[0013] In one embodiment, the upper base of the trapezoidal hole faces the direction of the rotating shaft, and the volume of the trapezoidal hole is 2-4 times the volume of the third slot, and the width of the magnetic path of the rotor at the d-axis is twice the width of the magnetic path at the q-axis.

[0014] In one embodiment, two fixed plates are further included, and the two fixed plates are respectively fixed at the two ends of the rotor in the axial direction, and the fixed plate is provided with a plurality of fixed slots corresponding to the first slot, and a plurality of strip-shaped bodies are provided between the two fixed plates, and the strip-shaped bodies pass through the fixed slots of the two fixed plates and the corresponding first slots at the same time.

[0015] In one embodiment, the rotor is connected to a clutch, the clutch comprising an inner shaft, a plurality of brake members, a plurality of elastic bodies, and an outer shaft, the inner shaft being sleeved and fixed to the rotating shaft, and the inner shaft extending radially with a plurality of limiting rods, the brake members being formed with a limiting groove in the middle, the plurality of brake members being sleeved with the limiting groove on the limiting rod, and the plurality of brake members being linked with the elastic bodies, so that the brake members are normally close to the rotating shaft, and the brake members are fixed with a flange on the outside, and the outer shaft covers the plurality of brake members, when the centrifugal force of the brake members rotating the rotor is greater than the elastic force of the elastic bodies, the flange is expanded and pressed against the outer shaft, thereby forming synchronous rotation of the rotating shaft, the inner shaft, the brake members, and the outer shaft. Advantages

[0016] Compared with the prior art, the present application has the following advantages:

[0017] 1. The third slot and the trapezoidal hole filled with the conductive body can form an induced torque, so that the rotor can be self-started without the need for a controller, and the rotor is formed with an outer ring at the outer periphery adjacent to the third slot and the trapezoidal hole, and the third slot and the trapezoidal hole are cut through the outer ring to form a notch groove, and the reinforced surface is arranged around the outer periphery of the rotor and covers the notch groove, thereby effectively enhancing the self-starting ability under the condition of ideal operating efficiency, and preventing the rotor from being damaged at high speed, so as to have the effects of high motor efficiency and high structural strength;

[0018] 2. The third slot and the trapezoidal hole are extended to form a notch groove at the second bridge, and the notch groove forms a small hole in the outer ring, and in this state, the conductive body is still covered by most of the rotor, and the reinforced surface improves the overall structural strength, and the rotor does not form magnetic leakage from the outer ring, thereby improving the motor efficiency of the rotor;

[0019] 3. When the self-starting reluctance motor starts, the rotor is not connected to the load, and after the speed is raised, the load is connected by the clutch, so as to reduce the starting resistance of the rotor, so that the rotor can quickly reach the steady state from the start, and the demand for magnetic conductive material can be greatly reduced, thereby not sacrificing the motor efficiency for the self-starting function;

[0020] 4. The iron core pieces are formed with a plurality of engaging portions, so that a plurality of the iron core pieces are engaged with each other by the engaging portions to form an iron core disc, and the plurality of iron core discs are formed with an overlapping misalignment of 1 to 2 degrees of the same axis, so that the electric conductors can be formed in the third slot and the trapezoidal hole in a casting filling manner without being affected, and the contact area of the electric conductors, the third slot and the trapezoidal hole is effectively increased, thereby increasing the combination area and the combination strength between the electric conductors and the rotor, and accordingly, each of the electric conductors of the rotor is formed with a spiral bending of 4 to 15 degrees, so as to increase the magnetic induction time of each of the electric conductors, so as to improve the rotation smoothness of the rotor.

[0021] Other objects, advantages and novel features of the present application will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only show some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without any creative effort.

[0023] Fig. 1 is a perspective view of the present application.

[0024] Fig. 2 is a perspective exploded view of the present application.

[0025] Fig. 3 is a perspective exploded view of the rotor of the present application.

[0026] Fig. 4 is a front view of the rotor of the present application.

[0027] Fig. 5 is a partial sectional view of the rotor of the present application with d-axis and q-axis indicated.

[0028] Fig. 6 is a partial sectional view of the present application with a heat shrinkable film wrapped thereon (I).

[0029] Fig. 7 is a partial sectional view of the present application with a heat shrinkable film wrapped thereon (II).

[0030] Fig. 8 is a schematic view of the rotor and the stator of the present application forming a magnetic flux.

[0031] Fig. 9 is a schematic view of the rotor of the present application with a clutch installed.

[0032] Fig. 10 is a schematic view of the structure of the clutch of the present application.

[0033] Fig. 11 is a partial sectional view of another embodiment of the present application.

[0034] Fig. 12 is a perspective view of the core piece of the present application with the engaging portion.

[0035] Fig. 13 is a perspective view of the core pieces of the present application with the overlapping angle.

[0036] Fig. 14 is an exploded perspective view of the rotor of the present application with the fixing plate and the strip-shaped body.

[0037] Fig. 15 is a front view of the rotor of the present application with the fixing plate and the strip-shaped body.

[0038] Wherein: 10: rotor; 10A: reinforced surface layer; 10B, 10C: heat shrinkage film; 101: rotating shaft; 102: magnetic conducting path; 103: core piece; 103A: engaging portion; 104: core round plate; 11: first slot; 12: second slot; 13: third slot; 131, 141: notch slot; 14: trapezoidal hole; 15: electric conductor; 16: first bridge; 17: outer ring; 18: second bridge; 19: electric conducting strip; 20: stator; 21: air gap; 22: magnetic pole; 30: clutch; 31: inner shaft; 311: limiting rod; 32: brake; 321: limiting slot; 322: leaf spring; 33: elastic body; 34: outer shaft; 40: fixing plate; 41: fixing slot; 42: strip-shaped body. Best mode of the present application Embodiment of the present application

[0039] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0040] As shown in FIG. 1 to FIG. 5, a self-starting reluctance motor includes a rotor 10, a reinforced surface layer 10A, a stator 20, and a clutch 30. The rotor 10 is cylindrically shaped with a rotating shaft 101 passing through the center thereof. The rotor 10 is symmetrically provided with a plurality of first slots 11, a plurality of second slots 12, and a plurality of third slots 13 with the q-axis as the center line. The first slots 11 are perpendicular to the q-axis. The second slots 12 and the third slots 13 are parallel to the d-axis. The second slots 12 and the third slots 13 sequentially extend at both ends of the first slots 11. The rotor 10 is formed with a plurality of magnetic flux paths 102 by magnetic barriers between the first slots 11, the second slots 12, and the third slots 13. The q-axis on the outer periphery of the rotor 10 is penetrated by a trapezoidal hole 14. The upper base of the trapezoidal hole 14 faces the direction of the rotating shaft 101. The volume of the trapezoidal hole 14 is between 2 times and 4 times the volume of the third slot 13. The first slots 11, the second slots 12, the third slots 13, and the trapezoidal hole 14 are all penetrated along the axial direction of the rotating shaft 101. The third slots 13 and the trapezoidal hole 14 are both provided with a conductor 15. The conductor 15 is annularly formed on the outer periphery of the rotor 10. The conductor 15 can be made of copper, copper alloy, aluminum, or aluminum alloy. The first slots 11, the second slots 12, and the third slots 13 are spaced apart to form the magnetic flux paths 102, so that the magnetic flux can pass through the magnetic flux paths 102 in a controllable manner. Thus, the reluctance torque is generated by the inductance difference of the rotor 10 to achieve constant-speed operation. The conductor 15 filled in the third slots 13 can form an induced torque, so that the rotor 10 can self-start without the need for a controller. It is worth noting that the volume of the trapezoidal hole 14 is 2 to 4 times the volume of the third slot 13, so that the rotor 10 forms sufficient inductance difference between the q-axis and the d-axis, thereby effectively enhancing the self-starting capability under the condition of ideal operating efficiency.

[0041] Wherein the rotor 10 is fixed by overlapping a plurality of core pieces 103, the first slot 11 and the second slot 12 of each core piece 103 are communicated with each other, and the second slot 12 and the third slot 13 are spaced apart by a first bridge 16, the structural strength of the core piece 103 is improved by the first bridge 16 and the reinforced surface layer 10A, and the electric conductor 15 is formed in the third slot 13 and the trapezoidal hole 14 by casting filling, accordingly, the core pieces 103 are formed in a cylindrical shape by stamping and overlapping, the magnetic path 102 of the inner ring is communicated by the first bridge 16 during stamping and overlapping, thereby preventing the core pieces 103 from being twisted, deformed or broken, so as to ensure the production yield. The rotor 10 is formed with an outer ring 17 at the outer periphery adjacent to the third slot 13 and the trapezoidal hole 14, after the electric conductor 15 is cast filled, part of the outer ring 17 is machined and removed, the third slot 13 and the trapezoidal hole 14 are cut through the outer ring 17 to form a notch slot 131, 141, that is, a small broken hole is formed when part of the outer ring 17 is removed, in this state, the electric conductor 15 is still covered by most of the rotor 10, so that the electric conductor 15 does not separate or deform due to tool machining, thereby breaking the outer ring 17 while maintaining the structural strength of the rotor 10, and the broken outer ring 17 can reduce the magnetic flux leakage and improve the motor efficiency of the rotor 10. The rotor 10 is in a broken state of the outer ring 17, a reinforced surface layer 10A is arranged at the outer periphery of the rotor 10 and covers the notch slot 131, 141, the reinforced surface layer 10A is made of non-conductive composite material, the reinforced surface layer 10A is a continuous carbon fiber ring formed by dry coating or wet winding method, the rotor 10 is tightened by the reinforced surface layer 10A, thereby preventing the rotor 10 from being damaged during high-speed operation, so as to have the effects of high motor efficiency and high structural strength.

[0042] Further, as shown in FIG. 6, a heat shrinkable film 10B is further provided between the outer periphery of the rotor 10 and the reinforced surface layer 10A, and the heat shrinkable film 10B is shrunk to cover the rotor 10. First, the heat shrinkable film 10B is sleeved on the rotor 10, and hot air is blown to make the heat shrinkable film 10B shrink to tightly cover the rotor 10. At this time, sufficient tightening force can be effectively provided to prevent the rotor 10 from deforming or breaking before and during the covering of the reinforced surface layer 10A. When the reinforced surface layer 10A is covered, the temperature is used to further melt the heat shrinkable film 10B, so that part of the heat shrinkable film 10B is melted into the gap of the rotor, and part of the heat shrinkable film 10B is fused with the reinforced surface layer 10A, so that the reinforced surface layer 10A and the rotor 10 are more tightly connected without gaps, thereby effectively providing the structural strength of the rotor 10. The heat shrinkable film 10B can be any one of a PVC shrinkable film, a POE shrinkable film, an OPS shrinkable film, or a PET shrinkable film.

[0043] Further, as shown in FIG. 7, a heat shrinkable film 10C is further provided on the outer periphery of the reinforced surface layer 10A, and the heat shrinkable film 10C is shrunk to cover the reinforced surface layer 10A. In this way, water vapor can be effectively blocked from the reinforced surface layer 10A, thereby improving the stability and durability of the rotor 10. The heat shrinkable film can be any one of a PVC shrinkable film, a POE shrinkable film, an OPS shrinkable film, or a PET shrinkable film.

[0044] As shown in FIGS. 1-5, the surface area of the first bridge 16 at both ends is greater than the surface area at the middle section, with a ratio of two to one. This can effectively reduce the amount of magnetic flux of the magnetic conduction path 102 passing through the first bridge 16, without affecting the function of the first bridge 16 in providing structural strength. The width of the magnetic conduction path 102 of the rotor 10 at the d-axis is twice the width of the magnetic conduction path 102 at the q-axis. The width of the magnetic conduction path 102 of the rotor 10 at the q-axis is equal to the width of the first slot 11, the second slot 12, and the third slot 13. Alternatively, the width of the magnetic conduction path 102 of the rotor 10 at the q-axis is slightly greater than the width of the first slot 11, the second slot 12, and the third slot 13. In combination with the increased volume of the trapezoidal hole 14 filled with more conductive bodies 15, the inductance difference between the q-axis and the d-axis of the rotor 10 is enlarged, which significantly improves the starting torque of the rotor 10. The first slot 11 and the second slot 12 remain hollow, which not only forms a magnetic barrier to allow magnetic flux to flow in an orderly manner along the magnetic conduction path 102, but also has good heat dissipation effect. Furthermore, the conductive bodies 15 are distributed at the outer periphery of the rotor 10, so that the rotor 10 can maintain a constant speed under high load.

[0045] As shown in FIG. 8, FIG. 9 and FIG. 10, the self-starting reluctance motor further comprises a stator 20. The rotor 10 is spaced apart from the magnetic flux path 102 by the first slot 11, the second slot 12, the third slot 13 and the trapezoidal hole 14, and the electric conductor 15 is filled in the third slot 13 and the trapezoidal hole 14. The stator 20 is cylindrically arranged on the outer periphery of the rotor 10, and the rotor 10 and the stator 20 are spaced apart by an air gap 21. The stator 20 is annularly provided with a plurality of magnetic poles 22, so that the magnetic flux passing through the air gap 21 is around the magnetic poles 22 and the magnetic flux path 102. The rotor 10 is connected to a clutch 30. The clutch 30 comprises an inner shaft 31, a plurality of brake members 32, a plurality of elastic bodies 33 and an outer shaft 34. The inner shaft 31 is sleeved and fixed on the rotating shaft 101, and the inner shaft 31 is radially extended with a plurality of limiting rods 311. The brake members 32 are formed with a limiting groove 321 in the middle, and the brake members 32 are slidably arranged on the limiting rods 311 by the limiting grooves 321. The elastic bodies 33 are connected between the brake members 32, so that the brake members 32 are always close to the rotating shaft 101. The brake members 32 are fixed with a flange 322 on the outer side, and the outer shaft 34 covers the brake members 32. When the centrifugal force of the brake members 32 rotating the rotor 10 is greater than the elastic force of the elastic bodies 33, the flange 322 is outwardly pressed against the outer shaft 34, thereby forming synchronous rotation of the rotating shaft 101, the inner shaft 31, the brake members 32 and the outer shaft 34, and the outer shaft 34 forms a power output. When the self-starting reluctance motor starts, the rotor 10 is not connected to the load, and after the speed is increased, the clutch 30 is connected to the load, so as to reduce the starting resistance of the rotor 10, so that the rotor 10 can quickly start to reach the constant speed running state. Further, the reluctance motor has a self-starting function, and the added magnetic flux material will reduce the motor efficiency. The clutch 30 can greatly reduce the demand for magnetic flux material, so as not to sacrifice the motor efficiency for the self-starting function.

[0046] Another embodiment of the present application is shown in Fig. 11, wherein the rotor 10 is fixed by overlapping a plurality of core pieces 103, the second slot 12 and the third slot 13 are spaced apart by a first bridge 16, each of the core pieces 103 is formed with an extension slot 111 at both ends of the first slot 11 towards the second slot 12, and the second slot 12 and the extension slot 111 are spaced apart by a second bridge 18, the structural strength of the core pieces 103 is improved by the first bridge 16, the second bridge 18 and the strong surface layer 17, and the electric conductor 15 is formed in the third slot 13 and the trapezoidal hole 14 by casting filling, and the second slot 12 is formed with an electrically conductive strip 19 by casting filling, a plurality of the electrically conductive strips 19 are arranged in a ring on the inside of the electric conductor 15, thereby providing another alternative design, the electric conductor 15 and the electrically conductive strip 19 are arranged to improve the starting torque and improve the self-starting ability of the rotor 10.

[0047] As shown in Figs. 12 and 13, the rotor 10 is fixed by overlapping a plurality of core pieces 103, and the core pieces 103 are formed with a plurality of engaging portions 103A, and the engaging portions 103A are convex on one side of the core pieces 103 and concave on the other side, a plurality of the core pieces 103 are fixed by engaging with each other to form a core round plate 104, the core round plates 104 are overlapped and misaligned by 1 to 2 degrees of rotation about the same axis, the electric conductor 15 is formed in the third slot 13 and the trapezoidal hole 14 by casting filling without being affected, and the contact area of the electric conductor 15, the third slot 13 and the trapezoidal hole 14 is effectively improved, thereby improving the bonding area and bonding strength between the electric conductor 15 and the rotor 10, when part of the outer ring 17 is removed to form a broken hole with notch slots 131, 141, the fitting force of the rotor 10 and the electric conductor 15 is effectively improved, the rotor 10 and the electric conductor 15 are not easily deformed and damaged, and further, each group of the core round plates 104 is combined by 5 to 30 core pieces 103, and the core round plates 104 of the second layer and above need to be further cut to remove the convex engaging portions 103A, so that a plurality of groups of the core round plates 104 are stacked and the angle between the groups of the core round plates 104 is changed, accordingly, each of the electric conductors 15 of the rotor 10 is formed with a spiral bend of 4 to 15 degrees, thereby increasing the magnetic induction time of each of the electric conductors 15 to improve the rotation smoothness of the rotor 10.

[0048] As shown in FIG. 14 and FIG. 15, the self-starting reluctance motor of the present application further comprises two fixed plates 40, which are respectively fixed on the axial ends of the rotor 10. The fixed plates 40 can be fixed on the rotor 10 in such a way that the shaft 101 passes through the fixed plates 40. The fixed plates 40 are provided with a plurality of fixed slots 41 corresponding to the first slots 11. The number of the fixed slots 41 can be equal to the number of the first slots 11. A plurality of strip bodies 42 are arranged between the two fixed plates 40. The strip bodies 42 can be made of glass fiber or magnet. The strip bodies 42 pass through the fixed slots 41 and the corresponding first slots 11 of the two fixed plates 40. Thus, the strip bodies 42 are accommodated in the first slots 11 and are clamped and limited by the fixed plates 40. The rotor 10 is clamped by the fixed plates 40 and the strip bodies 42, thereby effectively improving the structural strength of the rotor 10 and enabling the rotor 10 to withstand a higher rotating speed.

[0049] The above is only one specific embodiment of the present application. Any improvement made on the basis of the concept of the present application is considered to be within the protection scope of the present application.

Claims

1. A self-starting reluctance motor characterized by: Including a rotor, which is cylindrical and has a rotating shaft passing through the center, the rotor is symmetrical about the q-axis and has a plurality of first slots, a plurality of second slots and a plurality of third slots passing through it, the first slots are perpendicular to the q-axis, the second slots and the third slots are parallel to the d-axis, and the second slots and the third slots sequentially extend at both ends of the first slots, the rotor is formed with a plurality of magnetic flux paths by the magnetic barrier spacing of the first slots, the second slots and the third slots, wherein the q-axis at the outer periphery of the rotor is provided with a trapezoidal hole, and the third slot and the trapezoidal hole are provided with a conductor, the conductor is annular and formed at the outer periphery of the rotor, and the third slot and the trapezoidal hole are both cut through the outer ring to form a gap slot; a reinforced surface layer, which is provided around the outer periphery of the rotor and covers the gap slot, and the reinforced surface layer is made of non-conductive composite material; and a stator, which is provided around the outer periphery of the rotor and has a gap between the stator and the reinforced surface layer, and the stator is annular and provided with a plurality of magnetic poles, so that the magnetic flux passing through the gap surrounds the magnetic poles and the magnetic flux path.

2. The self-starting reluctance motor of claim 1, wherein: Wherein the rotor is fixed by a plurality of iron core pieces, the first slot and the second slot of each iron core piece are communicated with each other, and the second slot and the third slot are spaced apart by a first bridge, the structure strength of the rotor is improved by the first bridge and the reinforced surface layer, and the conductor can be formed in the third slot and the trapezoidal hole by casting filling.

3. A self-starting reluctance motor as claimed in claim 2, wherein: Wherein the rotor is fixed by a plurality of iron core pieces, the second slot and the third slot are spaced apart by a first bridge, each iron core piece has an extension slot at both ends of the first slot and faces the second slot, and the second slot and the extension slot are spaced apart by a second bridge, the structure strength of the rotor is improved by the first bridge, the second bridge and the reinforced surface layer, and the conductor can be formed in the third slot and the trapezoidal hole by casting filling, and the second slot is formed with a conductive strip by casting filling, and a plurality of the conductive strips are arranged in the inner side of the conductor in a ring shape.

4. A self-starting reluctance motor as claimed in claim 3, wherein: Wherein the rotor is fixed by a plurality of iron core pieces, and the iron core pieces are formed with a plurality of clamping parts, and the clamping parts are convex on one side of the iron core pieces and concave on the other side, so that a plurality of the iron core pieces are clamped and fixed by the clamping parts to form an iron core round plate, and the iron core round plates are coaxially rotated by 1-2 degrees, the conductor can be formed in the third slot and the trapezoidal hole by casting filling without affecting the contact area of the conductor, the third slot and the trapezoidal hole.

5. A self-starting reluctance motor as claimed in claim 2, 3 or 4 wherein: The reinforced surface layer is formed by dry coating or wet winding method to form a continuous carbon fiber ring.

6. A self-starting reluctance motor as claimed in claim 5, wherein: Wherein the outer periphery of the rotor and the reinforced surface layer are further sleeved with a heat shrinkable film, and the heat shrinkable film shrinks to cover the rotor, making the reinforced surface layer and the rotor more closely without gaps, and the heat shrinkable film can be any one of PVC shrink film, POE shrink film, OPS shrink film or PET shrink film.

7. The self-starting reluctance motor of claim 5, wherein: Wherein the outer periphery of the reinforced surface layer is further sleeved with a heat shrinkable film, and the heat shrinkable film shrinks to cover the reinforced surface layer to block water vapor, and the heat shrinkable film can be any one of PVC shrink film, POE shrink film, OPS shrink film or PET shrink film.

8. A self-starting reluctance motor as claimed in claim 2, 3 or 4 wherein: Wherein the upper base of the trapezoidal hole faces the direction of the shaft, and the volume of the trapezoidal hole is between 2 and 4 times the volume of the third slot, and the magnetic conduction path width of the rotor at the d-axis is twice the magnetic conduction path width at the q-axis.

9. A self-starting reluctance motor as claimed in claim 2, 3 or 4 wherein: Wherein two fixed plates are further included, and the two fixed plates are respectively fixed at the two ends of the axial direction of the rotor, and the fixed plate is provided with a plurality of fixed slots corresponding to the first slot, and a plurality of strip bodies are arranged between the two fixed plates, and the strip bodies pass through the fixed slots of the two fixed plates and the corresponding first slots at the same time.

10. The self-starting reluctance machine of claim 2, 3 or 4, wherein: Wherein the rotor is connected with a clutch, the clutch includes an inner shaft, a plurality of brake members, a plurality of elastic bodies and an outer shaft, the inner shaft is sleeved and fixed at the shaft, and the inner shaft extends radially with a plurality of limiting rods, the brake member is formed with a limiting slot at the middle section, a plurality of the brake members are slidably arranged on the limiting rods with the limiting slots, and the elastic bodies are linked between a plurality of the brake members, so that the brake members are normally close to the direction of the shaft, and the brake members are further fixed with a flange on the outside, and the outer shaft covers a plurality of the brake members, when the centrifugal force of the brake members rotating the rotor is greater than the elastic force of the elastic bodies, the flange is outwardly pressed against the outer shaft, thereby forming synchronous rotation of the shaft, the inner shaft, the brake members and the outer shaft.

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