Self-starting reluctance motor

Abstract

A self-starting reluctance motor comprises a rotor (10), a plurality of first slots (11), a plurality of second slots (12) and a plurality of third slots (13) penetrate through the rotor (10), the first slots (11) are perpendicular to a q axis, the second slots (12) and the third slots (13) are parallel to a d axis, and the second slots (12) and the third slots (13) sequentially extend to the two ends of the first slots (11); a plurality of magnetic conductive paths (102) are formed on the rotor (10) through magnetic barrier intervals of the first open slot (11), the second open slot (12) and the third open slot (13), a trapezoidal hole (14) penetrates through a q axis of the rotor (10) on the outer periphery, an electric conductor (15) is arranged in each of the third open slot (13) and the trapezoidal hole (14), the electric conductors (15) are annularly formed on the outer periphery of the rotor (10), and a plurality of magnetic conductive paths (102) are formed on the outer periphery of the rotor (10) through magnetic barrier intervals of the first open slot (11), the second open slot (12) and the third open slot (13). And the third open slot (13) and the trapezoidal hole (14) are cut to form notch grooves (131, 141) on the surface of the rotor, and a reinforced surface layer (10A) is arranged at the outer periphery of the rotor (10) in a surrounding manner and covers the notch grooves (131, 141), so that the self-starting capability and the motor efficiency can be both realized.

Description

[0001] The present invention relates to a reluctance motor, and more particularly to a self-starting reluctance motor having a starting capability and high motor efficiency achieved by improving a rotor structure. Background Art

[0002] A reluctance motor is a motor that uses the difference in magnetic resistance between the motor's direct axis (d-axis) and quadrature axis (q-axis) to generate a magnetic resistance torque, which in turn drives the rotor to rotate the shaft. Its physical essence is that the magnetic lines of force will form a closed path along the path with the smallest magnetic resistance, thereby driving the rotor to operate. Based on the reluctance motor, the self-starting reluctance motor achieves the purpose of self-starting by filling the rotor with conductive strips to generate asynchronous torque, overcoming the high cost problem of the conventional need to use a controller to drive it. Compared with conventional motors, the self-starting reluctance motor has low motor loss and high operating efficiency, and can stably achieve constant speed operation under high loads. It also has low cost and no permanent magnet demagnetization problem. SUMMARY OF THE INVENTION Technical issues

[0003] A detailed look at the above-mentioned conventional structure reveals that it still has some shortcomings, the main reasons being as follows: the motor efficiency of the reluctance rotor without filled conductive strips is high, but it does not have the self-starting capability. Although it can be started with an external controller, the cost of the controller is too high, resulting in this type of reluctance motor having no commercial value. Although it has a self-starting function after being filled with conductive strips, the magnetic conductivity of the conductive strips will reduce its motor efficiency, making the output power of the reluctance motor too low to effectively replace the conventional motor. Based on the above, the present application obtains a reluctance motor with both self-starting and high motor efficiency by improving the structure of the rotor. Technical Solutions

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

[0005] The objective of the present invention is achieved through the following technical solutions:

[0006] A self-starting reluctance motor comprises a rotor in a cylindrical shape with a rotating shaft passing through the center, the rotor is symmetrically penetrated with a plurality of first slots, a plurality of second slots and a plurality of third slots with the q axis as the midline, the first slots are all perpendicular to the q axis, the second slots and the third slots are all parallel to the d axis, and the second slots and the third slots extend sequentially at both ends of the first slot, and the rotor is formed with a plurality of magnetic paths through the magnetic barriers of the first slots, the second slots and the third slots, wherein the rotor is penetrated with a trapezoidal hole on the q axis at the outer periphery, and the third slots and the trapezoidal holes are both provided There is a conductor, which is formed in an annular shape at the outer periphery of the rotor. The rotor has an outer ring formed at the outer periphery and adjacent to the third slot and the trapezoidal hole, and the third slot and the trapezoidal hole both cut the outer ring to form a notch. A strengthening surface layer is arranged around the outer periphery of the rotor and covers the notch. The strengthening surface layer is made of a non-conductive composite material. A stator is arranged in a cylindrical shape at the outer periphery of the rotor, and an air gap is separated between the stator and the strengthening surface layer. The stator is annularly provided with a plurality of magnetic poles, so that the magnetic flux passes through the air gap around the magnetic pole and the magnetic conductive path.

[0007] In one embodiment, the rotor is fixed by overlapping a plurality of iron core sheets, the first slot and the second slot of each iron core sheet are interconnected, and a first bridge is provided between the second slot and the third slot which are not interconnected. The structural 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 and filling.

[0008] In one embodiment, the rotor is fixed by overlapping a plurality of iron core sheets, the second slot and the third slot are not connected to each other and there is a first bridge network between them, each of the iron core sheets has an extension slot formed at both ends of the first slot toward the second slot, and there is a second bridge network between the second slot and the extension slot, the structural strength of the rotor is improved by the first bridge network, the second bridge network and the reinforced surface layer, and the conductor can be formed in the third slot and the trapezoidal hole by casting and filling, and a conductive strip is formed in the second slot by casting and filling, and a plurality of the conductive strips are arranged in a ring shape on the inner side of the conductor.

[0009] In one embodiment, the rotor is fixed by overlapping a plurality of iron core sheets, and the iron core sheets are formed with a plurality of snap-fitting portions, and the snap-fitting portions are convex on one side of the iron core sheet and concave on the other side, so that a plurality of the iron core sheets are snap-fitted and fixed to each other by the snap-fitting portions to form an iron core circular plate, and an overlapping misalignment of 1 to 2 degrees coaxially rotated is formed between the plurality of the iron core circular plates, so that the conductor can be formed in the third slot and the trapezoidal hole by a casting filling method without being affected, and the contact area between the conductor, the third slot and the trapezoidal hole is effectively increased.

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

[0011] In one embodiment, a heat shrinkable film is provided between the outer periphery of the rotor and the reinforced surface layer, and the heat shrinkable film shrinks and covers the rotor, so that the reinforced surface layer and the rotor are more tightly connected without any gap. The heat 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 provided on the outer periphery of the reinforced surface layer, and the shrinkable film shrinks and covers the reinforced surface layer to block moisture. 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 rotation axis, and the volume of the trapezoidal hole is between 2 and 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 fixing plates are further included, the two fixing plates are respectively fixed at two axial ends of the rotor, and the fixing plates are provided with a plurality of fixing slots corresponding to the first slots, a plurality of strips are passed through the two fixing plates, and the strips pass through the fixing slots of the two fixing plates and the corresponding first slots at the same time.

[0015] In one embodiment, the rotor is connected to a clutch, which includes an inner shaft, a plurality of brake parts, a plurality of elastic bodies and an outer shaft. The inner shaft is sleeved and fixed on the rotating shaft, and the inner shaft has a plurality of limit rods extending radially. A limit groove is formed at the middle section of the brake part. A plurality of the brake parts are slidably mounted on the limit rod via the limit groove, and the elastic body is connected between the plurality of the brake parts so that the brake parts are normally inclined toward the rotating shaft. A brake pad is fixed on the outer side of the brake part, and the outer shaft covers the plurality of the brake parts. When the centrifugal force of the brake part when the rotor rotates is greater than the elastic force of the elastic body, the brake pad is stretched outward and pressed against the outer shaft, thereby forming synchronous rotation of the rotating shaft, the inner shaft, the brake part and the outer shaft. Beneficial Effects

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The conductor filled with the third slot and the trapezoidal hole can form an induction torque, so that the rotor can start and operate automatically without installing a controller. The rotor is formed with an outer ring at the outer periphery and adjacent to the third slot and the trapezoidal hole, and the third slot and the trapezoidal hole cut the outer ring to form a notch. The strengthening surface is arranged around the outer periphery of the rotor and covers the notch, thereby effectively enhancing the self-starting ability under the condition of ideal operating efficiency, and making the rotor less likely to be damaged when operating at high speed, so as to have both high motor efficiency and high structural strength.

[0018] 2. The third slot and the trapezoidal hole are both extended to form a notch slot at the second bridge, and the notch slot forms a tiny hole at the outer ring. In this state, the conductor is still covered by most of the rotor, and the reinforced surface layer is combined to improve the overall structural strength, so that the rotor will not form leakage magnetic flux from the outer ring, thereby improving the motor efficiency of the rotor;

[0019] 3. When the self-starting reluctance motor is started, the rotor is not connected to the load, and the clutch is connected to the load after the speed is increased, so the starting resistance of the rotor can be reduced, allowing the rotor to reach a constant speed running state more quickly from starting, which can greatly reduce the demand for magnetic conductive materials, thereby eliminating the need to sacrifice motor efficiency for the self-starting function;

[0020] 4. The core sheet is formed with a plurality of engaging parts, so that the plurality of core sheets are mutually engaged and fixed by the engaging parts to form an iron core disc, and the plurality of iron core discs are overlapped and misaligned by 1 to 2 degrees of coaxial rotation, so that the conductor can be formed in the third slot and the trapezoidal hole by casting filling without being affected, and the contact area between the conductor, the third slot and the trapezoidal hole is effectively increased, thereby increasing the bonding area and bonding strength between the conductor and the rotor. Accordingly, each of the conductors of the rotor is formed with a spiral bend of 4 to 15 degrees, which can increase the magnetic induction time of each conductor, 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 and the associated drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a three-dimensional diagram of the present invention.

[0024] Figure 2 It is a three-dimensional exploded view of the present invention.

[0025] Figure 3 It is a three-dimensional exploded view of the rotor of the present invention.

[0026] Figure 4 It is a front view of the rotor of the present invention.

[0027] Figure 5 It is a partial cross-sectional view of the rotor of the present invention with the d-axis and the q-axis marked.

[0028] Figure 6 It is a partial cross-sectional view (1) of the present invention coated with a heat shrinkable film.

[0029] Figure 7 It is a partial cross-sectional view (2) of the present invention coated with a heat shrinkable film.

[0030] Figure 8 It is a schematic diagram of the magnetic flux formed by the rotor and stator of the motor of the present invention.

[0031] Fig. 9 It is a schematic diagram of the rotor of the motor of the present invention being equipped with a clutch.

[0032] FIG. 10 is a schematic diagram of the clutch structure of the motor of the present invention.

[0033] FIG. 11 is a partial cross-sectional view of another embodiment of the present invention.

[0034] FIG. 12 is a three-dimensional schematic diagram showing an iron core sheet molded with a locking portion according to the present invention.

[0035] FIG. 13 is a three-dimensional schematic diagram of the overlapping rotation angles of the iron core sheets of the present invention.

[0036] FIG. 14 is a perspective exploded view of the rotor of the present invention equipped with a fixing plate and a strip body.

[0037] FIG. 15 is a front view showing a rotor according to the present invention equipped with a fixing plate and a strip body.

[0038] Among them: 10: rotor; 10A: reinforced surface layer; 10B, 10C: heat shrink film; 101: rotating shaft; 102: magnetic path; 103: iron core plate; 103A: clamping part; 104: iron core circular plate; 11: first slot; 12: second slot; 13: third slot; 131, 141: notch slot; 14: trapezoidal hole; 15: conductor; 16: first bridge network; 17: outer ring; 18: second bridge network; 19: conductive strip; 20: stator; 21: air gap; 22: magnetic pole; 30: clutch; 31: inner shaft; 311: limit rod; 32: brake member; 321: limit slot; 322: brake pad; 33: elastic body; 34: outer shaft; 40: fixing plate; 41: fixing slot; 42: strip body. Best Mode for Carrying Out the Invention Embodiments of the present invention

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] like Figures 1 to 5As shown, a self-starting reluctance motor comprises: a rotor 10, a reinforced surface layer 10A, a stator 20 and a clutch 30. The rotor 10 is cylindrical and has a rotating shaft 101 passing through the center. 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 midline. The first slots 11 are all perpendicular to the q axis, the second slots 12 and the third slots 13 are all parallel to the d axis, and the second slots 12 and the third slots 13 are parallel to the d axis. 13 sequentially extends to both ends of the first slot 11, and the rotor 10 forms a plurality of magnetic paths 102 through the magnetic barriers of the first slot 11, the second slot 12 and the third slot 13, wherein a trapezoidal hole 14 is penetrated on the q axis at the outer periphery of the rotor 10, and the upper bottom of the trapezoidal hole 14 faces the direction of the rotating shaft 101, and the volume of the trapezoidal hole 14 is between 2 and 4 times the volume of the third slot 13, and the first slot 11, the second slot 12, the third slot 13 are connected to the rotor 10. The third slot 13 and the trapezoidal hole 14 are both formed in a through shape along the axial direction of the rotating shaft 101. In addition, a conductor 15 is provided in each of the third slot 13 and the trapezoidal hole 14, so that the conductor 15 is formed in an annular shape at the outer periphery of the rotor 10, and the conductor 15 can be made of copper, copper alloy, aluminum or aluminum alloy. In summary, the first slot 11, the second slot 12 and the third slot 13 are spaced to form the magnetic path 102, so that the magnetic flux can pass through the magnetic path in a controllable manner. The diameter 102 is formed by the inductance difference of the rotor 10 to generate a magnetic resistance torque to achieve constant speed operation. The conductor 15 filled in the third slot 13 can form an induction torque, so that the rotor 10 can start and operate automatically without the need for a controller. It is also 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 a sufficient inductance difference between the q-axis and the d-axis, thereby effectively enhancing the self-starting ability under the condition of ideal operating efficiency.

[0041] The rotor 10 is overlapped and fixed by a plurality of core sheets 103. The first slot 11 and the second slot 12 of each core sheet 103 are interconnected, and a first bridge 16 is provided between the second slot 12 and the third slot 13 which are not interconnected. The structural strength of the core sheet 103 is improved by the first bridge 16 and the strengthening surface layer 10A, and the conductor 15 can be formed in the third slot 13 and the trapezoidal hole 14 by casting and filling. Accordingly, the core sheets 103 are formed by stamping and then overlapped to form a cylindrical shape. During the stamping and overlapping process, the magnetic path 102 of the inner ring is connected by the first bridge 16, thereby preventing the core sheets 103 from being twisted, deformed or broken, so as to ensure its production yield. The rotor 10 is also provided with an outer ring 17 at the outer periphery and adjacent to the third slot 13 and the trapezoidal hole 14. After the conductor 15 is cast and filled, part of the outer ring 17 can be processed and removed, so that the third slot 13 and the trapezoidal hole 14 both cut the outer ring 17 to form a notch 131, 141, that is, a broken hole of the third slot 13 and the trapezoidal hole 14 is formed. In other words, a tiny broken hole can be formed when part of the outer ring 17 is removed. In this state, the conductor 15 is still covered by most of the rotor 10, so that the conductor 15 will not be separated or deformed due to tool processing, thereby disconnecting the outer ring 17 while maintaining the structural strength of the rotor 10, and the disconnected outer ring 17 can reduce its leakage magnetic flux, thereby improving the motor efficiency of the rotor 10. When the outer ring 17 of the rotor 10 is in a disconnected state, a reinforcing surface layer 10A is arranged around the outer periphery of the rotor 10 and covers the notches 131 and 141. The reinforcing surface layer 10A is made of a non-conductive composite material. The reinforcing surface layer 10A is a continuous carbon fiber ring formed by a dry coating or wet winding method. The reinforcing surface layer 10A tightens the rotor 10, thereby making the rotor 10 less likely to be damaged when running at a high speed, so as to have both high motor efficiency and high structural strength.

[0042] Further cooperation Figure 6As shown, a heat shrinkable film 10B (Shrinkable Film) is further provided between the outer periphery of the rotor 10 and the reinforced surface layer 10A, and the heat shrinkable film 10B shrinks and covers the rotor 10. First, the heat shrinkable film 10B is placed on the rotor 10 and hot air is blown to shrink the heat shrinkable film 10B and tightly wrap the rotor 10. At this time, sufficient tightening force can be effectively provided to prevent the rotor 10 from being deformed or broken before and during the wrapping of the reinforced surface layer 10A. When wrapping the reinforced surface layer 10A, the heat shrinkable film 10B is further melted by utilizing its temperature, so that the heat shrinkable film 10B is partially integrated into the gap of the rotor and partially fused with the reinforced surface layer 10A, so that the reinforced surface layer 10A and the rotor 10 are more tightly connected without gaps, so as to effectively provide the structural strength of the rotor 10. The heat shrinkable film 10B can be any one of PVC shrinkable film, POE shrinkable film, OPS shrinkable film or PET shrinkable film.

[0043] Further cooperation Figure 7 As shown, a heat shrinkable film 10C (Shrinkable Film) is further provided on the outer periphery of the reinforced surface layer 10A, and the heat shrinkable film 10C shrinks and covers the reinforced surface layer 10A, thereby effectively blocking moisture and the reinforced surface layer 10A, thereby improving the stability and durability of the rotor 10, and the heat shrinkable film can be any one of PVC shrinkable film, POE shrinkable film, OPS shrinkable film or PET shrinkable film.

[0044] For example Figures 1 to 5 As shown, the surface area of ​​the two ends of the first bridge 16 is greater than the surface area of ​​the middle section, and the difference ratio between the two is two to one, which can effectively reduce the amount of magnetic flux of the magnetic path 102 passing through the first bridge 16 without affecting the function of the first bridge 16 to provide structural strength. The width of the magnetic path 102 of the rotor 10 at the d-axis is twice the width of the magnetic path 102 at the q-axis, and the width of the magnetic 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, or the width of the magnetic path 102 of the rotor 10 at the q-axis is slightly larger 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, more of the conductor 15 is filled, so that the difference in inductance 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 in a hollow state, which not only forms a magnetic barrier to allow the magnetic flux to flow along the magnetic path 102 in an orderly manner, but also has a good heat dissipation effect. Moreover, the conductor 15 is distributed at the outer peripheral position of the rotor 10, so that the rotor 10 can maintain a constant speed under a high load state.

[0045] For example Figure 8 , Fig. 9 As shown in FIG. 10 , the self-starting reluctance motor of the present invention further includes a stator 20. The rotor 10 is separated by the first slot 11, the second slot 12, the third slot 13 and the trapezoidal hole 14 to form the magnetic path 102, and the third slot 13 and the trapezoidal hole 14 are filled with the conductor 15. The stator 20 is cylindrically arranged on the outer periphery of the rotor 10, and an air gap 21 is spaced between the rotor 10 and the stator 20. The stator 20 is annularly provided with a plurality of magnetic poles 22, so that the magnetic flux passes through the air gap 21 around the magnetic poles 22 and the magnetic path 102. The rotor 10 is connected to a clutch 30, which includes 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 limit rods 311. A limit groove 321 is formed at the middle section of the brake member 32. A plurality of the brake members 32 are slidably mounted on the limit rod 311 by the limit groove 321, and the elastic body 33 is connected between the plurality of the brake members 32, so that the brake members 32 are normally close to the rotating shaft 101. A brake pad 322 is fixed on the outer side of the brake member 32, and the outer shaft 34 is covered with the plurality of the brake members 32. When the rotor 10 rotates, the centrifugal force of the brake member 32 is greater than that of the outer shaft 34. When the elastic force of the elastic body 33 is applied, the brake pad 322 is stretched outward to press against the outer shaft 34, thereby forming a synchronous rotation of the rotating shaft 101, the inner shaft 31, the brake member 32 and the outer shaft 34, and the outer shaft 34 forms a power output. When the self-starting reluctance motor is started, the rotor 10 is not connected to the load, and is connected to the load by the clutch 30 after the speed is increased, so the starting resistance of the rotor 10 can be reduced, allowing the rotor 10 to reach a constant speed running state more quickly from starting. Further explanation: the reluctance motor has a self-starting function, and the added magnetic conductive material will reduce its motor efficiency. The present application can greatly reduce the demand for magnetic conductive material by adding the clutch 30, thereby eliminating the need to sacrifice motor efficiency for the self-starting function.

[0046] According to another embodiment of the present invention, as shown in FIG. 11 , the rotor 10 is fixed by overlapping a plurality of core sheets 103. The second slot 12 and the third slot 13 are not connected to each other and are separated by a first bridge 16. Each core sheet 103 has an extension slot 111 formed at both ends of the first slot 11 toward the second slot 12, and a second bridge 18 is separated between the second slot 12 and the extension slot 111. The first bridge 16, the second bridge 18 and the strong The surface layer 17 improves the structural strength of the iron core sheet 103, and allows the conductor 15 to be formed in the third slot 13 and the trapezoidal hole 14 by casting and filling. A conductive bar 19 is formed in the second slot 12 by casting and filling. A plurality of conductive bars 19 are arranged in a ring shape on the inner side of the conductor 15, thereby providing another optional design scheme. The arrangement of the conductor 15 and the conductive bar 19 can increase the starting torque, so that the rotor 10 has improved self-starting ability.

[0047] As shown in FIG. 12 and FIG. 13 , the rotor 10 is overlapped and fixed by a plurality of core sheets 103, and the core sheets 103 are formed with a plurality of engaging portions 103A, and the engaging portions 103A are convex on one side of the core sheet 103 and concave on the other side, so that a plurality of core sheets 103 are mutually engaged and fixed by the engaging portions 103A to form a core disc 104, and an overlapping misalignment of 1 to 2 degrees coaxially rotated is formed between the plurality of core discs 104, so that the conductor 15 can be formed in the third slot 13 and the trapezoidal hole 14 by casting filling without being affected, and the contact area between the conductor 15, the third slot 13 and the trapezoidal hole 14 is effectively increased, thereby increasing the bonding area and bonding strength between the conductor 15 and the rotor 10 When a portion of the outer ring 17 is machined and removed to form the notched grooves 131 and 141, the fitting force between the rotor 10 and the conductor 15 can be effectively improved, so that the rotor 10 and the conductor 15 are not easily deformed or damaged. To further illustrate, each set of the core discs 104 is formed by combining 5 to 30 core sheets 103, and the overlapping core discs 104 above the second layer need to further cut off the convex engaging portion 103A, so that multiple sets of the core discs 104 can be stacked on each other and the angles between the multiple sets of the core discs 104 can be changed. Accordingly, each of the conductors 15 of the rotor 10 is formed with a spiral bend of 4 to 15 degrees, which can increase the magnetic induction time of each conductor 15, so as to improve the rotation smoothness of the rotor 10.

[0048] As shown in FIGS. 14 and 15 , the self-starting reluctance motor of the present invention further includes two fixing plates 40, and the two fixing plates 40 are respectively fixed at the axial ends of the rotor 10, and the fixing method can be to allow the rotating shaft 101 to pass through the fixing plates 40, and the fixing plates 40 are provided with a plurality of fixing grooves 41 corresponding to the first slots 11, that is, the number of the fixing grooves 41 can be equal to the number of the first slots 11, wherein a plurality of strips 42 are passed through the two fixing plates 40, and the strips 42 can be made of glass fiber material or magnets, and the strips 42 simultaneously pass through the fixing grooves 41 of the two fixing plates 40 and the corresponding first slots 11, accordingly, the strips 42 are accommodated in the first slots 11, and are fixed and limited by the fixing plates 40, so that the rotor 10 is tightened by the fixing plates 40 and the strips 42, thereby effectively improving the structural strength of the rotor 10, so that the rotor 10 can withstand a higher speed operation state.

[0049] The above is only a specific implementation of the present invention, and any other improvements made based on the concept of the present invention are considered to be within the protection scope of the present invention.

Claims

1. A self-starting reluctance motor, characterized in that: include A rotor, which is cylindrical and has a rotating shaft passing through the center. The rotor is symmetrically penetrated with a plurality of first slots, a plurality of second slots and a plurality of third slots with the q-axis as the midline. 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 extend in sequence at both ends of the first slot. The rotor is formed with a plurality of magnetic paths through the magnetic barriers of the first slots, the second slots and the third slots. A trapezoidal hole is penetrated on the q-axis at the outer periphery of the rotor, and a conductor is disposed in the third slot and the trapezoidal hole, so that the conductor is formed in a ring shape at the outer periphery of the rotor. The rotor is formed with an outer ring at the outer periphery and adjacent to the third slot and the trapezoidal hole, and the third slot and the trapezoidal hole cut the outer ring to form a notch groove; a strengthening surface layer, which is arranged around the outer periphery of the rotor and covers the notch groove, and the strengthening surface layer is made of a non-conductive composite material; and A stator is provided on the outer periphery of the rotor in a cylindrical shape, and an air gap is provided between the stator and the reinforced surface layer. The stator is provided with a plurality of magnetic poles in an annular shape, so that the magnetic flux passes through the air gap and around the magnetic poles and the magnetic conductive path.

2. The self-starting reluctance motor according to claim 1, characterized in that: The rotor is fixed by overlapping a plurality of iron core sheets, the first slot and the second slot of each iron core sheet are interconnected, and a first bridge is provided between the second slot and the third slot which are not interconnected. The structural 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 and filling.

3. The self-starting reluctance motor according to claim 2, characterized in that: The rotor is fixed by overlapping a plurality of iron core sheets, the second slot and the third slot are not connected to each other and there is a first bridge, each of the iron core sheets has an extension slot formed at both ends of the first slot toward the second slot, and there is a second bridge between the second slot and the extension slot, the structural 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 and filling, and a conductive strip is formed in the second slot by casting and filling, and a plurality of the conductive strips are arranged in a ring shape on the inner side of the conductor.

4. The self-starting reluctance motor according to claim 3, characterized in that: The rotor is fixed by overlapping a plurality of iron core sheets, and the iron core sheets are formed with a plurality of clamping parts, and the clamping parts are convex on one side of the iron core sheets and concave on the other side, so that a plurality of iron core sheets are clamped and fixed to each other by the clamping parts to form an iron core circular plate, and overlapping misalignment between the plurality of iron core circular plates is formed between 1 degree and 2 degrees of coaxial rotation, so that the conductor can be formed in the third slot and the trapezoidal hole by casting filling without being affected, and the contact area between the conductor, the third slot and the trapezoidal hole is effectively increased.

5. The self-starting reluctance motor according to claim 2, 3 or 4, characterized in that: The reinforcing surface layer is a continuous carbon fiber ring formed by dry coating or wet winding method.

6. The self-starting reluctance motor according to claim 5, characterized in that: A heat shrinkable film is provided between the outer periphery of the rotor and the reinforced surface layer, and the heat shrinkable film shrinks and covers the rotor, so that the reinforced surface layer and the rotor are more tightly connected without any gap. The heat shrinkable film can be any one of PVC shrinkable film, POE shrinkable film, OPS shrinkable film or PET shrinkable film.

7. The self-starting reluctance motor according to claim 5, characterized in that: The outer periphery of the reinforced surface layer is covered with a heat shrinkable film, and the heat shrinkable film shrinks and covers the reinforced surface layer to block moisture. The heat shrinkable film can be any one of PVC shrinkable film, POE shrinkable film, OPS shrinkable film or PET shrinkable film.

8. The self-starting reluctance motor according to claim 2, 3 or 4, characterized in that: The upper bottom of the trapezoidal hole faces the rotation axis, and the volume of the trapezoidal hole is between 2 and 4 times the volume of the third slot. 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.

9. The self-starting reluctance motor according to claim 2, 3 or 4, characterized in that: It further includes two fixing plates, which are respectively fixed at the two axial ends of the rotor, and the fixing plates are provided with a plurality of fixing grooves corresponding to the first slots. A plurality of strips are passed between the two fixing plates, and the strips pass through the fixing grooves of the two fixing plates and the corresponding first slots at the same time.

10. The self-starting reluctance motor according to claim 2, 3 or 4, characterized in that: The rotor is connected to a clutch, which includes an inner shaft, a plurality of brake parts, a plurality of elastic bodies and an outer shaft. The inner shaft is sleeved and fixed on the rotating shaft, and the inner shaft is radially extended with a plurality of limit rods. A limit groove is formed at the middle section of the brake part. A plurality of the brake parts are slidably mounted on the limit rod with the limit groove, and the elastic body is connected between the plurality of the brake parts so that the brake parts are normally leaning toward the rotating shaft. A brake pad is fixed on the outer side of the brake part, and the outer shaft covers the plurality of the brake parts. When the centrifugal force of the brake part when the rotor rotates is greater than the elastic force of the elastic body, the brake pad is stretched outward to press against the outer shaft, thereby forming a synchronous rotation of the rotating shaft, the inner shaft, the brake part and the outer shaft.

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