CN103986256A - Switched reluctance motor rotor and motor thereof - Google Patents
Switched reluctance motor rotor and motor thereof Download PDFInfo
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- CN103986256A CN103986256A CN201310050266.2A CN201310050266A CN103986256A CN 103986256 A CN103986256 A CN 103986256A CN 201310050266 A CN201310050266 A CN 201310050266A CN 103986256 A CN103986256 A CN 103986256A
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Abstract
The present invention relates to a switched reluctance motor rotor including a rotor body and a plurality of rotor salient poles protruding outward from the rotor body in a radial direction. Wherein a magnetic resistance increasing section is provided in at least one of the plurality of rotor salient poles. And to a switched reluctance machine comprising such a machine rotor. The switched reluctance motor according to the present invention can reduce pulsation of output torque and improve stability and efficiency during operation of the motor.
Description
Technical field
The present invention relates to a kind of switch reluctance machine rotor, more specifically, relate to a kind of switch reluctance machine rotor of pulsation of the output torque that can reduce switched reluctance machines.Also relate to the switched reluctance machines that adopts above-mentioned rotor.
Background technology
At present, most of frequency-changeable compressor adopts permagnetic synchronous motor as its power part, and permagnetic synchronous motor need to use the rotor that permanent magnet is installed, but the permanent magnet adopting is easy to be subject to the impact of the external factor such as temperature, electric current and produces demagnetization, when serious, cause the permanent loss of excitation of permanent magnet, thereby cause the inefficacy of permagnetic synchronous motor.In addition, permanent magnet is expensive, and therefore rare-earth permanent magnet has particularly limited the range of application of permagnetic synchronous motor.
Switched reluctance machines is due to simplicity of design, sound construction, and is widely used gradually without adopting the advantages such as magnet.Switched reluctance machines has double-salient-pole structure conventionally, is wound with winding in stator salient poles, for the rotation of motor provides excitation.But switched reluctance machines of the prior art magnetic resistance change rate due to rotor with salient pole in operation process is larger, cause the pulsation of its output torque larger, the bad stability while making motor rotation thus, Efficiency Decreasing, the range of application of motor is restricted.For this reason, in prior art, need a kind of pulsation and the stability in raising motor operation course and switched reluctance machines of efficiency that can reduce to export torque.
Summary of the invention
The invention provides a kind of switch reluctance machine rotor, it comprises rotor body and from rotor body outwardly a plurality of rotor with salient pole radially.Wherein, at least one in a plurality of rotor with salient pole, be provided with magnetic resistance increase portion.
According to another aspect of the present invention, provide a kind of switched reluctance machines, it comprises stator and rotor.Stator comprises stator base portion and a plurality of stator salient poles of protruding towards the center of stator from stator base portion, in the periphery of each in a plurality of stator salient poles, is wound with winding.Be arranged in the inner chamber of stator rotor.Wherein, rotor is switch reluctance machine rotor as above.
Accompanying drawing explanation
By the description to embodiment providing referring to accompanying drawing, can more be expressly understood further feature and advantage of the present invention, in the accompanying drawings:
Fig. 1 is the schematic diagram that the general structure of switched reluctance machines of the prior art is shown;
Fig. 2 a-2c is the schematic diagram that rotor with salient pole amplification in diverse location with respect to stator salient poles of the switched reluctance machines in Fig. 1 is shown;
Fig. 3 is according to the schematic diagram of the first embodiment of switched reluctance machines of the present invention;
Fig. 4 is the partial enlarged drawing that the switch reluctance machine rotor in Fig. 3 is shown;
Fig. 5 is the partial enlarged drawing of the structure of the magnet isolation tank on the switch reluctance machine rotor illustrating in Fig. 3;
Fig. 6 is according to the schematic diagram of the second embodiment of switch reluctance machine rotor of the present invention;
Fig. 7 is according to the schematic diagram of the 3rd embodiment of switch reluctance machine rotor of the present invention;
Fig. 8 is the partial enlarged drawing of the switch reluctance machine rotor shown in Fig. 7; And
Fig. 9 is according to the schematic diagram of the 4th embodiment of switch reluctance machine rotor of the present invention.
Embodiment
With reference to the accompanying drawings exemplary embodiment of the present is described in detail.To the description of exemplary embodiment, be only for demonstration object, and be never the restriction to the present invention and application or usage.
Referring to Fig. 1, be briefly described composition structure and the operation principle of switched reluctance machines 10.Switched reluctance machines 10 comprises stator 20 and is arranged on rotatably the rotor 40 in the inner chamber of stator 20, and stator 20 comprises a plurality of stator salient poles 24 of protruding towards stator 20 center from its base portion 22, and stator winding 26 is around the periphery coiling of stator salient poles 24.Rotor 40 comprises rotor body 42 and from rotor body 42 outwardly rotor with salient pole 44 radially.Between the relative end of the end of rotor with salient pole 44 and stator salient poles 24, there is certain gap, make thus the rotor 40 can freely rotation in the inner chamber of stator 20.Stator base portion 22 and stator salient poles 24 and rotor body 42 and rotor with salient pole 44 are all made by the good material of magnetic property.When the stator winding 26 around being wound on each stator salient poles 24 is supplied with electric current by the sequential according to certain, will produce the magnetic field that drives rotor 40 rotations.
The operation principle of switched reluctance machines 10 as above is that magnetic flux is always closed along the path of magnetic permeability maximum.According to above-mentioned principle, for the right rotor with salient pole 44 of the every composition in the rotor 40 of switched reluctance machines 10, by giving along the direction of rotation A of rotor 40, be positioned at the place ahead of paired rotor with salient pole 44 and the winding 26 in the paired stator salient poles 24 nearest with it is supplied with electric currents, make winding 26 produce magnetic fields.Such as, as shown in Figure 1, for paired rotor with salient pole 44-1 and 44-2, be respectively the corresponding paired stator salient poles 24-1 and the winding 26-1 on 24-2 and the 26-2 supply electric current that along direction of rotation A, are positioned at its place ahead, the magnetic field producing on stator salient poles 24-1 and 24-2 forms closed paths along rotor with salient pole 44-1, rotor body 42, rotor with salient pole 44-2 and stator base portion 22.Because magnetic flux tends to along the propagated of magnetic permeability maximum, therefore, rotor with salient pole 44-1 and 44-2 under the effect of magnetic force respectively towards with the nearer position motion of stator salient poles 24-1 and 24-2 distance, thereby form the larger closed path of magnetic permeability, make thus rotor 40 rotate along direction of rotation A.As rotor with salient pole 44-1 and 44-2 respectively with stator salient poles 24-1 and 24-2 radially on time, make winding 26-1 and 26-2 on stator salient poles 24-1 and 24-2 cut off electric current, and make to be positioned at along direction of rotation A winding 26 making current of another group in stator salient poles at stator salient poles 24-1 and 24-2 rear, thus for rotor 40 provides the electromagnetic force that makes its rotation continuously.By corresponding switch element, be controlled in a certain order the electric current on-state of the winding 26 in right stator salient poles 24, thereby make it continue the magnetic field of rotation for rotor 40 provides.
As can be seen here, switched reluctance machines 10 utilizes magnetic resistance change rate generation driving torque to carry out work, but because its magnetic resistance change rate is larger, therefore causes the pulsation of torque output larger.When the position that the rotor with salient pole 44 of the switched reluctance machines 10 anterior lateral margin from it along direction of rotation A is aimed at the rear portion lateral margin along direction of rotation A of corresponding stator salient poles 24 moves to the symmetrical center line OB of this rotor with salient pole 44 with the rear portion lateral margin of stator salient poles 24 is aimed at accordingly position, for the inductance increase region of rotor with salient pole 44, inductance now produces driving torque.As shown in Fig. 2 a and 2b, take rotor with salient pole 44-1 and stator salient poles 24-1 is example, above-mentioned motion process is the position that moves to rotor with salient pole 44-1 as shown in Figure 2 b from the position of rotor with salient pole 44-1 as shown in Figure 2 a, the inductance producing in this process can produce driving torque, and this is desired in the operation process of switched reluctance machines 10.And when rotor with salient pole 44 moves forward, the position of roughly aliging from the posterior lateral margin of the symmetrical center line OB of rotor with salient pole 44 and corresponding stator salient poles 24 moves to the symmetrical center line OB of rotor with salient pole 44 and the symmetrical center line OB of stator salient poles 24 while roughly aliging, for inductance reduces region, inductance now will produce brake torque.As shown in Fig. 2 b and 2c, said process is the position that moves to rotor with salient pole 44-1 as shown in Figure 2 c from the position of rotor with salient pole 44-1 as shown in Figure 2 b, the inductance producing in this process can produce brake torque, and this running for switched reluctance machines 10 is disadvantageous.Can to the winding 26 in corresponding stator salient poles 44, carry out power-off control by on-off controller, thereby avoid producing brake torque.But, owing to there is inductance, cause Current Control to exist and lag behind, therefore affect the output of torque and caused the pulsation of torque output to increase.
As mentioned above, in the operation process of switched reluctance machines 10, the pulsation of output torque that desired is is the smaller the better, and the inductance that namely produces brake torque is the smaller the better.And the effective ways of inductance that reduce on rotor with salient pole 44 that region reduces rotation at inductance are the magnetic resistance that increases rotor with salient pole 44.That is to say that the inductance when moving through inductance and reduce region along direction of rotation A in order to reduce rotor with salient pole 44 need to suitably increase the magnetic resistance of the rear portion along direction of rotation A of rotor with salient pole 44.As shown in Figure 3, in switched reluctance machines 10 according to the present invention, at least one in a plurality of rotor with salient pole 44, be provided with magnet isolation tank 46, advantageously, in each in a plurality of rotor with salient pole 44, be provided with magnet isolation tank 46.Further, magnet isolation tank 46 is formed on the rear portion of the direction of rotation A along rotor 40 of rotor with salient pole 44, and the quantity of the magnet isolation tank 46 on each rotor with salient pole 44 can need to arrange one or more according to design.Magnet isolation tank 46 can or be filled with the relatively large material of magnetic resistance for hollow space, makes the magnetic resistance at magnet isolation tank 46 places much larger than the magnetic resistance of other positions of rotor with salient pole 44, magnet isolation tank 46 can be called to magnetic resistance increase portion thus.At this, it should be noted that, the direction of rotation A along the rotor 40 of switched reluctance machines 10, is called the place ahead or front portion by the orientation identical with direction of rotation A, and the orientation contrary with direction of rotation A is called to rear or rear portion.As shown in Fig. 4 of the partial enlarged drawing of the switched reluctance machines 10 as in Fig. 3, magnet isolation tank 46 is arranged on being positioned in the part at rear portion of symmetrical center line OB along direction of rotation A of rotor with salient pole 44.Advantageously, magnet isolation tank 46 is arranged on the end of the radial direction along rotor 40 of rotor with salient pole 44, that is to say, magnet isolation tank 46 is arranged on the longitudinal end of rotor with salient pole 44.Further, the size of magnet isolation tank 46 diminishes gradually along the direction of rotation A of rotor 40, thereby the magnetic resistance of rotor with salient pole 44 is increased gradually along the contrary direction of the direction of rotation A with rotor 40, and the inductance that makes thus rotor with salient pole 44 reduce in region at inductance when rotated correspondingly reduces.That is to say, inductance when above-mentioned magnet isolation tank 46 can make rotor with salient pole 44 move to the position of the rotor with salient pole 44-1 as shown in Fig. 2 c in the position of the rotor with salient pole 44-1 from as shown in Fig. 2 b thus reduces, and reduces thus by the caused brake torque of inductance.According to the switched reluctance machines 10 that is provided with magnet isolation tank 46 on the rotor with salient pole 44 of rotor 40 of the present invention in the course of the work pulsation of its output torque reduce, and improved the efficiency of motor.
Further, in stator salient poles 44, be provided with from buckle portion 48, from buckle portion 48 be arranged on stator salient poles 44 along in the rear portion of direction of rotation A.In at least one that can be in a plurality of stator salient poles 44, arrange from buckle portion 48, advantageously, in each in a plurality of stator salient poles 44, all arrange from buckle portion 48.Form the lamination of rotor 40 by being riveted together from buckle portion 48, from buckle portion 48, can form square, rectangle, circle or other suitable shapes, it can form by the corresponding material of punching press on each lamination, and the material stamping out can be for being riveted together each lamination regularly.Owing to forming the breaking portion that magnetic resistance is larger from buckle portion 48 or forming the space that does not comprise permeability magnetic material, therefore the magnetic resistance of the rear portion of stator salient poles 44 is increased further.Therefore, can reduce further stator salient poles 44 and rotate the inductance producing while reducing region by inductance, thereby further reduce, by the caused brake torque of inductance, can further reduce thus the pulsation of the output torque of switched reluctance machines 10.
The concrete size characteristic of magnet isolation tank 46 is below described.As shown in Figure 5, magnet isolation tank 46 is arranged on along direction of rotation A on the rear portion of rotor with salient pole 44, and advantageously, the major part of magnet isolation tank 46 is positioned at the rear of symmetrical center line OB along direction of rotation A.Wherein, the direction of rotation A of rotor with salient pole 44, for from right to left, rotates in the drawings in the counterclockwise direction.As can be seen from Figure 5, magnet isolation tank 46 near the symmetrical center line OB of rotor with salient pole 44, extend to rotor with salient pole 44 posterior lateral margin 441 near, and its size along the radial direction of rotor 40 becomes large gradually along direction from left to right, that is to say, the radial dimension of magnet isolation tank 46 increases gradually along the contrary direction of the direction of rotation A with rotor with salient pole 44.The size range of the leading edge 46-1 of the symmetrical center line OB of the close rotor with salient pole 44 of magnet isolation tank 46 and the first distance W 1 of symmetrical center line OB is-3mm to 5mm, that is to say, the leading edge 46-1 of the symmetrical center line OB of the close rotor with salient pole 44 of magnet isolation tank 46 can be positioned at the scope at 3mm place, left side to the 5mm place, right side of symmetrical center line OB.Advantageously, the scope of above-mentioned the first distance W 1 is-1.5mm to 0.5mm.Further, the outer rim 46-2 of the top 442 of the close rotor with salient pole 44 of magnet isolation tank 46 and the size range of the second distance W2 between top 442 are 0mm to 3mm,, magnet isolation tank 46 can be set directly at the top of rotor with salient pole 44, makes magnet isolation tank 46 directly be exposed to outside by the top of rotor with salient pole 44; Or magnet isolation tank 46 also can be arranged on the inside of rotor with salient pole 44, between the outer rim 46-2 of magnet isolation tank 46 and the top 442 of rotor with salient pole 44, there is 3mm with interior but be greater than the spacing of 0mm.Advantageously, the scope of above-mentioned second distance W2 is 0.3mm to 0.8mm.In addition, the size range of the 3rd distance W 3 between the trailing edge 46-3 of the posterior lateral margin 441 of the close rotor with salient pole 44 of magnet isolation tank 46 and the posterior lateral margin 441 of rotor with salient pole 44 is 0mm to 3mm,, magnet isolation tank 46 can be set directly at the right side of rotor with salient pole 44, makes magnet isolation tank 46 directly be exposed to outside by the right side of rotor with salient pole 44; In addition, magnet isolation tank 46 also can be arranged on the inside of rotor with salient pole 44, between the trailing edge 46-3 of magnet isolation tank 46 and the posterior lateral margin 441 of rotor with salient pole 44, has 3mm with interior but be greater than the spacing of 0mm.Advantageously, the scope of above-mentioned the 3rd distance W 3 is 0.3mm to 0.8mm.
According in the rotor 40 of switched reluctance machines of the present invention, magnet isolation tank 46 is along the size of the radial direction of rotor 40, i.e. the radial dimension of magnet isolation tank 46, and the direction contrary along the direction of rotation A with rotor 40 increases gradually.The anterior end of the direction of rotation A along rotor 40 of magnet isolation tank 46 has smallest radial size H1, itself and second distance W2 as above have following relation: smallest radial size H1=0.3mm+K1 * second distance W2, and wherein, K1 is constant, its span is 3 to 5, i.e. 3≤K1≤5.In addition, the last side end of the direction of rotation A along rotor 40 of magnet isolation tank 46 has maximum radial dimension H2, itself and second distance W2 as above have following relation: maximum radial dimension H2=0.3mm+K2 * second distance W2, wherein, K2 is constant, its span is 5 to 8, i.e. 5≤K2≤8.Advantageously, the smallest radial size H1 of magnet isolation tank 46 is 0.3mm to 1.2mm, and the maximum radial dimension H2 of magnet isolation tank 46 is 3mm to 5.2mm.The rear portion along direction of rotation A with the rotor with salient pole 44 that as above magnet isolation tank 46 of size not only can make has the enough magnetic resistance that increase gradually, and can guarantee the requirement of strength of rotor with salient pole 44.
The magnetic resistance that magnet isolation tank 46 can increase rotor with salient pole 44 is set on rotor with salient pole 44, thereby reduce the inductance that rotor with salient pole 44 produces in rotation, rapid cut-off current in the time of can commutating at the on-off controller of switched reluctance machines 10 thus, thereby the brake torque that the lagging current while being conducive to reduce to commutate produces.In addition, due to magnet isolation tank 46, the direction of rotation A along rotor 40 is arranged on the rear portion of rotor with salient pole 44, therefore it does not have influence on the permeance property at part place of the generation driving torque of rotor with salient pole 44,, rotor with salient pole 44 along there is no magnet isolation tank on the front part of direction of rotation A, therefore be conducive to improve rotor with salient pole 44 permeance properties, be convenient to produce the larger magnetic force that makes rotor 40 rotations.As mentioned above, switched reluctance machines 10 according to the present invention can produce larger inductance when its rotor with salient pole 44 rotations increase region through inductance, thereby produce larger output torque, and can promptly reduce inductance when rotor with salient pole 44 rotations reduce region through inductance, thereby the brake torque that reduces to be produced by inductance, the pulsation of switched reluctance machines 10 output torques is reduced, and efficiency is improved.
Further, according to another embodiment of the rotor 40 of switched reluctance machines 10 of the present invention, can between rotor with salient pole 44, arrange and intercept bridge 62, as shown in Figure 6, between every two adjacent rotor with salient pole 44, arrange and intercept bridge 62.Intercept the outermost that bridge 62 is arranged on the space between adjacent rotor with salient pole 44, make the outer ledge and the outer peripheral edges that intercept the outer rim formation rotor 40 of bridge 62 of rotor with salient pole 44.That is to say, the outer ledge of rotor with salient pole 44 forms complete circle jointly with the outer rim that intercepts bridge 62, is the outer peripheral edges of rotor 40.Equally, can rotor with salient pole 44 along magnet isolation tank 46 as above is set on the rear portion of direction of rotation A.Certainly, on rotor with salient pole 44, also can arrange as above from buckle portion 48.According to the magnet isolation tank 46 of the present embodiment with from buckle portion 48 and according to the magnet isolation tank in front described embodiment and basic identical from structure and the operation principle of buckle portion, at this, do not elaborate.The obstruct bridge 62 so arranging can reduce air drag in the rotary course of rotor 40, thereby reduces air abrasion, has also reduced the noise producing due to windage simultaneously.Therefore, the efficiency of switched reluctance machines 10 is according to this embodiment of the invention further improved.
In another embodiment of the rotor 40 of switched reluctance machines 10 according to the present invention, as shown in Figure 7, make the end of rotor with salient pole 44 form step-like.As can be seen from Figure 7, rotor with salient pole 44 along being formed with recess 64 on the rear portion of direction of rotation A, make thus the end of rotor with salient pole 44 form step-like.Recess 64 can form by making second outer rim 446 that is positioned at the rear of its symmetrical center line OB along direction of rotation A of rotor with salient pole 44 have the arc that is positioned at the radius that the radius of the first outer rim 445 in the place ahead is less than rotor with salient pole 44, form thus step-like rotor with salient pole 44, and form stage portion 447 between the first outer rim 445 and the second outer rim 446.That is to say, the circular radius that the first outer rim 445 of a plurality of rotor with salient pole 44 forms is greater than the radius of the second outer rim 446 formed circles of a plurality of rotor with salient pole 44, wherein, the formed circle of the second outer rim 446 of the formed circle of the first outer rim 445 of a plurality of rotor with salient pole 44 and a plurality of rotor with salient pole 44 is concentric circles, and has the same center of circle with rotor body 42.Advantageously, stage portion 447 forms along the symmetrical center line of rotor with salient pole 44.Certainly, the first outer rim 445 of rotor with salient pole 44 and/or the second outer rim 446 of rotor with salient pole 44 can be linear, or can, for having excentric arc, can one of them be also circular arc.Advantageously, the size in the radial direction at rotor 40 of recess 64 increases gradually along the direction contrary with direction of rotation A, also just say, the radial dimension of recess 64 reduces gradually along direction of rotation A, and this is conducive to make the magnetic resistance of rotor with salient pole 44 to increase gradually along the direction contrary with direction of rotation A.As shown in Figure 8, the size range of the height W4 of the stage portion 447 of rotor with salient pole 44 is 0mm to 5mm, that is to say, when the first outer rim 445 and the second outer rim 446 are isocentric circular arc, the arc radius of the first outer rim 445 of rotor with salient pole 44 is than the large 0mm to 5mm of the arc radius of the second outer rim 446, the first outer rim 445 that is rotor with salient pole 44 can be with the second outer rim 446 for having the arc outer rim of same radius, or the arc radius of the first outer rim 445 of rotor with salient pole 44 is than the arc radius of the second outer rim 446 5mm but be greater than 0mm greatly at the most.Advantageously, the scope of the height W4 of stage portion 447 is 2mm to 3.5mm.Recess 64 can form wedge shape, convex arc, concavity arc and analogous shape.According to this embodiment of the invention, as shown in Figure 7 and Figure 8, can on rotor with salient pole 44, arrange from buckle portion 48, form the lamination of rotor body 42 and rotor with salient pole 44 by being riveted together from buckle portion 48, thereby form complete rotor 40.Certainly, also can on the rear portion of rotor with salient pole 44, form magnet isolation tank 46 as above.By being formed on recess 64 on the end of rotor with salient pole 44, can increase the magnetic resistance of rotor with salient pole 44, thereby while reducing rotor 40 rotation, be created in the inductance on rotor with salient pole 44, thus can in the situation that on-off controller when commutation of switched reluctance machines 10 turn-off rapidly the electric current of the winding 26 in corresponding stator salient poles 24, inductance in rotor with salient pole 44 is reduced rapidly, thus the brake torque that reduces to be produced by inductance.By this structure, can reduce the pulsation of the output torque of switched reluctance machines 10, and therefore improve the efficiency of motor.Equally, by magnet isolation tank 46 being set on rotor with salient pole 44 and/or from buckle portion 48, can further reduce switched reluctance machines 10 output torque pulsation and improve its efficiency.Further, as shown in Figure 9, also can between two rotor with salient pole 44 of arbitrary neighborhood, arrange and intercept bridge 62.Intercept the 26S Proteasome Structure and Function of bridge 62 with identical with reference to the embodiment described in Fig. 6, at this, do not repeat.
Below switch reluctance machine rotor according to the present invention and corresponding switched reluctance machines are done with generality explanation.
According to switch reluctance machine rotor of the present invention embodiment, in each in a plurality of rotor with salient pole, be provided with magnetic resistance increase portion.
According to another embodiment of switch reluctance machine rotor of the present invention, magnetic resistance increase portion is arranged on the end of rotor with salient pole.
According in another embodiment of switch reluctance machine rotor of the present invention, magnetic resistance increase portion is arranged on the rear portion of the direction of rotation along rotor of rotor with salient pole.
According to another embodiment of switch reluctance machine rotor of the present invention, above-mentioned magnetic resistance increase portion is magnet isolation tank.
According in another embodiment of switch reluctance machine rotor of the present invention, the radial dimension of magnet isolation tank increases gradually along the direction contrary with direction of rotation.
According to another embodiment of switch reluctance machine rotor of the present invention, magnet isolation tank near the symmetrical center line of rotor with salient pole, extend to rotor with salient pole posterior lateral margin near.
According in another embodiment of switch reluctance machine rotor of the present invention, between the radial symmetric center line of the leading edge of magnet isolation tank and rotor with salient pole first distance is in the scope of-3mm to 5mm, wherein, negative value represents that leading edge is positioned at the place ahead of radial symmetric center line along direction of rotation.Advantageously, above-mentioned the first distance is in the scope of-1.5mm to 0.5mm.
According to another embodiment of switch reluctance machine rotor of the present invention, the second distance between the outer rim of magnet isolation tank and the top of rotor with salient pole is 0mm to 3mm.Advantageously, this second distance is 0.3mm to 0.8mm.
According in an also embodiment of switch reluctance machine rotor of the present invention, the 3rd between the trailing edge of magnet isolation tank and the posterior lateral margin of rotor with salient pole is apart from being 0mm to 3mm.Advantageously, the 3rd distance is 0.3mm to 0.8mm.
According to another embodiment of switch reluctance machine rotor of the present invention, between the smallest radial size of magnet isolation tank and above-mentioned second distance, meet following relation: smallest radial size=0.3mm+K1 * second distance, wherein, 3≤K1≤5.Advantageously, the scope of the smallest radial size of magnet isolation tank is 0.3mm to 1.2mm.
According in another embodiment of switch reluctance machine rotor of the present invention, between the maximum radial dimension of magnet isolation tank and above-mentioned second distance, meet following relation: maximum radial dimension=1.5mm+K2 * second distance, wherein, 5≤K2≤8.Advantageously, the scope of the maximum radial dimension of magnet isolation tank is 3mm to 5.2mm.
According to an also embodiment of switch reluctance machine rotor of the present invention, magnetic resistance increase portion is each the recess of end being arranged in rotor with salient pole.
According in another embodiment of switch reluctance machine rotor of the present invention, recess from the posterior lateral margin of rotor with salient pole, extend to rotor with salient pole symmetrical center line near.
According to another embodiment of switch reluctance machine rotor of the present invention, recess extends to the symmetrical center line of rotor with salient pole from the posterior lateral margin of rotor with salient pole.
According in an also embodiment of switch reluctance machine rotor of the present invention, recess extend to symmetrical center line near end form stage portion, the height of stage portion is 0mm to 5mm.Advantageously, the height of stage portion is 2mm to 3.5mm.
According to another embodiment of switch reluctance machine rotor of the present invention, second outer rim at the rear that is positioned at stage portion of rotor with salient pole is circular arc.
According in an also embodiment of switch reluctance machine rotor of the present invention, the radial dimension of recess increases gradually along the contrary direction of the direction of rotation with rotor.
According to another embodiment of switch reluctance machine rotor of the present invention, wherein, at least one in a plurality of rotor with salient pole, be provided with from buckle portion.
According in another embodiment of switch reluctance machine rotor of the present invention, in each in a plurality of rotor with salient pole, be provided with from buckle portion.
According to another embodiment of switch reluctance machine rotor of the present invention, from buckle portion, be arranged on the rear portion of the direction of rotation along rotor of rotor with salient pole.
According in an also embodiment of switch reluctance machine rotor of the present invention, between the outer rim of two rotor with salient pole of arbitrary neighborhood, be provided with obstruct bridge.
According to another embodiment of switch reluctance machine rotor of the present invention, intercept the outer peripheral edges that the outer rim of bridge and the outer rim of rotor with salient pole form the circular of rotor.
According in switched reluctance machines of the present invention embodiment, stator comprises 18 stator salient poles.
According to another embodiment of switched reluctance machines of the present invention, rotor comprises 12 rotor with salient pole.
Although with reference to illustrative embodiments, invention has been described, but be to be understood that, the present invention is not limited to the embodiment of describing in detail and illustrating in literary composition, in the situation that not departing from claims limited range, those skilled in the art can make various changes to described illustrative embodiments.
Claims (36)
1. a switch reluctance machine rotor (40), comprising:
Rotor body (42); With
A plurality of rotor with salient pole (44), described a plurality of rotor with salient pole (44) are radially outwardly from described rotor body (42),
Wherein, at least one in described a plurality of rotor with salient pole (44), be provided with magnetic resistance increase portion (46,64).
2. switch reluctance machine rotor as claimed in claim 1 (40), wherein, is provided with described magnetic resistance increase portion (46,64) in each in described a plurality of rotor with salient pole (44).
3. switch reluctance machine rotor as claimed in claim 1 (40), wherein, described magnetic resistance increase portion (46,64) is arranged on the end of described rotor with salient pole (44).
4. switch reluctance machine rotor as claimed in claim 1 (40), wherein, described magnetic resistance increase portion (46,64) is arranged on the rear portion of the direction of rotation along described rotor (40) (A) of described rotor with salient pole (44).
5. the switch reluctance machine rotor (40) as described in any one in claim 1-4, wherein, described magnetic resistance increase portion (46,64) is magnet isolation tank (46).
6. switch reluctance machine rotor as claimed in claim 5 (40), wherein, the radial dimension of described magnet isolation tank (46) increases gradually along the direction contrary with described direction of rotation (A).
7. switch reluctance machine rotor as claimed in claim 5 (40), wherein, described magnet isolation tank (46) near the symmetrical center line (OB) of described rotor with salient pole (44), extend to described rotor with salient pole (44) posterior lateral margin (441) near.
8. switch reluctance machine rotor as claimed in claim 7 (40), wherein, between the leading edge (46-1) of described magnet isolation tank (46) and the radial symmetric center line (OB) of described rotor with salient pole (44) first distance (W1) is in the scope of-3mm to 5mm, wherein, negative value represents that described leading edge (46-1) is positioned at the place ahead of described radial symmetric center line (OB) along described direction of rotation (A).
9. switch reluctance machine rotor as claimed in claim 8 (40), wherein, described the first distance (W1) is in the scope of-1.5mm to 0.5mm.
10. switch reluctance machine rotor as claimed in claim 7 (40), wherein, the second distance (W2) between the outer rim (46-2) of described magnet isolation tank (46) and the top (442) of described rotor with salient pole (44) is 0mm to 3mm.
11. switch reluctance machine rotors as claimed in claim 10 (40), wherein, described second distance (W2) is 0.3mm to 0.8mm.
12. switch reluctance machine rotors as claimed in claim 7 (40), wherein, the distance of the 3rd between the trailing edge (46-3) of described magnet isolation tank (46) and the posterior lateral margin (441) of described rotor with salient pole (44) (W3) is 0mm to 3mm.
13. switch reluctance machine rotors as claimed in claim 12 (40), wherein, described the 3rd distance (W3) is 0.3mm to 0.8mm.
14. switch reluctance machine rotors as claimed in claim 10 (40), wherein, meet following relation between the smallest radial size (H1) of described magnet isolation tank (46) and described second distance (W2):
Smallest radial size (H1)=0.3mm+K1 * second distance (W2),
Wherein, 3≤K1≤5.
15. switch reluctance machine rotors as claimed in claim 14 (40), wherein, the scope of the smallest radial size (H1) of described magnet isolation tank (46) is 0.3mm to 1.2mm.
16. switch reluctance machine rotors as claimed in claim 10 (40), wherein, meet following relation between the maximum radial dimension (H2) of described magnet isolation tank (46) and described second distance (W2):
Maximum radial dimension (H2)=1.5mm+K2 * second distance (W2),
Wherein, 5≤K2≤8.
17. switch reluctance machine rotors as claimed in claim 16 (40), wherein, the scope of the maximum radial dimension (H2) of described magnet isolation tank (46) is 3mm to 5.2mm.
18. switch reluctance machine rotors as claimed in claim 1 (40), wherein, described magnetic resistance increase portion (46,64) is for being arranged on each the recess (64) of end in described rotor with salient pole (44).
19. switch reluctance machine rotors as claimed in claim 18 (40), wherein, described recess (64) from the posterior lateral margin (441) of described rotor with salient pole (44), extend to described rotor with salient pole (44) symmetrical center line (OB) near.
20. switch reluctance machine rotors as claimed in claim 19 (40), wherein, described recess (64) extends to the described symmetrical center line (OB) of described rotor with salient pole (44) from the described posterior lateral margin (441) of described rotor with salient pole (44).
21. switch reluctance machine rotors as claimed in claim 19 (40), wherein, described recess (64) extend to described symmetrical center line (OB) near end form stage portion (447), the height (W4) of described stage portion (447) is 0mm to 5mm.
22. switch reluctance machine rotors as claimed in claim 21 (40), wherein, the height (W4) of described stage portion (447) is 2mm to 3.5mm.
23. switch reluctance machine rotors as claimed in claim 21 (40), wherein, second outer rim (446) at the rear that is positioned at described stage portion (447) of described rotor with salient pole (44) is circular arc.
24. switch reluctance machine rotors as claimed in claim 19 (40), wherein, the radial dimension of described recess (64) increases gradually along the contrary direction of the direction of rotation with described rotor (40) (A).
25. switch reluctance machine rotors as claimed in claim 5 (40), wherein, are provided with from buckle portion (48) at least one in described a plurality of rotor with salient pole (44).
26. switch reluctance machine rotors as claimed in claim 25 (40), wherein, are provided with from buckle portion (48) in each in described a plurality of rotor with salient pole (44).
27. switch reluctance machine rotors as claimed in claim 25 (40), wherein, are describedly arranged on the rear portion of the direction of rotation along described rotor (40) (A) of described rotor with salient pole (44) from buckle portion (48).
28. switch reluctance machine rotors (40) as described in any one in claim 18-24, wherein, are provided with from buckle portion (48) at least one in described a plurality of rotor with salient pole (44).
29. switch reluctance machine rotors as claimed in claim 5 (40) wherein, are provided with and intercept bridge (62) between the outer rim of two described rotor with salient pole (44) of arbitrary neighborhood.
30. switch reluctance machine rotors as claimed in claim 29 (40), wherein, the outer rim of the outer rim of described obstruct bridge (62) and described rotor with salient pole (44) forms the outer peripheral edges of the circular of described rotor (40).
31. switch reluctance machine rotors (40) as described in any one in claim 18-24 wherein, are provided with and intercept bridge (62) between the outer rim of two described rotor with salient pole (44) of arbitrary neighborhood.
32. switch reluctance machine rotors as claimed in claim 25 (40) wherein, are provided with and intercept bridge (62) between the outer rim of two described rotor with salient pole (44) of arbitrary neighborhood.
33. switch reluctance machine rotors as claimed in claim 28 (40) wherein, are provided with and intercept bridge (62) between the outer rim of two described rotor with salient pole (44) of arbitrary neighborhood.
34. 1 kinds of switched reluctance machines (10), comprising:
Stator (20), described stator (20) comprises stator base portion (22) and a plurality of stator salient poles (24) of protruding towards the center of described stator (20) from described stator base portion, is wound with winding (26) in the periphery of each in described a plurality of stator salient poles (24); With
Rotor is arranged in the inner chamber of described stator (20) described rotor,
Wherein, described rotor is the switch reluctance machine rotor (40) as described in any one in claim 1-33.
35. switched reluctance machines as claimed in claim 34 (10), wherein, described stator (20) comprises 18 described stator salient poles (24).
36. switched reluctance machines (10) as described in claim 34 or 35, wherein, described rotor (40) comprises 12 rotor with salient pole (44).
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| CN201310050266.2A CN103986256B (en) | 2013-02-07 | 2013-02-07 | Switched reluctance motor rotor and motor thereof |
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| CN201310050266.2A CN103986256B (en) | 2013-02-07 | 2013-02-07 | Switched reluctance motor rotor and motor thereof |
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| CN103986256B CN103986256B (en) | 2016-08-10 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104410247A (en) * | 2014-12-12 | 2015-03-11 | 廖新春 | Acute angle magnetic damper |
| CN105370582A (en) * | 2014-08-26 | 2016-03-02 | 杭州三花研究院有限公司 | Electronic water pump |
| WO2016079446A1 (en) * | 2014-11-20 | 2016-05-26 | Valeo Systemes De Controle Moteur | Electrical machine |
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| CN203151246U (en) * | 2013-02-07 | 2013-08-21 | 艾默生环境优化技术(苏州)有限公司 | Switched reluctance motor rotor and motor thereof |
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| WO2016079446A1 (en) * | 2014-11-20 | 2016-05-26 | Valeo Systemes De Controle Moteur | Electrical machine |
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| CN103986256B (en) | 2016-08-10 |
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