CN105207434A - Rotor lamination for switched reluctance motors and switched reluctance motor - Google Patents
Rotor lamination for switched reluctance motors and switched reluctance motor Download PDFInfo
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- CN105207434A CN105207434A CN201410283115.6A CN201410283115A CN105207434A CN 105207434 A CN105207434 A CN 105207434A CN 201410283115 A CN201410283115 A CN 201410283115A CN 105207434 A CN105207434 A CN 105207434A
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- switched reluctance
- reluctance motor
- rotor
- recess
- tooth
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Abstract
The invention relates to a rotor lamination for switched reluctance motors, comprising a ring-shaped body and multiple tooth poles protruding from the body in the radial direction. A center hole used for receiving a rotor shaft is formed in the body. Each tooth pole has a free end, a first side which is disposed between the free end and the body and long the radial direction, and a second side which is disposed between the free end and the body, along the radial direction and opposite to the first side. At least one notch is formed on all the first or second sides of the multiple tooth poles. The invention further relates to a switched reluctance motor including the rotor lamination. According to the invention, the torque ripple of the switched reluctance motor can be reduced significantly.
Description
Technical field
The present invention relates to a kind of switched reluctance motor, especially relate to for switched reluctance motor rotor pack and comprise the switched reluctance motor of this rotor pack.
Background technology
The same with conventional electric motor, switched reluctance motor also comprises stators and rotators.The stator core of switched reluctance motor forming with to the silicon steel sheet of projecting inward tooth pole is stacked by punching, and stator core each tooth extremely on be wound with coil, as the excitation winding providing operating fields.The rotor core of switched reluctance motor forms by the silicon steel sheet with outwardly tooth pole of punching is stacked, but extremely goes up at each tooth of rotor core and be not wound with coil.The principle that switched reluctance motor mainly always closes along the path that magnetic resistance is minimum according to magnetic flux is run.
Switched reluctance motor is double-salient-pole structure, due to rotor both having permanent magnet without winding yet, and only has on stator and has winding, and therefore, switched reluctance motor has that structure is simple, sturdy and durable, cost is low, high reliability.But, on the other hand, due to stator tooth pole and rotor tooth extremely overlapping before the edge flux that produces cause current non-linear to change and epitrochanterian torque is formed by stacking by a series of pulsating torque, therefore, there is intrinsic torque pulsation in switched reluctance motor, especially when slowly running, torque pulsation is larger.Which has limited the application scenario of switched reluctance motor, especially limit it in the application needing low speed even running occasion.
Therefore, need to improve existing switched reluctance motor.
Summary of the invention
Object of the present invention will overcome above-mentioned at least one defect of the prior art exactly, propose a kind of rotor pack for switched reluctance motor and comprise the switched reluctance motor of this rotor pack, the torque pulsation of switched reluctance motor can be reduced by them significantly.
For this reason, according to an aspect of the present invention, a kind of rotor pack for switched reluctance motor is provided, comprises:
The body of ring-type, described body is formed with the centre bore for receiving armature spindle; And
From multiple tooth poles that described body radially outward protrudes, each tooth has free end, between described free end with described body the first side radially and between described free end and described body radially and second side contrary with described first side;
Wherein, all first sides of described multiple tooth pole or all second sides are formed with at least one recess.
Preferably, described recess has the inner boundary of smooth smoothness.
Preferably, described recess semicircular in shape, U-shaped, Ω shape or arc.
Preferably, the described recess extremely gone up of each tooth is equal to the distance of described body central.
Preferably, the shape of described recess that extremely goes up of each tooth is identical.
According to a further aspect in the invention, a kind of switched reluctance motor is provided, comprises:
Stator, described stator has multiple radially inner tooth pole, each tooth extremely on be wrapped coil windings; And
To be arranged in described stator and the rotor that can rotate wherein, described rotor comprises rotating shaft and to be arranged in described rotating shaft and the multiple rotor packs stacked together;
Wherein, described multiple rotor pack is rotor pack as above.
Preferably, the same position that the respective teeth that is formed in the recess that each tooth of described multiple rotor pack is extremely gone up extremely goes up.
Preferably, the same position that the respective teeth that is formed in the recess that in described multiple rotor pack, just the stacked tooth of alignment is extremely gone up mutually extremely goes up.
Preferably, described switched reluctance motor has 12 stator tooth poles and 8 rotor tooth poles.
Preferably, described switched reluctance motor is the single direction rotation switched reluctance motor rotated towards the direction being formed with recess side.
According to the present invention, by being formed with recess on all first sides or all second sides of described multiple tooth pole, when switched reluctance motor rotates towards the direction being formed with recess side, the torque pulsation of switched reluctance motor reduces significantly, thus switched reluctance motor is applied to need the occasion of low speed even running.
Accompanying drawing explanation
Fig. 1 is the schematic diagram according to the rotor pack for switched reluctance motor of the present invention;
Fig. 2 is the cross sectional representation of the stators and rotators of display switch reluctance motor;
Fig. 3 is the Driving Torque of switched reluctance motor and the schematic diagram of time Relationship that display adopts existing rotor pack;
Fig. 4 be display adopt according to the switched reluctance motor of rotor pack of the present invention towards tooth extremely on be formed with recess side direction rotate time Driving Torque and the schematic diagram of time Relationship; And
Fig. 5 is that display adopts according to the switched reluctance motor of the rotor pack of the present invention schematic diagram at the Driving Torque extremely gone up towards tooth when the direction not being formed with recess side rotates and time Relationship.
Embodiment
The preferred embodiments of the present invention are described in detail below in conjunction with example.It will be understood by those skilled in the art that these exemplary embodiments and do not mean that and any restriction is formed to the present invention.
Fig. 1 is the schematic diagram according to the rotor pack for switched reluctance motor of the present invention.As shown in Figure 1, the rotor pack 1 for switched reluctance motor of the present invention adopts mode commonly known in the art to be usually stamped to form by silicon steel sheet, the body 3 that it comprises ring-type substantially and multiple tooth poles 5 of radially outward protruding from the body 3 of ring-type.The centre bore 7 of the body 3 of ring-type for receiving armature spindle (not shown), rotor pack 1 is set on armature spindle.Although show 8 tooth poles in FIG, be understood that the number of tooth pole can be less than or more than 8.Each tooth pole 5 has free end 5a, the first side 5b between free end 5a with body 3 and radially and between free end 5a and body 3 and radially and the second side 5c contrary with the first side 5b.
According to the present invention, on the first side 5b of each tooth pole 5 of the rotor pack 1 of switched reluctance motor, be formed with recess 5d.In order to easy to process, recess 5d preferably has the inner boundary of smooth smoothness.More preferably, recess 5d semicircular in shape, U-shaped, Ω shape or arc.Although the recess 5d on the first side 5b of each tooth pole 5 can change to the distance at body 3 center, the recess 5d on the first side 5b of preferably each tooth pole 5 is equal to the distance at body 3 center.In addition, although the shape of the recess 5d on the first side 5b of each tooth pole 5 can be different, the shape of the recess 5d on the first side 5b of preferably each tooth pole 5 is identical.
Fig. 2 is the cross sectional representation of the stators and rotators of display switch reluctance motor.As shown in Figure 2, switched reluctance motor 10 comprises stator 11, and stator 11 has 12 radially inner tooth poles 13, and each tooth pole 13 is wrapped coil windings 15.Switched reluctance motor 10 also comprises and being arranged in stator 11 and the rotor 17 that can rotate in stator 11.Rotor 17 comprises rotating shaft 19 and to be arranged in rotating shaft 19 and the multiple rotor packs 21 stacked together.Each rotor pack 21 has 8 radially outer rotor tooth poles 5.Number when the stator tooth pole and rotor tooth pole that it should be understood that switched reluctance motor can become more or less as required.
In order to verify the effect according to the rotor pack for switched reluctance motor of the present invention, present inventor has carried out emulation experiment.For the switched reluctance motor with 12 stator tooth poles and 8 rotor tooth poles 5 shown in Fig. 2, wherein, the outside dimension of stator 11 is 140mm, the outside dimension of rotor 17 is 80mm, the diameter of rotating shaft 19 is 30mm, to be arranged in rotating shaft 19 and the longitudinal length of the multiple rotor packs 21 stacked together is 110mm, and width and the length of rotor tooth pole 5 are about 11.1mm and 9.6mm respectively, void dimension between rotor 17 and stator 11 is 0.5mm, coil windings 15 three-phase windings.Assuming that the specified Driving Torque of switched reluctance motor is 23Nm and rated speed is 2823rpm.Assuming that torque pulsation to be defined as the percentage of difference divided by average Driving Torque (specified Driving Torque) of maximum output torque and minimum Driving Torque.
When above-mentioned condition remains unchanged, first to adopting the Driving Torque of switched reluctance motor of existing rotor pack to test, the either side of wherein each tooth pole of existing rotor pack does not form recess.Fig. 3 shows the switched reluctance motor adopting existing rotor pack Driving Torque that is clockwise or that counterclockwise rotate and the relation between the time.Result according to Fig. 3 display can draw, adopts the torque pulsation of the switched reluctance motor of existing rotor pack to be about 38.3%.
Then employing is tested according to the Driving Torque of the switched reluctance motor of rotor pack of the present invention, first side 5b of wherein each tooth pole 5 of each rotor pack is formed with such as semicircular recess 5d, wherein semicircular radius is about 2mm, and semicircular centre distance free end 5a is about 3.5mm.Fig. 4 shows switched reluctance motor Driving Torque and the relation between the time when adopting the switched reluctance motor of this rotor pack of the present invention counter clockwise direction (that is, towards the direction being formed with recess 5d side) to rotate.Result according to Fig. 4 display can draw, when adopting the switched reluctance motor of this rotor pack of the present invention to rotate towards the direction being formed with recess side, the torque pulsation of switched reluctance motor is about 17.4%, and this reduces significantly compared with adopting the torque pulsation of the switched reluctance motor of existing rotor pack.The notch edge effect of reduction mainly due to rotor pack being formed of torque pulsation, this edge effect will cause the change of motor inductance parameter.By the change of now inductance parameters, motor torque ripple problem obtains to be improved to a certain extent.
But the torque pulsation of switched reluctance motor but unexpectedly increases when adopting the switched reluctance motor clockwise direction (that is, towards the direction not being formed with recess 5d side) of this rotor pack of the present invention to rotate.Fig. 5 shows switched reluctance motor Driving Torque and the relation between the time when adopting the switched reluctance motor clockwise direction (that is, towards the direction not being formed with recess 5d side) of this rotor pack of the present invention to rotate.Result according to Fig. 5 display can draw, when adopting the switched reluctance motor of this rotor pack of the present invention to rotate towards the direction not being formed with recess side, the torque pulsation of switched reluctance motor is about 43.5%, and this is even greater than the torque pulsation of the switched reluctance motor adopting existing rotor pack.
Present inventor also confirms by experiment, the first side 5b and the second side 5c of each tooth pole 5 of each rotor pack are formed recess neither be very desirable for the effect of torque pulsation reducing switched reluctance motor, but can form the torque pulsation that multiple recess 5d also can reduce switched reluctance motor significantly on the upper all first side 5b of the first side 5b of each tooth pole 5 of each rotor pack and the second side 5c or all second side 5c.
According to the experimental result of Figure 4 and 5 display, be equipped with according to the switched reluctance motor of the rotor pack for switched reluctance motor of the present invention just when rotating towards the direction being formed with recess side torque pulsation can reduce significantly, and torque pulsation change is very little when rotating towards the direction not being formed with recess side, even may increase.Therefore, the rotor pack for switched reluctance motor of the present invention is mainly applicable to the switched reluctance motor of single direction rotation or most of the time single direction rotation, switched reluctance motor such as, in electric automobile used.
Below in conjunction with specific embodiments to invention has been detailed description.Obviously, above description and embodiment illustrated in the accompanying drawings all should be understood to be exemplary, and are not construed as limiting the invention.Such as, in a preferred embodiment, recess is formed on the first side of each tooth pole, is understood that on the second side that recess is formed in each tooth pole be also feasible.In addition, although in a preferred embodiment, the same position that the respective teeth that is formed in the recess that each tooth of all rotor packs of the rotor of switched reluctance motor is extremely gone up extremely goes up, but it is also feasible for it should be understood that in all rotor packs that recess that just the stacked tooth of alignment is extremely gone up mutually is formed in the same position that respective teeth extremely goes up.And it is also feasible for forming multiple recess on the same side of each tooth pole.To those skilled in the art, can carry out various modification or amendment when not departing from spirit of the present invention to it, these modification or amendment all do not depart from the scope of the present invention.
Claims (10)
1. the rotor pack for switched reluctance motor (1), comprising:
The body (3) of ring-type, described body (3) is formed with the centre bore (7) for receiving armature spindle; And
From multiple tooth poles (5) that described body (3) radially outward protrudes, each tooth pole (5) have free end (5a), to be positioned between described free end (5a) with described body (3) the first side (5b) radially and to be positioned between described free end (5a) and described body (3) radially and second side (5c) contrary with described first side (5b);
Wherein, all first sides (5b) of described multiple tooth pole (5) or all second sides (5c) are formed with at least one recess (5d).
2. the rotor pack for switched reluctance motor according to claim 1 (1), is characterized in that, described recess (5d) has the inner boundary of smooth smoothness.
3. the rotor pack for switched reluctance motor according to claim 1 (1), is characterized in that, described recess (5d) semicircular in shape, U-shaped, Ω shape or arc.
4. the rotor pack for switched reluctance motor according to claim 1 (1), is characterized in that, the described recess (5d) on each tooth pole (5) is equal to the distance at described body (3) center.
5. the rotor pack for switched reluctance motor according to claim 1 (1), is characterized in that, the shape of the described recess (5d) on each tooth pole (5) is identical.
6. a switched reluctance motor, comprising:
Stator (11), described stator (11) has multiple radially inner tooth pole (13), and each tooth pole (13) is wrapped coil windings (15); And
To be arranged in described stator (11) and the rotor (17) that can rotate wherein, described rotor (17) comprises rotating shaft (19) and is arranged on the upper and multiple rotor packs stacked together of described rotating shaft (19);
Wherein, described multiple rotor pack be as arbitrary in claim 1-5 as described in rotor pack.
7. switched reluctance motor according to claim 6, is characterized in that, the recess that each tooth of described multiple rotor pack is extremely gone up is formed in the same position that respective teeth extremely goes up.
8. switched reluctance motor according to claim 6, is characterized in that, the recess that in described multiple rotor pack, just the stacked tooth of alignment is extremely gone up mutually is formed in the same position that respective teeth extremely goes up.
9. switched reluctance motor according to claim 6, is characterized in that, described switched reluctance motor has 12 stator tooth poles and 8 rotor tooth poles.
10. switched reluctance motor according to claim 6, is characterized in that, described switched reluctance motor is the single direction rotation switched reluctance motor rotated towards the direction being formed with recess side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410283115.6A CN105207434A (en) | 2014-06-23 | 2014-06-23 | Rotor lamination for switched reluctance motors and switched reluctance motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410283115.6A CN105207434A (en) | 2014-06-23 | 2014-06-23 | Rotor lamination for switched reluctance motors and switched reluctance motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105207434A true CN105207434A (en) | 2015-12-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410283115.6A Pending CN105207434A (en) | 2014-06-23 | 2014-06-23 | Rotor lamination for switched reluctance motors and switched reluctance motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105207434A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111769662A (en) * | 2020-06-02 | 2020-10-13 | 珠海格力电器股份有限公司 | Rotor assembly and switched reluctance motor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1950991A (en) * | 2004-11-17 | 2007-04-18 | 丰田自动车株式会社 | Vehicle drive system and vehicle comprising it |
| CN2930067Y (en) * | 2006-07-21 | 2007-08-01 | 卧龙电气集团股份有限公司 | Large torque rotor punching sheet |
| CN201504132U (en) * | 2009-09-29 | 2010-06-09 | 河北工业大学 | Rotor structure for switched reluctance motor |
| CN101764493A (en) * | 2010-03-10 | 2010-06-30 | 天津大学 | Switched reluctance motor |
| DE102012222624A1 (en) * | 2012-12-10 | 2014-06-12 | Robert Bosch Gmbh | Rotor for electrochemical combustion engine used in switched reluctance machine, has rotor tooth with nose that is protruded transverse to radial direction of rotor main portion |
-
2014
- 2014-06-23 CN CN201410283115.6A patent/CN105207434A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1950991A (en) * | 2004-11-17 | 2007-04-18 | 丰田自动车株式会社 | Vehicle drive system and vehicle comprising it |
| CN2930067Y (en) * | 2006-07-21 | 2007-08-01 | 卧龙电气集团股份有限公司 | Large torque rotor punching sheet |
| CN201504132U (en) * | 2009-09-29 | 2010-06-09 | 河北工业大学 | Rotor structure for switched reluctance motor |
| CN101764493A (en) * | 2010-03-10 | 2010-06-30 | 天津大学 | Switched reluctance motor |
| DE102012222624A1 (en) * | 2012-12-10 | 2014-06-12 | Robert Bosch Gmbh | Rotor for electrochemical combustion engine used in switched reluctance machine, has rotor tooth with nose that is protruded transverse to radial direction of rotor main portion |
Non-Patent Citations (1)
| Title |
|---|
| 孙剑波等: "开关磁阻电机降噪的新结构探索", 《微电机》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111769662A (en) * | 2020-06-02 | 2020-10-13 | 珠海格力电器股份有限公司 | Rotor assembly and switched reluctance motor |
| CN111769662B (en) * | 2020-06-02 | 2022-10-25 | 珠海格力电器股份有限公司 | Rotor assembly and switched reluctance motor |
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Application publication date: 20151230 |
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