CN104362821A - Multistage outer-rotor switched reluctance motor - Google Patents
Multistage outer-rotor switched reluctance motor Download PDFInfo
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- CN104362821A CN104362821A CN201410545514.5A CN201410545514A CN104362821A CN 104362821 A CN104362821 A CN 104362821A CN 201410545514 A CN201410545514 A CN 201410545514A CN 104362821 A CN104362821 A CN 104362821A
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Abstract
A multistage outer-rotor switched reluctance motor comprises stators, rotor cores, a shaft, bearings, a casing, end covers and the like. Each stator comprises a stator core and an exciting coil, a plurality of pole shoes are arranged on the stator core, a trench for holding the exciting coil is formed in the middle of the stator core, and the pole shoes are arranged on two sides of the trench in a staggered manner. Pole shoes identical in number of those of each stator core are arranged on the inner circumference of each rotor core correspondingly. A set of stator core and rotor core forms a 'unitary independent magnetic circuit closure body', and a plurality sets of stator cores and rotor cores are in series connection organically (figure 1) to form the multistage outer-rotor switched reluctance motor. When program control currents are galvanized to the exciting coils, a corresponding magnetic field is generated, and an independent closed magnetic circuit is formed. According to the reluctance principle, the magnetic field generates magnetic pull between the stator pole shoes and the rotor pole shoes, and magnetic pull pulls an outer rotor to rotate. The multistage outer-rotor switched reluctance motor has the advantages of small noise and vibration, high efficiency, power and torque, stepless speed control, simple structure, low cost, convenience in manufacture and the like.
Description
Technical field
The present invention relates to machine field, particularly multistage outer rotor switched reluctance motor.
Background technology
Pole shoe on the stator and rotor iron core of existing switched reluctance machines is linear arrangement, magnetizing coil is placed on each pole shoe of stator core, only some pole shoe coil electricity work during operation, some pole shoe coil no power, namely only some pole shoe produces magnetic pull.When stator pole shoes magnetizing coil is after programme-controlled circulation in turn switching electricity, in the pole shoe of stator and rotor iron core, produce magnetic field, by magnetic pull drive motor rotor turns.
Its coiling process cumbersome of the motor of this version, be difficult to manufacture high-power, large-torque outer rotor switched reluctance machines, and the magnetic pull that stator and rotor iron core is subject to is not be evenly distributed on the week of iron core garden, thus cause iron core deflection large, make that motor operationally vibrates greatly, noise is large.Here it is at present such motor ubiquity and insoluble technical barrier is also basic place affect its popularization, popularization and application.
Summary of the invention
The object of this invention is to provide magnetic pull that the pole shoe on a kind of stator and rotor iron core is subject to can be evenly distributed on iron core garden week upper, magnetizing coil make simple and easy, simple and compact for structure, easily manufactured, can realize high-power, high-torque, stepless stepless speed control and noise low, vibrate the multistage outer rotor switched reluctance motor of little high efficiency.
For achieving the above object, present invention employs following technical scheme: a kind of multistage (secondary and more than) outer rotor switched reluctance motor, comprise stator, rotor, rotating shaft and be fixed on casing, the end cap of rotor exterior, rotor is enclosed within the outside of stator core, forms external rotor form.The centre bore of stator core is provided with rotating shaft, and bearing is installed in rotating shaft.The stationary part of multistage outer rotor switched reluctance motor is made up of through series connection the unit stator (comprising stator core and field winding coil) of multiple " unit independent magnetic circuit closed shape "; Rotor portion is also be made up of through series connection the rotor core of multiple " unit independent magnetic circuit closed shape "; Thus realize high-torque, high-power multistage outer rotor switched reluctance motor.
In described " unit independent magnetic circuit closed shape ", stator and rotor iron core is formed (also can use other magnetic material) by silicon steel plate stacking.Stator core is provided with magnetizing coil and is placed in the groove of stator core middle part, and the pole shoe on stator core is staggered on the both sides (can stagger mutually in principle arbitrarily angled, but 1/2nd pole shoes that stagger being apart from being the best) of groove; Described rotor core is provided with the rotating pole-piece equal with stator pole shoes quantity equally, and corresponding one by one with stator pole shoes, rotor core middle part offers groove equally, corresponding with the groove on stator core.
One group of stator and rotor iron core like this and magnetizing coil just constitute one " unit independent magnetic circuit closed shape ", and its magnetic circuit is similar to helix tube magnetic circuit or transformer magnetic circuit.When stator excitation coil is energized, in stator and rotor iron core, just produce magnetic field, form an independent magnetic circuit closed-system.The magnetic circuit system of this version, magnetic flux leakage is few, and utilize reluctance principle to make magnetic field directly produce magnetic pull, magnetic energy utilization rate is high, and thus the efficiency of motor is very high.
In described " unit independent magnetic circuit closed shape ", its unit stator can become a unit plastic packaging stator after plastic packaging; This unit plastic packaging stator can form multistage plastic sealed outer rotor switched reluctance motor after series connection.By unit stator, rotor core difference plastic packaging simultaneously, multistage plastic sealed outer rotor switched reluctance motor can also be formed through series connection; Also plastic packaging is carried out again after unit stator first can being connected, become a multistage outer rotor switched reluctance motor plastic packaging stator overall, (rotor core carries out plastic packaging after also can first connecting again, and it is overall to become multistage outer rotor switched reluctance motor plastic package rotor), thus form plastic sealed multistage outer rotor switched reluctance motor.
This stator and rotor core structure form, when magnetizing coil is energized, all pole shoes on stator and rotor iron core have magnetic field force to act on simultaneously, and institute is magnetic field force inducedly evenly arranged on the week of garden on all pole shoes of stator and rotor iron core, so iron core stress deformation amount little, vibrate little, noise is little, moment is large; Due to be plural serial stage combination (only have the coil no power of one-level, other coil is all in energising work.As Pyatyi switched reluctance machines, the coil of level Four is had to be energized at the same time work all the time), the motor made runs more steady, and moment is larger, more powerful.Because this electric machine structure is simple and easy, power density large, make motor volume little, lightweight, safer, more reliable, failure rate is low, production efficiency is high simultaneously, and save material, cost is low.
Due to the employing of this invention multistage outer rotor switched reluctance motor is combined and spliced mode, makes production convenient, easy.The series of advantages such as its excellent low noise properties, high even running, the high-power output of high-torque, high efficiency (also higher than brushless direct-current), controlled smooth stepless speed-regulating in addition.So be the product of alternative existing external rotor electric machine, being renewal product, is also the direction of significant period of time inner and outer rotors motor development and one of the target of enforcement from now on.As alternative external rotor alternate current motor, outer rotor DC motor, outer-rotor permanent magnet motor, external rotor synchronous machine, external rotor control motor, external rotor traction electric machine, external rotor variable frequency motor, external rotor servomotor etc.
Accompanying drawing explanation
Fig. 1 " unit independent magnetic circuit closed shape " stator core construction legend;
Fig. 2 " unit independent magnetic circuit closed shape " rotor core structure legend;
Fig. 3 " unit independent magnetic circuit closed shape " stator, rotor core assembling legend;
Fig. 4 unit stator (stator core and magnetizing coil) structure legend;
Fig. 5 thtee-stage shiplock outer rotor switched reluctance motor stator structure legend;
Fig. 6 thtee-stage shiplock outer rotor switched reluctance motor rotor structure legend;
Fig. 7 thtee-stage shiplock outer rotor switched reluctance motor stator and rotor package assembly legend;
Fig. 8 thtee-stage shiplock outer rotor switched reluctance motor general assembly structure legend;
Fig. 9 unit plastic packaging stator legend;
Figure 10 plastic sealed thtee-stage shiplock outer rotor switched reluctance motor stator and rotor assembling legend;
The plastic sealed stator legend of Figure 11 thtee-stage shiplock outer rotor switched reluctance motor;
Figure 12 thtee-stage shiplock switched reluctance machines operation logic illustrates legend;
Figure 13 thtee-stage shiplock outer rotor switched reluctance motor electrical schematic diagram;
Embodiment
As described in Fig. 1-Figure 13, a kind of plural serial stage outer rotor switched reluctance motor, comprises stator core (1), magnetizing coil (2), rotor core (3), casing (4), end cap (5), bearing (6), rotating shaft (7) etc.Rotor core (3) is fixed in casing (4), magnetizing coil (2) is placed in the groove (11) of stator core (1), rotating shaft (7) peace is solid in the centre bore (14) of stator core (1), the endoporus (13) of rotor core (3) is enclosed within the outer garden of stator core (1), forms outer-rotor structure form; Single stator core (1), rotor core (3) and coil (2) just constitute one " unit independent magnetic circuit closed shape " (Fig. 3), and its magnetic circuit is similar to helix tube magnetic circuit system or is similar to transformer magnetic circuit system.
After multiple " unit independent magnetic circuit closed shape " (Fig. 3) organically being connected, just constitute multistage outer rotor switched reluctance motor.
Series connection is connected by axially carrying out superposition " unit independent magnetic circuit closed shape " (Fig. 3), the unit stator (Fig. 4) of adjacent two " unit independent magnetic circuit closed shape " (Fig. 3) or rotor core (Fig. 2) will stagger certain angle (be benchmark according to pole shoe) each other, and angle turns to wants consistent.Associated by stator core coupling (8), rotor core coupling (9).Such as three grade of 9 pole shoe stator and rotor iron core series connection (Fig. 5, Fig. 6) is example, and two adjacent stator cores and rotor core make to be linked togather by correlator (8) (9), and stagger 10 degree each other.The magnetizing coil (2) of " unit independent magnetic circuit closed shape " (Fig. 3) at different levels is switching electric current according to the order of sequence, Programmed control open and close power supply apparatus (K1, K2, K3) and time.
About plastic sealed multistage outer rotor switched reluctance motor, by the related organization (15) on plastic-sealed body (12), the plastic packaging stator (Fig. 9) of " unit independent magnetic circuit closed shape " is associated, thus become plastic sealed multistage outer rotor switched reluctance motor.
Fig. 5, Fig. 6, Fig. 7, Fig. 8, Figure 10, Figure 11 are thtee-stage shiplock outer rotor switched reluctance motor and parts legend.
For the stator and rotor iron core of 9 pole shoes, thtee-stage shiplock outer rotor switched reluctance motor operation logic is described below:
(Fig. 3) is by axially-aligned and combine for every one-level " unit independent magnetic circuit closed shape " in thtee-stage shiplock outer rotor switched reluctance motor, two adjacent unit stators (Fig. 4) and pole shoe (1.1) (3.1) of rotor core (Fig. 2) stagger 10 degree each other, angle turns to wants consistent, as stator pole shoes (1-1) and pole shoe (1-2) stagger 10 degree, pole shoe (1-2) and pole shoe (1-3) stagger 10 degree; Rotating pole-piece (3-1) and pole shoe (3-2) stagger 10 degree, and pole shoe (3-2) and pole shoe (3-3) stagger 10 degree.Relative position relation between its " unit independent magnetic circuit closed shape " (Fig. 3) thtee-stage shiplock is as Figure 12 (a), Figure 12 (b), Figure 12 (c), when rotor forwards the location status of Figure 12 to, the magnetizing coil L2 power-off (and until just switching on power again when forwarding the location status of a again to) of b level, the magnetizing coil L1 of a level opens power supply (and until when forwarding the location status of b to just deenergization), and the magnetizing coil L3 of c level still continues in energising (and when only forwarding the location status of b to just deenergization); Just open power supply when namely every one-level " unit independent magnetic circuit closed shape " (Fig. 3) only forwards in Figure 12 (a) location status to, (b) location status forwarded in Figure 12 time deenergization, to be still energized or in power-off in other location status.Pole shoe on the rotor core of such motor will get into smooth continuously by the effect of magnetic pull.Power-up sequence is: logical---L1 the is open-minded---L2 of L3 turns off; L3 turns off---L1 leads to---, and L2 is open-minded; L3 is open-minded---L1 shutoff---, and L2 leads to; So move in circles, magnetizing coil in these three grades " unit independent magnetic circuit closed shape " (Fig. 3) is opened in order in turn, power cutoff, epitrochanterian pole shoe (3.1) will be subject to the effect of stator pole shoes (1.1) magnetic pull all the time and rotate, and can drive loaded work piece.
And for example 2 grades, 4 grades, the multistage outer rotor switched reluctance motor operation logics such as 5 grades are consistent.Be no matter what switched reluctance machines, during machine operation, only have the magnetizing coil no power of one-level not work all the time, the magnetizing coil in other grade is all in energising operating state.
Below be only the course of work and principle that multistage outer rotor switched reluctance motor is described, also will consider a lot of other factors when embody rule designs.
The multistage outer rotor switched reluctance motor of this invention is modularized production, modular assembled, and power output, moment, rotating speed can be selected easily.Produce, easily manufactured simple and easy, make range of application more extensive.
Claims (4)
1. multistage (secondary and more than) outer rotor switched reluctance motor, comprises stator core (1), magnetizing coil (2), rotor core (3), casing (4), end cap (5), bearing (6), rotating shaft (7), stator core connector (8), rotor core connector (9) etc.The endoporus (13) of rotor core (3) is enclosed within the outside of stator core (1), forms external rotor form; The centre bore (14) of stator core (1) is provided with rotating shaft (7), axle is equiped with bearing (6), rotor core (3) fixed placement is in casing (4), and magnetizing coil (2) is placed in the groove (11) in stator core (1).
The stator body of the multistage outer rotor switched reluctance motor of the present invention is made up of through series connection the multiple unit stators (Fig. 4) in " unit independent magnetic circuit closed shape " (Fig. 3); Rotor block is also made up of through series connection the multiple rotor cores (3) in " unit independent magnetic circuit closed shape " (Fig. 3).The stator and rotor iron core number of its series connection is determined according to need.Such as Fig. 5, Fig. 6, Fig. 7, Fig. 8, Figure 10, Figure 11 be three " unit independent magnetic circuit closed shape " (Fig. 3) unit stator, rotor core series connection and form three grades of outer rotor switched reluctance motors and parts.
2. outer rotor switched reluctance motor according to claim 1, it is characterized in that: in described " unit independent magnetic circuit closed shape " (Fig. 3), stator core (1) is formed (also can use other magnetic material) by silicon steel plate stacking.Which is provided with magnetizing coil (2) and be placed in the groove (11) of stator core middle part, pole shoe (1.1) on stator core (1) is staggered at the both sides (note: the pole shoe (1.1) on groove (11) both sides can stagger mutually arbitrarily angled of groove (11), but 1/2nd pole shoes that stagger are apart from being the best, so straight line, alignment are a kind of special cases, when the angle namely staggered mutually is zero); Described rotor core (3) is provided with rotating pole-piece (3.1) equally, and it is corresponding one by one with stator pole shoes (1.1), rotor core middle part offers groove (10) equally, corresponding with stator core slot (11).
3. the outer rotor switched reluctance motor according to claim 1,2, is characterized in that: motor volume is changeable, designs on demand, and large starting moment or high-torque can be realized, at a high speed, high efficiency, smooth stepless speed-regulating run.Can to run or can output-constant operation or can permanent rotating speed run by constant moment of force.
4. the multistage outer rotor switched reluctance motor according to claim 1,2, its unit stator (Fig. 4) becomes a unit plastic packaging stator (Fig. 9) through plastic packaging (12); Through multistage plastic sealed outer rotor switched reluctance motor in series (Figure 10 is three grades of plastic sealed outer rotor switched reluctance motor stator and rotor combination assembling legends).By unit stator (Fig. 4), rotor core (3) difference plastic packaging simultaneously, multistage plastic sealed switched reluctance machines can also be formed after series connection.Also unit stator (Fig. 4) first can be carried out connecting and carry out plastic packaging again, become the plastic packaging stator of multistage plastic sealed outer rotor switched reluctance motor.(rotor core (3) carries out plastic packaging after equally also can first connecting again), thus form plastic sealed multiple-pole switch reluctance motor.
Stator plastic packaging or stator and rotor simultaneously plastic packaging are a kind of special cases of the present invention.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410545514.5A CN104362821A (en) | 2014-09-29 | 2014-09-29 | Multistage outer-rotor switched reluctance motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410545514.5A CN104362821A (en) | 2014-09-29 | 2014-09-29 | Multistage outer-rotor switched reluctance motor |
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| CN104362821A true CN104362821A (en) | 2015-02-18 |
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| CN201410545514.5A Pending CN104362821A (en) | 2014-09-29 | 2014-09-29 | Multistage outer-rotor switched reluctance motor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106208573A (en) * | 2015-03-24 | 2016-12-07 | 财团法人工业技术研究院 | Axial air gap switched reluctance motor structure |
| CN107104564A (en) * | 2017-06-01 | 2017-08-29 | 深圳国安精密机电有限公司 | The transverse flux switched reluctance motor of multimode |
| CN107241000A (en) * | 2016-05-19 | 2017-10-10 | 深圳华引动力科技有限公司 | A kind of circumferential axial backmixing cloth phase switch reluctance motor |
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| US5936325A (en) * | 1996-12-31 | 1999-08-10 | Valeo Electronique | Synchronous type electrical machine |
| CN2847656Y (en) * | 2005-11-16 | 2006-12-13 | 李斌 | Series multipolar switch magnetoresistance motor |
| CN102497037A (en) * | 2011-11-26 | 2012-06-13 | 东风汽车有限公司 | Switch reluctance motor of stator and rotor sectional type grouping tandem |
| CN102904400A (en) * | 2011-07-29 | 2013-01-30 | 三星电机株式会社 | Traversal switched reluctance motor |
| CN102957290A (en) * | 2011-08-23 | 2013-03-06 | 合肥神话机电有限公司 | Two-phase multipolar switch reluctance motor |
| CN102983694A (en) * | 2012-12-27 | 2013-03-20 | 上海交通大学 | Sectional type switch reluctance motor |
| CN103166338A (en) * | 2013-03-19 | 2013-06-19 | 杭州杰能动力有限公司 | Switch reluctance (SR) external rotor motor and manufacturing method thereof |
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2014
- 2014-09-29 CN CN201410545514.5A patent/CN104362821A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5936325A (en) * | 1996-12-31 | 1999-08-10 | Valeo Electronique | Synchronous type electrical machine |
| CN2847656Y (en) * | 2005-11-16 | 2006-12-13 | 李斌 | Series multipolar switch magnetoresistance motor |
| CN102904400A (en) * | 2011-07-29 | 2013-01-30 | 三星电机株式会社 | Traversal switched reluctance motor |
| CN102957290A (en) * | 2011-08-23 | 2013-03-06 | 合肥神话机电有限公司 | Two-phase multipolar switch reluctance motor |
| CN102497037A (en) * | 2011-11-26 | 2012-06-13 | 东风汽车有限公司 | Switch reluctance motor of stator and rotor sectional type grouping tandem |
| CN102983694A (en) * | 2012-12-27 | 2013-03-20 | 上海交通大学 | Sectional type switch reluctance motor |
| CN103166338A (en) * | 2013-03-19 | 2013-06-19 | 杭州杰能动力有限公司 | Switch reluctance (SR) external rotor motor and manufacturing method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106208573A (en) * | 2015-03-24 | 2016-12-07 | 财团法人工业技术研究院 | Axial air gap switched reluctance motor structure |
| CN107241000A (en) * | 2016-05-19 | 2017-10-10 | 深圳华引动力科技有限公司 | A kind of circumferential axial backmixing cloth phase switch reluctance motor |
| CN107104564A (en) * | 2017-06-01 | 2017-08-29 | 深圳国安精密机电有限公司 | The transverse flux switched reluctance motor of multimode |
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Application publication date: 20150218 |
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