CN103633885A - Single winding hybrid outer rotor magnetic levitation switched reluctance motor for flywheel battery - Google Patents
Single winding hybrid outer rotor magnetic levitation switched reluctance motor for flywheel battery Download PDFInfo
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- CN103633885A CN103633885A CN201310652080.4A CN201310652080A CN103633885A CN 103633885 A CN103633885 A CN 103633885A CN 201310652080 A CN201310652080 A CN 201310652080A CN 103633885 A CN103633885 A CN 103633885A
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Abstract
The invention discloses a single winding hybrid outer rotor magnetic levitation switched reluctance motor for a flywheel battery. A hybrid outer rotor is disposed outside a stator. The hybrid outer rotor is encapsulated on the inner side of a flywheel in an overlying manner and integrally combined with a flywheel rotor. The hybrid outer rotor is of an integrated structure axially formed by a salient pole rotor and a disc rotor. No windings exist on the hybrid outer rotor. Toothed poles are evenly distributed on the salient pole rotor. No salient poles exist on the disc rotor side. The disc rotor is disposed on the gravity side close to the flywheel rotor. The axial length of the salient pole rotor is 1-4 times of that of the disc rotor. The single winding hybrid outer rotor magnetic levitation switched reluctance motor has the advantages that by the differential excitation of radial anti-pole winding, radial controllable levitation of the flywheel can be achieved, mechanical-electric energy conversion can be achieved, levitation support force, power generating efficiency and motor power density are increased effectively, and the winding and switch inverter circuit structure is simplified.
Description
Technical field
The present invention relates to magnetic suspension switched reluctance motor, especially a kind of simplex winding mixing external rotor magnetic suspension switched reluctance motor, for flying wheel battery.
Background technology
Flying wheel battery is a kind of electromechanical energy conversion device.It can convert the electric energy of the external world's input flywheel energy of High Rotation Speed to by motor, and stores; Can by generator, convert the flywheel energy of High Rotation Speed to electric energy, and flow to external loading; Can be when holding state, keep High Rotation Speed flywheel energy and not with extraneous positive energy exchange.Therefore, high speed motor for flywheel battery not only will have electronic/generating integrated characteristic, also will have efficient, high reliability, feature that no-load loss is little concurrently.
High speed motor for flywheel battery adopts the conventional motors such as magneto, switched reluctance machines, asynchronous machine conventionally, but because conventional motors can only be carried out power conversion, flying wheel battery must be equipped with in addition the independent individuals such as flywheel rotor, magnetic suspension bearing, causes that flying wheel battery volume is large, cost is high, energy consumption is large.In order to improve energy storage density and the energy storage efficiency of flying wheel battery, high speed motor for flywheel battery also can adopt the magnetic suspension motor that integrates power conversion and suspension bearing, as the number of patent application magnetic suspension switched reluctance motor that is CN201210139344.1 and the number of patent application split type magnetic suspension switched reluctance motor that is CN201210200147.6, these two kinds of magnetic suspension switched reluctance motors all adopt double winding inner rotor core, the defect of these two kinds of magnetic suspension switched reluctance motors is: during flying wheel battery stand-by operation, main winding and suspending windings must be worked simultaneously and could be produced required suspension bearing power, no-load loss is large, and the insulating material between main winding and suspending windings causes copper factor low, motor flux leakage is large, reliability is low, secondly, because motor and flywheel rotor are separated, flywheel rotor axial length increases, machine volume increase, again, suspending power is subject to the impact of rotor position angle large, and suspension bearing capacity and stability are difficult to guarantee.
Summary of the invention
The object of the invention is for overcoming the suspension bearing of existing flying wheel battery and the problem that integrated form drive motors exists, simplex winding mixing external rotor magnetic suspension switched reluctance motor for a kind of flying wheel battery is proposed, further improve suspension bearing capacity, generating efficiency and the power density of motor, improve the stability of a system and reliability.
The present invention is achieved through the following technical solutions: the present invention includes stator, external rotor and concentrated winding, on stator, there is the equally distributed tooth utmost point, each tooth only has a winding and independent control on extremely, stator is outward to mix external rotor, mixing external rotor laminates and is encapsulated in flywheel inner side and unites two into one with flywheel rotor, mix the integrative-structure that external rotor consists of vertically field spider and disc rotor, mix on external rotor without winding, on field spider, there is the equally distributed tooth utmost point, disc rotor side is without salient pole, disc rotor is placed on the center of gravity side near flywheel rotor, field spider axial length is 1～4 times of disc rotor axial length.
Beneficial effect of the present invention is:
1, compact conformation of the present invention, radially bearing capacity is large, power density is high, efficiency is high, is suitable as high speed motor for flywheel battery.
2, utilize the cross, straight axle magnetic conductance difference of field spider can produce electromagnetic torque, because magnetic conductance changes greatly with air gap, the radial suspension force producing after the differential excitation of stator winding is less, disc rotor is because air gap place magnetic conductance equates, can not produce electromagnetic torque, but because air gap is little, after the differential excitation of stator winding, can produce larger radial suspension force.
3, motor both can have been realized the radially controllable suspension of flywheel by the differential excitation of antipode winding radially, also can realize energy converting between mechanical.
4, motor adopts simplex winding excitation, has effectively improved the power density of suspension bearing power, generating efficiency and motor, has simplified winding and switching inverter circuit structure, has improved system reliability.
5, motor adopts mixed rotor, has improved radially bearing capacity and suspension stability, and the system loss while having reduced radially Inhaul operation, has improved radial suspension and generator operation performance.
6, motor adopts outer-rotor structure, has shortened flywheel rotor axial length, has dwindled machine system volume, has improved dynamic characteristics and the stability of fly wheel system.
7, motor adopts and concentrates winding, and winding overhang is short, and loss is little.
8, rotor is only magnetic conductive iron, firm in structure reliable, is suitable for high speed, ultrahigh speed operation, has improved the stored energy capacitance of flying wheel battery.
Accompanying drawing explanation
Fig. 1 is the structural representation of simplex winding mixing external rotor magnetic suspension switched reluctance motor for flying wheel battery of the present invention;
Fig. 2 is the tomograph that mixes external rotor in Fig. 1;
Fig. 3 is the magnetic line of force schematic diagram of salient pole rotor-side in Fig. 2;
Fig. 4 is the magnetic line of force schematic diagram of disc rotor side in Fig. 2.
In figure: 1. stator; 2. mix external rotor; 201. field spider; 202. disc rotor; 301. stator A1 utmost point windings; 302. stator A2 utmost point windings; 303. stator A3 utmost point windings; 304. stator A4 utmost point windings.
Embodiment
Referring to Fig. 1, the present invention includes: stator 1, mixing external rotor 2 and concentrated winding.Mix external rotor 2 and be enclosed within outside stator 1, stator 1 and mixing external rotor 2 are all coaxial with rotating shaft.Stator 1 and mix external rotor 2 and form by silicon steel plate stacking, the tooth of stator 1 is wound with concentrated winding on extremely, mixes on external rotor 2 without winding.
It is example that a three-phase 8/12 utmost point mixing external rotor magnetic suspension switched reluctance motor is only take in the present invention, and stator 1 and the number of poles that mixes external rotor 2 also can take 6/4,8/6,12/8.Three-phase 8/12 utmost point mixing external rotor magnetic suspension switched reluctance motor structural representation as shown in Figure 1.On stator 1, there are 12 equally distributed tooth utmost points, each stator tooth only has a winding on extremely, A phase winding is comprised of stator A1 utmost point winding 301, stator A2 utmost point winding 302, stator A3 utmost point winding 303, stator A4 utmost point winding 304 these four windings, and each winding is independently controlled.B phase is identical with A phase winding structure with C phase winding structure, can be rotated counterclockwise respectively 30 ° and 60 ° of acquisitions by A phase winding.
Mix the structure of external rotor 2 as shown in Figure 2.Mixing external rotor 2 is connected to form vertically by field spider 201 and disc rotor 202.Both can be a continuous integral body for field spider 201 and disc rotor 202, also can connect into an integral body at axial restraint.Disc rotor 202 is placed on the center of gravity side near flywheel rotor, and mixing external rotor 2 is positioned at the outside of stator 1 and laminates and is encapsulated in flywheel inner side, unites two into one with flywheel rotor.
Both axial overall lengths of field spider 201 and disc rotor 202 equal the axial length of stator 1.The inside and outside footpath of field spider 201 and disc rotor 202 is all identical.Air gap between field spider 201 and disc rotor 202 and stator 1 is 0.25mm left and right.On field spider 201, have 8 equally distributed tooth utmost points, disc rotor 202 sides do not have salient pole, are only a disc structure.Mix on external rotor 2 without winding.The axial length of field spider 201 is 1～4 times of left and right of the axial length of disc rotor 202, the ratio of concrete axial length can according to flying wheel battery radially, the performance requirement of axial carrying determines.
The present invention realizes suspension and the rotation of motor by the Differential Control of antipode radially, also can realize energy converting between mechanical.Take A phase winding as example, and the Differential Control of the electric current of Differential Control, antipode stator A2 utmost point winding 302 and the stator A4 utmost point winding 304 of the electric current by antipode A1 utmost point winding 301 and stator A3 utmost point winding 303, can produce four utmost point excitation fields.As shown in Figure 3, the motor gas-gap place magnetic line of force of field spider 201 sides is distorted the magnetic line of force of field spider 201 sides, produces torque T; On the other hand, the differential excitation of antipode winding makes the magnetic field intensity at the air gap place that A1 is corresponding from A3 winding different, thereby produces y radial suspension force Fy, and the size of this suspending power Fy is subject to the impact of rotor position angle, when the rotor utmost point departs from when larger, suspending power Fy is less.
As shown in Figure 4, because each air-gap permeance is identical, disc rotor 202 sides can not produce driving torque to the magnetic line of force of disc rotor 202 sides; On the other hand, the differential excitation of four utmost point windings makes the radially magnetic field intensity difference at antipode air gap place, thereby produce radial suspension force Fy, and this suspending power Fy and rotor position angle are irrelevant, therefore the radial suspension force producing is larger, can compensate the radial suspension force that field spider 201 sides produce, strengthen radially bearing capacity.
Claims (4)
1. a simplex winding mixing external rotor magnetic suspension switched reluctance motor for flying wheel battery, comprise stator, external rotor and concentrated winding, on stator, there is the equally distributed tooth utmost point, each tooth only has a winding and independent control on extremely, it is characterized in that: stator is outward to mix external rotor (2), mixing external rotor (2) laminates and is encapsulated in flywheel inner side and unites two into one with flywheel rotor, mix the integrative-structure that external rotor (2) consists of vertically field spider (201) and disc rotor (202), mix external rotor (2) upper without winding, on field spider (201), there is the equally distributed tooth utmost point, disc rotor (202) side is without salient pole, disc rotor (202) is placed on the center of gravity side near flywheel rotor, field spider (201) axial length is 1～4 times of disc rotor 202 axial lengths.
2. simplex winding mixing external rotor magnetic suspension switched reluctance motor for flying wheel battery according to claim 1, it is characterized in that: the current differential of the radially antipode winding on stator is controlled, produce excitation field, the radial suspension force that field spider (201) produces driving torque and affected by rotor position angle, disc rotor (202) produces the radial suspension force irrelevant with rotor position angle and does not produce driving torque, to compensate field spider (201) radial suspension force.
3. simplex winding mixing external rotor magnetic suspension switched reluctance motor for flying wheel battery according to claim 1, is characterized in that: the inside and outside footpath of field spider (201) and disc rotor (202) is all identical, and the air gap between stator is 0.25mm.
4. simplex winding mixing external rotor magnetic suspension switched reluctance motor for flying wheel battery according to claim 1, is characterized in that: the axial overall length of field spider (201) and disc rotor (202) equals the axial length of stator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310652080.4A CN103633885A (en) | 2013-12-09 | 2013-12-09 | Single winding hybrid outer rotor magnetic levitation switched reluctance motor for flywheel battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310652080.4A CN103633885A (en) | 2013-12-09 | 2013-12-09 | Single winding hybrid outer rotor magnetic levitation switched reluctance motor for flywheel battery |
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| CN103633885A true CN103633885A (en) | 2014-03-12 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016169363A1 (en) * | 2015-04-23 | 2016-10-27 | 清华大学 | Magnetic levitation momentum sphere |
| CN106953465A (en) * | 2017-04-28 | 2017-07-14 | 杭州东方文化园旅业集团有限公司 | Hub type reluctance switch generator |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10201195A (en) * | 1997-01-10 | 1998-07-31 | Nippon Electric Ind Co Ltd | Switched reluctance motor |
| CN101009450A (en) * | 2007-01-11 | 2007-08-01 | 中国矿业大学 | A three-phase external rotor switch magnetic resistance motor |
| CN101860114A (en) * | 2010-04-20 | 2010-10-13 | 天津大学 | Integrated switched reluctance machine flywheel energy storage device |
| CN102810963A (en) * | 2011-06-02 | 2012-12-05 | 三星电机株式会社 | Switched reluctance motor |
-
2013
- 2013-12-09 CN CN201310652080.4A patent/CN103633885A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10201195A (en) * | 1997-01-10 | 1998-07-31 | Nippon Electric Ind Co Ltd | Switched reluctance motor |
| CN101009450A (en) * | 2007-01-11 | 2007-08-01 | 中国矿业大学 | A three-phase external rotor switch magnetic resistance motor |
| CN101860114A (en) * | 2010-04-20 | 2010-10-13 | 天津大学 | Integrated switched reluctance machine flywheel energy storage device |
| CN102810963A (en) * | 2011-06-02 | 2012-12-05 | 三星电机株式会社 | Switched reluctance motor |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016169363A1 (en) * | 2015-04-23 | 2016-10-27 | 清华大学 | Magnetic levitation momentum sphere |
| US10532832B2 (en) | 2015-04-23 | 2020-01-14 | Tsinghua University | Magnetic levitation reaction sphere |
| CN106953465A (en) * | 2017-04-28 | 2017-07-14 | 杭州东方文化园旅业集团有限公司 | Hub type reluctance switch generator |
| CN106953465B (en) * | 2017-04-28 | 2024-05-14 | 杭州金潮酒业有限公司 | Hub type reluctance switch generator |
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Application publication date: 20140312 |