CN102035320B - Direct drive type sinusoidal magnetic field composite permanent magnet motor - Google Patents
Direct drive type sinusoidal magnetic field composite permanent magnet motor Download PDFInfo
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- CN102035320B CN102035320B CN 201010608927 CN201010608927A CN102035320B CN 102035320 B CN102035320 B CN 102035320B CN 201010608927 CN201010608927 CN 201010608927 CN 201010608927 A CN201010608927 A CN 201010608927A CN 102035320 B CN102035320 B CN 102035320B
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- 239000002131 composite material Substances 0.000 title claims abstract description 18
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 46
- 229910052742 iron Inorganic materials 0.000 claims description 16
- 238000004804 winding Methods 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 10
- 229910001220 stainless steel Inorganic materials 0.000 claims description 9
- 239000010935 stainless steel Substances 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 8
- 230000005415 magnetization Effects 0.000 claims description 7
- 230000005389 magnetism Effects 0.000 claims description 6
- 239000011521 glass Substances 0.000 claims description 3
- 230000001808 coupling effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 230000009347 mechanical transmission Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
The invention relates to a direct drive type sinusoidal magnetic field composite permanent magnet motor which comprises a self-control type permanent magnet motor and a magnetic field modulating type magnetic gear, wherein both the permanent magnet motor and the magnetic gear adopt a sinusoidal magnetizing permanent magnet structure and are concentrically integrated into a double-stator double-rotor structure, i.e. an outer rotor and an outer stator constituting the magnetic gear and an inner rotor and an inner stator constituting the permanent magnet motor are integrated into a concentric type structure by adopting a sleeve type structure. The invention has the advantages of compact structure, high torque density, high efficiency, high power factor, inherent overloading protection characteristic, and the like.
Description
Technical field
The invention belongs to motor and drive technology field, be specifically related to a kind of slow-speed of revolution, high-torque direct driving formula sinusoidal magnetic field composite type permanent magnet motor of being applicable to, this motor is the integrated of sinusoidal magnetic field concentric type magnetic gear and sinusoidal magnetic field autocontrol magneto, consists of high torque density, high efficiency, High Power Factor magneto.
Background technology
Traditional motor driven systems is the combination of motor and mechanical variable speed device.But the regular maintenance of mechanical transmission component (such as speed-changing gear box) and the replacing of vulnerable part need to be paid extra cost, and will be unusually expensive for the cost of its regular maintenance of long-distance running system; Gap between the mechanical transmission component and loss make high accuracy control be difficult to realize, the reliability of system and Efficiency Decreasing, and produce noise; Mechanical variable speed device also occupies larger installing space.
Summary of the invention
The objective of the invention is to solve in the radial magnetizing permanent magnetism compound machine magnetic gear harmonic field and affect the steadily efficient operation problem of built-in permanent magnetic motor, a kind of direct drive type sinusoidal magnetic field composite permanent magnet motor is provided, compact conformation, torque density are high, are suitable for the slow-speed of revolution, high-torque direct connects the driving occasion.
To achieve these goals, design of the present invention is: (Halbach) magnet structure that sine is magnetized is applied in magnetic field modulation magnetic gear and the autocontrol magneto, consists of one and is suitable for the directly composite efficient high torque density magneto of driving.Magnetic field modulation magnetic gear is the concentric type structure, and the magnetic annulus of two concentric sinusoidal magnetic fields consists of inner and outer rotors, external rotor number of pole-pairs P
1More than internal rotor number of pole-pairs P
2There is the stator adjustable magnetic of a fluting unshakable in one's determination between the two magnetic annulus, according to becoming the magnetic resistance modulation principle, as the number N of teeth s=P of adjustable magnetic iron core
1 
P
2The time, in two corresponding air gaps of rotor, can form the magnetic field consistent with number of pole-pairs separately, thereby produce constant electromagnetic torque.Because all permanent magnets have all participated in the transmission of power at any one time, so its torque density is much larger than only depending on single traditional magnetic gear to the magnetic pole power transmission.Put into an armature internal stator in the inner space of concentric type magnetic gear.Inside and outside two-layer permanent magnet is arranged on the internal rotor, and outer magnetic field of permanent magnet is outwards assembled, and consists of the concentric type magnetic gear with reluctance type stator, external rotor; The internal layer magnetic field of permanent magnet is poly-magnetic inwardly, consists of the built-in permanent magnetic motor with internal stator.Magnetic gear and Magnetic Field for Permanent Magnet Electrical Machines do not interfere with each other, form inner sinusoidal magnetic field separate, guarantee the separately composite type permanent magnet motor of superperformance.It is characterized in that the integrated of high-performance concentric type magnetic gear and autocontrol magneto, double-stator and double-rotor structure, i.e. multisegmented rotor and few utmost point rotor structure, reluctance type stator and armature stator structure.
According to the foregoing invention design, the present invention adopts following technical proposals:
A kind of direct drive type sinusoidal magnetic field composite permanent magnet motor comprises an autocontrol magneto and a magnetic field modulation magnetic gear, it is characterized in that described magneto and magnetic gear all adopt sinusoidal magnetizing permanent magnetism structure; And both assemble the double-stator and double-rotor structure with one heart, namely by consisting of magnetic gear external rotor and external stator and consisting of the internal rotor of magneto and internal stator adopts the telescoping structure set to consist of the concentric type structure.
Described external rotor is cup rotor, is fixedly connected with an external rotor central rotating shaft at the bottom of its glass type; Described external stator is cylindrical body, consisted of by piece unshakable in one's determination and the circumferential alternate intervals of non-magnet material, the one end directly is fixedly connected with an end cap of a support by an axially mounting body, and the other end is fixedly connected with the inner of described internal stator by a radial transmission line; Described internal rotor is cylindrical body, be made of every magnetic cylinder, an interior iron yoke and an internal layer permanent magnet suit an outer permanent magnet, an outer iron yoke, a stainless steel successively from outside to inside, described stainless steel is supported on the inside and outside two ends of described internal stator by two bearings every the two ends of magnetic cylinder; The outer end of described internal stator is fixedly connected with the end cap of support, settles described external rotor central rotating shaft in the centre bore of internal stator; One end of this external rotor central rotating shaft is supported on the outer end of described internal stator by bearing, and the other end is supported on by bearing in the endoporus of another end cap of described support.
Described external rotor cup type body inner periphery is to uniform P
1To permanent magnet, the cylindrical of the outer iron yoke of described internal rotor and the inner circle of interior iron yoke be circumferential uniform P respectively
2To outer permanent magnet and internal layer permanent magnet, and P
1P
2Described inside and outside iron yoke is separately fixed at described stainless steel on the inside and outside wall of magnetic cylinder.The inside and outside two-layer permanent magnet of the permanent magnet of described external rotor and internal rotor is the sine structure that magnetizes, and the magnetic field of permanent magnet of external rotor is inwardly assembled, and is " internally-oriented "; The outer magnetic field of permanent magnet of internal rotor is outwards assembled, and is " export-oriented ", and internal rotor internal layer magnetic field of permanent magnet is inwardly assembled, and is " internally-oriented "; Described external stator is the reluctance type stator, and Ns the circumferentially uniform iron core teeth utmost point arranged on it, and namely the circumferential uniform fluting of cup shaped iron core is filled non-magnet material in the groove, should satisfy Ns=P
1+ P
2Or Ns=P
1-P
2Described internal stator is made of coiling armature winding on the inner-stator iron core.
Described all permanent magnets are the surface-mount type sine structure that magnetizes, if every utmost point uses n piece magnet, the magnetization of every magnet is M, number of poles is p, and the magnetizing direction of first magnet is along x axle positive direction, and then magnetization x, the y representation in components of the i piece magnet of the sinusoidal structure that magnetizes are as follows:
The respectively corresponding inside or outside magnetism-collected structure of sign in the formula.
The iron core of described external stator is evenly slotted, and fills non-magnet material in the groove.
The armature winding of described internal stator adopts the fractional slot winding structure.
The present invention compared with the prior art, have following apparent outstanding substantive distinguishing features and remarkable advantage: magneto of the present invention and magnetic gear all adopt sinusoidal magnetizing permanent magnetism structure, and both assemble the double-stator and double-rotor structure with one heart.The present invention has compact conformation, torque density is high, efficient is high, power factor is high, and the intrinsic advantages such as overload protection characteristics.
Description of drawings
Fig. 1 is the structural representation of one embodiment of the invention;
Fig. 2 is A among Fig. 1-A place profile;
Fig. 3 is the two-layer permanent magnet sine of the internal rotor direction of magnetization schematic diagram that magnetizes among Fig. 1.
Embodiment
Details are as follows by reference to the accompanying drawings for the preferred embodiments of the present invention:
Embodiment one: referring to Fig. 1, this direct drive type sinusoidal magnetic field composite permanent magnet motor comprises an autocontrol magneto and a magnetic field modulation magnetic gear, it is characterized in that described magneto and magnetic gear all adopt sinusoidal magnetizing permanent magnetism structure; And both assemble the double-stator and double-rotor structure with one heart, namely adopt the telescoping structure set to consist of the concentric type structure by consisting of magnetic gear external rotor 4 and external stator 7 with the internal rotor 5 that consists of magneto and internal stator 15.
Embodiment two: referring to Fig. 1, Fig. 2, Fig. 3, the present embodiment and embodiment one are basic identical, and special feature is as follows: described external rotor 4 is cup rotor, is fixedly connected with an external rotor central rotating shaft 1 at the bottom of its glass type; Described external stator 7 is cylindrical body, consisted of by piece unshakable in one's determination and the circumferential alternate intervals of non-magnet material, the one end directly is fixedly connected with an end cap 2b of a support 3 by an axially mounting body 12, and the other end is fixedly connected with the inner of described internal stator 15 by a radial transmission line; Described internal rotor 5 is cylindrical body, be made of every magnetic cylinder, an interior iron yoke 10 and internal layer permanent magnet 11 suits an outer permanent magnet 8, an outer iron yoke 9, a stainless steel successively from outside to inside, described stainless steel is supported on the inside and outside two ends of described internal stator by two bearings every the two ends of magnetic cylinder; The outer end of described internal stator 15 is fixedly connected with the end cap 2b of support 3, settles described external rotor central rotating shaft 1 in the centre bore of internal stator 15; One end of this external rotor central rotating shaft 1 is supported on the outer end of described internal stator 15 by bearing, and the other end is supported on by bearing in the endoporus of another end cap 2a of described support 3.
4 glasss of type bodies of described external rotor inner periphery is to uniform P
1To permanent magnet, the cylindrical of the outer iron yoke 9 of described internal rotor 5 and the inner circle of interior iron yoke 10 be circumferential uniform P respectively
2To outer permanent magnet 8 and internal layer permanent magnet 11, and P
1P
2Described inside and outside iron yoke 10,9 is separately fixed at described stainless steel on the inside and outside wall of magnetic cylinder.The inside and outside two-layer permanent magnet 11,8 of the permanent magnet 6 of described external rotor 4 and internal rotor 5 is the sine structure that magnetizes, and inwardly assemble in permanent magnet 6 magnetic fields of external rotor 4, is " internally-oriented "; Outwards assemble in the outer permanent magnet of internal rotor 8 magnetic fields, is " export-oriented ", and inwardly assemble in internal rotor internal layer permanent magnet 11 magnetic fields, is " internally-oriented "; Described external stator 7 is the reluctance type stator, and Ns the circumferentially uniform iron core teeth utmost point arranged on it, and namely the circumferential uniform fluting of cup shaped iron core is filled non-magnet material in the groove, should satisfy Ns=P
1+ P
2Or Ns=P
1-P
2Described internal stator 15 is made of coiling armature winding 13 on the inner-stator iron core 14.
Described all permanent magnets 6,8,11 are the surface-mount type sine structure that magnetizes, if every utmost point uses n piece magnet, the magnetization of every magnet is M, number of poles is p, and the magnetizing direction of first magnet is along x axle positive direction, and then magnetization x, the y representation in components of the i piece magnet of the sinusoidal structure that magnetizes are as follows:
The respectively corresponding inside or outside magnetism-collected structure of sign in the formula.
The iron core of described external stator 7 is evenly slotted, and fills non-magnet material in the groove.
The armature winding 13 of described internal stator 15 adopts the fractional slot winding structure.
Embodiment three: the present embodiment and embodiment two are basic identical, its structure is as follows with operation principle: the main shaft 1 of sinusoidal magnetic field composite type permanent magnet motor links to each other with external rotor 4, the output low speed high torque, outer rotor permanent magnet 6, internal rotor 5 outer permanent magnets 8, internal layer permanent magnet 11 are sine (Halbach) structure that magnetizes, internal rotor number of pole-pairs P
2, external rotor number of pole-pairs P
1, and P
1P
2Therefore, external rotor 4 rotating speeds are low, internal rotor 5 rotating speeds are high.Be reluctance type external stator 7 between external rotor 4 and the internal rotor 5, on the reluctance type stator N arranged
sFill the non-magnet material enhance mechanical strength in the individual equally distributed iron core teeth utmost point, groove.The outer permanent magnet 8 of internal rotor 5 and outer iron yoke 9, external rotor 4, external stator 7 form a high performance magnetic gear.The septum interalveolare of external stator 7 distributes and makes air-gap permeance produce cyclic variation along circumference, thereby the permanent magnetism air-gap field on external stator 7 inside and outside both sides is played modulating action.Internal stator 14 is that slotted armature is unshakable in one's determination, embeds heterogeneous symmetrical armature winding 13 in the groove.The polyphase armature winding passes to symmetrical current, produces rotating magnetic field at interior air gap, and the magnetic field interaction of the permanent magnet 11 that magnetizes with internal rotor internal layer sine produces electromagnetic torque, realizes the energy transmission.The number of pole-pairs P of the outer permanent magnet 8 of internal rotor
2Number of pole-pairs P with outer rotor permanent magnet 6
1And the tooth number of poles N of external stator 7
sNeed to satisfy certain relation: N
s=P
1+ P
2(or N
s=P
1-P
2), thereby make two rotor space air-gap field modulation first-harmonics identical, realize the transmission of torque and rotational speed by the coupling effect of inner and outer rotors permanent magnetic field.The magnetic gear gearratio is G=P
1/ P
2
In the sinusoidal magnetic field composite type permanent magnet motor, internal rotor 5 is not only the part of magnetic gear, consists of the autocontrol magneto with internal stator 14 simultaneously.Inside and outside two-layer permanent magnet adopts " back-to-back " formula sine to magnetize in the internal rotor, and the main field of magnetic gear and autocontrol magneto is isolated mutually, has eliminated the adverse effect of magnetic gear harmonic field to the autocontrol magneto.
The sinusoidal magnetic field composite type permanent magnet motor can be made motor or generator operation.When being used as the motor operation, internal stator armature winding 13 according to the position signalling of internal rotor 5, adopts corresponding control technology to realize brushless DC motor operation or permanent magnet synchronous motor operation by inverter power supply.The magnetic Field Coupling effect of internal rotor 5 and external rotor 4 realizes the transmission of torque and rotational speed, and external rotor 4 is with the slow-speed of revolution, large torque output.When as generator operation, external rotor 4 utilizes the magnetic Field Coupling effect by prime mover driven, drives internal rotor 5 rotations, and the permanent magnetic field of internal rotor 5 sends alternating current at the armature winding 13 internal induction electromotive force of internal stator 14.
Claims (6)
1. a direct drive type sinusoidal magnetic field composite permanent magnet motor comprises an autocontrol magneto and a magnetic field modulation magnetic gear, it is characterized in that described magneto and magnetic gear all adopt sinusoidal magnetizing permanent magnetism structure; And both assemble the double-stator and double-rotor structure with one heart, namely adopt the telescoping structure set to consist of the concentric type structure by consisting of magnetic gear external rotor (4) and external stator (7) with the internal rotor (5) that consists of magneto and internal stator (15).
2. direct drive type sinusoidal magnetic field composite permanent magnet motor according to claim 1 is characterized in that described external rotor (4) is cup rotor, is fixedly connected with an external rotor central rotating shaft (1) at the bottom of its glass type; Described external stator (7) is cylindrical body, consisted of by piece unshakable in one's determination and the circumferential alternate intervals of non-magnet material, the one end directly is fixedly connected with an end cap (2b) of a support (3) by an axially mounting body (12), and the other end is fixedly connected with by radial transmission line the inner with described internal stator (15); Described internal rotor (5) is cylindrical body, be made of every magnetic cylinder, an interior iron yoke (10) and an internal layer permanent magnet (11) suit an outer permanent magnet (8), an outer iron yoke (9), a stainless steel successively from outside to inside, described stainless steel is supported on the inside and outside two ends of described internal stator by two bearings every the two ends of magnetic cylinder; The outer end of described internal stator (15) is fixedly connected with the end cap (2b) of support (3), settles described external rotor central rotating shaft (1) in the centre bore of internal stator (15); One end of this external rotor central rotating shaft (1) is supported on the outer end of described internal stator (15) by bearing, and the other end is supported on by bearing in the endoporus of another end cap (2a) of described support (3).
3. direct drive type sinusoidal magnetic field composite permanent magnet motor according to claim 2 is characterized in that described external rotor (4) cup type body inner periphery is to uniform P
1To permanent magnet, the cylindrical of the outer iron yoke (9) of described internal rotor (5) and the inner circle of interior iron yoke (10) be circumferential uniform P respectively
2To outer permanent magnet (8) and internal layer permanent magnet (11), and P
1P
2Described inside and outside iron yoke (10,9) is separately fixed at described stainless steel on the inside and outside wall of magnetic cylinder; The inside and outside two-layer permanent magnet (11,8) of the permanent magnet (6) of described external rotor (4) and internal rotor (5) is the sine structure that magnetizes, and inwardly assemble in permanent magnet (6) magnetic field of external rotor (4), is " internally-oriented "; Outwards assemble in the outer permanent magnet (8) of internal rotor magnetic field, is " export-oriented ", and inwardly assemble in internal rotor internal layer permanent magnet (11) magnetic field, is " internally-oriented "; Described external stator (7) is the reluctance type stator, and Ns the circumferentially uniform iron core teeth utmost point arranged on it, and namely the circumferential uniform fluting of cup shaped iron core is filled non-magnet material in the groove, should satisfy Ns=P
1+ P
2Or Ns=P
1-P
2Described internal stator (15) is made of the upper coiling armature winding (13) of an inner-stator iron core (14).
4. direct drive type sinusoidal magnetic field composite permanent magnet motor according to claim 3, it is characterized in that described all permanent magnets (6,8,11) are the surface-mount type sine structure that magnetizes, if every utmost point uses n piece magnet, the magnetization of every magnet is M, number of poles is p, and the magnetizing direction of first magnet is along x axle positive direction, and then magnetization x, the y representation in components of the i piece magnet of the sinusoidal structure that magnetizes are as follows:
The respectively corresponding inside or outside magnetism-collected structure of sign in the formula.
5. direct drive type sinusoidal magnetic field composite permanent magnet motor according to claim 3 is characterized in that the iron core of described external stator (7) is evenly slotted, and fills non-magnet material in the groove.
6. direct drive type sinusoidal magnetic field composite permanent magnet motor according to claim 3 is characterized in that the armature winding (13) of described internal stator (15) adopts the fractional slot winding structure.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010608927 CN102035320B (en) | 2010-12-28 | 2010-12-28 | Direct drive type sinusoidal magnetic field composite permanent magnet motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010608927 CN102035320B (en) | 2010-12-28 | 2010-12-28 | Direct drive type sinusoidal magnetic field composite permanent magnet motor |
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| Publication Number | Publication Date |
|---|---|
| CN102035320A CN102035320A (en) | 2011-04-27 |
| CN102035320B true CN102035320B (en) | 2013-03-06 |
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|---|---|---|---|
| CN 201010608927 Expired - Fee Related CN102035320B (en) | 2010-12-28 | 2010-12-28 | Direct drive type sinusoidal magnetic field composite permanent magnet motor |
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Cited By (1)
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|---|---|---|---|---|
| TWI513149B (en) * | 2014-04-10 | 2015-12-11 | Univ Nat Sun Yat Sen | Permanent magnet generator with magnetic gear |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0807388D0 (en) * | 2008-04-23 | 2008-05-28 | Magnomatics Ltd | Electrical machines |
| CN101330234A (en) * | 2008-04-21 | 2008-12-24 | 上海大学 | Direct-drive composite type permanent magnet motor |
| CN101662202A (en) * | 2009-09-25 | 2010-03-03 | 上海大学 | Magnetic field modulating type concentric magnetic gear transmission device in Halbach magnet structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI513149B (en) * | 2014-04-10 | 2015-12-11 | Univ Nat Sun Yat Sen | Permanent magnet generator with magnetic gear |
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