CN2870277Y - Permanent magnet generator rotor - Google Patents
Permanent magnet generator rotor Download PDFInfo
- Publication number
- CN2870277Y CN2870277Y CN 200620022759 CN200620022759U CN2870277Y CN 2870277 Y CN2870277 Y CN 2870277Y CN 200620022759 CN200620022759 CN 200620022759 CN 200620022759 U CN200620022759 U CN 200620022759U CN 2870277 Y CN2870277 Y CN 2870277Y
- Authority
- CN
- China
- Prior art keywords
- utmost point
- pawl
- rotating shaft
- permanent magnet
- pawl utmost
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 210000000078 claw Anatomy 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims abstract description 9
- 230000004907 flux Effects 0.000 claims description 14
- 229910001172 neodymium magnet Inorganic materials 0.000 claims description 4
- 230000006698 induction Effects 0.000 claims description 3
- 239000003607 modifier Substances 0.000 claims description 3
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 3
- 150000002910 rare earth metals Chemical class 0.000 claims description 3
- 238000000205 computational method Methods 0.000 claims description 2
- 238000004804 winding Methods 0.000 abstract description 19
- 230000005284 excitation Effects 0.000 abstract description 17
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 7
- 229910052799 carbon Inorganic materials 0.000 abstract description 7
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 238000003070 Statistical process control Methods 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 239000004020 conductor Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 230000005347 demagnetization Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Images
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- Synchronous Machinery (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The utility model relates to a generator rotor made of magneto materials; the first claw pole and the second claw pole are fixed at both ends of a rotating shaft; the teeth of the first and second claw poles are opposite to each other and fixed mal-positioning at 30 degrees in the shaft direction; the magneto is clamped between the first and second claw poles, the first fan suit is disposed at one end of the rotating shaft and studded on the back of the first claw pole while the second fan suit disposed at the other end of rotating shaft and studded on the back of the second claw pole. By adopting the utility model generator rotor, the structure is simple; moreover, the generator made of this rotor would not need carbon brush, slipping circle, excitation winding and outside energy for driving. The mechanical energy is converted into electromagnetic energy which could reach an efficiency of more than 85% with the power 20-30% higher than the conventional excitation generator.
Description
Technical field
The utility model relates to a kind of generator amature, particularly relates to a kind of generator amature by the permanent magnetic material structure.
Background technology
World car development history data shows: first generation automobile current generator is a DC generator, big because of volume, efficient is low, failure rate is high is replaced by second generation silicon rectification generator very soon, the relative first generation of second generation silicon rectification generator, though be a a progressive step, but still the drawback that inevitable volume is big, efficient is lower, fault is more, and reach very harsh stage to producing material, production technology, machining accuracy.Therefore, use silicon rectification generator since the sixties, world car motor expert just study more superior permanent magnet generator always, but finally stranded because solving many technical barriers such as voltage stabilizing demagnetization.So far the whole world has 700,000,000 automobiles still using silicon rectification generator approximately.
Below be that example illustrates that its operation principle is shown in accompanying drawing 1a and Fig. 1 b just with conventional excitation-type motor:
The primary structure of motor is made up of stator and rotor two parts, between stator 9, the rotor 8 air gap 7 is arranged.AX, BY, CZ three phase windings are arranged on the stator, and phase winding has the element of winding of multiturn series connection to be formed by connecting (seeing Fig. 1 b), and the equal turn numbers of every circle winding spatially differs 120 ° of electrical degrees each other.Excitation winding is housed on the rotor magnetic pole, direct current is provided and produces magnetic field by carbon brush → slip ring → excitation winding by external power source (storage battery on the automobile), its magnetic flux is come out by the rotor N utmost point, through air gap, stator core, air gap, enter the rotor S utmost point and constitute the loop, as shown in accompanying drawing 1a.
If with outside driven equipment drawing generator rotating shaft rotation, then the magnetic line of force of magnetic pole induces alternating electromotive force with the conductor (accompanying drawing 1-b) of cutting stator winding in stator conductors.The air gap flux density of magnetic pole and magnetic field distributes by sinusoidal rule along pole-face, and then the conductor electromotive force also changes by sinusoidal rule in time.If the three-phase winding terminal is connect to threephase load, just electric energy output is arranged, so motor is converted to electric energy to mechanical energy.
Must load onto slip ring on the excitation electromotor rotor, excessive by the sliding contact conduct of carbon brush, could realize the connection of rotor circuit and external power.So because the on-stream meeting of carbon brush is worn and torn gradually, the variation of spring pressure or install bad reliability that can influence contact has increased and has safeguarded and the workload of maintenance.Excitation electromotor all must be installed excitation winding, utilizes extrinsic current to produce magnetic field, and utilizes rotor to rotate cutting magnetic line.Because will rely on the conducting of slip ring, when carbon brush wore and tore, the magnetic field of generation did not even form magnetic field with instability, made motor lose electricity generate function.Excitation winding itself is inevitably wanted loss of energy simultaneously, thereby reduced efficiency of motor, when using on automobile, the electric current that needs storage battery to provide drives excitation winding and produces magnetic field, so just take the portion of energy of storage battery, and will shorten the life-span of storage battery.Under the environment of high temperature and strong motion, the demagnetization imagination appears in excitation winding easily.Because winding insulation makes moist, is heated, wears out and the repeated stock of mechanical stress and electromagnetic force, usually causes the damage of winding.In electrical fault, the excitation winding fault accounts for more than 60%.
Summary of the invention
One of purpose of invention provides a kind of rotor of permanent-magnetic power generator that utilizes the Nd-Fe-Bo permanent magnet material structure, is converted to the efficient of electromagnetic energy with the mechanical energy that improves motor;
Two of the purpose of invention provides a kind of rotor of permanent-magnetic power generator that utilizes Nd-Fe-Bo permanent magnet material structure, makes same volume, same weight, obtains bigger energy with the motor of rotating speed;
Three of the purpose of invention provides a kind of rotor of permanent-magnetic power generator of simplification, makes simpler, the longer service life of motor complete machine structure, and has reduced maintenance.
The purpose of this utility model is achieved in that
The rotor of permanent-magnetic power generator that the utility model provides comprises rotating shaft 4, the pawl utmost point and fan, it is characterized in that also comprising that a center has the permanent magnet 3 of through hole; The described first pawl utmost point 2 is fixed on described rotating shaft 4 one ends, the permanent magnet 3 that has through hole is inserted in rotating shaft 4, the second pawl utmost point 5 is fixed on the other end of described rotating shaft 4, wherein the first pawl utmost point 2 is relative with the tooth of the second pawl utmost point 5, and tooth and the tooth 30 ° of angles that misplace are vertically installed (that is: tooth and tooth stagger); Permanent magnet 3 is clamped between the first pawl utmost point 2 and the second pawl utmost point 5 (as shown in Figure 3), and first fan 1 is sleeved on rotating shaft 4 one ends, is embedded on the first pawl utmost point, 2 back sides again, and second fan 6 is sleeved on the other end of rotating shaft 4, is embedded on the second pawl utmost point, 5 back sides again.
In above-mentioned technical scheme, the 45# modifier treatment is used in described rotating shaft, shaft extension and axle journal place use the high-precision grinder grinding, guarantee concentricity, the cylindricity of shaft extension and axle journal, and by statistical Process Control be SPC control to make cooperating in shaft extension and axle journal and the bearing be interference fits, thereby guarantee the play (as shown in Figure 4) of bearing.
In above-mentioned technical scheme, described permanent magnet comprises disc and bar shaped, and wherein the size of permanent magnet is by volume calculated, and its computational methods are:
V
m＝(φ
D.F
D/BH)×10
6；
φ in the formula
D--the magnetic flux that permanent magnet itself provides; F
D--magnetomotive force;
B-magnetic flux density; The H-magnetic field intensity.
In above-mentioned technical scheme, described permanent magnet adopts the third generation rare-earth Nd-Fe-B material with " high remanent magnetism ", " high-coercive force ", " high energy product " three high characteristics, both: residual magnetic flux density Br=11660, magnetic induction coercivity H=11300, volume V
M=45.8cm
3, total magnetic flux φ
M=22668; (small size high magnetic energy).As shown in Figure 5.
In above-mentioned technical scheme, the described pawl utmost point is bowl-shape, and has the profile of tooth pawl utmost point in echelon at the periphery of bowl; Its median claw is very:
1, pole span τ=π .D
R/ 2P, D in the formula
R--rotor external diameter, P-motor number of pole-pairs;
2, the wide bc=(b of pawl
C1+ b
C2)/2, b in the formula
C1--radix unguis is wide, b
C2--the pawl point is wide;
3, the high degree of pawl (height of tooth) H
c=(D
R-D
f)/2, D in the formula
f--flange diameter;
4, the extremely interior skew angle β of pawl
c=tg
-1((h
c-h
C2)/L
c), h in the formula
C2--pawl point radial height,
L
c--pawl long (whole height).
Advantage of the present utility model is:
The utility model provides a kind of rotor of permanent-magnetic power generator of simplification, makes simpler, the longer service life of motor complete machine structure, and has reduced maintenance.Adopt Nd-Fe-Bo permanent magnet material to make p-m rotor, removed producing required exciting power and the carbon brush in rotor field from, the mechanical loss that rubs between the slip ring, thus the mechanical energy that has improved generator is converted to the efficient of electromagnetic energy.Average power has only 45% ~ 55% in the range of speeds of common excitation-type generator between 1500 ~ 1600r/min, and the permanent magnet generator that utilizes rotor of the present utility model to make, average power then can reach 65%-70% in the range of speeds between 1500-1600r/min.
Description of drawings
Fig. 1 a is conventional excitation generator inner structure and flux circuit fundamental diagram;
Fig. 1 b is conventional excitation generator element of winding schematic diagram
Fig. 2 is a rotor structure profile of the present utility model;
Fig. 3 a is the pawl utmost point vertical view in the rotor of the present utility model;
Fig. 3 b is Fig. 3 a pawl utmost point A-A profile;
Fig. 3 c is the end view of Fig. 3 a pawl utmost point;
Fig. 4 is the magnet structure profile in the rotor of the present utility model;
Drawing is described as follows:
The 1-first fan 2-first pawl utmost point 3-permanent magnet
The 4-rotating shaft 5-second pawl utmost point 6-second fan
7-air gap 8-rotor 9-stator
Embodiment
Embodiment 1: below in conjunction with drawings and Examples the utility model is described in detail
With reference to figure 2, the rotor that the generator of a 1000W of making is used with permanent magnet.
The 45# modifier treatment is used in the rotating shaft 4 of the rotor of present embodiment, shaft extension and axle journal place use the high-precision grinder grinding, guarantee concentricity, the cylindricity of shaft extension and axle journal, and by statistical Process Control be SPC control to make cooperating in shaft extension and axle journal and the bearing be interference fits, thereby guarantee the play of bearing.
With reference to figure 5, it is the Q235-A steel plate making of 1.2mm that first fan 1 of present embodiment and second fan 6 adopt thick, and the structure of this fan makes air flows more reasonable, reaches better radiating effect.
With reference to figure 4, the permanent magnet 3 of present embodiment adopts third generation rare-earth Nd-Fe-B material to become discoidal, and the center has through hole, and wherein the volume size of permanent magnet is: 45.8cm
3, its internal diameter is: 1.8cm, and overall diameter is: 7.2cm, thickness is: 1.2cm; This permanent magnet 3 has residual magnetic flux density: 11660Gs, and the magnetic induction coercive force is: 11300A/m, total magnetic flux is: 22668Gs; (small size high magnetic energy).
With reference to figure 3a, 3b, 3c, the first pawl utmost point 2 and the second pawl utmost point 5 of present embodiment are bowl-shape, and have 6 teeth at the periphery of bowl, and form the trapezoidal pawl utmost point;
The pole span τ of its median claw utmost point is: 2.393cm; The wide bc of pawl is: 1.675cm;
The wide b of radix unguis
C1For: 2.63cm; The wide b of pawl point
C2For: 0.72cm; The high degree of pawl H
cFor: 1.02cm;
The extremely interior skew angle β of pawl
cFor: 13.65 °; (conventional pawl utmost point leakage flux obviously reduces, for: 6525Gs);
Pawl point radial height h
C2For: 0.243cm; The long L of pawl
cFor: 3.2cm.
With reference to figure 2, the rotor of permanent-magnetic power generator of present embodiment use above-mentioned rotating shaft 4, the first pawl utmost point 2, the second pawl utmost point 5, first fan 1 and second fan 6, and a center has the discoidal permanent magnet 3 of through hole; The first pawl utmost point 2 is fixed on rotating shaft 4 one ends earlier, through hole with discoidal permanent magnet 3 is inserted in rotating shaft 4 again, then in the rotating shaft 4 of the another side of permanent magnet 3, the second pawl utmost point 5 is installed again, such first pawl utmost point 2 is relative with the tooth of the second pawl utmost point 5, and tooth and the tooth 30 ° of angles that misplace are vertically installed (that is: tooth and tooth stagger); Permanent magnet 3 is clamped in (shown in accompanying drawing 3a, 3b, 3c) between them by the trapezoidal pawl of the first pawl utmost point 2 and the second pawl utmost point 5, first fan 1 by Bearing Installation on an end of rotating shaft 4, be embedded in again on the first pawl utmost point, 2 back sides, second fan 6, is embedded on the second pawl utmost point, 5 back sides on the other end of rotating shaft 4 by Bearing Installation again.
Because the rotor of permanent-magnetic power generator of present embodiment has saved slip ring, carbon brush and excitation winding, so the pawl utmost point, stator, shell all reduced overall dimension accordingly, and the conventional excitation electromotor of general shape volume ratio has reduced 15-20%; After adopting the original excitation winding of NdFeB rear-earth material substitution, internal magnetic field intensity reaches 10000 Gausses, and the design generator power is 1000W.The dc rated voltage of exporting after rectification, voltage stabilizing is 14V, and rated current is 72A, and the gross weight that high workload rotating speed is the 10000r/min generator is 6kg.Because fan has been assembled in front and back, effectively self-ventilation makes the whole generator temperature rise lower 20-25%.The efficient that mechanical energy is converted to electromagnetic energy reaches more than 85%, and specific power (that is: the ratio of volume and power) is the 20-30% of conventional excitation generator.Be applicable in the automobile of 14V electrical system and use.
It should be noted last that: above embodiment is the unrestricted technical scheme of the present invention in order to explanation only, although the present invention is had been described in detail with reference to the foregoing description, those of ordinary skill in the art is to be understood that: parts of the present invention are equal to replacement, and not breaking away from any modification or partial replacement of the spirit and scope of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (5)
1. a rotor of permanent-magnetic power generator comprises rotating shaft (4), the pawl utmost point and fan, it is characterized in that: also comprise the permanent magnet (3) that has through hole in the middle of; The described first pawl utmost point (2) is fixed on described rotating shaft (4) one ends, the permanent magnet (3) that has through hole is inserted in rotating shaft (4), the second pawl utmost point (5) is fixed on the other end of described rotating shaft (4), wherein the first pawl utmost point (2) is relative with the tooth of the second pawl utmost point (5), and tooth and the tooth 30 ° of angles that misplace are vertically installed; It is middle with the second pawl utmost point (5) that permanent magnet (3) is clamped in the first pawl utmost point (2), first fan (1) is sleeved on rotating shaft (4) one ends, be embedded on the first pawl utmost point (2) back side, second fan (6) is sleeved on the other end of rotating shaft (4) again, is embedded on the second pawl utmost point (5) back side again.
2. by the described rotor of permanent-magnetic power generator of claim 1, it is characterized in that: the 45# modifier treatment is used in described rotating shaft (4).
3. by the described rotor of permanent-magnetic power generator of claim 1, it is characterized in that: described permanent magnet (3) comprises disc or bar shaped, and wherein the size of permanent magnet is by volume calculated, and its computational methods are:
V
m＝(Φ
D.F
D/BH)×10
6；
Φ in the formula
D--the magnetic flux that permanent magnet itself provides; F
D--magnetomotive force;
B-magnetic flux density; The H-magnetic field intensity.
4. by claim 1 or 3 described rotor of permanent-magnetic power generator, it is characterized in that: described permanent magnet (4) adopts rare-earth Nd-Fe-B material, residual magnetic flux density Br=11660Gs, magnetic induction coercivity H=11300A/m, total magnetic flux Φ
M=22668Gs.
5. by the described rotor of permanent-magnetic power generator of claim 1, it is characterized in that: the described first pawl utmost point (2) and the second pawl utmost point (5) are bowl-shape, and have the profile of tooth pawl utmost point in echelon at the periphery of bowl;
Pole span τ=π the .D of its median claw utmost point
R/ 2P, D in the formula
R--rotor external diameter, P-motor number of pole-pairs;
Wide bc=(the b of pawl
C1+ b
C2)/2, b in the formula
C1--radix unguis is wide, b
C2--the pawl point is wide;
The high degree of pawl H
c=(D
R-D
f)/2, D in the formula
f--flange diameter;
The extremely interior skew angle β of pawl
c=tg
-1((h
c-h
C2)/L
c), h in the formula
C2--pawl point radial height, the Lc--pawl is long.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620022759 CN2870277Y (en) | 2006-01-27 | 2006-01-27 | Permanent magnet generator rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620022759 CN2870277Y (en) | 2006-01-27 | 2006-01-27 | Permanent magnet generator rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2870277Y true CN2870277Y (en) | 2007-02-14 |
Family
ID=37725219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620022759 Expired - Fee Related CN2870277Y (en) | 2006-01-27 | 2006-01-27 | Permanent magnet generator rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2870277Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102832727A (en) * | 2011-06-17 | 2012-12-19 | 阿斯莫有限公司 | Rotor and electric motor |
| CN103095004A (en) * | 2011-10-31 | 2013-05-08 | 阿斯莫有限公司 | Rotor And Motor |
| CN103259354A (en) * | 2012-02-15 | 2013-08-21 | 阿斯莫有限公司 | Rotor and motor |
| US9490669B2 (en) | 2012-08-20 | 2016-11-08 | Asmo Co., Ltd. | Rotor and motor |
| US9490671B2 (en) | 2011-10-31 | 2016-11-08 | Asmo Co., Ltd. | Rotor and motor |
| CN107070172A (en) * | 2017-04-13 | 2017-08-18 | 王廷森 | Automobile and engineering machinery magnetic variation speed clutch |
| CN108292870A (en) * | 2015-12-01 | 2018-07-17 | 法雷奥电机设备公司 | Electric rotating machine claw rotor with enhancing magnetic property |
-
2006
- 2006-01-27 CN CN 200620022759 patent/CN2870277Y/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102832727A (en) * | 2011-06-17 | 2012-12-19 | 阿斯莫有限公司 | Rotor and electric motor |
| CN102832727B (en) * | 2011-06-17 | 2017-09-12 | 阿斯莫有限公司 | Rotor and motor |
| CN103095004B (en) * | 2011-10-31 | 2016-09-28 | 阿斯莫有限公司 | rotor and motor |
| US9490671B2 (en) | 2011-10-31 | 2016-11-08 | Asmo Co., Ltd. | Rotor and motor |
| CN103095004A (en) * | 2011-10-31 | 2013-05-08 | 阿斯莫有限公司 | Rotor And Motor |
| CN103259354A (en) * | 2012-02-15 | 2013-08-21 | 阿斯莫有限公司 | Rotor and motor |
| CN103259354B (en) * | 2012-02-15 | 2017-03-01 | 阿斯莫有限公司 | Rotor and motor |
| CN107040107A (en) * | 2012-02-15 | 2017-08-11 | 阿斯莫有限公司 | Rotor and motor |
| CN107040107B (en) * | 2012-02-15 | 2019-04-02 | 株式会社电装 | Rotor and motor |
| US9490669B2 (en) | 2012-08-20 | 2016-11-08 | Asmo Co., Ltd. | Rotor and motor |
| CN108292870A (en) * | 2015-12-01 | 2018-07-17 | 法雷奥电机设备公司 | Electric rotating machine claw rotor with enhancing magnetic property |
| CN108292870B (en) * | 2015-12-01 | 2020-03-03 | 法雷奥电机设备公司 | Rotary electric machine claw rotor with enhanced magnetic properties |
| CN107070172A (en) * | 2017-04-13 | 2017-08-18 | 王廷森 | Automobile and engineering machinery magnetic variation speed clutch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070214 |