CN2726201Y - Rare-earth permanent magnetic stabilized voltage sinle-phase synchronous generator - Google Patents
Rare-earth permanent magnetic stabilized voltage sinle-phase synchronous generator Download PDFInfo
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- CN2726201Y CN2726201Y CN 200420079590 CN200420079590U CN2726201Y CN 2726201 Y CN2726201 Y CN 2726201Y CN 200420079590 CN200420079590 CN 200420079590 CN 200420079590 U CN200420079590 U CN 200420079590U CN 2726201 Y CN2726201 Y CN 2726201Y
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Abstract
The utility model relates to a rare-earth, permanent-magnetic, self-stabilized voltage and single-phase synchronous generator, which is composed of a stator with an armature winding and a rotor with a rare-earth permanent magnet. The rotor adopts a salient pole type radical magnetizing structure, a passing slot of which the longitudinal sections are in an inverse V shape is upward and downward symmetrically arranged on a rotor iron core by using a quadrature axis as the center, and flat plate-shaped rotor magnetic steel is inlaid in the passing slots to comprise two magnetic poles of the rotor. The utility model is characterized in that residual magnetic steel is bilaterally and symmetrically inlaid on the rotor iron core by using a straight axis as the center, both ends of the inverse V-shaped passing slot are respectively provided with L-shaped residual trenches, edges of pole shoes of the top left corner and the bottom right corner of the rotor iron core or edges of pole shoes of the top right corner and the bottom left corner of the rotor iron core are respectively provided with pole shoe gaps, and thus, the right-left asymmetry of a magnetic path by taking the straight axis as the center is formed. The utility model uses the inner magnetism-regulating principle of the rotor for implementing voltage regulating functions. The utility model is characterized in that the simple structure, the effect is visible, and the long-term technical problem of the voltage regulation of a small-sized, rare-earth and permanent-magnetic synchronous generator is skillfully solved.
Description
Technical field
The utility model belongs to electrical generator fields, is specifically related to a kind of rare-earth permanent-magnet single-phase synchronous generator.This electric generator structure is simple, move highly reliable, low cost, non-maintaining, it can constitute small-sized portable power source with internal combustion engine or other dynamic power machines easily, is particularly suitable for family, constructions work, open-air electricity consumption, communication, military affairs, car and boat, enterprises and institutions etc. as stand-by power supply.
Background technology
The rare earth permanent magnet synchronous generator is a kind of synchronous alternating-current generator that adopts the rare-earth permanent magnet excitation.At present, this generator development has the trend that replaces electric excitation generator greatly rapidly, and is especially in short supply at current electric energy, and electricity consumption has bright prospects as civilian or small-sized autonomous power supply system exploitation limited period.
The armature winding of rare earth permanent magnet synchronous generator is everlasting on the stator, and rare-earth permanent magnet (neodymium iron boron) is placed in rotor with various version, and therefore this generator Structure characteristics mainly show on the rotor.Because the high energy product and the high-coercive force (particularly high HCJ) of rare-earth permanent magnet, the rare earth permanent magnet synchronous generator is brushless with other and have the synchronous generator of brush to compare, and has a series of outstanding advantages such as volume is little, in light weight, efficient is high, characteristic is good.But the most fatal shortcoming of this generator is the pressure regulation ability.Its reason is: because the high HCJ of rare-earth permanent magnet makes its magnetic field to regulate, so when load or rotation speed change, it is the comparison difficulty that this class generator keeps constant voltage.During such as the work of, generator, load from zero load to fully loaded process, the armature reaction that produces owing to load current has demagnetizing effect, the magnetic field that rare-earth permanent magnet produced is weakened, thereby output voltage is descended, and this a part of voltage drop can't compensate in permanent magnet generator.
In order to overcome above-mentioned inherent shortcoming, work such as Li Zhongming, LIU WEIGUO, by " rare-earth permanent-magnet electric machine " book that National Defense Industry Press publishes in July, 1999, chapter 5 the 3rd joint is that title has been introduced following five kinds of pressure regulation methods (the 285th～289 page) with " voltage-regulation of rare earth permanent magnet synchronous generator ":
1, series capacitance pressure regulation.This method is the output series capacitor at generator, relies on the purpose that is used for reaching voltage-regulation of the synchronous induction reactance Xs of capacitive reactance Xc compensated dynamo.
2, additional dc magnetization winding pressure regulation.This method is all to slot at the surfaces externally and internally of armature core, and a collar-shaped dc magnetization winding is installed.The size of the magnetic potential by changing the dc magnetization winding changes every utmost point magnetic flux, thereby reaches the purpose of pressure regulation.
3, utilize the converters pressure regulation.This method is come regulation voltage by the converters and the control system thereof of generator output end, and two kinds of schemes are wherein arranged, and a kind of is the AC-DC-AC scheme, and another kind is a friendship-friendship scheme.
4, birotor or two stator voltage controlling.This method is to utilize two rotors or two stator relative angular displacements, and stack by the voltage vector sum reaches the pressure regulation purpose then.
5, hybrid excitation pressure regulation.This method makes up rare earth permanent magnet magnetic field and an auxiliary electrical magnetic part magnetic field and realizes pressure regulation.
Above adjusting pressure measure, from form have internal pressure-regulating and outside the branch of pressure regulation, most complex structure cost height; And the effect aspect is except the converters pressure regulation, and other method is all undesirable.Only with regard to the converters pressure regulation, although waveform and voltage are all more satisfactory, if but with this technical sophistication, cost an arm and a leg, the voltage-regulating technique that does not have overload capacity again is applied on the small generator, it is infeasible only being used in the burning voltage practice.Therefore, with regard to present prior art, really solve small rare earth permanent magnet single phase synchronous generator pressure regulation problem, be the comparison difficulty.For a long time,, therefore restricting rare-earth permanent-magnet single-phase synchronous generator development and application always, becoming the technical barrier in this area although the extremely those skilled in the art's concern of this problem does not all have breakthrough from technical standpoint.
Summary of the invention
The utility model purpose provides a kind of interior adjustable magnetic function that has, and simple in structure, the obvious results rare earth permanent magnet is from the voltage stabilizing single phase synchronous generator.
For achieving the above object, the technical solution adopted in the utility model is: a kind of rare earth permanent magnet is from the voltage stabilizing single phase synchronous generator, constitute by the stator of charged pivot winding and the rotor of band rare-earth permanent magnet, rotor adopts salient pole type diametrical magnetization structure, be that the center is symmetrical arranged the groove of longitudinal section for " ∧ " shape up and down to hand over axle on the rotor core that is formed by stacking by silicon steel sheet, inlay the plate shaped rotor magnetic steel of making by rare earth permanent-magnetic material in this groove, constitute two magnetic poles of rotor, be that the center is symmetrical set magnet isolation tank with the d-axis on the rotor core, two magnet isolation tanks lay respectively at up and down the point midway between two " ∧ " shape groove corresponding end, inlay in the magnet isolation tank by rare earth permanent-magnetic material make every the magnetic magnet steel, consistent every the magnetic magnet steel with rotor magnetic steel magnetic line of force direction; " ∧ " shape groove two ends are provided with " L " shape magnetism isolating trench respectively, and " L " shape magnetism isolating trench extends to magnet isolation tank from " ∧ " shape groove end; At the upper left corner of rotor core and rotating pole-piece edge, the lower right corner or the upper right corner and rotating pole-piece edge, the lower left corner be respectively equipped with the pole shoe breach, constituting magnetic circuit with this is asymmetry about the center with the d-axis.
Related content and change interpretation in the technique scheme are as follows:
1, in the such scheme, described " d-axis " and " handing over axle " is the professional term in the motor configuration, refers to vertical central axis and transverse central axis in Fig. 1 rotor respectively.
2, in the such scheme, in order to strengthen magnetic resistance, ordering about every the magnetic flux of the magnetic magnet steel Lian Jiqiao of pouring into as much as possible, can on rotor core be that the center is symmetrical set row's magnetic hole with the d-axis every magnetic magnet steel inboard at two.
3, in the such scheme, have preferably every the magnetic effect, can hand over the projected length on the axle be designed to 2/3～3/3 of rotor magnetic steel thickness every the magnetic magnet steel in order to make every the magnetic magnet steel.
4, in the such scheme, in order to exhaust system short circuit flux amount, cannelure width 〉=rotor magnetic steel thickness that will " L " shape magnetism isolating trench during design is in the projection of handing on the axle, the projection of level trough length 〉=on the magnetic magnet steel is being handed over spool.
5, in the such scheme,, can be that the center is symmetrical arranged ventilation hole up and down to hand over axle with the rotor yoke of iron core during design in order to reduce the temperature of rotor.
The utility model operation principle is: every magnetic measure and asymmetry magnetic structure, utilize the interior adjustable magnetic principle of rotor to realize the automatic Regulation function by epitrochanterian.
Because the technique scheme utilization, the utility model compared with prior art has following advantage and effect:
1,, thereby significantly reduced the leakage field between the rotor magnetic steel because the utility model is provided with every the magnetic magnet steel, and the principle of utilizing the same sex to repel each other is blocked rotor magnetic steel along the magnetic line of force that Lian Jiqiao pours between " ∧ " of two symmetries of rotor shape magnetic pole.
2, because the utility model is provided with " L " shape magnetism isolating trench on rotor, therefore can well exhaust the short circuit flux amount between " ∧ " shape magnetic pole of making two symmetries, significantly reduced the leakage field between the rotor magnetic steel.
3,, thereby strengthened the ability of the anti-armature reaction of generator greatly because the unique effect of pole shoe breach makes the magnetic circuit formation dissymmetrical structure about the magnetic pole d-axis.
In sum, owing to adopted above technical measures at rotor, compared with prior art be characterized in simple in structure, effect is remarkable, utilizes the interior adjustable magnetic of rotor to solve the technical barrier of small rare earth permanent magnet synchronous generator pressure regulation for a long time dexterously.Adopt the measure of the utility model special technique after tested, the steady state voltage deviation of generator is in 5%, and the sinusoidal aberration rate of voltage waveform is stabilized in 3%.
Description of drawings
Accompanying drawing 1 is that the utility model rare earth permanent magnet is from voltage stabilizing single phase synchronous generator stator and rotor structure schematic diagram.
Accompanying drawing 2 is the A-A cutaway view of Fig. 1 rotor.
Accompanying drawing 3 is the enlarged drawing of Fig. 1 rotor.
In the above accompanying drawing: 1, stator tooth; 2, stator slot; 3, stator yoke; 4, rivet; 5, rotating pole-piece; 6, rotor magnetic steel; 7, rotating shaft; 8, every the magnetic magnet steel; 9, rotor yoke; 10, ventilation hole; 11, magnetism isolating trench; 12, Lian Jiqiao; 13, non magnetic end plate; 14, pole shoe breach; 15, row's magnetic hole; 16, tooth boots; 17, notch.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described:
Embodiment: a kind of rare earth permanent magnet is made of the stator of charged pivot winding and the rotor of band rare-earth permanent magnet from the voltage stabilizing single phase synchronous generator.
By shown in Figure 1, stator is made up of support, stator core and winding three parts, and stator core is fixed on the support, and winding is embedded in the stator slot 2.Stator core is formed by stacking by the multi-disc silicon steel sheet, and silicon steel sheet is a loop configuration, and it is stator slot 2 that its inner ring upper edge is circumferentially with between 1, two adjacent stators tooth 1 of stator tooth.Stator tooth 1 is provided with tooth boots 16, and stator slot 2 is provided with notch 17.The outer ring of silicon steel sheet is a stator yoke 3.
By Fig. 1～shown in Figure 3, rotor adopts salient pole type diametrical magnetization structure, and iron core fixedly forms by the stack of multi-disc silicon steel sheet and by rivet 4, and the iron core two ends are provided with non magnetic end plate 13, and the center is provided with rotating shaft 7.Be that the center is symmetrical arranged the groove of longitudinal section for " ∧ " shape up and down to hand over axle on the rotor core, inlay four plate shaped rotor magnetic steels 6 making by rare earth permanent-magnetic material in this groove, constitute two magnetic poles of rotor.
In order to increase magnetic resistance, exhaust system short circuit flux amount, adopted following technical measures:
1, be that the center is symmetrical set magnet isolation tank with the d-axis on the rotor core, two magnet isolation tanks lay respectively at up and down the point midway between two " ∧ " shape groove corresponding end, inlay in the magnet isolation tank by rare earth permanent-magnetic material make every magnetic magnet steel 8, every magnetic magnet steel 8 is side's bar shaped, it is consistent with rotor magnetic steel 6 magnetic line of force directions, sees shown in Figure 3.Handing over the projected length on the axle every magnetic magnet steel 8 is 2/3～3/3 of rotor magnetic steel thickness.This is a principle of utilizing the same sex to repel each other, and rotor magnetic steel 6 edges are connected the magnetic line of force blocking-up that utmost point bridge 12 pours in.
2, " ∧ " shape groove two ends are provided with " L " shape magnetism isolating trench 11 respectively, and " L " shape magnetism isolating trench 11 extends to magnet isolation tank from " ∧ " shape groove end.The projection of the cannelure width 〉=rotor magnetic steel thickness of " L " shape magnetism isolating trench on the friendship axle, level trough length 〉=every the projection (under the situation that do not influence rotor yoke and rotor strength as far as possible big) of magnetic magnet steel on the friendship axle.Connect utmost point bridge 12 under the situation that rotary centrifugal force allows, narrow as far as possible and grow, to exhaust the short circuit flux amount of making.
3, on rotor core be that the center is symmetrical set row's magnetic hole 15 at two every magnetic magnet steel 8 inboards with the d-axis.The effect in row's magnetic hole 15 is for strengthening magnetic resistance, ordering about every the magnetic flux of magnetic magnet steel 8 company of pouring into as much as possible utmost point bridge 12.
4, be respectively equipped with pole shoe breach 14 at the upper left corner and lower right corner rotating pole-piece 5 edges of rotor core, the unique effect of pole shoe breach 14 is the asymmetry of magnetic poles d-axis left and right sides magnetic circuit, to weaken the influence of quadrature axis armature reaction to d-axis magnetic field.If generator amature is rotated counterclockwise, according to the law of electromagnetic induction, at certain in a flash, as the position in Fig. 1, the right part of top magnetic pole strengthens because of handing over axle reaction main field, and the left part of top magnetic pole then weakens.Because the existence of upper left side breach, the magnetic field that makes enhancing is greater than the magnetic field of weakening.In the dynamic process of quadrature axis armature reaction, the magnetic potential decline degree of rotor magnetic steel is less than unnotched situation like this.The situation of following main pole is opposite with top because of polarity, and left part increases magnetic greater than the right part demagnetize, combines consistent with the top.
Owing to taked above-mentioned measure on rotor, the leakage field of magnet steel reduces, and the ability of anti-armature reaction strengthens, and makes the static speed governing rate of output voltage and dynamic debugging mode rate all reduce to minimum.
In addition, in order to reduce the temperature of rotor, can be that the center is symmetrical arranged ventilation hole 10 up and down to hand over axle with the rotor yoke of iron core during design, this is brushless and has the brush generator not accomplish, it has strengthened the axially distinguished and admirable of rotor, the temperature rise of maintenance rotor is lower than the temperature rise of stator forever, has guaranteed that stator winding has the overload capacity that is higher than electric exciter.
For obtaining Short Circuit withstand, non-maintaining, the long-life, in the magnet steel of rare-earth Nd-Fe-B generator was selected, its thickness requirement was at 5～6 times magnetic potential of air gap reduced value.
Claims (5)
1, a kind of rare earth permanent magnet is from the voltage stabilizing single phase synchronous generator, constitute by the stator of charged pivot winding and the rotor of band rare-earth permanent magnet, rotor adopts salient pole type diametrical magnetization structure, be that the center is symmetrical arranged the groove of longitudinal section for " ∧ " shape up and down to hand over axle on the rotor core that is formed by stacking by silicon steel sheet, inlay the plate shaped rotor magnetic steel of making by rare earth permanent-magnetic material in this groove, constitute two magnetic poles of rotor, it is characterized in that: be that the center is symmetrical set magnet isolation tank with the d-axis on the rotor core, two magnet isolation tanks lay respectively at up and down the point midway between two " ∧ " shape groove corresponding end, inlay in the magnet isolation tank by rare earth permanent-magnetic material make every the magnetic magnet steel, consistent every the magnetic magnet steel with rotor magnetic steel magnetic line of force direction; " ∧ " shape groove two ends are provided with " L " shape magnetism isolating trench respectively, and " L " shape magnetism isolating trench extends to magnet isolation tank from " ∧ " shape groove end; At the upper left corner of rotor core and rotating pole-piece edge, the lower right corner or the upper right corner and rotating pole-piece edge, the lower left corner be respectively equipped with the pole shoe breach, constituting magnetic circuit with this is asymmetry about the center with the d-axis.
2, rare earth permanent magnet according to claim 1 is characterized in that from the voltage stabilizing single phase synchronous generator: described two on rotor core is that the center is symmetrical set row's magnetic hole with the d-axis every magnetic magnet steel inboard.
3, rare earth permanent magnet according to claim 1 is characterized in that from the voltage stabilizing single phase synchronous generator: described is 2/3～3/3 of rotor magnetic steel thickness every the projected length of magnetic magnet steel on the friendship axle.
4, rare earth permanent magnet according to claim 1 is characterized in that from the voltage stabilizing single phase synchronous generator: the projection of the cannelure width 〉=rotor magnetic steel thickness of described " L " shape magnetism isolating trench on the friendship axle, and level trough length 〉=every the projection of magnetic magnet steel on the friendship axle.
5, rare earth permanent magnet according to claim 1 is characterized in that from the voltage stabilizing single phase synchronous generator: the rotor yoke of described iron core is that the center is symmetrical arranged ventilation hole up and down to hand over axle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420079590 CN2726201Y (en) | 2004-09-16 | 2004-09-16 | Rare-earth permanent magnetic stabilized voltage sinle-phase synchronous generator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420079590 CN2726201Y (en) | 2004-09-16 | 2004-09-16 | Rare-earth permanent magnetic stabilized voltage sinle-phase synchronous generator |
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| CN2726201Y true CN2726201Y (en) | 2005-09-14 |
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| CN 200420079590 Expired - Fee Related CN2726201Y (en) | 2004-09-16 | 2004-09-16 | Rare-earth permanent magnetic stabilized voltage sinle-phase synchronous generator |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101471594A (en) * | 2007-12-26 | 2009-07-01 | 上海双骁机电设备有限公司 | Rare-earth permanent magnet generator rotor |
| CN101771320A (en) * | 2010-02-10 | 2010-07-07 | 无锡东南车辆科技有限公司 | DC brushless electric machine for photovoltaic water pump |
| WO2011026299A1 (en) * | 2009-09-03 | 2011-03-10 | 钻宝电子有限公司 | Rotor structure of permanent magnet generator |
| WO2011088704A1 (en) * | 2010-01-22 | 2011-07-28 | 苏州太通电气有限公司 | High-efficiency and energy-saving permanent magnet synchronous motor |
-
2004
- 2004-09-16 CN CN 200420079590 patent/CN2726201Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101471594A (en) * | 2007-12-26 | 2009-07-01 | 上海双骁机电设备有限公司 | Rare-earth permanent magnet generator rotor |
| WO2011026299A1 (en) * | 2009-09-03 | 2011-03-10 | 钻宝电子有限公司 | Rotor structure of permanent magnet generator |
| WO2011088704A1 (en) * | 2010-01-22 | 2011-07-28 | 苏州太通电气有限公司 | High-efficiency and energy-saving permanent magnet synchronous motor |
| CN101771320A (en) * | 2010-02-10 | 2010-07-07 | 无锡东南车辆科技有限公司 | DC brushless electric machine for photovoltaic water pump |
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Legal Events
| Date | Code | Title | Description |
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| 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: 20050914 Termination date: 20110916 |