CN101783643A - Permanent magnetic brushless constant voltage generator and voltage stabilizing method thereof - Google Patents
Permanent magnetic brushless constant voltage generator and voltage stabilizing method thereof Download PDFInfo
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- CN101783643A CN101783643A CN200910005565A CN200910005565A CN101783643A CN 101783643 A CN101783643 A CN 101783643A CN 200910005565 A CN200910005565 A CN 200910005565A CN 200910005565 A CN200910005565 A CN 200910005565A CN 101783643 A CN101783643 A CN 101783643A
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Abstract
The invention relates to a permanent magnetic brushless constant voltage generator and a voltage stabilizing method thereof. The generator is driven by a speed change wind wheel, the sent constant voltage direct current is output to the electric network after the frequency conversion through an inverter, the leakage reactance per-unit value X<*> of an armature winding at the maximum work rotating speed of the generator equals to the ratio of the difference of the maximum work rotating speed and the minimum work rotating speed of the generator to the minimum work rotating speed, and the range of the leakage reactance per-unit value X<*> is from 1 to 1.8. The method increases the leakage inductance value of the armature winding of the generator through the optimized electromagnetic design on the generator per se, so the leakage inductance resistance of the armature winding of the generator in work is increased, the potential E of the generator is in isometric and synchronous change with the leakage resistance voltage reduction X.I of the armature winding when the rotating speed of the generator is changed in the work rotating speed range, and thus, the constant voltage output is realized. The generator can realize the voltage stabilization without increasing any detection and control links, executing mechanisms and the like, the structure is greatly simplified, the cost is greatly reduced, and the invention has the advantages of simplicity, economy, effectiveness and reliability.
Description
Technical field
The present invention relates to a kind of generator, relate in particular to a kind of brushless, permanently constant voltage generator.In addition, the invention still further relates to the method for stabilizing voltage of this generator.
Background technology
The grid type wind-driven generator is the mechanical energy that wind wheel is caught to be converted into electric energy and to be transported in constant voltage, the constant frequency electrical network to go.When the high-power electric and electronic technology was not mature enough, frequency, voltage that the change generator sends wind-powered electricity generation were very difficult.In order to be delivered directly to wind-powered electricity generation in the electrical network, only select alternating current asynchronous generator or synchronous alternating-current generator for use with the electrical network same frequency.Asynchronous generator can only operate in above 1%～4% left and right sides speed discrepancy scope of synchronous speed, and synchronous generator can only operate in synchronous speed.In order to make generator frequency be fit to electrical network, must be connected with the constant speed wind wheel with the gear box of big gear ratio, the frequency of rotating speed, wind-powered electricity generation and the electrical network of wind wheel and generator all is complementary.The advantage of these two kinds of motors is directly to be incorporated into the power networks without inversion, but has many deficiencies: 1, the power-rotary speed property of motor is harder, is difficult for mating well with the output characteristic curve of wind wheel, also is difficult to improve capturing wind energy efficient to absorb wind energy to greatest extent; 2, when being incorporated into the power networks, easily unit and electrical network are impacted; 3, owing to the unsteadiness of wind speed, easily gear box is produced impact and makes gear box damage the maintenance cost height; 4, generator will often be in shutdown, low speed generating, the frequent input of generating electricity at a high speed, cut out state, and control is complicated, easy break-down; 5, generator no-load loss when hanging down load is bigger, efficient when being difficult to improve underloading, and high efficient area is little, and can only be driven by the lower constant speed wind wheel of average seizure wind energy efficiency.For synchronous generator, a cover field power supply and a control system thereof need be arranged also.Therefore both efficient was not high enough for this electricity generating plan, and was extremely uneconomical; Complex structure has increased production cost again.
Catch the efficient of wind energy in order to improve wind wheel, consider,, can design the speed change wind wheel that almost under all wind regime, all has the higher-energy conversion efficiency by optimizing from the aerodynamics angle.Test shows that when mean wind speed 6.7m/s, the speed change wind wheel is than the wind energy of the constant speed wind wheel seizure of Duoing 15%.Along with the development of power electronic technology, the high power AC converter technique is applied, and the voltage stabilizing of high-power wind turbine and frequency conversion are incorporated into the power networks and can be realized, so the frequency of wind speed round and rotation speed change and electrical network does not have inevitable direct relation.For this reason, each manufacturer develops the novel wind-driven generator by the driving of speed change wind wheel again in the world, but still there is the problem of voltage stabilizing output in such generator.For realizing the voltage stabilizing output of permanent magnet generator, some solutions have also been proposed in the prior art, as disclosed No. 95111026.8 applications for a patent for invention in State Intellectual Property Office's on October 30th, 1996, a kind of voltage stabilization permanent magneto generator and method for stabilizing voltage thereof are disclosed.Described generator comprises stator, rotor, worm-and-wheel gear, actuating motor and sampling control circuit, rotor is connected with the output shaft of engine, the sampling control circuit is connected with the generator voltage output, actuating motor is connected with the sampling control circuit, actuating motor drives a rhizoid thick stick by worm-and-wheel gear and does axial motion, and an end and the stator of this leading screw fix.Its method for stabilizing voltage is to adjust the relative position of generator amature, stator by control circuit and pressure regulation actuator according to load variations, thereby changes the magnetic field couple state between stator and rotor, realizes voltage stabilizing output.The shortcoming of this method is: 1, owing to need set up sampling control circuit and many equipment such as pressure regulation actuator, actuating motor, control system and mechanical structure are all comparatively complicated, have improved production cost greatly; 2, because it has complicated pressure regulation actuator, be difficult in high-rating generator (for example MW class wind turbine) and go up application (because if high-rating generator adopts this method pressure regulation, pressure regulation actuator will be very huge, textural anomaly is heavy, is difficult to realize).In addition, on September 11st, 1999, Granted publication 95239710.2 utility model patents also disclosed a kind of voltage stabilization permanent magneto generator, and described generator has and the similar structure of aforementioned patent, adopts the realization voltage stabilizing that uses the same method; Disclosed CN1262547 application for a patent for invention on August 9th, 2000, a kind of permanent magnet generator method for stabilizing output voltage and voltage stabilization permanent magneto generator are disclosed, it is by being arranged on the acting in conjunction of back-moving spring, balancing spring and spring adjusting nut on the same axis, thereby the relative shift of regulating between stator and the rotor is realized voltage stabilizing, and the essence of its method for stabilizing voltage is identical with aforementioned patent.Therefore all there are above-mentioned many deficiencies in the disclosed method for stabilizing voltage of these patents.
In above-mentioned such generator, the yoke in the armature core is also continued to use conventional art promptly: adopt the multilayer silicon steel sheet to be formed by stacking.There are many shortcomings in this conventional solution, weight as production cost height, complex manufacturing technology, whole yoke is big, weight is crossed the maximization that conference further causes the whole wind force generating system, gives and installs and uses the miniaturization development of making troubles and can't realize equipment.Also there is a technical scheme that can't realize because of himself structure in addition, promptly can't the axially-aligned magnetic pole on yoke, also just can't further realize circumferential offset between the magnetic pole of axially-aligned, stagger.
In addition, in existing mag-dynamo, the square wave that magnetic pole produces can produce a large amount of harmonic waves, causes the motor iron loss bigger, and generating efficiency is lower.
Summary of the invention
In order to solve above-mentioned the problems of the prior art, the invention provides a kind of simple, economical, effectively, the method for stabilizing voltage of brushless, permanently constant voltage generator reliably.
Another technical problem that the present invention will solve is, according to specified criteria, provide a kind of need that generator is optimized Electromagnetic Design, determine specific armature winding leakage inductance value, need not to increase any optional equipment or control circuit and can realize the permanent-magnet DC brushless variable speed constant-pressure generator that constant voltage is exported by the motor natural characteristic.
The main technical schemes that adopts according to the method for stabilizing voltage of a kind of brushless, permanently constant voltage generator provided by the invention is, this generator is by the speed change prime mover driven, the constant voltage direct current that sends transfers to the constant voltage load after the inverter frequency conversion, the perunit value of this generator winding leakage inductance reactance when the maximum functional rotating speed equals the generator maximum, the ratio of minimum working speed difference and minimum working speed, its value scope is 1 to 1.8, this method is computing formula U=f (the n)=E-XI according to generator output voltage, make the ratio of the degree of depth of its storage tank that is used for ccontaining armature winding and width between 3: 1 to 6: 1 during the armature core of design generator, thereby choose the leakage inductance reactance of the armature winding when adjusting generator work, make when the rotating speed of this generator changes in its working speed scope, the leakage reactance pressure drop XI equivalent of the electromotive force E of generator and armature winding, change synchronously, thereby realize constant voltage output.
Method for stabilizing voltage according to a kind of brushless, permanently constant voltage generator provided by the invention also adopts following attached technical scheme: the degree of depth that makes described storage tank when designing the described armature core of this generator is 4: 1 or 5: 1 with the ratio of width;
Select the slot wedge of magnetic conductor for use,, thereby obtain required leakage inductance reactance with the leakage inductance value of the described armature winding of further increase as the described armature winding of sealing;
The main technical schemes that adopts according to brushless, permanently constant voltage generator provided by the invention is: this generator is by the speed change prime mover driven, the constant voltage direct current that sends transfers to the constant voltage load after the inverter frequency conversion, described generator comprises: a stator, comprise armature core, be installed on the winding in the described armature core and be used to install the iron core installing rack of described armature core: a rotor, be rotatably installed on the described stator, by described speed change prime mover driven rotation, the magnetic pole fixed mount that it comprises permanent magnetism magnetic pole and is used to install described permanent magnetism magnetic pole; One heterogeneous full-wave rectifier connects the output of described winding, and it exports described inverter to after with current commutates again; Be formed with the multiple tracks storage tank on the described armature core, described winding is installed in the described storage tank, the degree of depth of described storage tank and width ratio between 3: 1 to 6: 1.
Also adopt following attached technical scheme according to brushless, permanently constant voltage generator provided by the invention: in the described storage tank slot wedge is installed, described slot wedge is a magnetic conductor, and it is closed in described winding in the described storage tank;
The degree of depth of described storage tank is 4: 1 or 5: 1 with the ratio of width;
Described armature core comprises yoke, and described yoke is the cylindrical structure of hollow;
Described permanent magnetism magnetic pole is adhered on the inner surface or outer surface of yoke of described cylindrical structure; The maximum ga(u)ge of the cross section wall thickness of the yoke of described cylinder is less than the sixth of permanent magnetism magnetic pole width;
Have a lozenges between the sidewall of described permanent magnetism magnetic pole and the roof, the angle of described lozenges and sidewall and and the angle of roof at 90 degree between 180 degree; The length of described lozenges is 1/2nd of permanent magnetism magnetic pole thickness;
On the inner surface of described yoke or outer surface, be bonded with many group magnetic pole set, every group of magnetic pole set be spliced vertically successively by the polylith permanent magnetism magnetic pole and successively along circumferential offset, stagger, first permanent magnetism magnetic pole in every group of magnetic pole set and the maximum circumferential offset amount between the tail piece permanent magnetism magnetic pole are 1/6 to 1/8 of permanent magnetism magnetic pole self width;
Be fixed with a plurality of circumferential offset keepers that adopt non-magnet material or permeability magnetic material to make on the inner surface of described yoke or the outer surface, the location notch that be formed with a plurality of circumferential offset each other between the described circumferential offset keeper, staggers, the permanent magnetism magnetic pole in described every group of magnetic pole set is arranged in described location notch.
The beneficial effect that adopts the method for stabilizing voltage of a kind of brushless, permanently constant voltage generator provided by the invention to bring is: (1) is because only by increasing dark, the wide leakage inductance reactance that recently increases winding of winding storage tank on the armature core, and rationally utilized the removal of magnetic property of armature reaction, thereby the realization voltage stabilizing, and guaranteed its voltage regulation result.Compared with prior art, on the one hand, this parameter of electric machine of determining by the optimization Electromagnetic Design is fully realized the generator of voltage stabilizing, do not need to increase any detection, controlling unit and actuator etc., not only structure is greatly simplified, cost reduces greatly, and efficient and reliability improve greatly, and is highly suitable for being similar on this high-rating generator of wind-driven generator; On the other hand, overcome technology prejudice of the prior art.In the prior art, during the design generator,, improve the stability of generator output voltage when load variations, generally all will make great efforts to reduce the leakage inductance reactance of winding for efficient and the power factor that improves generator.And invention thinking of the present invention is just opposite with it---by increasing the constant voltage output that the leakage inductance reactance realizes permanent-magnet variable-speed constant-voltage generator.Therefore not only realized tremendous technological break-through, reached the purpose of permanent-magnet variable-speed constant-voltage output with motor nature output characteristic at high-power DC brushless generator speed constant pressure output facet; And this novel unique design thought also provides more wide thinking to those of ordinary skill in the art to the voltage stabilizing of permanent magnet generator research and development.(2) this method makes the ratio of the degree of depth of its storage tank that is used for ccontaining armature winding and width between 3: 1 to 6: 1 when the armature core of design generator, when realizing voltage stabilizing output, make the manufacturability of whole armature core better and in the process of making more save raw material, reduce production costs.Whole armature core volume is littler, the miniaturization of easier realization equipment.
The beneficial effect that adopts a kind of brushless, permanently constant voltage generator provided by the invention to bring is: (1) generator can be realized directly coupling coupling with the output characteristic of speed change wind wheel, the running speed excursion is wide, and excursion maximum, minimum working speed can reach 70% of maximum functional rotating speed.Both kept the high efficiency of permanent magnet generator, light, advantages of simple structure and simple, and can realize voltage stabilizing automatically again under speed change varying load situation, the constant voltage direct current that it sends only needs can be incorporated into the power networks through inversion.Reduced a large amount of electromechanics in the system and detected and adjusting device, not only simple in structure, reduce cost, also improved operational reliability.(2) ratio of the degree of depth of the utility model design storage tank and width is between 3: 1 to 6: 1, and on the basis of realizing voltage stabilizing output, the manufacturability of making better, is also more saved material, reduced volume.(3) yoke in the armature core is the cylindrical structure of hollow, replaced the technical scheme that existing yoke adopts the multilayer silicon steel sheet to be formed by stacking, production process is simple, easy for installation, and weight alleviates greatly, help realizing the miniaturization development of whole generating system, and cylindrical structure only need have certain wall thickness and get final product, be hollow structure in it, save raw material greatly, reduce production costs.In addition, cylindrical structure can be realized the axial splicing of a plurality of magnetic poles, and can further realize between the magnetic pole can circumferential offset, stagger.(4) the present invention is provided with the magnetic pole of a plurality of axial splicings on yoke, and upwards is offset, staggers in week between the magnetic pole.Can effectively improve field waveform, reduce the moment of resistance, and implementation structure is simple, cost is low.(5) magnetic pole of the present invention has a lozenges between sidewall and roof, this lozenges for and sidewall and roof between have the inclined plane of certain angle.Magnetic pole with this inclined plane, the air-gap field of formation more approaches sine wave, and does not have the magnetic pole of lozenges, and the air-gap field of its formation is similar to trapezoidal wave, and the harmonic component in magnetic field is big.By comparison, harmonic component is avoided, reduced to magnetic pole provided by the invention to greatest extent, and iron loss is reduced greatly, improves generating efficiency, prolongs the useful life of generator.(6) every extremely every the groove number of generator of the present invention is designed to
Or
When
Or
The time, every this design can make the armature ends size reduce extremely near a groove or two grooves, reduces copper consumption; Armature rolls off the production line simple to operate;
Three phase windings are not overlapping each other, do not need phase insulation, alternate punch-through can not take place; (4)
Be to overlap mutually between per two phase windings, the phase insulation consumption is few, and compare the alternate punch-through probability of generation with q 〉=1 low.Reliability improves.
Description of drawings
Fig. 1 is the application principle schematic diagram of brushless, permanently constant voltage generator provided by the invention;
Fig. 2 is the side cut-away view according to the brushless constant voltage generator of inward rotation type permanent magnet provided by the invention;
Fig. 3 is the planar structure schematic diagram of brushless, permanently constant voltage generator armature winding provided by the invention;
Fig. 4 is the axial cutaway view of armature core yoke, magnetic pole; The inner surface that magnetic pole is positioned at the yoke of cylindrical structure is shown;
Fig. 5 is the axial cutaway view of armature core yoke, magnetic pole; The outer surface that magnetic pole is positioned at the yoke of cylindrical structure is shown;
Fig. 6 is the side sectional view of magnetic pole, and the structure of the lozenges on the magnetic pole is shown;
Fig. 7 does not have a formed square-wave waveform of lozenges magnetic pole for what existing generator adopted;
Fig. 8 has the waveform that is similar to sine wave that magnetic pole produced of lozenges for employing;
The structural representation that Fig. 9 circumferentially staggers in the yoke upper edge for magnetic pole;
Figure 10 is the structural representation of circumferential offset keeper;
Figure 11 is the A-A cutaway view of Figure 10;
The rotor expanded view of Figure 12 for seeing from circumferencial direction, the structure that the magnetic pole circumferential offset is shown, staggers;
Embodiment
Below in conjunction with accompanying drawing the present invention is done further detailed description:
The invention provides a kind of method for stabilizing voltage of brushless, permanently constant voltage generator, this generator is by the speed change prime mover driven, the constant voltage direct current that sends transfers to the constant voltage load after the inverter frequency conversion, the perunit value of this generator winding leakage inductance reactance when the maximum functional rotating speed equals the generator maximum, the ratio of minimum working speed difference and minimum working speed, its value scope is 1 to 1.8, this method is computing formula U=f (the n)=E-XI according to generator output voltage, the ratio that makes the degree of depth of its storage tank that is used for ccontaining armature winding and width during the armature core of design generator is between 3: 1 to 6: 1, and this proportion comprises two end points of 3: 1 and 6: 1.Thereby choose the leakage inductance reactance of the armature winding when adjusting generator work, make when the rotating speed of this generator changes in its working speed scope, the leakage reactance pressure drop XI equivalent of the electromotive force E of generator and armature winding, variation synchronously, thus realize constant voltage output.
According to the Electrical Motor theory, the brushless, permanently constant-pressure wind power generator is in the working speed scope, under the situation of ignoring the armature internal resistance, can equivalence become one to be proportional to electromotive force E and power supply that equivalent reactance pressure drop XI forms that rotation speed n changes, its expression formula be U=f (n) ≈ E-XI, and wherein U is a generator output voltage, X is an armature equivalence leakage reactance, I is an equivalent current, equivalent leakage reactance X=2 π fL, and L is equivalent leakage inductance.Method of the present invention is according to above-mentioned expression formula, by generator is carried out Electromagnetic Design, determine suitable reactance X, realize the constant of output voltage U under the speed change by the synchronous variation of reactance pressure drop XI and generator electromotive force E, concrete measure is: by increasing the degree of depth, the width ratio that is used for the storage tank of ccontaining winding in the armature core or adopting the magnetic slot-seal of suitable thickness to obtain the suitable leakage inductance L value of armature winding, make armature winding leakage reactance XX=2 π fL can satisfy leakage reactance pressure drop XI and electromotive force E equivalent, change synchronously, thereby realize voltage stabilizing.
As a kind of specific embodiments of said method, the degree of depth that makes storage tank 111 when designing the armature core of this generator is 4: 1 with the ratio of width.The ratio in this scheme, the degree of depth of storage tank also can be 5: 1 with the ratio of width.
As the further measure of said method, select the slot wedge of magnetic conductor simultaneously for use as sealing armature winding, with the leakage inductance value of further increase armature winding, thereby obtain required leakage inductance reactance.
Be used to implement the specific embodiments of the generator of above-mentioned method for stabilizing voltage, see for details following.
As shown in Figure 1 and Figure 2, a kind of brushless, permanently constant voltage generator, this generator 10 is by the speed change prime mover driven, the constant voltage direct current that sends transfers to constant voltage load 30 after inverter 20 frequency conversions, generator 10 comprises: a stator 1 comprises armature core 11, is installed on the winding 12 in the armature core 11 and is used to install the iron core installing rack 13 of armature core 11.One rotor 2 is rotatably installed on the stator 1, by the rotation of speed change prime mover driven, and the magnetic pole fixed mount 22 that it comprises permanent magnetism magnetic pole 21 and is used to install permanent magnetism magnetic pole 21.One heterogeneous full-wave rectifier 3 connects the output of winding 12, and it exports inverter 20 to after with current commutates again.As shown in Figure 3, be formed with multiple tracks storage tank 111 on the armature core 11, winding 12 is installed in the storage tank 111, the depth H of storage tank 111 and width B ratio between 3: 1 to 6: 1.
In the present embodiment, the depth H of storage tank 111 is 4: 1 with the ratio of width B.In addition, the ratio of the depth H that also can adopt storage tank 111 and width B is 5: 1 a scheme.
As shown in Fig. 3, Fig. 4, Fig. 5, armature core 11 comprises yoke 112, and yoke 112 is the cylindrical structure of hollow.Permanent magnetism magnetic pole 21 is adhered on the inner surface or outer surface of yoke 112 of cylindrical structure, to form outward rotation type generator or interior rotary type generator.As shown in Figure 4, the maximum ga(u)ge of the cross section wall thickness L of the yoke 112 of cylindrical structure is less than the sixth of permanent magnetism magnetic pole 21 width K.
Yoke 112 in the armature core 11 is designed to the cylindrical structure of hollow, replaced the technical scheme that existing yoke adopts the multilayer silicon steel sheet to be formed by stacking, production process is simple, easy for installation, and weight alleviates greatly, help realizing the miniaturization development of whole generating system, and cylindrical structure only need have certain wall thickness and get final product, be hollow structure in it, save raw material greatly, reduce production costs.In addition, cylindrical structure can be realized the axial splicing of a plurality of magnetic poles 21, and can circumferential offset between the magnetic pole 21, stagger.
In addition, the outer surface at the armature casing is provided with the fin 15 that is used to dispel the heat.
As shown in Figure 6, have a lozenges 213 between the sidewall 211 of permanent magnetism magnetic pole 21 and the roof 212, this lozenges 213 for and sidewall 211 and roof 212 between have the inclined plane of certain angle.The angle c of lozenges 213 and sidewall 211 and and the angle a of roof 212 at 90 degree between 180 degree.The length S of lozenges 213 is 1/2nd of permanent magnetism magnetic pole 21 thickness J.
As shown in Figure 8, the magnetic pole with this lozenges 212 21 that the present invention adopts, the air-gap field of formation more approaches sine wave, and does not have the magnetic pole of lozenges, and the air-gap field of its formation is similar to trapezoidal wave, and the harmonic component in magnetic field is big, as shown in Figure 7.By comparison, the structure of magnetic pole 21 provided by the invention, harmonic component is avoided, is reduced in the magnetic field that is produced to greatest extent, and iron loss is reduced greatly, improves generating efficiency, prolongs the useful life of generator.
Extremely shown in Figure 12 as Fig. 9, on the inner surface of yoke 112 or outer surface, be bonded with many group magnetic pole set, every group of magnetic pole set be spliced vertically successively by polylith permanent magnetism magnetic pole 21 and successively along circumferential offset, stagger, first permanent magnetism magnetic pole 21 in every group of magnetic pole set and the maximum circumferential offset amount between the tail piece permanent magnetism magnetic pole 21 are sixth to eight/one of permanent magnetism magnetic pole 21 self width K.
As shown in Figure 9, be fixed with a plurality of circumferential offset keepers 113 that adopt non-magnet material or permeability magnetic material to make on the inner surface of yoke 112 or the outer surface, permanent magnetism magnetic pole 21 in the location notch 115 that be formed with a plurality of circumferential offset each other between the circumferential offset keeper 113, staggers, every group of magnetic pole set is arranged in location notch 115.
As shown in Figure 5, permanent magnetism magnetic pole 21 outer surface utilizations are soaked with the alkali-free glass wool strap 114 of resin or do not have 114 colligations of latitude band and fix.
Every extremely every phase groove of generator provided by the invention count q can for
Or
When
Or
The time, every extremely near a groove or two grooves.Armature core 11 end size of this structure are little, reduce copper consumption; Armature core rolls off the production line simple to operate;
Three phase windings are not overlapping each other, do not need phase insulation, alternate punch-through can not take place;
Be to overlap mutually between per two phase windings, the phase insulation consumption is few, and compare the alternate punch-through probability of generation with q 〉=1 low, and reliability improves.
Claims (12)
1. the method for stabilizing voltage of a brushless, permanently constant voltage generator, this generator is by the speed change prime mover driven, the constant voltage direct current that sends transfers to the constant voltage load after the inverter frequency conversion, the perunit value of this generator winding leakage inductance reactance when the maximum functional rotating speed equals the generator maximum, the ratio of minimum working speed difference and minimum working speed, its value scope is 1 to 1.8, it is characterized in that: this method is computing formula U=f (the n)=E-XI according to generator output voltage, make the ratio of the degree of depth of its storage tank that is used for ccontaining armature winding and width between 3: 1 to 6: 1 during the armature core of design generator, thereby choose the leakage inductance reactance of the armature winding when adjusting generator work, make when the rotating speed of this generator changes in its working speed scope, the leakage reactance pressure drop XI equivalent of the electromotive force E of generator and armature winding, change synchronously, thereby realize constant voltage output.
2. the method for stabilizing voltage of brushless, permanently constant voltage generator according to claim 1 is characterized in that: the degree of depth that makes described storage tank when designing the described armature core of this generator is 4: 1 or 5: 1 with the ratio of width.
3. the method for stabilizing voltage of brushless, permanently constant voltage generator according to claim 1 is characterized in that: select the slot wedge of magnetic conductor as the described armature winding of sealing for use, with the leakage inductance value of the described armature winding of further increase, thereby obtain required leakage inductance reactance.
4. brushless, permanently constant voltage generator, this generator (10) is by the speed change prime mover driven, and the constant voltage direct current that sends transfers to constant voltage load (30) after inverter (20) frequency conversion, and described generator (10) comprising:
One stator (1) comprises armature core (11), is installed on the winding (12) in the described armature core (11) and is used to install the iron core installing rack (13) of described armature core (11):
One rotor (2) is rotatably installed on the described stator (1), and by described speed change prime mover driven rotation, it comprises permanent magnetism magnetic pole (21) and is used to install the magnetic pole fixed mount (22) of described permanent magnetism magnetic pole (21);
One heterogeneous full-wave rectifier (3) connects the output of described winding (12), and it exports described inverter (20) to after with current commutates again;
It is characterized in that: be formed with multiple tracks storage tank (111) on the described armature core (11), described winding (12) is installed in the described storage tank (111), the degree of depth of described storage tank (111) and width ratio between 3: 1 to 6: 1.
5. a kind of brushless, permanently constant voltage generator according to claim 4 is characterized in that: slot wedge (14) is installed in the described storage tank (111), and described slot wedge (14) is a magnetic conductor, and it is closed in described winding (12) in the described storage tank (111).
6. according to claim 4 or 5 described a kind of brushless, permanently constant voltage generators, it is characterized in that: the degree of depth of described storage tank (111) is 4: 1 or 5: 1 with the ratio of width.
7. a kind of brushless, permanently constant voltage generator according to claim 4 is characterized in that: described armature core (11) comprises yoke (112), and described yoke (112) is the cylindrical structure of hollow.
8. a kind of brushless, permanently constant voltage generator according to claim 7 is characterized in that: described permanent magnetism magnetic pole (21) is adhered on the inner surface or outer surface of yoke (112) of described cylindrical structure; The minimum thickness of the cross section wall thickness of the yoke of described cylindrical structure (112) is greater than the sixth of permanent magnetism magnetic pole (21) width.
9. a kind of brushless, permanently constant voltage generator according to claim 4, it is characterized in that: have a lozenges (213) between the sidewall (211) of described permanent magnetism magnetic pole (21) and the roof (212), the angle of described lozenges (213) and sidewall (211) and and the angle of roof at 90 degree between 180 degree, the length of described lozenges (213) is 1/2nd of permanent magnetism magnetic pole (21) thickness.
10. a kind of brushless, permanently constant voltage generator according to claim 8, it is characterized in that: on the inner surface of described yoke (112) or outer surface, be bonded with many group magnetic pole set, every group of magnetic pole set be spliced vertically successively by polylith permanent magnetism magnetic pole (21) and successively along circumferential offset, stagger, first permanent magnetism magnetic pole (21) and the maximum circumferential offset amount between the tail piece permanent magnetism magnetic pole (21) in every group of magnetic pole set are sixth to eight/one of permanent magnetism magnetic pole (21) self width.
11. a kind of brushless, permanently constant voltage generator according to claim 8, it is characterized in that: be fixed with a plurality of circumferential offset keepers (113) that adopt non-magnet material or permeability magnetic material to make on the inner surface of described yoke (112) or the outer surface, the location notch (115) that be formed with a plurality of circumferential offset each other between the described circumferential offset keeper (113), staggers, the permanent magnetism magnetic pole (21) in described every group of magnetic pole set is arranged in described location notch (115).
12. a kind of brushless, permanently constant voltage generator according to claim 4 is characterized in that: every extremely every phase groove of described generator is counted q and is
Or
Wherein, described ε less than
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| CN107269324A (en) * | 2016-04-08 | 2017-10-20 | 马力 | New small turbine generating configuration system |
| CN108288939A (en) * | 2018-01-03 | 2018-07-17 | 广东美芝制冷设备有限公司 | Compressor and refrigeration equipment |
| WO2019134375A1 (en) * | 2018-01-03 | 2019-07-11 | 广东美芝制冷设备有限公司 | Compressor and refrigeration equipment |
| CN110210086A (en) * | 2019-05-20 | 2019-09-06 | 上海电机系统节能工程技术研究中心有限公司 | A kind of motor electromagnetic design method based on probability analysis |
| CN110380531A (en) * | 2019-06-27 | 2019-10-25 | 康富科技股份有限公司 | A kind of dedicated no-brush synchronous generator of UPS |
| CN117013598A (en) * | 2023-07-10 | 2023-11-07 | 中节能(象山)环保能源有限公司 | Outlet voltage constant voltage control method, system, storage medium and intelligent terminal |
-
2009
- 2009-01-20 CN CN200910005565A patent/CN101783643A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102185551A (en) * | 2011-05-13 | 2011-09-14 | 东方电气（乐山）新能源设备有限公司 | Method for calculating electromagnetism of MW-level doubly-fed wind driven generator |
| CN107269324A (en) * | 2016-04-08 | 2017-10-20 | 马力 | New small turbine generating configuration system |
| CN108288939A (en) * | 2018-01-03 | 2018-07-17 | 广东美芝制冷设备有限公司 | Compressor and refrigeration equipment |
| WO2019134375A1 (en) * | 2018-01-03 | 2019-07-11 | 广东美芝制冷设备有限公司 | Compressor and refrigeration equipment |
| CN110210086A (en) * | 2019-05-20 | 2019-09-06 | 上海电机系统节能工程技术研究中心有限公司 | A kind of motor electromagnetic design method based on probability analysis |
| CN110210086B (en) * | 2019-05-20 | 2023-02-03 | 上海电机系统节能工程技术研究中心有限公司 | Motor electromagnetic design method based on probability analysis |
| CN110380531A (en) * | 2019-06-27 | 2019-10-25 | 康富科技股份有限公司 | A kind of dedicated no-brush synchronous generator of UPS |
| CN117013598A (en) * | 2023-07-10 | 2023-11-07 | 中节能(象山)环保能源有限公司 | Outlet voltage constant voltage control method, system, storage medium and intelligent terminal |
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