CN201181891Y - Brushless AC excitation speed-changing same-frequency generator - Google Patents
Brushless AC excitation speed-changing same-frequency generator Download PDFInfo
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- CN201181891Y CN201181891Y CNU2008200195423U CN200820019542U CN201181891Y CN 201181891 Y CN201181891 Y CN 201181891Y CN U2008200195423 U CNU2008200195423 U CN U2008200195423U CN 200820019542 U CN200820019542 U CN 200820019542U CN 201181891 Y CN201181891 Y CN 201181891Y
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Abstract
The utility model relates to a generator, in particular to a brushless alternating current excitation variable co-frequency generator. The generator comprises a main shaft, generator rotors and a generator stator; wherein, the generator rotors are fixed on the main shaft; the generator stator is arranged around the generator rotors; an excitation mechanism is assembled on the main shaft; and the excitation mechanism comprises a secondary exciting dynamo, a synchronous excited motor and two primary exciting dynamos, which are assembled on the same shaft as the generator rotors do. Since the generator does not need easily damaged friction parts such as electric brushes, the cost of operation and maintenance is greatly reduced. When the rotation speed of the generator is changed, the frequency of output voltage can always be kept equal to the frequency of the grid, and as a result, the number of automatic synchronization controller can be reduced. The adoption of polyphase rectification can provide high-quality exciting current for an exciting coil, thus further improving the quality of the electric energy outputted by the secondary exciting dynamo, and the stability of the motor.
Description
Technical field
The utility model relates to a kind of generator, especially a kind of brushless ac excitation speed-changing same-frequency generator.
Background technology
High-power low-speed such as wind-driven generator, hydroelectric generator multipolar generator is in order to reach the requirement of generating electricity by way of merging two or more grid systems, it is consistent with mains frequency that the electric voltage frequency that need export under the situation of different rotating speeds keeps, the most modes of frequency conversion that adopt of direct-driving type generator are carried out electronics adjustment output frequency now, because inverter structure complexity, failure rate height, the cost height has become the big obstacle that wind-force, hydroelectric generator generate electricity by way of merging two or more grid systems.In addition, common ac excited generator all has brush, and the existence of friction parts increases substantially the maintenance of generator and operating cost, and shorten useful life.
Summary of the invention
The purpose of this utility model provides a kind of simple in structure, brushless ac excitation speed-changing same-frequency generator that can directly be incorporated into the power networks and need not the high-power frequency conversion device, can follow the variation of line voltage, automatically adjust the amplitude and the frequency of exciting voltage, reach the purpose of high-quality generating.
For achieving the above object, the utility model adopts following technical scheme:
Brushless ac excitation speed-changing same-frequency generator described in the utility model comprises main shaft, is fixedly mounted on the generator amature on the main shaft, and around being arranged on generator amature generator unit stator on every side, dynamo field coil is installed on the generator amature, the generator armature coil is installed on the generator unit stator, generator unit stator by Bearing Installation on main shaft, generator amature is fixedly mounted on the main shaft, it is characterized in that:
Excitation mechanism also is installed on main shaft,
Described excitation mechanism comprises and the coaxial mounted secondary exciter of generator amature, synchronous excitation motor and two one-level exciters, the secondary exciter comprises into secondary armature winding and the secondary excitation rotor that magnetic gap cooperates, the one-level exciter comprises into one-level armature winding and the one-level excitation rotor that magnetic gap cooperates, and the synchronous excitation motor comprises into motor rotor and the motor armature coil that magnetic gap cooperates; Secondary armature winding is fixedly mounted on the inwall of secondary armature end flange cylindraceous, the secondary armature end flange is fixedly set on the main shaft, the secondary magnet exciting coil is installed on the secondary excitation rotor, and the secondary excitation rotor is fixedly mounted on the axle sleeve, and axle sleeve is contained on the main shaft by bearing holder (housing, cover); Also be installed with motor rotor and one-level armature winding support on the axle sleeve simultaneously, one-level armature winding is fixedly mounted on the inboard of one-level armature winding support, the one-level excitation rotor is fixedly mounted on the inboard of end cap side by side, the one-level magnet exciting coil is installed on the one-level excitation rotor, and end cap and motor armature coil are fixedlyed connected with generator unit stator;
The generator armature coil is connected with electrical network by the switch that is incorporated into the power networks, secondary armature winding is electrically connected with dynamo field coil by lead, two one-level armature winding is connected to field coil for motor in the motor rotor and the secondary magnet exciting coil in the secondary excitation rotor by rectification circuit respectively, the motor armature coil is connected with electrical network by motor controling switch, and the one-level magnet exciting coil in the one-level excitation rotor is connected with two adjustable straightening stream field power supplies respectively.
The circumference of generator unit stator is divided into plural stator sections group, have in each stator sections group that quantity equates, equally distributed generator armature coil groove, the width that any two-phase is faced tooth between the generator armature coil groove is identical, be provided with the threephase generator armature coil in the generator armature coil groove of each stator sections group, each phase generator armature coil occupies sector of the same area respectively; Be divided into plural rotor sections group on the circumference of the corresponding generator amature of generator unit stator, the quantity of rotor sections group is identical with the quantity of stator sections group, have in each rotor sections group that quantity equates, equally distributed dynamo field coil groove, adopt three-phase lap wound mode to be provided with dynamo field coil in the dynamo field coil groove; The quantity of the magnetic pole of generator armature coil generation is compared and is differed two in the quantity of the magnetic pole that dynamo field coil in each rotor sections group produces and the corresponding stator sections group.
The circumference of one-level armature winding support is divided into plural one-level exciter set of sectors, have in each one-level exciter set of sectors that quantity equates, equally distributed one-level exciter armature coil groove, the width that any two-phase is faced tooth between the one-level exciter armature coil groove is identical, be provided with heterogeneous one-level armature winding in each group one-level exciter armature coil groove, each phase one-level armature winding occupies sector of the same area respectively; Be divided into plural one-level excitation rotor set of sectors on the circumference of the corresponding one-level excitation rotor of one-level exciter set of sectors, the quantity of one-level exciter machine set of sectors is identical with the quantity of one-level exciter rotor set of sectors, has in each one-level exciter rotor set of sectors that quantity equates, equally distributed one-level excitation pole; The quantity of the one-level excitation pole in the quantity of the magnetic pole that one-level armature winding in each one-level exciter set of sectors produces and the corresponding one-level exciter rotor set of sectors is compared and is differed two.
Described one-level excitation rotor, secondary excitation rotor and motor rotor all adopt Lundell compound rectifier excitation rotor, described Lundell compound rectifier excitation rotor comprises two pawl pole plates that are oppositely arranged, be installed with permanent magnet and field core between two pawl pole plates, twine magnet exciting coil on the field core; The pawl pole plate is discoid, and its marginal portion is along the pawl utmost point of the even a plurality of dentations that distribute of circumference, and this pawl utmost point is magnetic pole, and two pawl pole plates are provided with the extremely staggered form opposing parallel of pawl, faces two pawl utmost points that have different magnetic mutually and constitutes pole pairs; The one-level excitation rotor is fixedly connected on the inboard of end cap by adapter sleeve, and secondary excitation rotor and motor rotor are fixedly mounted on the axle sleeve by adapter sleeve.Adopt after the technique scheme, the utlity model has following advantage:
1, removed rapid wear friction parts such as brush, operation and maintenance cost reduces significantly;
2, generator can keep output voltage frequency identical with mains frequency all the time when rotation speed change, reduces the automatic control equipment that is incorporated into the power networks;
3, adopt poly phase rectification to can be magnet exciting coil high-quality exciting current is provided, and then improve the stability of the secondary excitation machine output quality of power supply and motor.
4, make multipole low-speed generator can directly eliminate high order harmonic component, satisfy the requirement of directly generating electricity by way of merging two or more grid systems.
5, when being used for wind power generation, can save converter plant and speeder, reliability improves greatly, and cost but declines to a great extent.
Description of drawings
Fig. 1 is the structural representation of an embodiment of the utility model;
Fig. 2 is the M part enlarged drawing of Fig. 1;
Fig. 3 is the A-A cutaway view of Fig. 1;
Fig. 4 is the B-B cutaway view of Fig. 1;
Fig. 5 is the deployed configuration schematic diagram of pawl pole plate;
Fig. 6 is the circuit diagram of an embodiment of the utility model;
Fig. 7 is the vectogram of generator output voltage;
Fig. 8 is the deployed configuration schematic diagram of one-level armature winding.
Embodiment
Each accompanying drawing of present embodiment adopts the expression-form of similar profile, but for clear structure and the annexation of representing each several part, hatching does not draw.
As shown in Figure 1-Figure 3, brushless ac excitation speed-changing same-frequency generator described in the utility model comprises main shaft 1, is fixedly mounted on the generator amature 2 on the main shaft 1, and around being arranged on generator amature 2 generator unit stator 3 on every side, dynamo field coil 21 is installed on the generator amature 2, generator armature coil 31 is installed on the generator unit stator 3, on main shaft 1, generator amature 2 is fixedly mounted on the main shaft 1 generator unit stator 3 by Bearing Installation.
The quantity of the magnetic pole of the stator of this generator and the quantity of rotor magnetic pole are unequal.Specific practice is: the circumference of generator unit stator 3 is divided into plural stator sections group, have in each stator sections group that quantity equates, equally distributed generator armature coil groove 8, the width that any two-phase is faced tooth between the generator armature coil groove 8 is identical, be provided with threephase generator armature coil 31 in the generator armature coil groove 8 of each stator sections group, each phase generator armature coil 31 occupies sector of the same area respectively.
Present embodiment adopts two groups of stator sections groups, every group of stator sections group is the sector of 180 degree, even 18 equal-sized generator armature coil grooves 8 that distribute in each stator sections group, threephase generator armature coil 31 respectively accounts for 6 continuous coil grooves, as shown in Figure 3.Certainly, the quantity of stator sections group and generator armature coil groove 8 can be set as required, and the quantity of generator armature coil groove 8 is 3 integral multiple in each stator sections group, and more than or equal to 6 grooves.The quantity of stator sections group is in more than 2, and main shaft 3 suffered magnetic force are radially cancelled out each other, and the vibrations when helping reducing generator work reduce noise, prolong the useful life of main shaft 1.The quantity of generator armature coil groove 8 and the coiling mode of generator armature coil 31 are known technology, are not described in detail in this.
Be divided into plural rotor sections group on the circumference of generator unit stator 3 corresponding generator amatures 2, the quantity of rotor sections group is identical with the quantity of stator sections group, have in each rotor sections group that quantity equates, equally distributed dynamo field coil groove 9, adopt three-phase lap wound mode to be provided with dynamo field coil 21 in the dynamo field coil groove 9; The quantity of the magnetic pole of generator armature coil 31 generations is compared and is differed two in the quantity of the magnetic pole that the dynamo field coil 21 in each rotor sections group produces and the corresponding stator sections group.
In the present embodiment, when the quantity of generator armature coil groove 8 in each stator sections group is 18, generator armature coil 31 adopts concentrates winding, and the quantity of magnetic pole is exactly 20 in the corresponding rotor sections group, and the quantity of magnetic pole also can be 16 certainly.
In the generator of present embodiment, because the quantity of the magnetic pole of generator armature coil 31 generations is compared many two in the quantity of the magnetic pole that the dynamo field coil 21 in each rotor sections group produces and the corresponding stator sections group, make the magnetic phase angle increase by 360 degree, the electromotive force that each phase generator armature coil 31 produces forms the phase angle difference of 120 degree mutually, just in time meets the requirement of three-phase alternating current.Because the quantity of the magnetic pole that dynamo field coil 21 produces and the quantity of generator armature coil groove 8 are unequal, the phase angle of the electromotive force that produces in each generator armature coil 31 will be offset successively, and the deviation of this phase angle adds up one by one.The generator armature coil groove 8 that faces mutually in the present embodiment has the phase difference of 120/6=20 degree, each occupies 6 coil grooves mutually generator armature coil 31, after the phase difference accumulation, synthetic phase angle is (6-1) * 20/2=50 degree, as shown in Figure 7, AH, BH, CH are respectively the superimposed synthetic electromotive force phasor of A, B, C three among the figure, and EA1, EA2, EA3, EA4, EA5, EA6 are respectively the electromotive force that produces in 6 generator armature coil grooves 8 of A phase.Owing to whenever be combined to electromotive force is to be formed by stacking by the electromotive force of inphase angle not, and the harmonic voltage content that produces after the stack of the electromotive force of inphase angle can not reduce significantly, helps directly generating electricity by way of merging two or more grid systems.
The quantity of magnetic pole is lacked than the quantity of generator armature coil groove 8 under two the situation, and its operation principle is the same.
Excitation mechanism also is installed on main shaft 1, and described excitation mechanism comprises and generator amature 2 coaxial mounted secondary exciters, synchronous excitation motor and two one-level exciters.
The secondary exciter comprises into secondary armature winding 91 and the secondary excitation rotor 93 that magnetic gap cooperates.Secondary armature winding 91 is fixedly mounted on the inwall of secondary armature end flange 92 cylindraceous, secondary armature end flange 92 is fixedly mounted on the main shaft 1, secondary magnet exciting coil 931 is installed on the secondary excitation rotor 93, secondary excitation rotor 93 is fixedly mounted on the axle sleeve 94, and axle sleeve 94 is contained on the main shaft 1 by bearing holder (housing, cover);
The one-level exciter comprises into one-level armature winding 81,811 and the one-level excitation rotor 82,821 that magnetic gap cooperates.One-level armature winding 81,811 is fixedly mounted on the inboard of one-level armature winding support 89, one-level armature winding support 89 is fixedly mounted on the axle sleeve 94, one-level excitation rotor 82,821 is fixedly mounted on the inboard of end cap 4 side by side, and end cap 4 and motor armature coil 96 are fixedlyed connected with generator unit stator 3.One-level magnet exciting coil 822,823 is installed on the one-level excitation rotor 82,821.
The synchronous excitation motor comprises into motor rotor 95 and the motor armature coil 96 that magnetic gap cooperates; Motor armature coil 96 is fixedlyed connected with generator unit stator 3, and motor rotor 95 is fixedly mounted on the axle sleeve 94, and field coil for motor 90 is installed on the motor rotor 95.
As shown in Figure 6, generator armature coil 31 is connected with electrical network by the K switch 1 that is incorporated into the power networks, secondary armature winding 91 is electrically connected with dynamo field coil 21 by lead, two one-level armature winding 81,811 are connected to secondary magnet exciting coil 931 and field coil for motor 90 by rectification circuit CD respectively, motor armature coil 96 is connected with electrical network by motor controling switch K2, and the one-level magnet exciting coil 822,823 in the one-level excitation rotor 82,821 is connected with two adjustable straightening stream field power supplies respectively.
As Fig. 2, shown in Figure 4, the one-level exciter has and structure like the class generator, and promptly the quantity of the quantity of magnetic pole of the stator and rotor magnetic pole is unequal, differs two between the two.Be that circumference with one-level armature winding support 89 is divided into plural one-level exciter set of sectors specifically, have in each one-level exciter set of sectors that quantity equates, equally distributed one-level exciter armature coil groove, the width that any two-phase is faced tooth between the one-level exciter armature coil groove is identical, be provided with heterogeneous one-level armature winding 81,811 in each group one-level exciter armature coil groove, each phase one-level armature winding 81,811 occupies sector of the same area respectively; Be divided into plural one-level excitation rotor set of sectors on the circumference of the corresponding one-level excitation rotor 82,821 of one-level exciter set of sectors, the quantity of one-level exciter machine set of sectors is identical with the quantity of one-level exciter rotor set of sectors, has in each one-level exciter rotor set of sectors that quantity equates, equally distributed one-level excitation pole; The quantity of the one-level excitation pole in the quantity of the magnetic pole that the one-level armature winding 81,811 in each one-level exciter set of sectors produces and the corresponding one-level exciter rotor set of sectors is compared and is differed two.
In the present embodiment, the one-level armature winding 81 in each one-level exciter set of sectors has 36 magnetic poles, and 18 is extremely right, adopt to concentrate the coiling of winding method, and every each winding is a phase extremely to being a winding, totally 18 phases, as shown in Figure 8.One-level excitation rotor set of sectors one-level magnet exciting coil 822 has 38 magnetic poles, and 19 is extremely right, and one-level magnet exciting coil 822 is than one-level armature winding more than 81 360 degree electromagnetism angles.
The number of magnetic poles and the arrangement mode of one-level armature winding 811, one-level magnet exciting coil 823 are same as described above.
It is good that the multiple polyphase dynamoelectric gesture of Chan Shenging like this, phase sequence are arranged symmetry, can reduce pulsating current greatly behind heterogeneous bridge rectifier, reduces the filtering cost, improves the generator output quality of power supply.
As Fig. 2, shown in Figure 4, above-mentioned one-level excitation rotor 82,821, secondary excitation rotor 93 and motor rotor 95 all adopt Lundell compound rectifier excitation rotor, described Lundell compound rectifier excitation rotor comprises two pawl pole plates 97 that are oppositely arranged, be installed with permanent magnet 95 and field core 96 between two pawl pole plates 97, twine magnet exciting coil on the field core 96, fix by adapter sleeve between two pawl pole plates 97; Pawl pole plate 97 is discoid, its marginal portion is along the pawl utmost point 99 of the even a plurality of dentations that distribute of circumference, and this pawl utmost point 99 is magnetic pole, and two pawl pole plates 97 are provided with the pawl utmost point 99 staggered form opposing parallel, as shown in Figure 5, face two pawl utmost points 99 that have different magnetic mutually and constitute a pole pair; One-level excitation rotor 82 is fixedly connected on the inboard of end cap 4 by adapter sleeve, and secondary excitation rotor 93 and motor rotor 95 are fixedly mounted on the axle sleeve 94 by adapter sleeve.
Certainly, one-level excitation rotor 82,821, secondary excitation rotor 93 and motor rotor 95 also can adopt common excitation rotor.
In the time of work, main shaft 1 drives fixedly connected generator amature 2, secondary armature end flange 92, secondary armature winding 91 thereon with certain rotational speed, the rotating speed of secondary armature end flange 92, secondary armature winding 91 that is generator amature and secondary excitation generator is identical, and between generator unit stator 3 and one-level armature winding 81,811 and the main shaft 1 because there is bearing to be connected, and be fixed on the base, be fixed.When to synchronous motor input mains frequency power supply the time, motor rotor 82 drives secondary excitation rotor 93 by axle sleeve 94 and one-level armature winding 81,811 rotates with the synchronization that is higher than main shaft 1.
At this moment, adjustable straightening stream field power supply passes to exciting current for respectively one-level excitation rotor 82,821, and produce resultant field jointly with permanent magnet and act on the pawl pole plate 97, one-level armature winding 81,811 is under the drive of motor rotor 95, rotate synchronously with rotational speed N and motor rotor 95, N=f*60/P, f are mains frequency, and P is the motor number of pole-pairs.Make one-level excitation rotor 82,821 form relative rotary motion respectively and between the one-level armature winding 81,811, and on one-level armature winding 81,811, produce the alternating current impression electromotive force, on the magnet exciting coil of this electromotive force through being added to motor rotor 95 and secondary excitation rotor 93 behind the poly phase rectification respectively, make motor rotor 95 and secondary excitation rotor 93 produce compound rectifier excitation magnetic field respectively.
At this moment, to be lower than the speed rotation of secondary excitation rotor 93, rotating speed is N1 to secondary armature winding 91 under the drive of main shaft 1.Relative motion takes place in the magnetic field that makes secondary armature winding 91 and secondary excitation rotor 93 produce, and the differential degree is N-N1.At this moment, producing frequency on secondary armature winding 91 is the three-phase alternating current electromotive force of f1, f1=P1 (N-N1)/60, and wherein P1 is the number of pole-pairs of secondary excitation rotor 93.This three-phase alternating current electromotive force is added on the dynamo field coil 21, and producing rotating speed is the rotating magnetic field of N2.N2=60*f1/P2, P2 are the number of pole-pairs of generator amature 2.
With rotational speed N 1 rotation, produce synthetic rotating speed is the rotating magnetic field of N3 to above-mentioned rotating magnetic field under the drive of main shaft 1, N3=N2+N1, and the generation frequency is the electromotive force of f2 on generator armature coil 31, f2=N3*P2/60.
Because so N3=N2+N1 is f2=N2*P2/60+N1*P2/60.
Again owing to N2=60*f1/P2, so f2=f1+N1*P2/60
Again owing to f1=P1* (N-N1)/60, so f2=P1 (N-N1)/60+N1*P2/60=(P1* (N+N1* (P2-P1))/60
Again owing to N=60*f/P, so f2=f*P1/P+N1* (P2-P1)/60
As shown from the above formula, when P2=P1=P, f2=f,
So as long as the number of pole-pairs of secondary exciter, synchronous excitation motor and generator is identical, the frequency of generator output electromotive force is just identical all the time with mains frequency, realizes variable speed constant frequency generator.
Regulate the input voltage of one-level magnet exciting coil 822, can change motor excitation intensity, regulate motor merit angle, electric requirement takes place frequently together when adapting to the output of a generator variation, regulate the input voltage of one-level magnet exciting coil 823, can change the excitation intensity of secondary exciter, regulate the output voltage of secondary armature winding 91, and then change the excitation intensity of generator, reach the purpose of scalable generator output reactive power.
Claims (4)
1, brushless ac excitation speed-changing same-frequency generator, comprise main shaft (1), be fixedly mounted on the generator amature (2) on the main shaft (1), and around being arranged on generator amature (2) generator unit stator (3) on every side, dynamo field coil (21) is installed on the generator amature (2), generator armature coil (31) is installed on the generator unit stator (3), generator unit stator (3) by Bearing Installation on main shaft (1), generator amature (2) is fixedly mounted on the main shaft (1), it is characterized in that:
On main shaft (1), excitation mechanism is installed also,
Described excitation mechanism comprises and the coaxial mounted secondary exciter of generator amature (2), synchronous excitation motor and two one-level exciters, the secondary exciter comprises into secondary armature winding (91) and the secondary excitation rotor (93) that magnetic gap cooperates, the one-level exciter comprises into one-level armature winding (81,811) and the one-level excitation rotor (82,821) that magnetic gap cooperates, and the synchronous excitation motor comprises into motor rotor (95) and the motor armature coil (96) that magnetic gap cooperates; Secondary armature winding (91) is fixedly mounted on the inwall of secondary armature end flange cylindraceous (92), secondary armature end flange (92) is fixedly set on the main shaft (1), secondary magnet exciting coil (931) is installed on the secondary excitation rotor (93), secondary excitation rotor (93) is fixedly mounted on the axle sleeve (94), and axle sleeve (94) is contained on the main shaft (1) by bearing holder (housing, cover); Also be installed with motor rotor (95) and one-level armature winding support (89) on the axle sleeve (94) simultaneously, one-level armature winding (81,811) is fixedly mounted on the inboard of one-level armature winding support (89), one-level excitation rotor (82,821) is fixedly mounted on the inboard of end cap (4) side by side, one-level magnet exciting coil (822,823) is installed on the one-level excitation rotor (82,821), and end cap (4) and motor armature coil (96) are fixedlyed connected with generator unit stator (3);
Generator armature coil (31) is connected with electrical network by the switch that is incorporated into the power networks (K1), secondary armature winding (91) is electrically connected with dynamo field coil (21) by lead, two one-level armature winding (81,811) be connected to field coil for motor (90) in the motor rotor (95) and the secondary magnet exciting coil (931) in the secondary excitation rotor (93) by rectification circuit (CD) respectively, motor armature coil (96) is connected one-level excitation rotor (82 by motor controling switch (K2) with electrical network, 821) the one-level magnet exciting coil (822 in, 823) be connected with two adjustable straightening stream field power supplies respectively.
2, brushless ac excitation speed-changing same-frequency generator according to claim 1, it is characterized in that: the circumference of generator unit stator (3) is divided into plural stator sections group, have in each stator sections group that quantity equates, equally distributed generator armature coil groove (8), the width that any two-phase is faced tooth between the generator armature coil groove (8) is identical, be provided with threephase generator armature coil (31) in the generator armature coil groove (8) of each stator sections group, each phase generator armature coil (31) occupies sector of the same area respectively; Be divided into plural rotor sections group on the circumference of the corresponding generator amature of generator unit stator (3) (2), the quantity of rotor sections group is identical with the quantity of stator sections group, have in each rotor sections group that quantity equates, equally distributed dynamo field coil groove (9), adopt three-phase lap wound mode to be provided with dynamo field coil (21) in the dynamo field coil groove (9); The quantity of the magnetic pole of generator armature coil (31) generation is compared and is differed two in the quantity of the magnetic pole that dynamo field coil (21) in each rotor sections group produces and the corresponding stator sections group.
3, brushless ac excitation speed-changing same-frequency generator according to claim 1, it is characterized in that: the circumference of one-level armature winding support (89) is divided into plural one-level exciter set of sectors, having quantity in each one-level exciter set of sectors equates, equally distributed one-level exciter armature coil groove, the width that any two-phase is faced tooth between the one-level exciter armature coil groove is identical, be provided with heterogeneous one-level armature winding (81 in each group one-level exciter armature coil groove, 811), each phase one-level armature winding (81,811) occupy sector of the same area respectively; Be divided into plural one-level excitation rotor set of sectors on the circumference of the corresponding one-level excitation rotor of one-level exciter set of sectors (82,821), the quantity of one-level exciter machine set of sectors is identical with the quantity of one-level exciter rotor set of sectors, has in each one-level exciter rotor set of sectors that quantity equates, equally distributed one-level excitation pole; The quantity of the one-level excitation pole in the quantity of the magnetic pole that one-level armature winding (81,811) in each one-level exciter set of sectors produces and the corresponding one-level exciter rotor set of sectors is compared and is differed two.
4, according to claim 1 or 2 or 3 described brushless ac excitation speed-changing same-frequency generators, it is characterized in that: described one-level excitation rotor (82,821), secondary excitation rotor (93) and motor rotor (95) all adopt Lundell compound rectifier excitation rotor, described Lundell compound rectifier excitation rotor comprises the two pawl pole plates (97) that are oppositely arranged, be installed with permanent magnet (95) and field core (96) between two pawl pole plates (97), field core (96) is gone up and is twined magnet exciting coil; Pawl pole plate (97) is discoid, its marginal portion is along the pawl utmost point (99) of the even a plurality of dentations that distribute of circumference, this pawl utmost point (99) is magnetic pole, two pawl pole plates (97) are provided with the staggered form opposing parallel of the pawl utmost point (99), face two pawl utmost points (99) that have different magnetic mutually and constitute a pole pair; One-level excitation rotor (82) is fixedly connected on the inboard of end cap (4) by adapter sleeve, and secondary excitation rotor (93) and motor rotor (95) are fixedly mounted on the axle sleeve (94) by adapter sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200195423U CN201181891Y (en) | 2008-03-24 | 2008-03-24 | Brushless AC excitation speed-changing same-frequency generator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200195423U CN201181891Y (en) | 2008-03-24 | 2008-03-24 | Brushless AC excitation speed-changing same-frequency generator |
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| CN201181891Y true CN201181891Y (en) | 2009-01-14 |
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| CNU2008200195423U Expired - Fee Related CN201181891Y (en) | 2008-03-24 | 2008-03-24 | Brushless AC excitation speed-changing same-frequency generator |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101247064B (en) * | 2008-03-24 | 2010-06-09 | 王光顺 | Brushless ac excitation speed-changing same-frequency generator |
| CN106926691A (en) * | 2017-04-25 | 2017-07-07 | 陈文清 | A kind of free differential drive device |
| CN113193698A (en) * | 2021-05-18 | 2021-07-30 | 北京理工大学 | Cascade type wind driven generator based on magneto-rheological clutch |
-
2008
- 2008-03-24 CN CNU2008200195423U patent/CN201181891Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101247064B (en) * | 2008-03-24 | 2010-06-09 | 王光顺 | Brushless ac excitation speed-changing same-frequency generator |
| CN106926691A (en) * | 2017-04-25 | 2017-07-07 | 陈文清 | A kind of free differential drive device |
| CN113193698A (en) * | 2021-05-18 | 2021-07-30 | 北京理工大学 | Cascade type wind driven generator based on magneto-rheological clutch |
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