CN101483371A - Speed regulating electricity generator with constant frequency - Google Patents
Speed regulating electricity generator with constant frequency Download PDFInfo
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- CN101483371A CN101483371A CNA2008100137136A CN200810013713A CN101483371A CN 101483371 A CN101483371 A CN 101483371A CN A2008100137136 A CNA2008100137136 A CN A2008100137136A CN 200810013713 A CN200810013713 A CN 200810013713A CN 101483371 A CN101483371 A CN 101483371A
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Abstract
The present invention relates to a speed governing frequency constant electricity generator that suitable for low speed multi-polar generator, which comprises a chief axis, a rotor fixedly mounted on the chief axis and a stator surrounds the rotor, wherein the stator is mounted on the chief axis through bearings; the rotor comprises claw pole plate, iron core and rotor coil, wherein the iron core is fixedly mounted between two claw pole plates that against each other; the claw pole plates are fixedly mounted on the chief axis through mounting holes in center; a plurality of iron cores are distributed around the chief axis evenly with rotor coil winding on them; the stator is in drum shape with one end of the drum wall fixedly connecting a shell cover; center of the shell cover is pluged on the chief axis through bearings; stator coil fixedly mounted on the inner side of the drum wall matches with the rotor coil; a terminal cap is mounted through bearings on the chief axis on the other side of the drum wall; the inside of the terminal cap is fixedly connected with a auxiliary stator, wherein the auxiliary stator comprises a auxiliary iron core and a auxiliary stator coil winding on the auxiliary iron core.
Description
Technical field
The present invention relates to a kind of generator, especially a kind of speed regulating electricity generator with constant frequency that is suitable for the low speed multipolar 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, need under the situation of different rotating speeds, export the voltage of same frequency, the most modes of rectification-inversion-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.
Summary of the invention
The purpose of this invention is to provide a kind of simple in structure, rotating speed is low, can directly be incorporated into the power networks and need not the speed regulating electricity generator with constant frequency that rectification-inverter just can change generator speed.
For achieving the above object, the present invention adopts following technical scheme:
Speed regulating electricity generator with constant frequency of the present invention comprises main shaft, is fixedly mounted on the rotor on the main shaft, and around the stator that is arranged on peritrochanteric, stator by Bearing Installation on main shaft, it is characterized in that: rotor comprises pawl pole plate, iron core, rotor coil, iron core is fixedly mounted between two pawl pole plates that are oppositely arranged, the pawl pole plate is fixedly mounted on the main shaft by the installing hole at its center, a plurality of iron cores be evenly distributed on main shaft around, twine rotor coil on the iron core; Stator is round barrel shape, the fixedly connected end cap of an end of its barrel wall, and the center of end cap is inserted on the main shaft by bearing, and the inboard of bucket wall is installed with stator coil, and the iron core of stator coil becomes magnetic gap to cooperate with the iron core of rotor coil; By Bearing Installation end cap is arranged on the main shaft of the bucket wall opposite side relative with end cap, the inboard of end cap is fixedly connected with auxiliary stator, and auxiliary stator comprises auxiliary iron core and the auxiliary stator coil that is wrapped on the auxiliary iron core; Also be installed with secondary rotor on main shaft, the secondary rotor coil stationary is installed in the inboard of secondary rotor; The iron core of secondary rotor coil becomes magnetic gap to cooperate with the iron core of auxiliary stator coil; Rotor coil is electrically connected with the secondary rotor coil, and the auxiliary stator coil connects frequency converter; Stator coil be connected output; Stator, end cap are fixedly mounted on the base.
The pawl pole plate is discoid, and its marginal portion is along evenly the distribute pawl utmost point of an even-even dentation of circumference, and the shape of the pawl utmost point is approximate trapezoid, and the pawl utmost point is arranged to the parallel axes of main shaft 1, perpendicular to the pawl pole plate.
By bearing holder (housing, cover) auxiliary adapter sleeve is housed on main shaft, auxiliary adapter sleeve is fixedlyed connected with end cap; The two ends of auxiliary adapter sleeve respectively fixedly mount an auxiliary jaw pole plate, and auxiliary iron core and auxiliary stator coil stationary are installed between the two auxiliary jaw pole plates of opposing parallel setting, and a plurality of auxiliary iron cores evenly distribute around main shaft.
Be installed with adapter sleeve by flat key on main shaft, two pawl pole plates are fixedly mounted on the two ends of adapter sleeve respectively.
Two cover rotors are installed on the main shaft of same stator inboard side by side, and the rotor coil of two cover rotors is connected in parallel, and the magnetic pole of two rotor coils is installed in the mode that differs 60 degree facies tracts.
Adopt after the technique scheme, the present invention has following advantage:
1, adopt the method that changes the exciting voltage frequency to adjust generator speed, the tracking frequency action is fast, can satisfy the demand of generating electricity by way of merging two or more grid systems of the big generator of rotation speed change such as wind-driven generator, hydroelectric generator; It is simple to operate to be incorporated into the power networks;
2, adopt stator coil to be connected, need not to be provided with brush with outside, simpler, the long service life of structure, maintenance cost is low;
3, adopt the excitation coil structure of distributed minor diameter, its resistance is little, and self energy consumption is low, helps reducing manufacturing cost;
5, stator and rotor are directly installed on the same main shaft, and concentricity height, air gap clearance are little, reduce production costs, and improve the stability of generator.
6, adopt the method that changes the exciting voltage amplitude to change the magnetic flux of magnet exciting coil, can adjust the output reactive power, improve the quality of generator output electric energy.
7, can satisfy the requirement that low speed power such as wind-driven generator, hydroelectric generator directly drive, save speeder, improve the reliability of generator, and the generator diameter reduce greatly.
Description of drawings
Fig. 1 is the structural representation of one embodiment of the present of invention;
Fig. 2 is the A-A cutaway view of Fig. 1;
Fig. 3 is the deployed configuration schematic diagram of pawl pole plate.
Embodiment
As shown in Figure 1, speed regulating electricity generator with constant frequency of the present invention comprises main shaft 1, is fixedly mounted on the rotor on the main shaft 1, and around the stator 3 that is arranged on peritrochanteric, stator 3 by Bearing Installation on main shaft 1.Rotor comprises pawl pole plate 2, iron core 51, rotor coil 5, iron core 51 is fixedly mounted between two pawl pole plates 2 that are oppositely arranged, pawl pole plate 2 is discoid, adopt the good material of magnetic property to make, its marginal portion is along evenly the distribute pawl utmost point 21 of an even-even dentation of circumference, the shape of the pawl utmost point 21 is approximate trapezoid, and the pawl utmost point 21 is arranged to the parallel axes of main shaft 1, perpendicular to pawl pole plate 2.As Fig. 2, shown in Figure 3, two pawl pole plates 2 are provided with the pawl utmost point 21 staggered form opposing parallel.Pawl pole plate 2 is fixedly mounted on the main shaft 1 by the installing hole at its center, a plurality of iron cores 51 be evenly distributed on main shaft 1 around, twine rotor coil 5 on the iron core 51; Stator 3 is round barrel shape, the fixedly connected end cap 31 of an end of its barrel wall, and the center of end cap 31 is inserted on the main shaft 1 by bearing, and the inboard of bucket wall is installed with stator coil 7, and the iron core of stator coil 7 becomes magnetic gap to cooperate with the iron core of rotor coil 5.Such rotor can be that 1 pair 1 ground cooperates with stator 3, also can be that two or more rotors cooperate a stator 3, embodiment as shown in Figure 1 is equipped with two cover rotors side by side on the main shaft 1 of same stator 3 inboards, the rotor coil 5 of two cover rotors is connected in parallel, and the magnetic pole of two rotor coils 5 is installed in the mode that differs 60 degree facies tracts.Can improve the quality of generator output electric energy by the high order harmonic component of different magnetic pole phase angle reduction stator coil 7 output voltages of two cover rotors like this, satisfy the requirement of directly being incorporated into the power networks.
As shown in Figure 1, by Bearing Installation end cap 8 is arranged on the main shaft 1 of the bucket wall opposite side relative with end cap 31, the inboard of end cap 8 is fixedly connected with auxiliary stator, and auxiliary stator comprises auxiliary iron core 9 and is wrapped in auxiliary stator coil 10 on the auxiliary iron core 9; Also be installed with secondary rotor 12 on main shaft 1, secondary rotor coil 11 is fixedly mounted on the inboard of secondary rotor 12; The iron core of secondary rotor coil 11 becomes magnetic gap to cooperate with the iron core of auxiliary stator coil 10; Rotor coil 5 is electrically connected with secondary rotor coil 11; Stator coil 7 connects output; Auxiliary stator coil 10 connects frequency converter.Secondary rotor coil 11 and auxiliary stator coil 10 reality have constituted the exciter of a generator like this.
The mounting means of concrete secondary rotor coil 11 and auxiliary stator coil 10 has multiple, and present embodiment is by bearing holder (housing, cover) auxiliary adapter sleeve 15 to be housed on main shaft 1, and auxiliary adapter sleeve 15 is fixedlyed connected with end cap 8 by the bearing shell; The two ends of auxiliary adapter sleeve 15 respectively fixedly mount an auxiliary jaw pole plate 16, and auxiliary iron core 9 and auxiliary stator coil 10 are fixedly mounted between the two auxiliary jaw pole plates 16 of opposing parallel setting, and a plurality of auxiliary iron cores 9 evenly distribute around main shaft 1.The shape of auxiliary jaw pole plate 16 is identical with pawl pole plate 2, for discoid, adopt the good material of magnetic property to make, its marginal portion is along evenly the distribute auxiliary jaw utmost point 17 of an even-even dentation of circumference, the shape of the auxiliary jaw utmost point 17 is approximate trapezoid, and the auxiliary jaw utmost point 17 is arranged to the parallel axes of main shaft 1, perpendicular to auxiliary jaw pole plate 16.Two auxiliary jaw pole plates 16 are provided with the auxiliary jaw utmost point 17 staggered form opposing parallel.Certainly, assisted adapter sleeve 15 short circuits for fear of the magnetic field that auxiliary stator coil 10 produces, auxiliary adapter sleeve 15 should adopt non-magnetic material to make, if adopt the ferrous materials of magnetic conduction in order to reduce cost, then should between auxiliary adapter sleeve 15 and auxiliary jaw pole plate 16, the pad of being made by non-magnet_conductible material be set at least.The two poles of the earth that can guarantee the magnetic field that auxiliary stator coil 10 produces like this are distributed in respectively on two auxiliary jaw pole plates 16, and not by auxiliary adapter sleeve 15 short circuits.
Certainly, the connected mode of pawl pole plate 2 and main shaft 1 also can have multiple, and for the ease of installing, reducing production costs, present embodiment is installed with the two ends that 6, two pawl pole plates 2 of adapter sleeve are fixedly mounted on adapter sleeve 6 respectively by flat key on main shaft 1.This adapter sleeve 6 should adopt non-magnetic material to make, if adopt the ferrous materials of magnetic conduction in order to reduce cost, then at least the pad of being made by non-magnet_conductible material should be set between adapter sleeve 6 and pawl pole plate 2.The two poles of the earth that can guarantee the magnetic field that iron core 51 produces like this are distributed in respectively on two pawl pole plates 2, and not by main shaft 1 short circuit.
In the time of work, main shaft 1 drive fixedly connected thereon rotor and secondary rotor 12 with certain rotational speed, and stator 3 and end cap 8, auxiliary adapter sleeve 15 and be installed in auxiliary iron core on the auxiliary adapter sleeve 15, auxiliary jaw pole plate 16 because there is bearing to connect, and be fixed on the base, be fixed.Import the additive excitation electric current of certain frequencies for auxiliary stator coil 10 by frequency converter, the frequency of this additive excitation electric current is defined as F1.So just producing frequency on the auxiliary jaw utmost point 17 is the alternation magnetic of F1, and we are defined as N1 the rotating speed of secondary rotor coil 11, when secondary rotor coil 11 time with inswept this alternating magnetic field of rotational speed N 1, and the relative motion that produces cutting magnetic line.And the generation frequency is the excitation electromotive force of FA on secondary rotor coil 11, and FA=F1+N1*P1/60, P1 are the number of pole-pairs of secondary rotor coil 11.Because secondary rotor coil 11 is electrically connected with rotor coil 5, at this moment, the excitation electromotive force is applied on the rotor coil 5, producing frequency on the pawl utmost point 21 is the alternating magnetic field of FA, when this alternating magnetic field under the drive of main shaft 1 with the rotation of the speed of N1 in, this alternating magnetic field cutting stator coil 7, and to produce frequency on stator coil 7 be the output electromotive force of FB, FB=FA+N1*P2/60=F1+N1* (P1+P2)/60, P2 are the number of pole-pairs of stator coil 7.Because P1, P2 are constant, FB equals mains frequency, so, as long as adjust additive excitation frequency F1, just can change the rotational speed N 1 of generator, realize the purpose of generator speed governing constant frequency.
When additive excitation voltage raise, the additive excitation electric current increased thereupon, and the excitation electromotive force also increases, and the exciting current that is applied on the rotor coil 5 also increases, and at this moment, the output electromotive force that produces on stator coil 7 also increases.Otherwise when additive excitation voltage reduced, the output electromotive force also decreased.This generator can easily be realized the adjustment of output voltage, and then adjusts generator is carried size from reactive power to electrical network.
When being used for wind-driven generator as present embodiment, air velocity transducer is connected with frequency converter, the output frequency that makes frequency converter changes with the rotating speed of wind speed, can reach the purpose that the rotating speed of generator changes with change of wind velocity, realize that generator moves under optimum speed, improve the ability that generator is caught wind energy.
When generator need directly be incorporated into the power networks, as long as automatically adjust the output frequency and the amplitude of frequency converter, just can realize simple rapid combination, solved under the power rotary speed unstabilization stable condition synchronous generator complicated problems that is incorporated into the power networks.
This portion of external is adjusted circuit and generator speed sensing and converter technology for existing known technology, discusses no longer in detail at this.
Claims (5)
1, speed regulating electricity generator with constant frequency, comprise main shaft (1), be fixedly mounted on the rotor on the main shaft (1), and around the stator that is arranged on peritrochanteric (3), stator (3) by Bearing Installation on main shaft (1), it is characterized in that: rotor comprises pawl pole plate (2), iron core (51), rotor coil (5), iron core (51) is fixedly mounted between the two pawl pole plates (2) that are oppositely arranged, pawl pole plate (2) is fixedly mounted on the main shaft (1) by the installing hole at its center, a plurality of iron cores (51) be evenly distributed on main shaft (1) around, iron core (51) go up to twine rotor coil (5); Stator (3) is round barrel shape, the fixedly connected end cap of one end (31) of its barrel wall, the center of end cap (31) is inserted on the main shaft (1) by bearing, and the inboard of bucket wall is installed with stator coil (7), and the iron core of stator coil (7) becomes magnetic gap to cooperate with the iron core of rotor coil (5); The main shaft (1) of the bucket wall opposite side relative with end cap (31) is gone up has end cap (8) by Bearing Installation, the inboard of end cap (8) is fixedly connected with auxiliary stator, and auxiliary stator comprises auxiliary iron core (9) and is wrapped in auxiliary stator coil (10) on the auxiliary iron core (9); Also be installed with secondary rotor (12) on main shaft (1), secondary rotor coil (11) is fixedly mounted on the inboard of secondary rotor (12); The iron core of secondary rotor coil (11) becomes magnetic gap to cooperate with the iron core of auxiliary stator coil (10); Rotor coil (5) is electrically connected with secondary rotor coil (11), and auxiliary stator coil (10) connects frequency converter; Stator coil (7) be connected output; Stator (3), end cap (8) are fixedly mounted on the base (18).
2, speed regulating electricity generator with constant frequency according to claim 1, it is characterized in that: pawl pole plate (2) is for discoid, its marginal portion is along evenly the distribute pawl utmost point (21) of an even-even dentation of circumference, the shape of the pawl utmost point (21) is approximate trapezoid, and the pawl utmost point (21) is arranged to the parallel axes of main shaft 1, perpendicular to pawl pole plate (2).
3, speed regulating electricity generator with constant frequency according to claim 1 and 2 is characterized in that: go up at main shaft (1) and by bearing holder (housing, cover) auxiliary adapter sleeve (15) is housed, auxiliary adapter sleeve (15) is fixedlyed connected with end cap (8); The two ends of auxiliary adapter sleeve (15) respectively fixedly mount an auxiliary jaw pole plate (16), auxiliary iron core (9) and auxiliary stator coil (10) are fixedly mounted between the two auxiliary jaw pole plates (16) of opposing parallel setting, and a plurality of auxiliary iron cores (9) evenly distribute around main shaft (1).
4, speed regulating electricity generator with constant frequency according to claim 1 and 2 is characterized in that: go up at main shaft (1) and be installed with adapter sleeve (6) by flat key, two pawl pole plates (2) are fixedly mounted on the two ends of adapter sleeve (6) respectively.
5, speed regulating electricity generator with constant frequency according to claim 1 and 2, it is characterized in that: two cover rotors are installed on the main shaft (1) of same stator (3) inboard side by side, the rotor coil (5) of two cover rotors is connected in parallel, and the magnetic pole of two rotor coils (5) is installed in the mode that differs 60 degree facies tracts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100137136A CN101483371A (en) | 2008-01-07 | 2008-01-07 | Speed regulating electricity generator with constant frequency |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100137136A CN101483371A (en) | 2008-01-07 | 2008-01-07 | Speed regulating electricity generator with constant frequency |
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| Publication Number | Publication Date |
|---|---|
| CN101483371A true CN101483371A (en) | 2009-07-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100137136A Pending CN101483371A (en) | 2008-01-07 | 2008-01-07 | Speed regulating electricity generator with constant frequency |
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| Country | Link |
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| CN (1) | CN101483371A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102437699A (en) * | 2011-10-31 | 2012-05-02 | 王光顺 | Direct grid-connected variable speed constant frequency generator |
| CN103401388A (en) * | 2013-07-24 | 2013-11-20 | 王自强 | Brushless variable-speed constant-frequency two-stage double-fed generator |
| CN104467346A (en) * | 2014-10-24 | 2015-03-25 | 倪有源 | Method for weakening permanent magnet stepping motor cogging torque |
| CN112769260A (en) * | 2020-12-28 | 2021-05-07 | 中国原子能科学研究院 | Rotor of special motor for compensating adjusting rod driving mechanism |
-
2008
- 2008-01-07 CN CNA2008100137136A patent/CN101483371A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102437699A (en) * | 2011-10-31 | 2012-05-02 | 王光顺 | Direct grid-connected variable speed constant frequency generator |
| CN102437699B (en) * | 2011-10-31 | 2013-06-12 | 王光顺 | Direct grid connection speed change constant frequency generator |
| CN103401388A (en) * | 2013-07-24 | 2013-11-20 | 王自强 | Brushless variable-speed constant-frequency two-stage double-fed generator |
| CN104467346A (en) * | 2014-10-24 | 2015-03-25 | 倪有源 | Method for weakening permanent magnet stepping motor cogging torque |
| CN112769260A (en) * | 2020-12-28 | 2021-05-07 | 中国原子能科学研究院 | Rotor of special motor for compensating adjusting rod driving mechanism |
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Open date: 20090715 |