CN202190153U - Harmonic excited generator - Google Patents
Harmonic excited generator Download PDFInfo
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- CN202190153U CN202190153U CN2011202784528U CN201120278452U CN202190153U CN 202190153 U CN202190153 U CN 202190153U CN 2011202784528 U CN2011202784528 U CN 2011202784528U CN 201120278452 U CN201120278452 U CN 201120278452U CN 202190153 U CN202190153 U CN 202190153U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
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Abstract
The utility model discloses a harmonic excited generator which solves the problem that the third-harmonic winding and the main winding of the conventional harmonic excited generator have higher voltage waveform distortion rate. The harmonic excited generator comprises a stator, a main winding embedded in an inclined stator slot and a third harmonic winding, wherein the main winding is a double-layer wave winding, the third harmonic winding is a single-layer concentric winding with different turns, i.e. in eight slots under each pole pair of the third harmonic winding, the number of conductors in the second slot and the seventh slot is zero, the turn ratio of the turns of single-layer concentric coils in the first slot and the fifth slot to single-layer concentric coils in the second slot and the forth slot, the sixth slot and the eighth slot is 1:0.707 which is rounded off to an integer; and the main winding adopts a short-pitch winding. The third harmonic winding waveform distortion rate of the harmonic excited generator can be reduced to 15 percent, and the waveform distortion rate of the main winding can be reduced by 4.8 percent; and the harmonic excited generator is applied to mine electric transmission self-dumping trucks, and also can be used in other fields such as railway, electric stations, industrial and mining field, etc.
Description
Technical field
The utility model relates to generator, is specifically related to a kind of harmonic excited generator.
Background technology
Harmonic excited generator is widely used in fields such as power station, portable power source, military refrigerator car with its good phase compound excitation function as the self-excited constant voltage power supply, but is main with the mini power grade how.At present, the moving dumper of large-scale fax such as the 130t in mining field, 154t, 170t is with the main dependence on import of harmonic excited generator.Existing harmonic excited generator main winding comprises two cover windings; Two cover windings adopt double-deck wave winding and are Y-connection respectively, and the voltage swing that this two covers winding sends equates 30 ° of electrical degrees of phase difference; Electric current with identical size, promptly the six phase double star moves 30 ° of electrical degrees.And existing stator slot all with the parallel axes setting of stator; The resultant pitch of two cover main windings of existing harmonic excited generator and first segment are apart from all being whole distance, and promptly synthetic joint 1 distance and first segment are apart from being respectively 2 τ and τ (pole span of τ for calculating with the groove number).The triple-frequency harmonics winding is for waiting circle individual layer wave winding, and its pitch is 1/3 of a main winding, and the voltage-form distortion rate that this harmonic excited generator sends is bigger; Especially triple-frequency harmonics winding; Irregularity of wave form can be unfavorable for rectification control up to 39% (test data), influences electric efficiency simultaneously.
The utility model content
The purpose of the utility model is to overcome the defective that exists in the prior art; A kind of harmonic excited generator is provided; In order to the triple-frequency harmonics winding that solves existing harmonic excited generator and the voltage-form distortion rate problem of higher of main winding, can improve the operational efficiency of generator simultaneously.
For realizing above-mentioned purpose, the technical scheme of the utility model is a kind of harmonic excited generator of design, comprises stator, is embedded in main winding and triple-frequency harmonics winding in the stator slot; Number of stator slots 96, number of poles 8, main winding are double-deck wave winding; It is characterized in that; Described stator slot is a tipper, and said triple-frequency harmonics winding is the individual layer concentric type winding that does not wait circle, promptly the triple-frequency harmonics winding each extremely under 8 grooves in; Wherein, Three-flute and the 7th groove inner wire radical are zero; First groove and the 5th groove are embedded with the individual layer ceoncentrically wound coil; Second groove and the 4th groove be embedded with first groove and the 5th groove in the individual layer ceoncentrically wound coil individual layer ceoncentrically wound coil of connecting; The 6th groove and the 8th groove be embedded with first groove and the 5th groove in the individual layer ceoncentrically wound coil individual layer ceoncentrically wound coil of connecting; The number of turn of the individual layer ceoncentrically wound coil in the individual layer ceoncentrically wound coil in second groove and the 4th groove and the 6th groove and the 8th groove is identical, and the casket of the individual layer ceoncentrically wound coil in the number of turn of the individual layer ceoncentrically wound coil that first groove and the 5th groove are interior and second groove and the 4th groove, the 6th groove and the 8th groove is counted ratio to be 1: 0.707 and to carry out round.
Wherein optimized technical scheme is, the angle of inclination of said tipper is 18 °～45 °.
Optimized technical scheme comprises that also the first segment of said main winding is apart from being 10 grooves, and resultant pitch is whole distance.
Further optimized technical scheme is, the casket number of the individual layer ceoncentrically wound coil in said first groove and the 5th groove is four circles, and the number of turn of the individual layer ceoncentrically wound coil in second groove and the 4th groove, the 6th groove and the 8th groove is three circles.
The advantage and the beneficial effect of the utility model are: the triple-frequency harmonics design of Windings of this harmonic excited generator is special individual layer concentric type winding; Have and do not wait the circle design, its conductor number is arranged by sinusoidal rule, promptly in the winding centerline; The conductor radical is zero; Apart from 90 ° of electrical degree places of winding center line, the conductor radical is maximum, and the wire casing in the stator is obliquely installed.Its advantage is that voltage quality is better, has less irregularity of wave form, and triple-frequency harmonics winding irregularity of wave form can be reduced to 15% (test data).Main winding adopts the short distance wave winding whole apart from wave winding, can reduce irregularity of wave form 4.8% (test data).The described harmonic excited generator of the utility model is applicable on the moving dumper of mining fax, as the main power source of dumper.This generator also can be applicable to other fields such as railway, power station, industrial and mineral.
Description of drawings
Fig. 1 is the main winding elementary diagram of the utility model harmonic excited generator;
Fig. 2 is the triple-frequency harmonics winding connection schematic diagram of the utility model harmonic excited generator.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the embodiment of the utility model is further described.Following examples only are used for more clearly explaining the technical scheme of the utility model, and can not limit the protection range of the utility model with this.
Like Fig. 1, shown in 2, the utility model is a kind of harmonic excited generator, comprises stator, is embedded in away main winding and triple-frequency harmonics winding in the pilot trench; Number of stator slots 96, number of poles 8, main system group is double-deck ripple system group; Described stator slot is a tipper, and the angle of inclination of said tipper is 20 °; Said triple-frequency harmonics system group is not wait the individual layer concentric type system group of circle, promptly the triple-frequency harmonics winding each extremely under 8 grooves in (triple-frequency harmonics magnetic field number of poles is 3 times of first-harmonic, and then the triple-frequency harmonics field pole is apart from τ
32 96/8 * 3=4 groove; Extremely to being 8 grooves); Three-flute and the 7th groove inner wire radical are zero; First groove and the 5th groove are embedded with the individual layer ceoncentrically wound coil; Second groove and the 4th groove be embedded with first groove and the 5th groove in the individual layer ceoncentrically wound coil individual layer ceoncentrically wound coil of connecting; The 6th groove and the 8th groove be embedded with first groove and the 5th groove in the individual layer ceoncentrically wound coil individual layer ceoncentrically wound coil of connecting, the number of turn of the individual layer ceoncentrically wound coil in the individual layer ceoncentrically wound coil in second groove and the 4th groove and the 6th groove and the 8th groove is identical, and the turn ratio of the interior individual layer ceoncentrically wound coil of the number of turn of the individual layer ceoncentrically wound coil in first groove and the 5th groove and second groove and the 4th groove, the 6th groove and the 8th groove is 1: 0.707 and carries out round (being the round number).The first segment of main winding is apart from being 10 grooves (being short pitch), and resultant pitch is whole distance.
During practical implementation; The same with existing product, the main winding of this harmonic excited generator comprises two cover windings, two cover windings is embedded in the stator slot that tilts with axis; 30 ° of electrical degrees of two cover winding phase differences; Two cover windings adopt wave winding and are Y-connection respectively, and the voltage swing that this two covers winding sends equates to have the electric current (promptly the casket number of two cover windings, lead etc. are identical) of identical size.Its difference is that the first segment distance of two cover main windings of this harmonic excited generator is 10 grooves (being short pitch), and resultant pitch is whole distance, and the first segment distance of existing product and resultant pitch all are whole distance.
Further describe as follows in conjunction with accompanying drawing: number of stator slots 96, number of poles 8, three phase windings; Main winding is double-deck wave winding, exports IU, 1V, 1W, 1N and 2U, 2V, 2W respectively, 2N two overlaps independently winding, and this two covers winding has equal-sized voltage; But 30 ° of electrical degrees of phase phasic difference; Winding pitch is 10, and the short distance structure can weaken 5,7 subharmonic.The main winding elementary diagram is seen Fig. 1.
With U is example mutually, and concrete wiring is following:
1U: with the coil (coil numbering with upper strata limit be as the criterion) of N under extremely: 11,35,59,83,10,34,58,82 couple together and the coil of S under extremely: 94,70,46,22,95,71,47,23 be together in series and become one mutually.
2U: with the coil (coil numbering with upper strata limit be as the criterion) of N under extremely: 81,9,33,57,80,8,32,56, couple together, and the coil of S under extremely: 68,44,20,92,69,45,21,93 be together in series and become mutually.
The triple-frequency harmonics winding is designed to not wait the individual layer concentric type winding of circle.Shown in Fig. 2 harmonic wave winding connection schematic diagram: triple-frequency harmonics magnetic field number of poles is 3 times of first-harmonic, and then the triple-frequency harmonics field pole is apart from τ
3=4.In this embodiment; 2～9 grooves be one extremely under a coil groups; Concentric coil outer ring (the individual layer concentric coil in aforesaid first groove and the 5th groove) number of turn and inner ring (being the individual layer ceoncentrically wound coil in aforesaid second groove and the 4th groove, the 6th groove and the 8th groove) turn ratio is 1: 0.707 and carries out round; See that from Fig. 2 promptly the turn ratio of 2～6 coils and 3～5 coils, 7～9 coils is 1: 0.707 and carries out round.In this embodiment; 2～6 coils (being the individual layer concentric coil in aforesaid first groove and the 5th groove) are around four circles; The number of turn of 3～5 coils (being the individual layer ceoncentrically wound coil in aforesaid second groove and the 4th groove) and 7～9 coils (being the individual layer ceoncentrically wound coil in aforesaid the 6th groove and the 8th groove) is 4 * 0.707=2.828; Rounding up after neat is three circles, does not have conductor in No. 3 grooves and No. 8 grooves.The triple-frequency harmonics winding each extremely under coil connect each other and form a coil groups, 12 coil groups (12 extremely to) press all that this rule is arranged, connection.Needs according to exciting voltage, electric current; 12 coil groups of triple-frequency harmonics winding can connect into the parallel branch of varying number; In this embodiment, the triple-frequency harmonics winding has formed four parallel branches, and it is parallel with one another again to be about to 12 per three series connection of coil groups.
The above only is the preferred implementation of the utility model; Should be understood that; For those skilled in the art; Under the prerequisite that does not break away from the utility model know-why, can also make some improvement and retouching, these improvement and retouching also should be regarded as the protection range of the utility model.
Claims (4)
1. a harmonic excited generator comprises stator, is embedded in main winding and triple-frequency harmonics winding in the stator slot, number of stator slots 96; Number of poles 8; Main winding is double-deck wave winding, it is characterized in that, described stator slot is a tipper; Said triple-frequency harmonics winding is the individual layer concentric type winding that does not wait circle, promptly the triple-frequency harmonics winding each extremely under 8 grooves in; Wherein, Three-flute and the 7th groove inner wire radical are zero; First groove and the 5th groove are embedded with the individual layer ceoncentrically wound coil; Second groove and the 4th groove be embedded with first groove and the 5th groove in the individual layer ceoncentrically wound coil individual layer ceoncentrically wound coil of connecting; The 6th groove and the 8th groove be embedded with first groove and the 5th groove in the individual layer ceoncentrically wound coil individual layer ceoncentrically wound coil of connecting; The number of turn of the individual layer ceoncentrically wound coil in the individual layer ceoncentrically wound coil in second groove and the 4th groove and the 6th groove and the 8th groove is identical, and the casket of the individual layer ceoncentrically wound coil in the number of turn of the individual layer ceoncentrically wound coil that first groove and the 5th groove are interior and second groove and the 4th groove, the 6th groove and the 8th groove is counted ratio to be 1: 0.707 and to carry out round.
2. harmonic excited generator as claimed in claim 1 is characterized in that, the angle of inclination of said tipper is 18 °～45 °.
3. harmonic excited generator as claimed in claim 1 is characterized in that, the first segment of said main winding is apart from being 10 grooves, and resultant pitch is whole distance.
4. like claim 2 or 3 described harmonic excited generators, it is characterized in that the casket number of the individual layer ceoncentrically wound coil in said first groove and the 5th groove is four circles, the number of turn of the individual layer ceoncentrically wound coil in second groove and the 4th groove, the 6th groove and the 8th groove is three circles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202784528U CN202190153U (en) | 2011-08-01 | 2011-08-01 | Harmonic excited generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202784528U CN202190153U (en) | 2011-08-01 | 2011-08-01 | Harmonic excited generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202190153U true CN202190153U (en) | 2012-04-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202784528U Expired - Fee Related CN202190153U (en) | 2011-08-01 | 2011-08-01 | Harmonic excited generator |
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| CN (1) | CN202190153U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104113175A (en) * | 2013-04-17 | 2014-10-22 | 永济新时速电机电器有限责任公司 | Brushless synchronous generator of mining electric dump truck and mining electric dump truck |
-
2011
- 2011-08-01 CN CN2011202784528U patent/CN202190153U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104113175A (en) * | 2013-04-17 | 2014-10-22 | 永济新时速电机电器有限责任公司 | Brushless synchronous generator of mining electric dump truck and mining electric dump truck |
| WO2014169686A1 (en) * | 2013-04-17 | 2014-10-23 | 永济新时速电机电器有限责任公司 | Brushless synchronous generator for electric dump truck for mine, and electric dump truck for mine |
| CN104113175B (en) * | 2013-04-17 | 2016-12-28 | 永济新时速电机电器有限责任公司 | Mining electric dumper no-brush synchronous generator and mining electric dumper |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120411 Termination date: 20170801 |
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| CF01 | Termination of patent right due to non-payment of annual fee |