CN2497469Y - Synchronized generator proper fraction slot sine winding - Google Patents
Synchronized generator proper fraction slot sine winding Download PDFInfo
- Publication number
- CN2497469Y CN2497469Y CN 01251992 CN01251992U CN2497469Y CN 2497469 Y CN2497469 Y CN 2497469Y CN 01251992 CN01251992 CN 01251992 CN 01251992 U CN01251992 U CN 01251992U CN 2497469 Y CN2497469 Y CN 2497469Y
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Abstract
The utility model discloses a true fractional-slot sine winding for a synchronous generator. When the number q of slots of per pole per phase q of the true fractional-slot sine winding for a synchronous generator is less than 1, the sine windings wind for a plurality of times by loop special windings with a two-to-one turn ratio, and form double-layer and three-layer symmetrical collocation; the utility model is simpler on craftsmanship than a unequal-turn concentric type sine winding, and causes the phase voltage waveform of the motor in a state of high sine, and causes the harmonic wave lower than the magnetometive sine windings of the unequal-turn concentric type double-layer low harmonic wave; the utility model is easy for making precision type advanced medium-frequency alternating current, and satisfies the demands of equipment with requirements of high electric performance. As q is less than 1, the motor has small volume and light weight, and as the true fractional-slot sine windings cause that the medium-frequency voltage waveform is in a state of high sine, the waveform aberration rate of the wire voltage and the phase voltage is both less than 1 percent, and the electric characteristic is especially excellent, so the utility model reaches both China advanced level and international advanced level.
Description
Technical field
The utility model relates to a kind of power-supply device, especially a kind of synchronous generator proper faction groove sinusoidal winding.
Background technology
At present, general multipole synchronous generator factor receptor is long-pending to be limit, and the every phase groove of every number is counted q and usually got mark.And in intermediate frequency generator often q also may get mark less than 1.Q is double-deck short distance formula structure less than 1 fractional-slot by general AC Windings principle, and the irregularity of wave form that can't accomplish to make its line voltage and phase voltage is all less than 2% level.
The utility model content
The purpose of this utility model is to provide a kind of synchronous generator proper faction groove sinusoidal winding, this synchronous generator proper faction groove sinusoidal winding provides a kind of concrete winding construction, this structure can overcome above-mentioned defective, can make the irregularity of wave form of line voltage and phase voltage equal＜1%, reach leading domestic level, also reach world-class levels, make that this kind high-quality intermediate frequency power supply need not import.
The technical solution of the utility model is: the every extremely every phase groove of a kind of synchronous generator proper faction groove sinusoidal winding is counted q＜1, and this synchronous generator proper faction groove sinusoidal winding is by two kinds of pitches, two kinds of numbers of turn at double than coil two, three layer of three phase winding of forming constitute.This winding is to connect around connecting down the symmetric winding that the position is divided equally in groove by non junction.Containing two kinds of numbers of turn becomes the coil of two multiple proportions to form.Single-phase winding or two phase windings or three phase windings formed, or polyphase windings contain two kinds of numbers of turn and become the coil of two multiple proportions to form in every phase winding.
Advantage of the present utility model is: 1) realized fractional-slot q＜1 simple in structure, technology is traditional and can constitute the purpose of positive chorded winding.And its voltage harmonic content is lower than the positive chorded winding that does not wait circle concentric type structure; 2) though three phase windings by double-deck and three layers constitute, but still realized the jointless winding down that connects continuously, be better than other pair, three-decker winding be difficult to make non junction and connect continuously under the defective of winding; Also can arrange excitation winding in the bilayer, make that generator unit stator is that three layers of copper factor are even substantially, economical rationality.3) because purpose simple in structure, that technology convenient, volume is little has not only been realized in q＜1, make generator line voltage and phase voltage waveform all highly sinusoidal again, the electric property excellence, can make the precision voltage source of high-precision naval vessels, ground, airport intermediate frequency power supply and precision instrumentation checkout equipment etc. as core technology, electric property is on the leading domestic level, and also reaches world-class levels.
Description of drawings
Fig. 1 is the utility model synchronous generator proper faction groove sinusoidal winding A phase coil layout plan;
Fig. 2 is the humorous wave winding of the utility model synchronous generator proper faction groove sinusoidal winding position view that rolls off the production line.
Embodiment
A kind of synchronous generator proper faction groove sinusoidal winding, this synchronous generator proper faction groove sinusoidal winding for example generator unit stator groove number is 21 grooves, number of poles is 8 utmost points, the number of phases is 3 phases, then every extremely every phase groove number is q=21/8 * 3=7/8, coil groups A presses mutually that figure below one is arranged and table two structure is formed, all the other B mutually and C and A phase structure roughly the same, be 120 ° of phase differences of mutual deviation.Above-mentioned composition is such, and the A phase winding is by two kinds of spans, and a kind of is 1-3, totally 7 circles, another kind be 1-5,1 circle only, formation non junction winding, this 8 turn ratio of enclosing be 1: 2 two kinds, the number of turn that thick line is represented is 2 times of compositions of the fine rule number of turn.These 8 kinds of number of turns be arranged in the groove the position as shown in Table, wherein 1,5; 8, be three layers in 12,15,19 6 grooves, and in all the other grooves be two layers that after they form three-phase, outside copper factor hangs down in the groove 3,10,17, by chance can arrange the excitation source winding in it, all the other copper factors are identical.Figure one winding is equipped with skewed slot 7/8 arranges that calculating shows, the harmonic content ratio of voltage is as follows, if first-harmonic is 1, then 3,5,7,11,13 ... inferior harmonic content is respectively 0,0.0002,0.0026,0.0004,0.0002 ..., line voltage, phase voltage waveform aberration rate 0.9% and 0.8%.This synchronous generator proper faction groove sinusoidal winding comprises: 30KW, a phase voltage 115V, 400HZ, and three-phase four-wire system, 3000r/min intermediate frequency brushless generator, the usefulness of ground plane power supply is made in AC and DC hybrid power supply.Its stator core external diameter 300mm, several 42 grooves of groove, the number of phases 16 utmost points, q=7/8, the feature that rolls off the production line such as figure one and table one, every circle 8 circles of thick line, every circle 4 circles of fine rule, wire gauge is 8- 1.2, a=2.When being used as Alternating Current Power Supply, be three-phase four-wire system, line voltage, phase voltage waveform sine are well, line voltage, phase voltage waveform aberration rate are all＜1%, mains ripple when being used as rectifier power source and being rectified into direct current is little, meets the requirement of the GJB GJB572 of People's Republic of China (PRC) aircraft energizer supplied character fully.
Table one A phase coil structural table
When using the triple-frequency harmonics auxiliary winding as excitation source, in double-deck stator slot, thereby whole generating machine stator winding layers number average is three layers under the humorous wave winding, and is identical with the general harmonic excited generator stator slot winding number of plies, technical maturity does not increase process complexity yet.Figure two is seen in the humorous wave winding position of rolling off the production line.
Claims (2)
1, the every extremely every phase groove of a kind of synchronous generator proper faction groove sinusoidal winding is counted q＜1, it is characterized in that: this synchronous generator proper faction groove sinusoidal winding is by two kinds of pitches, two kinds of numbers of turn at double than coil two, three layer of three phase winding of forming constitute, this winding is to connect around connecting down by non junction, the symmetric winding that the position is divided equally in groove contains two kinds of numbers of turn and becomes the coil of two multiple proportions to form.
2, synchronous generator proper faction groove sinusoidal winding according to claim 1 is characterized in that: the single-phase winding of composition or two phase windings or three phase windings, or polyphase windings, contain two kinds of numbers of turn and become the coil of two multiple proportions to form in every phase winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01251992 CN2497469Y (en) | 2001-09-25 | 2001-09-25 | Synchronized generator proper fraction slot sine winding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01251992 CN2497469Y (en) | 2001-09-25 | 2001-09-25 | Synchronized generator proper fraction slot sine winding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2497469Y true CN2497469Y (en) | 2002-06-26 |
Family
ID=33661798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01251992 Expired - Fee Related CN2497469Y (en) | 2001-09-25 | 2001-09-25 | Synchronized generator proper fraction slot sine winding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2497469Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100341232C (en) * | 2003-08-29 | 2007-10-03 | 泰豪科技股份有限公司 | Multiple machine integrated brushless motor variable frequency unit |
| CN104377927A (en) * | 2014-10-30 | 2015-02-25 | 湖南华一电机制造有限公司 | Three-speed three-phase asynchronous motor for tower crane and tower crane |
| CN110417153A (en) * | 2019-06-27 | 2019-11-05 | 上海电机系统节能工程技术研究中心有限公司 | A kind of proper faction groove motor bilayer unequal turns winding design method |
-
2001
- 2001-09-25 CN CN 01251992 patent/CN2497469Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100341232C (en) * | 2003-08-29 | 2007-10-03 | 泰豪科技股份有限公司 | Multiple machine integrated brushless motor variable frequency unit |
| CN104377927A (en) * | 2014-10-30 | 2015-02-25 | 湖南华一电机制造有限公司 | Three-speed three-phase asynchronous motor for tower crane and tower crane |
| CN110417153A (en) * | 2019-06-27 | 2019-11-05 | 上海电机系统节能工程技术研究中心有限公司 | A kind of proper faction groove motor bilayer unequal turns winding design method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |