CN2497475Y - Equi- distant synchronized generator proper fraction slot sine winding - Google Patents
Equi- distant synchronized generator proper fraction slot sine winding Download PDFInfo
- Publication number
- CN2497475Y CN2497475Y CN 01251993 CN01251993U CN2497475Y CN 2497475 Y CN2497475 Y CN 2497475Y CN 01251993 CN01251993 CN 01251993 CN 01251993 U CN01251993 U CN 01251993U CN 2497475 Y CN2497475 Y CN 2497475Y
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- Expired - Fee Related
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Abstract
The utility model discloses a true fractional-slot sine winding for an isometric synchronous generator. When the number q of slots of per pole per phase q of the winding is less than 1, the winding can form double-iteration winding by being winded for a plurality of times through winding symmetrical collocation of loops with different turn ratio and identical pitch; the utility model is simpler on craftsmanship than unequal-turn concentric type sine winding, 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 content of the harmonic wave is tiny, so the utility model is easy for making precision-typed and 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 causes 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 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 equidistant synchronous generator proper faction groove sinusoidal winding.
Background technology
General multipole synchronous generator factor receptor is long-pending to be limit, and every extremely every phase groove is counted q and usually got mark.And in intermediate frequency generator often q also may get proper fraction less than 1.Proper faction groove by general AC Windings principle be double-deck short distance formula structure or the double-deck low phase belt the harmonics of magnetic force winding that does not wait the circle concentric type all can't accomplish to make its line voltage and phase voltage irregularity of wave form all less than 2% level.
Summary of the invention
The purpose of this utility model is to provide a kind of equidistant synchronous generator proper faction groove sinusoidal winding, and the structure of this winding can overcome above-mentioned defective, and can make the irregularity of wave form of line voltage and phase voltage equal＜1%, reach leading domestic level.
The technical solution of the utility model is: a kind of equidistant synchronous generator proper faction groove sinusoidal winding, the every extremely every phase groove of this winding is counted q＜1, this winding turns is than winding symmetric arrangement different, the identical coil of pitch, winding can even form two repeatedly formula windings down around connecting, and constitutes three phase windings by two repeatedly windings of 2: 3 of two kinds of turn ratioes.Two repeatedly windings are for by equidistantly being made up of two kinds of the different numbers of turn or multiple coil.Connecting under company at non junction, is three-phase symmetric 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 double-deck positive chorded winding that does not wait circle concentric type structure; 2), be better than the defective that the three-decker winding is difficult to make non junction and connects winding under even though three phase windings by equidistant and does not wait circle to constitute, but still have been realized jointless company around connecting non junction winding down.Consistent with general two technologies that change, economical rationality.3) because q＜1, realized that simple in structure, technology makes things convenient for, little, the lightweight purpose of volume, because sinusoidal the layout, realized that again generator line voltage and phase voltage waveform are all highly sinusoidal, 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 three-phase winding coil turn ratio distribution of the utility model equidistant synchronous generator proper faction groove sinusoidal winding and arranges schematic diagram in groove;
Fig. 2 is the humorous wave winding of the utility model equidistant synchronous generator proper faction groove sinusoidal winding position view that rolls off the production line.
Embodiment
A kind of equidistant synchronous generator proper faction groove sinusoidal winding, this equidistant synchronous generator proper faction groove sinusoidal winding comprises: 30KW, a phase voltage 115V, 400Hz, three-phase four-wire system, 3000r/min intermediate frequency brushless generator, the usefulness of aircraft energizer is made in AC and DC hybrid power supply.Its stator core external diameter Φ 300mm, several 36 grooves of groove, number of poles 16 utmost points, q=3/4 rolls off the production line shown in figure one, and subscript 2 is every circle 2 circles, and subscript 3 is every circle 3 circles, and parallel branch is counted a=2.It is such that above-mentioned coil is formed, and every phase winding is made up of two kinds of coil turns, and the turn ratio is 2: 3, and its groove span is 1-4, constitutes jointless company around connecting time three-phase symmetric double winding that changes.Winding to this layout is equipped with skewed slot 3/4, the voltage harmonic content ratio of calculating is as follows: establishing first-harmonic is 1, then 3,5,7,11,13,15,17,19 ... inferior harmonic content is respectively 0,0.0033,0.0024,0.0010,0.0005,0,0.0035,0.0028 ..., line voltage and phase voltage line irregularity of wave form are less than 0.7%.Above-mentioned parallel branch is counted a and be can be 1 or 2.When being used as the midfrequent AC power supply, be three-phase four-wire system, line voltage, phase voltage waveform aberration rate all＜1%, the 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 power supply source supplied character fully.
Claims (3)
1, a kind of equidistant synchronous generator proper faction groove sinusoidal winding, the every extremely every phase groove of this winding is counted q＜1, it is characterized in that: this winding turns is than winding symmetric arrangement different, the identical coil of pitch, winding can even form two repeatedly formula windings down around connecting, and constitutes three phase windings by two repeatedly windings of 2: 3 of two kinds of turn ratioes.
2, equidistant synchronous generator proper faction groove sinusoidal winding according to claim 1 is characterized in that: two repeatedly windings are for by equidistantly being made up of two kinds of the different numbers of turn or multiple coil.
3, equidistant synchronous generator proper faction groove sinusoidal winding according to claim 1 is characterized in that: non junction connects around connecting down, is three-phase symmetric winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01251993 CN2497475Y (en) | 2001-09-25 | 2001-09-25 | Equi- distant synchronized generator proper fraction slot sine winding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01251993 CN2497475Y (en) | 2001-09-25 | 2001-09-25 | Equi- distant synchronized generator proper fraction slot sine winding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2497475Y true CN2497475Y (en) | 2002-06-26 |
Family
ID=33661799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01251993 Expired - Fee Related CN2497475Y (en) | 2001-09-25 | 2001-09-25 | Equi- distant synchronized generator proper fraction slot sine winding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2497475Y (en) |
-
2001
- 2001-09-25 CN CN 01251993 patent/CN2497475Y/en not_active Expired - Fee Related
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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 |