CN100341232C - Multiple machine integrated brushless motor variable frequency unit - Google Patents
Multiple machine integrated brushless motor variable frequency unit Download PDFInfo
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- CN100341232C CN100341232C CNB03125361XA CN03125361A CN100341232C CN 100341232 C CN100341232 C CN 100341232C CN B03125361X A CNB03125361X A CN B03125361XA CN 03125361 A CN03125361 A CN 03125361A CN 100341232 C CN100341232 C CN 100341232C
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Abstract
The present invention discloses a multi-machine integral type brushless electric frequency converter set which is formed by assembling a power frequency motor, a plurality of medium frequency generators and an exciter in a coaxial mode. The present invention realizes a brushless mode, the power frequency motor and the medium frequency generators are jointly arranged in a base, and the excitation of the medium frequency generators is supplied by a coaxial multipole compound exciter. The present invention has the advantages that a plurality of frequency converters are combined into the multi-machine integral type brushless frequency converter set, and the present invention realizes the targets of brushless mode, self start, excitation start, high electric quality, small volume, light weight and high reliability. The medium frequency part of the set of the present invention adopts proper fraction slot number windings, and the waveform distortion rates of the transmitted voltage and the transmitted phase voltage of a medium frequency wire are smaller than 2%. The power frequency motor and the medium frequency generators are jointly arranged in the base, and the present invention only has one set which occupies a small space. Thus, the set has the advantages of small set volume, light weight, high set efficiency, hard frequency property and good electric property, and can be used as a medium frequency power supply with high electric quality to use.
Description
Technical field
The present invention relates to a kind of rotary power source equipment, particularly relate to a kind of multimachine integral type brushless electric frequency conversion unit.
Background technology
As everyone knows, general electric frequency conversion generator is by power frequency motor and one intermediate frequency generator independently independently, arrange power frequency, two kinds of iron cores of intermediate frequency by shaft coupling or coaxial-type ground, if will make the brushless coaxial arrangement AC exciter of also wanting, the frequency convertor axial length is long like this, volume is big, Heavy Weight, poor reliability, efficient are poor, and its electric property still lacks perfection, and for example: the line voltage of its intermediate frequency generator and phase voltage waveform aberration rate are difficult to reach simultaneously all the level less than 2%.And if require the generator of multiple different frequency, then need many this units, thus, unit quantity is many, and it is big that equipment is installed shared locus, reliability and efficient inequality.
Summary of the invention
The objective of the invention is to is at above-mentioned drawback, provide a kind of high-quality, volume is little, in light weight, multimachine integral type brushless electric frequency conversion unit that reliability is high.This unit is merged into many electric frequency conversion units the version of a frequency conversion unit, this unit axial length is short, and self-starting, excitation operate steadily, the excellent electrical properties of intermediate frequency generator, the line of its intermediate frequency generator, phase voltage waveform aberration rate are all less than 2%.
Technical scheme of the present invention is: a kind of multimachine integral type brushless electric frequency conversion unit, comprise this unit a power frequency 50Hz motor and coaxial-type are equipped with a multipole compound AC exciter, the a plurality of intermediate frequency generators that also are provided with in the unit more than two or two are co-located in the support, power frequency motor adopts squirrel-cage asynchronous motor, intermediate frequency generator stator main winding is pressed the proper faction groove sinusoidal design of Windings, and multipole compound AC exciter is used for intermediate frequency generator rotor magnetic pole winding excitation.The power frequency motor stator winding adopts concentric type biend list two layer winding.The intermediate frequency generator stator winding can by circles such as two repeatedly formulas not isometric form constitute.This unit can constitute the 50Hz input, exports the electric frequency conversion generating set of the intermediate frequency power supply of multichannel same frequency or different frequency after the frequency conversion simultaneously, and does not disturb mutually between the intermediate frequency power supply of the multichannel same frequency of output or different frequency.The exciter winding is multipole compound winding, by p, 2p, 4p...... the utmost point is designed to the non-interfering multipole combined winding of many covers, uses for the intermediate frequency generator rotor magnetic pole winding excitation of a plurality of different frequencies respectively.The frequency of a plurality of intermediate frequency generators more than two or two can be that different frequency also can be same frequency.
Multimachine integral type brushless electric frequency conversion unit mainly is made up of support, front and rear cover and rotor.The support coaxial-type is furnished with a power frequency motor stator and two or two above intermediate frequency generator stators.On rear end cap, be furnished with a multipole compound AC excitation machine stator with the support coaxial-type.On rotor, correspondingly arranged the pairing rotor core of above stator, centrifugal fan and bearing also have been housed simultaneously.The frequency conversion unit is a nature air swept type.Arranged two covers or the above winding of two covers on the above-mentioned AC exciter iron core, be respectively p, 2p, 4p...... utmost point winding.Two covers of this AC exciter or the above armature rotor winding of two covers by two covers or more than two covers independently rotating rectifier provide direct current to two or two above intermediate frequency generator rotor windings respectively, for excitation.Power frequency motor and a plurality of intermediate frequency generator and exciter are one, make whole unit operation stable, high efficiency.
The invention has the advantages that: power frequency motor and a plurality of intermediate frequency generator are co-located in the support, have reduced the quantity of unit, take up space thereby reduced unit installation institute.Multipole compound rectifier excitation machine and the coaxial installation of unit have been realized the non-brushing structure; And exciter stator and rotor iron core is one, and is independent of a plurality of intermediate frequency generator main pole winding power supplies, shortened the axial length of unit greatly.The power frequency stator winding adopts special concentric type biend list two layer winding technology, has shortened winding overhang length greatly, thereby has shortened the unit axial overall length.The intermediate frequency stator winding is the not equidistant positive chorded windings of circle such as proper faction groove two-layer equation, and humorous wave winding orthogonal design, makes that technology is simple, excellent electrical properties, and the startup ability is big, and the voltage waveform sine is good, and line, phase voltage waveform aberration rate are all less than 2%.Whole frequency conversion unit compact conformation, volume is little, in light weight, reliability is high, efficient is high, power factor is high, frequency characteristic is hard, excellent electrical properties.
Description of drawings
Fig. 1 is a multimachine integral type brushless electric frequency conversion unit structural representation of the present invention.
Embodiment
The stator winding of main frame all is special design, power frequency motor 5 stator winding are single layer and Double-layer Concentric Winding of the end low phase belt the harmonics of magnetic force, short (adopting both ends of the surface rule mode), to guarantee that generator loss is little, efficient is high, power factor is high, the slip characteristic is hard.Intermediate frequency generator 3 stator winding are pressed the not equidistant sinusoidal design of Windings of proper faction groove two-layer equation, guarantee the intermediate-frequency section excellent electrical properties, and its line, phase voltage waveform aberration rate are all less than 2%.In addition, in the intermediate frequency stator also quadrature arrangement the medium-frequency harmonic winding as excitation source for multipole compound AC exciter 6 excitations, it can and have very strong dynamic capability from excitation.
Unit mainly is made up of forward and backward end cap 1,9, support 4, forward and backward bearing 2,8, rotating shaft 7, power frequency motor 5, intermediate frequency generator 3 and multipole compound AC exciter 6.Be furnished with a power frequency motor 5 and a plurality of intermediate frequency generator 3 in the support 4, power frequency motor 5 is the squirrel-cage threephase asynchronous, and stator winding is the single layer and Double-layer Concentric Winding of both ends of the surface; A plurality of intermediate frequency generator 3 stator winding are the not equidistant positive chorded windings of circle such as proper faction groove two-layer equation, and the exciter rotor armature winding in its rotor magnetic pole winding and the rear end cap 9 connects by rotating rectifier.Also be furnished with a multipole compound AC exciter 6 in the rear end cap 9, it is non-interfering multipole combined winding that this multipole compound AC exciter 6 is embedded with many cover windings, is respectively 5,10,20...... is to utmost point winding.
Punching size and groove number: power frequency motor stator punching cylindrical φ 445, interior round φ 255, the groove number is 42 grooves, rotor punching groove number is 34 grooves; Intermediate frequency generator stator punching cylindrical φ 445, interior round φ 350, the groove number is 72 grooves, rotor punching groove number is 16 grooves; AC exciter stator punching cylindrical φ 420, interior round φ 290, number of stator slots is 20 grooves, the rotor number is 30 grooves.
The nameplate data are as follows:
The output of power frequency input intermediate frequency
Rated power (kW) 50 20+20
Rated voltage (V) 380 200/200
Rated current (A) 86 72.2/72.2
The number of phases 33
Connection Y/ Δ Y
Rated frequency (Hz) 50 400
Rated speed (r/min) 3,000 3000 (synchronous speed)
Power factor (cos φ) 0.88 (hysteresis) 0.8 (hysteresis)
Unit test is surveyed to such an extent that intermediate frequency line voltage-form distortion rate is 1.5%, and the phase voltage waveform aberration rate is 1.7%, starts, excitation is smooth, operates steadily.
This machine is used as in the warship face power station, makes the electric frequency conversion unit and uses, and high-quality 400Hz is provided three symmetrical intermediate frequency power supplies, and two electric frequency conversion units are united two into one, and has reduced equipment installation institute and has taken up space, and volume is little, in light weight, performance is good, reliability is high.
Claims (2)
1, a kind of multimachine integral type brushless electric frequency conversion unit, this unit has a power frequency 50Hz motor (5) and coaxial-type that a multipole compound AC exciter (6) is housed, it is characterized in that: a plurality of intermediate frequency generators (3) that also are provided with in the unit more than two or two are co-located in the support (4), power frequency motor (5) stator winding is a concentric type biend list two layer winding, its winding overhang length is short, intermediate frequency generator (3) stator main winding is the not equidistant proper faction groove sinusoidal windings of circle such as two repeatedly formulas, multipole compound AC exciter (6) winding is multipole compound winding, press p, 2p, 4p...... the utmost point is designed to the non-interfering multipole combined winding of many covers, uses for a plurality of intermediate frequency generator rotor magnetic pole winding excitations respectively.
2, multimachine integral type brushless electric frequency conversion unit according to claim 1, it is characterized in that: can constitute the input of 50Hz power supply, can export the electric frequency conversion generating set of the intermediate frequency power supply of multichannel same frequency or different frequency after the frequency conversion simultaneously, not disturb mutually between the multichannel same frequency of output or different frequency intermediate frequency power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB03125361XA CN100341232C (en) | 2003-08-29 | 2003-08-29 | Multiple machine integrated brushless motor variable frequency unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB03125361XA CN100341232C (en) | 2003-08-29 | 2003-08-29 | Multiple machine integrated brushless motor variable frequency unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1492565A CN1492565A (en) | 2004-04-28 |
| CN100341232C true CN100341232C (en) | 2007-10-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB03125361XA Expired - Lifetime CN100341232C (en) | 2003-08-29 | 2003-08-29 | Multiple machine integrated brushless motor variable frequency unit |
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| Country | Link |
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| CN (1) | CN100341232C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009089662A1 (en) * | 2008-01-14 | 2009-07-23 | Guangshun Wang | Adaptive frequency-coincidence generator |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102324817A (en) * | 2011-09-21 | 2012-01-18 | 赵文钦 | Electric variable frequency brushless synchronous generating set |
| CN104638860B (en) * | 2013-11-11 | 2018-05-25 | 黄劭刚 | Harmonic wave self-excitation combined magnetic pole AC exciter |
| CN105490490A (en) * | 2015-12-18 | 2016-04-13 | 南昌康富科技股份有限公司 | Common-armature and different-pole alternating current exciter |
| CN110545026A (en) * | 2019-09-20 | 2019-12-06 | 哈尔滨工业大学 | stator excitation flywheel pulse induction generator system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2497469Y (en) * | 2001-09-25 | 2002-06-26 | 清华泰豪科技股份有限公司 | Synchronized generator proper fraction slot sine winding |
| CN2501248Y (en) * | 2001-09-25 | 2002-07-17 | 清华泰豪科技股份有限公司 | Brushless motor frequency changer |
| CN2528153Y (en) * | 2002-02-28 | 2002-12-25 | 清华泰豪科技股份有限公司 | Double-frequency, frequency convertion brushless synchronous generator |
| CN2652037Y (en) * | 2003-08-29 | 2004-10-27 | 泰豪科技股份有限公司 | Multi-unit unitary brushless motor frequency converter set |
-
2003
- 2003-08-29 CN CNB03125361XA patent/CN100341232C/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2497469Y (en) * | 2001-09-25 | 2002-06-26 | 清华泰豪科技股份有限公司 | Synchronized generator proper fraction slot sine winding |
| CN2501248Y (en) * | 2001-09-25 | 2002-07-17 | 清华泰豪科技股份有限公司 | Brushless motor frequency changer |
| CN2528153Y (en) * | 2002-02-28 | 2002-12-25 | 清华泰豪科技股份有限公司 | Double-frequency, frequency convertion brushless synchronous generator |
| CN2652037Y (en) * | 2003-08-29 | 2004-10-27 | 泰豪科技股份有限公司 | Multi-unit unitary brushless motor frequency converter set |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009089662A1 (en) * | 2008-01-14 | 2009-07-23 | Guangshun Wang | Adaptive frequency-coincidence generator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1492565A (en) | 2004-04-28 |
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Granted publication date: 20071003 |