CN2652037Y - Multi-unit unitary brushless motor frequency converter set - Google Patents
Multi-unit unitary brushless motor frequency converter set Download PDFInfo
- Publication number
- CN2652037Y CN2652037Y CN 03237258 CN03237258U CN2652037Y CN 2652037 Y CN2652037 Y CN 2652037Y CN 03237258 CN03237258 CN 03237258 CN 03237258 U CN03237258 U CN 03237258U CN 2652037 Y CN2652037 Y CN 2652037Y
- Authority
- CN
- China
- Prior art keywords
- frequency
- winding
- intermediate frequency
- power
- multimachine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Synchronous Machinery (AREA)
Abstract
The utility model discloses a multi-machine integrated brushless electric frequency-changer set, which comprises a power frequency motor, a plurality of intermediate-frequency generators and an exciting dynamo assembled together coaxially to realize brushless operation. The power frequency motor and a plurality of intermediate-frequency generators are arranged in a same pedestal. Excitation of the intermediate-frequency generator is provided by a coaxial multi-polar composite exciting dynamo. The utility model has the advantages of integrating a plurality of frequency-changer sets into a multi-machine integrated brushless frequency-changer set, thus achieving purposes of brushless operation, automatic start, excitation, high electrical quality, small size, light weight and high reliability. Intermediate frequency part of the frequency-changer set adopts proper fractional slot winding to ensure waveform distortion factor of intermediate frequency linear voltage and phase voltage less than 2 per cent. The power frequency motor and a plurality of intermediate-frequency generators are arranged in the same pedestal, thus only providing a frequency-changer set, occupying smaller space and ensuring small set size, light weight, high efficiency, hard frequency characteristic and excellent electric performance as an intermediate-frequency power source with high electrical quality.
Description
Technical field
The utility model relates to a kind of rotary power source equipment, particularly relates 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.
The utility model content
So the purpose of this utility model 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%.
The technical solution of the utility model 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 intermediate frequency generator that also is provided with in the unit more than two or two is 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 multiple different frequency after the frequency conversion simultaneously.The exciter winding is multipole compound winding, presses 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 the intermediate frequency generator 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 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 cover windings on the above-mentioned AC exciter iron core, be respectively p and 2p utmost point winding.Two cover armature rotor windings of this AC exciter overlap independently by two that rotating rectifier provides direct current to two intermediate frequency generator rotor windings respectively, for excitation.Power frequency motor and two intermediate frequency generators and exciter are one, make whole unit operation stable, high efficiency.
Advantage of the present utility model is: 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, to the power supply of intermediate frequency generator main pole winding, has 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 the utility model multimachine integral type brushless electric frequency conversion unit structural representation.
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 two intermediate frequency generators 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; Two 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 two cover windings, and a cover is 20 pairs of utmost point windings, and another set of is 10 pairs of utmost point windings.
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 (6)
1, a kind of multimachine integral type brushless electric frequency conversion unit, this unit comprises that a power frequency 50Hz motor (5) and coaxial-type are equipped with a multipole compound AC exciter (6), it is characterized in that: the intermediate frequency generator (3) that also is provided with in the unit more than two or two is co-located in the support (4), power frequency motor (5) adopts squirrel-cage asynchronous motor, intermediate frequency generator (3) stator main winding is pressed the proper faction groove sinusoidal design of Windings, and multipole compound AC exciter (6) is used for intermediate frequency generator rotor magnetic pole winding excitation.
2, multimachine integral type brushless electric frequency conversion unit according to claim 1 is characterized in that: power frequency motor (5) stator winding adopts concentric type biend list two layer winding.
3, multimachine integral type brushless electric frequency conversion unit according to claim 1 is characterized in that: intermediate frequency generator (3) stator winding can by circles such as two repeatedly formulas not isometric form constitute.
4, multimachine integral type brushless electric frequency conversion unit according to claim 1 is characterized in that: this unit can constitute the 50Hz input, exports the electric frequency conversion generating set of the intermediate frequency power supply of multiple different frequency after the frequency conversion simultaneously.
5, multimachine integral type brushless electric frequency conversion unit according to claim 1, it is characterized in that: exciter (6) winding is multipole compound winding, by p, 2p, 4p...... the utmost point is designed to the non-interfering multipole combined winding of many covers, supplies intermediate frequency generator (3) the rotor magnetic pole winding excitation of a plurality of different frequencies to use respectively.
6, multimachine integral type brushless electric frequency conversion unit according to claim 1 is characterized in that: the frequency of the intermediate frequency generator more than two or two (3) can be that different frequency also can be same frequency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03237258 CN2652037Y (en) | 2003-08-29 | 2003-08-29 | Multi-unit unitary brushless motor frequency converter set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03237258 CN2652037Y (en) | 2003-08-29 | 2003-08-29 | Multi-unit unitary brushless motor frequency converter set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2652037Y true CN2652037Y (en) | 2004-10-27 |
Family
ID=34326421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03237258 Expired - Fee Related CN2652037Y (en) | 2003-08-29 | 2003-08-29 | Multi-unit unitary brushless motor frequency converter set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2652037Y (en) |
Cited By (2)
| 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 |
| CN106451914A (en) * | 2016-11-11 | 2017-02-22 | 华中科技大学 | Multi-frequency integrated synchronous reluctance motor |
-
2003
- 2003-08-29 CN CN 03237258 patent/CN2652037Y/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 |
| CN106451914A (en) * | 2016-11-11 | 2017-02-22 | 华中科技大学 | Multi-frequency integrated synchronous reluctance motor |
| CN106451914B (en) * | 2016-11-11 | 2018-09-21 | 华中科技大学 | A kind of Integral synchronous reluctance motor of multi-frequency |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Boldea et al. | High power wind generator designs with less or no PMs: An overview | |
| EP2320542A3 (en) | Brushless high-frequency alternator and excitation method for DC, single-phase and multi-phase AC power-frequency generation | |
| WO2014117350A1 (en) | Electrical machines | |
| Ullah et al. | A novel dual rotor permanent magnet flux switching generator for counter rotating wind turbine applications | |
| Fu et al. | A unified theory of flux-modulated electric machines | |
| US20050099083A1 (en) | Simplified hybrid-secondary uncluttered machine and method | |
| CN100341232C (en) | Multiple machine integrated brushless motor variable frequency unit | |
| CN2652037Y (en) | Multi-unit unitary brushless motor frequency converter set | |
| CN100468923C (en) | A.C./D.C permanent-magnet synchronous generator | |
| Beik et al. | High voltage generator for wind turbines | |
| CN2501248Y (en) | Brushless motor frequency changer | |
| CN100405709C (en) | Coarmature type AC-DC brushless electric generator | |
| CN1588759A (en) | Double three phase permanent magnet synchronous motor | |
| CN1317810C (en) | Frequency conversion electrical motor | |
| US20080067883A1 (en) | Generator and/or motor assembly | |
| CN201252431Y (en) | Magneto-modulated brushless internal-feedback motor | |
| CN200994097Y (en) | High power two-armature double-feeding brushless wind generator | |
| CN205847028U (en) | The extremely low electric motor with speed of difference | |
| CN216904634U (en) | Double-drive alternating current-direct current generator | |
| CN2629330Y (en) | Cocentral double-frequency change frequency brushless power generator | |
| CN1547313A (en) | Mictomagnetism dual voltage medium frequency brushless synchronous generator | |
| CN2550955Y (en) | New air gap structure generator | |
| CN100347936C (en) | Double frequency variable brushless power generator with same armature | |
| CN2416658Y (en) | Single & three phase universal precision brushless synchro generator | |
| CN215419801U (en) | Synchronous motor |
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 |