CN2442441Y - Multiple winding generator - Google Patents
Multiple winding generator Download PDFInfo
- Publication number
- CN2442441Y CN2442441Y CN 00244528 CN00244528U CN2442441Y CN 2442441 Y CN2442441 Y CN 2442441Y CN 00244528 CN00244528 CN 00244528 CN 00244528 U CN00244528 U CN 00244528U CN 2442441 Y CN2442441 Y CN 2442441Y
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- winding
- phase
- utility
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- stator winding
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Abstract
The utility model provides a multiple winding generator, which comprises a housing, a three-phase stator winding, and a rotor, wherein, the three-phase stator winding is arranged in the housing. The utility model is characterized in that the stator winding is composed of two three-phase windings which are mutually staggered with an electrical angle. The utility model can be used as a polyphase alternating current, the utility model can be connected with a bridge rectifier, and a multiple pulse wave power rectifier can be formed; the multiple pulse wave power rectifier has the advantages of small ripple coefficient, high power factors, simple structure, and low cost. The utility model is especially suitable for occasions which need high-voltage rectifiers.
Description
The utility model relates to the generator in the electric supply field.What be particularly related to is a kind of generator that is used to provide rectifier power source.
Generator is as power source extensive use in all trades and professions.At some as the railway locomotive electrical source of power, occasions such as ship power power supply, often require direct current, obtain galvanic mode at present and mostly be three phase windings at alternating current generator and connect rectifier, the anti-device of direct current and big capacity filter capacitor and constitute three-phase six pulse wave rectifier power supplys.The shortcoming of the three-phase six pulse wave rectifier power supplys that constitute by this mode be bulky, cost is high, power factor is low, the dc ripple coefficient is big, system effectiveness is low.
The purpose of this utility model is the above-mentioned shortcoming that overcomes prior art, and a kind of multi-winding generator is provided, and this multi-winding generator can be simplified its rectifying part when being used to form the pulse wave rectifier power supply, and the dc ripple coefficient of pulse wave rectifier power supply is little.
Realize the multi-winding generator of the utility model purpose, comprise housing, be installed in threephase stator winding and rotor in the housing that described stator winding is made of at least two three phase windings of establishing with the electrical degree row that staggers mutually.When forming direct current pulse wave rectifier power supply, each three phase winding is connected on each ac input end of series bridge rectifier respectively, can obtain a multi-pulse rectification power supply.According to electrical principles, the number of phases of the electric current of input rectifier is many more, and the wave head number of commutating voltage is just many more.This commutating voltage can be decomposed into direct voltage Ud and ripple voltage Δ V, and ripple voltage is by humorous wave component.According to harmonic wave formula h=n * p ± 1 as can be known, count p more for a long time when wave head, harmonic number h is just few more, so its ripple voltage Δ V is just more little, thus the dc ripple coefficient
Also more little.Only just constituting stator winding with two three phase windings is example, and its dc ripple coefficient is (in the national regulation index below 0.04) only 0.036.The number of three phase windings can depend on the needs, and needing only mistake between each three phase winding has an electrical degree.
Electrical degree value between each three phase winding can be identical, also can be inequality.For making its electric property better, the electrical degree between each three phase winding can be made as 360 ° of five equilibriums.That is to say that the electrical degree between described each three phase winding can be made as 360 °/6 * N, wherein, N is the number of three phase windings.
The utility model constitutes stator winding by a plurality of three phase windings of arranging with different electrical degrees, except that can sending the many phase alternating current use, itself and series bridge rectifier joined to form the multi-pulse rectification power supply, the multi-pulse rectification power supply of being made up of this multi-winding generator is except that having the advantage that the dc ripple coefficient is little, power factor (PF) is high, still can omit direct current reactor, reduce the filter capacitor capacity, reduce the cost cost.In addition,, therefore can reduce the generator stator insulator grade, reduce its cost because each winding serial connection rectifier makes the output voltage step-down on each winding; In other words, under equal class of insulation prerequisite, the withstand voltage properties of this multi-winding generator can increase substantially, thereby this generator need to be specially adapted to the occasion of high voltage rectifier.
Below in conjunction with drawings and Examples the utility model is described in further details.But content of the present utility model is not limited in this embodiment.
Fig. 1 structural representation of the present utility model
Fig. 2 stator is the voltage-phase figure of one three phase winding
Fig. 3 stator is the commutating voltage oscillogram of one three phase winding
Fig. 4 stator is the voltage-phase figure of two three phase windings
Fig. 5 stator is the commutating voltage oscillogram of two three phase windings
See Fig. 1, continue to use prior art rotor 3 and stator winding are installed in the housing 1 that stator winding can be by a plurality of three phase winding A
1B
1C
1A
NB
NC
NConstitute, between each three phase winding with stagger mutually an electrical degree α, β ... θ row establishes.Wherein, current potential angle α, β, θ can be identical, also can be inequality.Each ABC three-phase can " Y " type or " Δ " connection.For sake of convenience, illustrate with the stator winding that constitutes by two three phase windings below.Fig. 4 and Fig. 5 have provided its voltage-phase figure and commutating voltage oscillogram respectively.Be convenient relatively directly perceived, Fig. 2 and Fig. 3 have provided the voltage-phase figure and the commutating voltage oscillogram of original stator winding of being served as by one three phase winding respectively.That the stator winding that is made of two three phase windings obtains after connecing bridge rectifier is 12 pulsating wave rectifier power source Ud, its ripple voltage Δ V
2Only be 0.036Ud.And the original stator winding that is made of one three phase winding obtains is six pulse wave rectifier power supplys, ripple voltage Δ V
1Be 0.14Ud.As seen, this multi-winding generator can obtain ripple coefficient when being used for rectification
Very little multi-pulse rectification power supply.
For making its electric property better, the electrical degree between each three phase winding is advisable for 360 ° to be made as five equilibrium.That is to say that the electrical degree between described each three phase winding is made as 360 °/6 * N.Wherein, N is the number of three phase windings, in previous example, and N=2, the electrical degree between each phase winding is 360 °/6 * 2=30 °.
Claims (2)
1. a multi-winding generator comprises housing, is arranged on threephase stator winding and rotor in the housing, it is characterized in that described stator winding is made of at least two three phase windings of establishing with the electrical degree row that staggers mutually.
2. multi-winding generator as claimed in claim 1 is characterized in that the electrical degree between described each three phase winding is 360 °/6 * N, and wherein N is the number of three phase windings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00244528 CN2442441Y (en) | 2000-09-26 | 2000-09-26 | Multiple winding generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00244528 CN2442441Y (en) | 2000-09-26 | 2000-09-26 | Multiple winding generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2442441Y true CN2442441Y (en) | 2001-08-08 |
Family
ID=33604190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00244528 Expired - Fee Related CN2442441Y (en) | 2000-09-26 | 2000-09-26 | Multiple winding generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2442441Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107947418A (en) * | 2017-11-28 | 2018-04-20 | 贵州航天林泉电机有限公司 | A kind of double speed multi-winding generator |
-
2000
- 2000-09-26 CN CN 00244528 patent/CN2442441Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107947418A (en) * | 2017-11-28 | 2018-04-20 | 贵州航天林泉电机有限公司 | A kind of double speed multi-winding generator |
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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 |