CN201674371U - Three-phase brushless synchronous generator with compound excitation - Google Patents
Three-phase brushless synchronous generator with compound excitation Download PDFInfo
- Publication number
- CN201674371U CN201674371U CN2010202184702U CN201020218470U CN201674371U CN 201674371 U CN201674371 U CN 201674371U CN 2010202184702 U CN2010202184702 U CN 2010202184702U CN 201020218470 U CN201020218470 U CN 201020218470U CN 201674371 U CN201674371 U CN 201674371U
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- exciter
- iron core
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Abstract
The utility model relates to a three-phase brushless synchronous generator with compound excitation, which comprises a stator assembly and a rotor assembly, wherein the rotor assembly consists of generator excitation iron cores which are arranged on a same rotor shaft in parallel, generator excitation windings thereon, an exciter iron core and an exciter winding thereon; the stator assembly consists of a generator iron core, a generator main winding thereon, an exciter excitation iron core and an exciter voltage excitation winding thereon; and a three-phase current transformer with star connection is arranged on a three-phase output line of the generator main winding, a current compound excitation winding for exciting the exciter winding is arranged on the stator assembly, and the output end of the three-phase current transformer and the current compound excitation winding constitute a closed loop via a three-phase bridge type rectifier circuit. The three-phase brushless synchronous generator with the compound excitation can greatly improve the capability of starting an asynchronous motor of the generator, solve the difficult problem that the instant change of output voltage of the generator is overlarge when the rated load is loaded or unloaded suddenly and improve the transient state performance index of the output voltage of the generator.
Description
Technical field
The utility model relates to three-phase synchronous generator, especially the three-phase main-frequency no-brush synchronous generator.
Background technology
Existing three-phase brushless synchronous generator mainly contains field frame assembly and rotor assembly two large divisions.Described rotor assembly is by being set up in parallel at generator excitation iron core on the same armature spindle and exciter iron core and being arranged on the generator excitation winding on the described generator excitation iron core and the exciter winding that is arranged on the described exciter iron core constitutes; Described field frame assembly by the generator iron core and on the generator main winding and the exciter excitation iron core and on the exciter voltage excitation winding constitute; The output of described exciter winding constitutes the closed-loop path through being arranged on the three-phase bridge rectifier circuit on the rotor assembly with described generator excitation winding; Described exciter voltage excitation winding constitutes the closed-loop path with the voltage regulator that is arranged on the housing.When power source drives the rotor assembly rotation, exciter voltage excitation winding on the field frame assembly is the exciter winding excitation on the rotor assembly, the output of exciter winding is through being arranged on the rectifying tube three-phase bridge rectification on the rotor assembly, for the generator excitation winding on the rotor assembly provides exciting current, generator excitation winding generation magnetic field is the generator main winding excitation on the field frame assembly, the generator main winding produces output voltage, powers to the load by the three-phase output line.This three-phase brushless synchronous generator, because the exciting voltage of the exciter voltage excitation winding on the said stator assembly is controlled by voltage regulator, when this three-phase brushless synchronous generator starts asynchronous motor, or impact, prominent when unloading the heavy load electric equipment, because the hysteresis quality of regulating, voltage regulator can not or reduce the exciting current of exciter voltage excitation winding according to the corresponding instantaneous increase of the instantaneous abrupt change of load, cause the output voltage transient change of this three-phase brushless synchronous generator too big, mapping is relatively poor.
The utility model content
The purpose of this utility model is: a kind of three-phase brushless synchronous generator with compound excitation is provided, can effectively improves the ability that starts asynchronous motor and impact, prominent ability of unloading heavy load, improve the mapping index of output voltage.
For achieving the above object, the utility model can be taked following technical proposals:
The three-phase brushless synchronous generator of the utility model band compound excitation, comprise field frame assembly and rotor assembly, described rotor assembly by be set up in parallel the generator excitation iron core on the same armature spindle and on the generator excitation winding and the exciter iron core and on the exciter winding constitute, described field frame assembly by the generator iron core and on the generator main winding and the exciter excitation iron core and on the exciter voltage excitation winding constitute; Three-phase bridge rectifier circuit and the described generator excitation winding of the output of described exciter winding through being arranged on the rotor assembly constitutes the closed-loop path; Described exciter voltage excitation winding constitutes the closed-loop path with the voltage regulator that is arranged on the housing; It is characterized in that: the threephase current transformer that on the three-phase output line of generator main winding, is provided with Y-connection, be provided with the electric current compound winding into described exciter winding excitation on field frame assembly, the output of described threephase current transformer constitutes the closed-loop path through three-phase bridge rectifier circuit and described electric current compound winding.
Described electric current compound winding relative set is on described exciter excitation iron core.
The technical solution of the utility model, owing to set up and be the electric current compound winding of described exciter winding excitation, and the exciting current of this electric current compound winding is to be obtained by the transient change induction of threephase current transformer because of load current, what load current was instantaneous uprushes or bust, the electric current compound winding also can instantaneous corresponding enhancing to the excitation intensity of exciter winding or is weakened, the ability and the impact of generator startup asynchronous motor have been improved greatly, prominent ability of unloading heavy load, improved the mapping of generator output voltage, solved generator at the nominal load impact, too big this difficult problem of output voltage transient change during prominent unloading has improved the mapping index of generator output voltage.
Description of drawings
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
As described in Figure 1, the three-phase brushless synchronous generator of the utility model band compound excitation, comprise field frame assembly 1 and rotor assembly 2, described rotor assembly 2 by be set up in parallel the generator excitation iron core on the same armature spindle and on generator excitation winding 32 and the exciter iron core and on exciter winding 41 constitute, described field frame assembly by the generator iron core and on generator main winding 31 and the exciter excitation iron core and on exciter excitation constitute around 42 groups; Three-phase bridge rectifier circuit and the described generator excitation winding 32 of the output of described exciter winding 41 through being arranged on the rotor assembly constitutes the closed-loop path; Described exciter voltage excitation winding 42 constitutes the closed-loop path with the voltage regulator 5 that is arranged on the housing; On the three-phase output line u of generator main winding 31, v, w, be provided with the threephase current transformer 6 of Y-connection, on field frame assembly 1, be provided with electric current compound winding 43 into described exciter winding 41 excitations, the output of described threephase current transformer 6 constitutes closed-loop paths through three-phase bridge rectifier circuit and described electric current compound winding 43, at these electric current compound winding 43 two ends and be connected to a resistance controller.Described electric current compound winding 43 relative set are saved space and cost on described exciter excitation iron core.
Claims (2)
1. three-phase brushless synchronous generator with compound excitation, comprise field frame assembly (1) and rotor assembly (2), described rotor assembly (2) by be set up in parallel the generator excitation iron core on the same armature spindle and on generator excitation winding (32) and the exciter iron core and on exciter winding (41) constitute, described field frame assembly (1) by the generator iron core and on generator main winding (31) and the exciter excitation iron core and on exciter voltage excitation winding (42) constitute; Three-phase bridge rectifier circuit and the described generator excitation winding (32) of the output of described exciter winding (41) through being arranged on the rotor assembly constitutes the closed-loop path; Described exciter voltage excitation winding (42) constitutes the closed-loop path with the voltage regulator (5) that is arranged on the housing; It is characterized in that: the threephase current transformer (6) that on the three-phase output line (u, v, w) of described generator main winding (31), is provided with Y-connection, be provided with the electric current compound winding (43) into described exciter winding (41) excitation on field frame assembly (1), the output of described threephase current transformer (6) constitutes the closed-loop path through three-phase bridge rectifier circuit and described electric current compound winding (43).
2. the three-phase brushless synchronous generator of band compound excitation according to claim 1 is characterized in that: described electric current compound winding (43) relative set is on described exciter excitation iron core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202184702U CN201674371U (en) | 2010-06-08 | 2010-06-08 | Three-phase brushless synchronous generator with compound excitation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202184702U CN201674371U (en) | 2010-06-08 | 2010-06-08 | Three-phase brushless synchronous generator with compound excitation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201674371U true CN201674371U (en) | 2010-12-15 |
Family
ID=43331778
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202184702U Expired - Lifetime CN201674371U (en) | 2010-06-08 | 2010-06-08 | Three-phase brushless synchronous generator with compound excitation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201674371U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101834502A (en) * | 2010-06-08 | 2010-09-15 | 郑州金阳电气有限公司 | Three-phase brushless synchronous generator with compound excitation |
-
2010
- 2010-06-08 CN CN2010202184702U patent/CN201674371U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101834502A (en) * | 2010-06-08 | 2010-09-15 | 郑州金阳电气有限公司 | Three-phase brushless synchronous generator with compound excitation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20101215 Effective date of abandoning: 20120502 |