CN202550957U - Excitation device - Google Patents
Excitation device Download PDFInfo
- Publication number
- CN202550957U CN202550957U CN 201220120570 CN201220120570U CN202550957U CN 202550957 U CN202550957 U CN 202550957U CN 201220120570 CN201220120570 CN 201220120570 CN 201220120570 U CN201220120570 U CN 201220120570U CN 202550957 U CN202550957 U CN 202550957U
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- China
- Prior art keywords
- generator
- excitation
- exciter
- rotor
- excitation unit
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- Expired - Fee Related
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Abstract
The utility model provides an excitation device, comprising a direct current exciter; and the direct current exciter and a generator are coaxially installed. The direct current exciter comprises an armature and an exciting winding arranged on a rotor of the direct current exciter. The excitation device further consists of an excitation regulator and a power supply element; two ends of the excitation regulator are connected with the exciting winding and the armature in series; and the power supply element is electrically connected with the excitation regulator. The excitation device provided by the utility model can realize automatic and precise regulation of the excitation current; and the excitation device has the characteristics of quick response speed, excellent dynamic and static performances, reasonable structure and high automatic program.
Description
Technical field
The utility model relates to the generating set field, especially, relates to a kind of excitation unit of generating set.
Background technology
Excitation system is the important component part of three-phase synchronous generator, and being responsible for generator provides and stablize adjustable exciting current.The quality of excitation unit performance directly influences fail safe, reliability, stability and power supply quality and the generating capacity of generator and power system operation.
In the prior art, DC exciter and generator coaxle are installed, and DC exciter is that generator provides direct current.Particularly, as shown in Figure 1, DC exciter comprises armature 3 ' and is located at the epitrochanterian excitation winding 4 ' of DC exciter that generator comprises stator 1 ' and is located at the rotor winding 2 ' on the generator amature.The rotor winding 2 ' of generator obtains direct current through the commutator that is contained on the generator amature from the armature of DC exciter 3 '.Epitrochanterian excitation winding 4 ' of DC exciter and armature 3 ' constitute the energized circuit of a closure, and adjustable disk resistance 5 ' of series connection in energized circuit is through the adjusting of the adjustable disk resistance 5 ' realization of manual adjustment to exciting current.
But, adopt adjustable disk resistance 5 ' realize adjusting to exciting current exist degree of regulation poor, can not realize self-regulating shortcoming.
The utility model content
The utility model purpose is to provide a kind of excitation unit, with solve existing exciting current degree of regulation poor, can not realize self-regulating technical problem.
For realizing above-mentioned purpose, an aspect according to the utility model provides a kind of excitation unit; Excitation unit comprises DC exciter; A DC exciter and a generator coaxle are installed, and DC exciter comprises armature and the epitrochanterian excitation winding of being located at DC exciter, and excitation unit also comprises field regulator and power supply component; Connect with excitation winding and armature in the two ends of field regulator, power supply component is electrically connected field regulator.
Further, power supply component is a voltage transformer, and voltage transformer is installed on the outlet of generator, and voltage transformer is connected with field regulator.
Further, excitation unit also comprises current transformer, and current transformer is installed on the outlet of generator, and current transformer is connected with field regulator.
Further, generator comprises stator and rotor, stator and the coaxial installation of armature, and the rotor of generator and the rotor coaxial of DC exciter are installed.
Further, the brush that the rotor of generator is provided with rotor winding, commutator and cooperates with commutator, the rotor winding obtains exciting current through brush and steering gear from armature.
The utlity model has following beneficial effect: the excitation unit of the utility model can be realized exciting current is regulated automatically and accurately, and response speed is fast, and dynamic and static state performance is superior, and rational in infrastructure, and automated procedures are high.
Except top described purpose, feature and advantage, the utility model also has other purpose, feature and advantage.To do further detailed explanation to the utility model with reference to figure below.
Description of drawings
The accompanying drawing that constitutes the application's a part is used to provide the further understanding to the utility model, and illustrative examples of the utility model and explanation thereof are used to explain the utility model, do not constitute the improper qualification to the utility model.In the accompanying drawings:
Fig. 1 is the structural representation of related art; And
Fig. 2 is the principle schematic of the excitation unit of the utility model preferred embodiment.
Embodiment
Embodiment to the utility model is elaborated below in conjunction with accompanying drawing, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.
The excitation unit of the utility model is applied in the three-phase synchronous generator, and this excitation unit comprises the DC excitation motor.DC exciter and generator coaxle are installed.
Particularly, referring to Fig. 2, DC exciter comprises armature 3 and is located at the excitation winding 4 on the rotor of DC exciter (figure does not show).Generator comprises stator 1 and is located at the rotor winding 2 on the rotor of generator (figure does not show), the brush that also is provided with commutator on the rotor of generator and cooperates with commutator (figure does not show).Wherein, the armature 3 of DC exciter and the 1 coaxial installation of the stator of generator, the rotor of DC exciter and the rotor coaxial of generator are installed.The rotor winding 2 of generator obtains exciting currents through cooperating the brush installed and commutator from the armature 3 of DC exciter.The rotation under the gas turbine drive of (figure does not show) of the stator 1 of generator, thus alternating current produced.The alternating current that generator produces is through lead 9 outputs.
In order to provide adjustable exciting current, the excitation unit of the utility model also to comprise field regulator 6 and voltage transformer 7 to DC exciter.The two ends of this field regulator 6 are in series with above-mentioned excitation winding 4 and armature 3 respectively, that is: excitation winding 4, field regulator 6 and armature 3 constitute the energized circuit of a closure.This voltage transformer 7 is installed on the outlet of generator, simultaneously, and these voltage transformer 7 series excitation adjusters 6.During use, voltage transformer 7 senses the voltage of the alternating current of the lead 9 of flowing through, thereby obtains first voltage, and current transformer 7 flows to field regulator 6 with this first voltage.This first voltage is realized the power supply to field regulator 6 internal circuits.
Therefore, field regulator 6 not only can be for excitation winding 4 provides exciting current, and through the control to field regulator 6, realizes the adjusting to exciting current.Compared with adjustable disk resistance 5 ' of the prior art, field regulator 6 can be realized the accurate adjusting to exciting current.
In other execution mode of the utility model, also voltage transformer 7 can be set, can adopt other direct current supply element to realize power supply to field regulator 6.
Preferably, in order to realize automatic adjusting to exciting current in the above-mentioned energized circuit.The excitation unit of the utility model also comprises current transformer 8.This current transformer 8 also is installed on the outlet of generator, is used to detect the electric current of the alternating current of lead 9 outputs, and the above-mentioned field regulator 6 of these current transformer 8 series connection.
During use, current transformer 8 real-time senses flow are through the electric current of the alternating current of lead 9, thereby obtain first electric current, and this first electric current is flowed to field regulator 6.The processing module of field regulator 6 is calculated according to first electric current of receiving, thereby obtains the exciting current of needs in the energized circuit, and this exciting current is offered energized circuit.Hence one can see that, and field regulator 6 can be regulated the output of exciting current in real time automatically according to the alternating current of generator output.
In the above-mentioned execution mode of the utility model, the field regulator of being selected for use 6 comprises display module, VRM Voltage Regulator Module, permanent exciting current adjustment module, permanent reactive power adjustment module and constant power factor adjustment module.This display module can demonstrate voltage and the concrete numerical value of electric current of the alternating current of generator output in real time.Field regulator 6 is regulated the output of exciting current according to selected VRM Voltage Regulator Module or permanent exciting current adjustment module or permanent reactive power adjustment module or constant power factor adjustment module, and then makes generator be in corresponding running status.Also be provided with memory in the above-mentioned field regulator 6, to be used to store various parameters.
Known that by above the excitation unit of the utility model can be realized exciting current is regulated automatically and accurately, response speed is fast, and dynamic and static state performance is superior, and rational in infrastructure, and automated procedures are high.
The preferred embodiment that the above is merely the utility model is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All within the spirit and principle of the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection range of the utility model.
Claims (5)
1. excitation unit; Said excitation unit comprises DC exciter, and a said DC exciter and a generator coaxle are installed, and said DC exciter comprises armature (3) and is located at the epitrochanterian excitation winding (4) of said DC exciter; It is characterized in that; Said excitation unit also comprises field regulator (6) and power supply component, connects with said excitation winding (4) and said armature (3) in the two ends of said field regulator (6), and said power supply component is electrically connected said field regulator (6).
2. excitation unit according to claim 1 is characterized in that, said power supply component is voltage transformer (7), and said voltage transformer (7) is installed on the outlet of said generator, and said voltage transformer (7) is connected with said field regulator (6).
3. excitation unit according to claim 1 and 2; It is characterized in that; Said excitation unit also comprises current transformer (8), and said current transformer (8) is installed on the outlet of said generator, and said current transformer (8) is connected with said field regulator (6).
4. excitation unit according to claim 1 is characterized in that, said generator comprises stator (1) and rotor, said stator (1) and the coaxial installation of said armature (3), and the rotor of said generator and the rotor coaxial of said DC exciter are installed.
5. excitation unit according to claim 4; It is characterized in that; The brush that the rotor of said generator is provided with rotor winding (2), commutator and cooperates with said commutator, said rotor winding (2) obtains exciting current through said brush and said steering gear from said armature (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220120570 CN202550957U (en) | 2012-03-27 | 2012-03-27 | Excitation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220120570 CN202550957U (en) | 2012-03-27 | 2012-03-27 | Excitation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202550957U true CN202550957U (en) | 2012-11-21 |
Family
ID=47171517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220120570 Expired - Fee Related CN202550957U (en) | 2012-03-27 | 2012-03-27 | Excitation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202550957U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109995285A (en) * | 2019-04-28 | 2019-07-09 | 泰豪科技股份有限公司 | A kind of control device and electricity generation system |
| CN112165283A (en) * | 2020-10-09 | 2021-01-01 | 中车大连机车车辆有限公司 | Excitation output control method and device and motor |
-
2012
- 2012-03-27 CN CN 201220120570 patent/CN202550957U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109995285A (en) * | 2019-04-28 | 2019-07-09 | 泰豪科技股份有限公司 | A kind of control device and electricity generation system |
| CN112165283A (en) * | 2020-10-09 | 2021-01-01 | 中车大连机车车辆有限公司 | Excitation output control method and device and motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121121 Termination date: 20180327 |