CN103023410A - Double-excitation system for air-cooled generator set - Google Patents
Double-excitation system for air-cooled generator set Download PDFInfo
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- CN103023410A CN103023410A CN2012105621930A CN201210562193A CN103023410A CN 103023410 A CN103023410 A CN 103023410A CN 2012105621930 A CN2012105621930 A CN 2012105621930A CN 201210562193 A CN201210562193 A CN 201210562193A CN 103023410 A CN103023410 A CN 103023410A
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Abstract
The invention relates to the field of generators, in particular to a double-excitation system for an air-cooled generator set, and aims to provide a device for starting inductive load of a generator set. The double-excitation system for the air-cooled generator set is arranged in the generator set, is connected with a generator excitation winding and comprises a compound excitation system and a separate excitation system, wherein the separate excitation system comprises a control unit, and the compound excitation system is connected with the generator set through a control unit. The separate excitation system is used for providing fixed voltage for the generator set, excitation voltage is provided for the excitation winding when the inductive load is started, normal operation of the generator set is ensured, and stability of the generator set is improved. More loads can be used without changing output power, and the cost of the system is greatly reduced.
Description
Technical field
The present invention relates to electrical generator fields, refer to especially a kind of two excitation systems of air-cooled generator group.
Background technology
Inductive load needs rated power 2--3 starting power doubly in the moment that starts.Common generator can produce power output and descend when load is excessive, also can descend for excitation provides the auxiliary winding output of voltage, and excitation winding does not have voltage, causes generator to generate electricity.
Generator of the prior art is for increasing the ability of anti-inductive load, usually adopt an external reactance as energy reserves, when starting inductive load, the generating set overload causes lower voltage, and reactance this moment prevents that because of the energy of distinctive resistance output self storage itself voltage from reducing rapidly.Solve to a certain extent noninductive excitation system and take off the situation of encouraging, but stable exciting voltage, the problems such as finite energy that provide can't be provided in this excitation system existence.
Summary of the invention
The present invention proposes a kind of two excitation systems of air-cooled generator group, and a kind of device that cluster engine starts the inductive load problem that solves is provided.
Technical scheme of the present invention is achieved in that a kind of two excitation systems of air-cooled generator group, be arranged in the generating set, be connected with the generator excitation winding, comprise the compound excitation system, comprise that also it encourages system, described its system of encouraging comprises control unit, and described compound excitation system is connected with generating set by control unit.
Further, the compound excitation system comprises voltage regulator, and voltage regulator is connected with the generator excitation winding.
Optimally, described its system of encouraging is inverter circuit.
Further, described inverter circuit also comprises electric storage device, and described electric storage device is the accumulate pond.
Described control unit comprises I/O interface, detecting unit, regulation and control unit, and control unit is connected with the compound excitation system by this detecting unit.
Described its system of encouraging is connected the I/O interface and is connected with the generator excitation winding with the compound excitation system.
Further, described generating set is provided with carbon brush, and described control unit is connected with carbon brush by the I/O interface.
Described monitoring means comprises the voltage monitoring module.
Described control unit is single-chip microcomputer.
Two excitation systems of a kind of air-cooled generator group provided by the invention except the compound excitation system, also are provided with it and encourage system, for generating set provides fixed voltage, when starting inductive load, provide exciting voltage for excitation winding, guarantee the normal operation of cluster engine, improve the stability of generating set; Can use more load in the situation that do not change power output, greatly reduce system cost.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1: structural representation of the present invention.
Among the figure: 10, generating set; 20, compound excitation system; 21, voltage regulator; 30, it encourages system; 31, inverter circuit; 32, control unit; 321, detecting unit; 322, regulation and control unit; 323, I/O interface.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
Two excitation systems of a kind of air-cooled generator group provided by the invention, be arranged in the generating set 10, be connected with the generator excitation winding, comprise compound excitation system 20, comprise that also it encourages system 30, described it encourage system 30 and comprise control unit 32, described compound excitation system 20 is connected with generating set 10 by control unit 32.Further, compound excitation system 20 comprises voltage regulator 21, and voltage regulator 21 is connected with the generator excitation winding.Optimally, described it to encourage system 30 are inverter circuits 31.Further, described inverter circuit 31 also comprises electric storage device, and described electric storage device is the accumulate pond.Described control unit 32 comprises I/O interface 323, detecting unit 321, regulation and control unit 322, and control unit 32 is connected with compound excitation system 20 by this detecting unit.Further, described generating set 10 is provided with carbon brush, and described control unit 32 is connected with carbon brush by I/O interface 323.Described monitoring means 321 comprises the voltage monitoring module.Described control unit 32 is single-chip microcomputer.
It of setting of the present invention is encouraged system 30 and is inverter circuit 31, and the field power supply of 60V fixedly is provided for generating set 10, is connected with control unit 32 by I/O interface 323;
Controller is provided with the voltage monitoring module, by the magnitude of voltage of monitoring compound excitation system 20;
When generating set 10 starts inductive loads, starting power is excessive, and generating set 10 does not have output voltage, because of underpower, causes Current rise, and voltage drop together drags down the output voltage of auxiliary winding.Cause auxiliary winding to provide the energy for compound excitation system 20, final compound excitation system 20 does not have the energy to offer excitation winding to cause generating set 10 not have power stage.Solution of the prior art is that an external reactance prevents that voltage from reducing rapidly, not only can not guarantee stable voltage, and can not the long period voltage is provided;
It of setting of the present invention is encouraged voltage that system 30 monitors compound excitation system 20 in control module and is lower than it and encourages system's 30 voltages, when being 60V, it encourages system 30 for excitation winding provides exciting voltage control unit 32 regulation and control module controls, guarantees that generating set 10 can export the power supply of certain voltage; After the inductive load startup was finished, power demand was reduced to rated power, and the voltage of the auxiliary winding output of generating set 10 recovers, and control system regulation and control compound excitation provides the energy.
The motor that drives a 2KW take the generating set 10 of 5KW describes as example, when motor start-up, the power that needs 4-6KW, namely need to increase starting current, because power output can not increase, generating set 10 provides lower output voltage, but the low exciting voltage of compound excitation system 20 that can cause of output voltage reduces, encourage to such an extent as to take off, the driving electric machine work of having no idea to prolong the state of generating set 10 low voltages by reactance in the prior art, can only drive the motor of a 2KW, and constant low output voltage can not be provided, can not within a period of time, be in power supply state always; The reactance storage power is limited, and holding time when inductive load starts is shorter, according to load, holds time in 1-3S.The present invention can make it maintain in the 10S, and can drive larger inductive load.
Of the present invention pair of excitation system, the exciting voltage that the monitoring module monitors of control module provides to compound excitation system 20 is lower than it when encouraging the exciting voltage that system 30 provides, by the regulation and control module of control unit 32 compound excitation system 20 is converted to it and encourages system 30, for generating set 10 excitation winding provide constant low pressure, guarantee the normal startup of motor, and can drive a plurality of inductive loads, namely the generator of 5KW can drive the motor of two 2KW;
The generating set 10 of the external reactance compared to existing technology, this excitation system cost still less, efficient is higher, and stability is better.
Two excitation systems of a kind of air-cooled generator group provided by the invention, except compound excitation system 20, also be provided with it and encourage system 30, for generating set 10 provides fixed voltage, when starting inductive load, provide exciting voltage for excitation winding, guarantee the normal operation of cluster engine, improve the stability of generating set 10; Can use more load in the situation that do not change power output, greatly reduce system cost.
Certainly; in the situation that do not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art should make according to the present invention various corresponding changes and distortion, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (9)
1. two excitation systems of an air-cooled generator group, be arranged in the generating set (10), be connected with the generator excitation winding, comprise compound excitation system (20), it is characterized in that: comprise that also it encourages system (30), described it encourage system (30) and comprise control unit (32), described compound excitation system (20) is connected with generating set (10) by control unit (32).
2. two excitation systems of a kind of air-cooled generator group according to claim 1, it is characterized in that: compound excitation system (20) comprises voltage regulator (21), voltage regulator (21) is connected with the generator excitation winding.
3. two excitation systems of a kind of air-cooled generator group according to claim 1 is characterized in that: described it to encourage system (30) be inverter circuit (31).
4. two excitation systems of a kind of air-cooled generator group according to claim 3, it is characterized in that: described inverter circuit (31) also comprises electric storage device, described electric storage device is the accumulate pond.
5. two excitation systems of a kind of air-cooled generator group according to claim 1, it is characterized in that: described control unit (32) comprises I/O interface (323), detecting unit (321), regulation and control unit (322), and control unit (32) is connected with compound excitation system (20) by this detecting unit.
6. two excitation systems of a kind of air-cooled generator group according to claim 1 is characterized in that: described it encourage system (30) and be connected 20 with the compound excitation system) be connected with the generator excitation winding by I/O interface (323).
7. two excitation systems of a kind of air-cooled generator group according to claim 1, it is characterized in that: described generating set (10) is provided with carbon brush, and described control unit (32) is connected with carbon brush by I/O interface (323).
8. two excitation systems of a kind of air-cooled generator group according to claim 5, it is characterized in that: described monitoring means (321) comprises the voltage monitoring module.
9. two excitation systems of a kind of air-cooled generator group according to claim 1, it is characterized in that: described control unit (32) is single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105621930A CN103023410A (en) | 2012-12-21 | 2012-12-21 | Double-excitation system for air-cooled generator set |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105621930A CN103023410A (en) | 2012-12-21 | 2012-12-21 | Double-excitation system for air-cooled generator set |
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| CN103023410A true CN103023410A (en) | 2013-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012105621930A Pending CN103023410A (en) | 2012-12-21 | 2012-12-21 | Double-excitation system for air-cooled generator set |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104852649A (en) * | 2014-12-12 | 2015-08-19 | 重庆五福科技有限公司 | Voltage regulator and voltage regulating circuit for gasoline power generator starting inductive load with equal power |
| WO2019029003A1 (en) * | 2017-08-11 | 2019-02-14 | 广西玉柴机器股份有限公司 | Vehicle generator control method and system thereof |
| CN114157190A (en) * | 2021-11-02 | 2022-03-08 | 北京精密机电控制设备研究所 | Negative excitation control method of power take-off vehicle-mounted power supply |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20060066287A1 (en) * | 2004-09-21 | 2006-03-30 | Denso Corporation | Method and system for controlling power to be fed to electrical loads |
| EP2288017A1 (en) * | 2009-07-30 | 2011-02-23 | Alstom Technology Ltd | Static exciter of a field winding and method for operating the same |
| CN102013866A (en) * | 2009-09-07 | 2011-04-13 | 阿尔斯托姆科技有限公司 | Static exciter of an electric generator, method for retrofitting and method for operating the same |
| CN102386826A (en) * | 2011-10-28 | 2012-03-21 | 华中科技大学 | Self-shunt excitation system based on energy storage type dynamic voltage restorer |
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2012
- 2012-12-21 CN CN2012105621930A patent/CN103023410A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060066287A1 (en) * | 2004-09-21 | 2006-03-30 | Denso Corporation | Method and system for controlling power to be fed to electrical loads |
| EP2288017A1 (en) * | 2009-07-30 | 2011-02-23 | Alstom Technology Ltd | Static exciter of a field winding and method for operating the same |
| CN102013866A (en) * | 2009-09-07 | 2011-04-13 | 阿尔斯托姆科技有限公司 | Static exciter of an electric generator, method for retrofitting and method for operating the same |
| CN102386826A (en) * | 2011-10-28 | 2012-03-21 | 华中科技大学 | Self-shunt excitation system based on energy storage type dynamic voltage restorer |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104852649A (en) * | 2014-12-12 | 2015-08-19 | 重庆五福科技有限公司 | Voltage regulator and voltage regulating circuit for gasoline power generator starting inductive load with equal power |
| WO2019029003A1 (en) * | 2017-08-11 | 2019-02-14 | 广西玉柴机器股份有限公司 | Vehicle generator control method and system thereof |
| US11002198B2 (en) | 2017-08-11 | 2021-05-11 | Guangxi Yuchai Machinery Co., Ltd. | Vehicle generator control method and system thereof |
| CN114157190A (en) * | 2021-11-02 | 2022-03-08 | 北京精密机电控制设备研究所 | Negative excitation control method of power take-off vehicle-mounted power supply |
| CN114157190B (en) * | 2021-11-02 | 2024-02-13 | 北京精密机电控制设备研究所 | Negative excitation control method of power take-off vehicle-mounted power supply |
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Application publication date: 20130403 |