CN103633858B - Power generator set, power generation system and rectifying method in power generation process - Google Patents
Power generator set, power generation system and rectifying method in power generation process Download PDFInfo
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- CN103633858B CN103633858B CN201310589808.3A CN201310589808A CN103633858B CN 103633858 B CN103633858 B CN 103633858B CN 201310589808 A CN201310589808 A CN 201310589808A CN 103633858 B CN103633858 B CN 103633858B
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Abstract
The invention discloses a power generator set, a power generation system and a rectifying method in a power generation process and relates to the technical field of power and electronics. The possibility of damage caused by the unstable input current of a standard rectifier is reduced. The power generator set comprises a tri-phase power generator for generating and outputting tri-phase alternating current, a phase-shift transformer of which the input end is connected with the output end of the tri-phase power generator, a 2n pipe bridge rectifier of which the input end is connected with the output end of the phase-shift transformer, and the standard rectifier of which the input end is connected with the output end of the 2n pipe bridge rectifier, wherein the phase-shift transformer is used for converting the tri-phase alternating current into n-phase alternating current, n is an integer larger than 3, the 2n pipe bridge rectifier is used for converting the n-phase alternating current into direct current with overlapped 2n pulse wave alternating current component, and the standard rectifier is used for converting the direct current with the overlapped 2n pulse alternating current component into standard direct current.
Description
Technical field
The present invention relates in electric and electronic technical field, more particularly to a kind of generating set, electricity generation system and power generation process
Method for rectifying.
Background technology
Current communication equipment and its battery use diesel generating set as stand-by power supply, wherein, battery is when charging
Just use as load, when battery need not charge, the load of diesel generating set only has communication equipment.For example, communication sets
Standby power is 1.5～3kw, and power when battery charges is 3～5kw, and now the bearing power of diesel generating set is divided into two
Individual interval, is 1.5～3kw and 4.5～8kw respectively.Diesel generating set is limited with one to bearing power in addition, actual negative
Carry power and be greater than the 30% of general power, otherwise, can cause electromotor that fuel consumption height, burn oil are caused because bearing power is too small
The problems such as, the life-span of serious curtailment electromotor.
Prior art allows electromotor to work using with the problems referred to above are overcome by the way of carrying speed governing when bearing power is larger
In fast state, make the general power of diesel-driven generator larger；When bearing power is less, electromotor is allowed to be operated in lower-speed state,
Make the general power of diesel-driven generator less.Due to state of the electromotor in variable-speed operation, the alternating current of frequency conversion is sent, and is exchanged
Electric frequency range in 50～500Hz, accordingly, it would be desirable to first by the AC rectification of frequency conversion into stable unidirectional current.Prior art is adopted
The three-phase alternating current that electromotor is exported is converted to the unidirectional current of 6 pulse wave alternating components of superposition with three-phase bridge rectifier circuit, then
The unidirectional current of the 6 pulse wave alternating component of superposition is converted to into standard unidirectional current by standard rectifiers.But, due to the superposition 6
The unidirectional current of pulse wave alternating component is not steady enough, when being changed by standard rectifiers, easily causes inside standard rectifiers
Element over-temperature is damaged.
The content of the invention
The present invention provides the method for rectifying in a kind of generating set, electricity generation system and power generation process, reduces normal rectification
Device causes the probability for damaging because input current is not steady enough.
To solve above-mentioned technical problem, the present invention is adopted the following technical scheme that：
On the one hand, the invention provides a kind of generating set, including：
Threephase generator, for producing and exporting three-phase alternating current；
Phase-shifting transformer, the input of the phase-shifting transformer are connected to the outfan of the threephase generator, the shifting
For the three-phase alternating current is converted to n cross streams electricity, wherein n is the integer more than 3 to phase transformer；
2n bridge rectifiers, the input of the 2n bridge rectifiers are connected to the output of the phase-shifting transformer
End, the 2n bridge rectifiers are superimposed the unidirectional current of 2n pulse wave alternating components for the n cross streams electricity is converted to；
Standard rectifiers, the input of the standard rectifiers are connected to the outfan of the 2n bridge rectifiers, institute
Standard rectifiers are stated for the unidirectional current of the superposition 2n pulse wave alternating components is converted to standard unidirectional current.
With reference in a first aspect, in the first implementation of first aspect, the n=9..
With reference to the first implementation of first aspect or first aspect, in second implementation of first aspect,
Between the input of the outfan of the threephase generator and the phase-shifting transformer, having air switch is set, for overload and it is short
Protect on road.
With reference to second implementation of the first implementation or first aspect of first aspect or first aspect,
In the third implementation of one side, the threephase generator is magneto.
With reference to the third implementation of first aspect, in the 4th kind of implementation of first aspect, the permanent magnetism is sent out
Motor is diesel-driven generator.
With reference to second implementation of the first implementation or first aspect of first aspect or first aspect,
In 5th kind of implementation of one side, the generating set is used for communication equipment and its battery.
Second aspect, the invention provides a kind of electricity generation system, including generating set and generating set connection is logical
Letter equipment, the generating set are above-mentioned generating set.
With reference to second aspect, in the first implementation of second aspect, also include what is be connected with the generating set
Battery.
The third aspect, the invention provides the method for rectifying in a kind of power generation process, including：
Produce and export three-phase alternating current；
The three-phase alternating current is converted to into n cross streams electricity, wherein n is the integer more than 3；
The n cross streams electricity is converted to into the unidirectional current of superposition 2n pulse wave alternating components；
The unidirectional current of the superposition 2n pulse wave alternating components is converted to into standard unidirectional current.
It is with reference to the third aspect, in the first implementation of the third aspect, described that the three-phase alternating current is converted to into n
Cross streams electricity is：
The three-phase alternating current is converted to into 9 cross streams electricity；
It is described by the n cross streams electricity be converted to superposition 2n pulse wave alternating components unidirectional current be：
The 9 cross streams electricity is converted to into the unidirectional current of 18 pulse wave alternating components of superposition；
The unidirectional current by the superposition 2n pulse wave alternating components is converted to standard unidirectional current and is：
The unidirectional current of 18 pulse wave alternating components of the superposition is converted to into standard unidirectional current.
Method for rectifying in generating set, electricity generation system and power generation process that the present invention is provided, first by three-phase alternating current
N cross streams electricity is converted to, wherein n is the integer more than 3, n cross streams electricity is converted to into superposition 2n pulse wave alternating components then
Unidirectional current, unidirectional current now are more steady, cause to damage because input current is not steady enough so as to reduce standard rectifiers
Probability.
Description of the drawings
For the technical scheme being illustrated more clearly that in the embodiment of the present invention, below will be to embodiment or description of the prior art
Needed for accompanying drawing to be used be briefly described, it should be apparent that, drawings in the following description be only the present invention some
Embodiment, for those of ordinary skill in the art, on the premise of not paying creative work, can be with attached according to these
Figure obtains other accompanying drawings.
Fig. 1 is a kind of structured flowchart of generating set in the embodiment of the present invention；
Fig. 2 is the structural representation of another kind of generating set in the embodiment of the present invention；
Fig. 3 is the structural representation of phase-shifting transformer in Fig. 2；
Fig. 4 is the structural representation of 18 bridge rectifiers in Fig. 2；
Fig. 5 is a kind of structured flowchart of electricity generation system in the embodiment of the present invention；
Flow charts of the Fig. 6 for the method for rectifying in a kind of power generation process in the embodiment of the present invention；
Flow charts of the Fig. 7 for the method for rectifying in another kind of power generation process in the embodiment of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than the embodiment of whole.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
As shown in figure 1, embodiments providing a kind of generating set, can be used for communication equipment, the generating set
Including：Threephase generator 1, for producing and exporting three-phase alternating current；Phase-shifting transformer 2, the input connection of phase-shifting transformer 2
In the outfan of threephase generator 1, phase-shifting transformer 2 intersects for the three-phase alternating current that threephase generator 1 is exported is converted to n
Stream electricity is simultaneously exported, and wherein n is the integer more than 3, such as n=6, n=9, n=12 etc., and phase-shifting transformer 2 is the one of rectifier transformer
Kind, select different phase places to be attached in primary side, then coordinate second siding ring using no wiring, make output voltage
Phase place changes with the need, and the phase-shifting transformer 2 has three-phase alternating current input and n cross streams outfans；2n pipe bridge rectifiers
Device 3, the input of 2n bridge rectifiers 3 are connected to the outfan of phase-shifting transformer 2,2n bridge rectifiers 3 be used for by
The unidirectional current that n cross streams electricity is converted to superposition 2n pulse wave alternating components is stated, unidirectional current now has 2n in an ac cycle
Individual pulse wave, compared with having 6 pulse waves in an ac cycle in prior art, the pulse number in the unit interval is more, but arteries and veins
The amplitude of ripple is less, therefore unidirectional current now is more steady, and the 2n bridge rectifiers 3 are with n cross streams input and directly
Stream outfan；Standard rectifiers 4, the input of standard rectifiers 4 are connected to the outfan of 2n bridge rectifiers 3, and standard is whole
Device 4 is flowed for the unidirectional current of above-mentioned superposition 2n pulse wave alternating components is converted to standard unidirectional current, the outfan of standard rectifiers 4
For connecting load.It should be noted that the unidirectional current of the more big input of then standard rectifiers 4 of the value of n is more steady, can be according to mark
The receiving ability of quasi- commutator 4 or other specifically need adjust n value.
Generating set in the present embodiment, is turned by the three-phase alternating current that threephase generator is exported by phase-shifting transformer first
N cross streams electricity is changed to, wherein n is the integer more than 3, and n cross streams electricity is converted to superposition by 2n bridge rectifiers then
The unidirectional current of 2n pulse wave alternating components, unidirectional current now are more steady, so as to reduce standard rectifiers because of input current not
Probability that is enough steady and causing damage.
Alternatively, as shown in Figures 2 and 3, above-mentioned phase-shifting transformer 2 for by three-phase alternating current be converted to 9 cross streams electricity,
N=9 is chosen as, the phase-shifting transformer 2 has three-phase alternating current input and 9 cross streams outfans；The output of threephase generator 1
Having air switch 5 is set between end and the input of phase-shifting transformer 2, for overload and short-circuit protection.As shown in figure 4,2n pipes
Bridge rectifier 3 be 18 bridge rectifiers, i.e., the bridge rectifier being made up of 18 standard diodes, 18 bridge rectifiers
For above-mentioned 9 cross streams electricity to be converted to the unidirectional current of 18 pulse wave alternating components of superposition, 18 bridge rectifier is intersecting with 9
Stream input and DC output end；Standard rectifiers 4 are for being converted to mark by the unidirectional current of 18 pulse wave alternating component of above-mentioned superposition
Quasi- unidirectional current.The outfan of standard rectifiers 4 is connected to load 6.
Specifically, threephase generator 1 can be magneto, and the magneto can be diesel-driven generator；It is above-mentioned
Generating set specifically can be used for communication equipment and its battery.
Generating set in the present embodiment, is turned by the three-phase alternating current that threephase generator is exported by phase-shifting transformer first
9 cross streams electricity is changed to, then 9 cross streams electricity are converted to by 18 bridge rectifiers the direct current of 18 pulse wave alternating components of superposition
Electricity, unidirectional current now are more steady, cause damage several because input current is not steady enough so as to reduce standard rectifiers
Rate.
As shown in figure 5, the present embodiment provides a kind of electricity generation system, including generating set 10, and the generating set 10 connect
Rechargeable battery 11 and communication equipment 12, generating set 10 be the various embodiments described above in generating set.Rechargeable battery 11 and logical
Letter equipment 12 is connected to the outfan of 10 Plays commutator of generating set.
The concrete structure and principle of generating set is same as the previously described embodiments, will not be described here.
Electricity generation system in the present embodiment, is turned by the three-phase alternating current that threephase generator is exported by phase-shifting transformer first
N cross streams electricity is changed to, wherein n is the integer more than 3, and n cross streams electricity is converted to superposition by 2n bridge rectifiers then
The unidirectional current of 2n pulse wave alternating components, unidirectional current now are more steady, so as to reduce standard rectifiers because of input current not
Probability that is enough steady and causing damage.
As shown in fig. 6, the present embodiment provides the method for rectifying in a kind of power generation process, can be used in above-described embodiment
Generating set, the method for rectifying in the power generation process include：
Step 101, produce and export three-phase alternating current；
Step 102, the three-phase alternating current is converted to n cross streams electricity, wherein n is the integer more than 3；
Step 103, the unidirectional current that the n cross streams electricity is converted to superposition 2n pulse wave alternating components；
Step 104, the unidirectional current of superposition 2n pulse wave alternating components is converted to into standard unidirectional current.
The standard unidirectional current obtained through above-mentioned steps is used to be supplied to load, such as communication equipment and rechargeable battery.
The concrete principle of the method for rectifying in the power generation process is same as the previously described embodiments, will not be described here.
Three-phase alternating current is converted to n cross streams electricity, wherein n by method for rectifying in the present embodiment in power generation process first
It is the integer more than 3, then n cross streams electricity is converted to the unidirectional current of superposition 2n pulse wave alternating components, unidirectional current now is more
Plus it is steady, the probability that damage is caused because input current is not steady enough so as to reduce standard rectifiers.
Preferably, as shown in fig. 7, above-mentioned be converted to n cross streams electricity by the three-phase alternating current and be：
Step 1021, the three-phase alternating current is converted to 9 cross streams electricity；
It is above-mentioned by the n cross streams electricity be converted to superposition 2n pulse wave alternating components unidirectional current be：
Step 1031, the unidirectional current that the 9 cross streams electricity is converted to 18 pulse wave alternating components of superposition；
The above-mentioned unidirectional current by superposition 2n pulse wave alternating components is converted to standard unidirectional current and is：
Step 1041, the unidirectional current of the 18 pulse wave alternating component of superposition is converted to into standard unidirectional current.
The concrete principle of the method for rectifying in the power generation process is same as the previously described embodiments, will not be described here.
Three-phase alternating current is converted to 9 cross streams electricity by method for rectifying in the present embodiment in power generation process first, then will
9 cross streams electricity are converted to the unidirectional current of 18 pulse wave alternating components of superposition, and unidirectional current now is more steady, so as to reduce standard
Commutator causes the probability for damaging because input current is not steady enough.
The above, the only specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained
Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be defined by the scope of the claims.
Claims (8)
1. a kind of generating set, it is characterised in that include：
Threephase generator, for producing and exporting three-phase alternating current；
Phase-shifting transformer, the input of the phase-shifting transformer are connected to the outfan of the threephase generator, and the phase shift becomes
For the three-phase alternating current is converted to n cross streams electricity, wherein n is the integer more than 3 to depressor；
2n bridge rectifiers, the input of the 2n bridge rectifiers are connected to the outfan of the phase-shifting transformer, institute
2n bridge rectifiers are stated for the n cross streams electricity to be converted to the unidirectional current of superposition 2n pulse wave alternating components；
Standard rectifiers, the input of the standard rectifiers are connected to the outfan of the 2n bridge rectifiers, the mark
Quasi- commutator is for being converted to standard unidirectional current by the unidirectional current of the superposition 2n pulse wave alternating components；
Wherein, n=12.
2. generating set according to claim 1, it is characterised in that
Having air switch is set between the input of the outfan of the threephase generator and the phase-shifting transformer, for transshipping
And short-circuit protection.
3. generating set according to claim 1 and 2, it is characterised in that
The threephase generator is magneto.
4. generating set according to claim 3, it is characterised in that
The magneto is diesel-driven generator.
5. generating set according to claim 1, it is characterised in that
The generating set is used for communication equipment and its battery.
6. a kind of electricity generation system, including generating set and the communication equipment of generating set connection, it is characterised in that described
Generating set is the generating set as described in any one in claim 1 to 5.
7. electricity generation system according to claim 6, it is characterised in that also include the battery being connected with the generating set.
8. the method for rectifying in a kind of power generation process, it is characterised in that include：
Produce and export three-phase alternating current；
The three-phase alternating current is converted to into n cross streams electricity, wherein n is the integer more than 3；
The n cross streams electricity is converted to into the unidirectional current of superposition 2n pulse wave alternating components；
The unidirectional current of the superposition 2n pulse wave alternating components is converted to into standard unidirectional current；
Wherein, n=12.
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| CN201310589808.3A CN103633858B (en) | 2013-11-20 | 2013-11-20 | Power generator set, power generation system and rectifying method in power generation process |
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| CN201310589808.3A CN103633858B (en) | 2013-11-20 | 2013-11-20 | Power generator set, power generation system and rectifying method in power generation process |
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| CN103633858B true CN103633858B (en) | 2017-04-12 |
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| CN109962630B (en) * | 2017-12-26 | 2021-03-16 | 天津市大千机电科技发展有限公司 | Three-phase 18-pulse asymmetric Y-shaped output winding phase-shifting rectifying device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102891613A (en) * | 2011-07-21 | 2013-01-23 | 台达电子企业管理（上海）有限公司 | Alternating current (AC) to direct current (DC) power converter and DC charging station |
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| US8339820B2 (en) * | 2009-11-04 | 2012-12-25 | Rockwell Automation Technologies, Inc. | Thirty-six pulse power transformer and power converter incorporating same |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102891613A (en) * | 2011-07-21 | 2013-01-23 | 台达电子企业管理（上海）有限公司 | Alternating current (AC) to direct current (DC) power converter and DC charging station |
Non-Patent Citations (1)
| Title |
|---|
| "多脉波整流电路在直驱式风力发电中的应用";温春雪等;《电力电子技术》;20080531;第42卷(第5期);59-60 * |
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