CN108847775A - Novel electric power electric transformer topological structure - Google Patents
Novel electric power electric transformer topological structure Download PDFInfo
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- CN108847775A CN108847775A CN201810635345.2A CN201810635345A CN108847775A CN 108847775 A CN108847775 A CN 108847775A CN 201810635345 A CN201810635345 A CN 201810635345A CN 108847775 A CN108847775 A CN 108847775A
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- circuit
- bridge
- bridge circuit
- electric power
- topological structure
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/40—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
- H02M5/42—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters
- H02M5/44—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac
- H02M5/453—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal
- H02M5/458—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M5/4585—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only having a rectifier with controlled elements
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/12—Arrangements for reducing harmonics from ac input or output
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33569—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
- H02M3/33576—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements having at least one active switching element at the secondary side of an isolation transformer
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
Abstract
The present invention provides a kind of novel electric power electric transformer topological structure, including a sequentially connected input stage circuit, an isolation level circuit and an output-stage circuit, the input stage circuit includes three the first H-bridge circuits and three the first DC capacitors, first H-bridge circuit successively cascades, and first DC capacitor is connected between two output ends of each first H-bridge circuit；First H-bridge circuit is made of four IGBT.A kind of novel electric power electric transformer topological structure of the invention is enable to respond quickly, systems stabilisation, and be avoided that the damage of the mutation distortion and device of the electrical quantity such as voltage and current for there is the case where laod unbalance.
Description
Technical field
The present invention relates to field of power electronics more particularly to a kind of novel electric power electric transformer topological structures.
Background technique
The research of early stage electric power electric transformer is by device for high-power power electronic at that time and high-power converter technique
The limitation of development level, the various design schemes proposed not can enter functionization.Into late 1990s, electric power electricity
There is new progress in the research of sub- transformer.China started to carry out the research of electric power electric transformer in 2002 or so, main
Concentrate on the control strategy and loss analysis and appraisal procedure etc. of novel circuit topological, high-efficiency operation.Through in a few years
Research, electric power electric transformer gradually moves towards market, pushed the development of electrical power trans mission/distribution system, improves the intelligence of existing power grid
Change horizontal.
But existing electric power electric transformer generally has circuit topology complexity, operational efficiency are low and cost is excessively high to ask
Topic, meanwhile, existing tradition AC/DC/AC electric power electric transformer, which is applied, will appear overcurrent, overvoltage in large-power occasions
And the problems such as harmonic oscillation.
Summary of the invention
In view of the deficiency of the prior art, the present invention provides a kind of novel electric power electric transformer topological structure, right
It in there is the case where laod unbalance, is enable to respond quickly, systems stabilisation, and is avoided that the mutation of the electrical quantity such as voltage and current is abnormal
Become the damage with device.
To achieve the goals above, the present invention provides a kind of novel electric power electric transformer topological structure, including successively connects
An input stage circuit, an isolation level circuit and the output-stage circuit connect, the input stage circuit include three the first H-bridge circuits
With three the first DC capacitors, first H-bridge circuit is successively cascaded, between two output ends of each first H-bridge circuit
It is connected with first DC capacitor；First H-bridge circuit is made of four IGBT.
Preferably, the isolation level circuit includes three isolation level sub-circuits, and each first H-bridge circuit connects an institute
Isolation level sub-circuit is stated, each isolation level sub-circuit includes：
One second H-bridge circuit, the output end of corresponding first H-bridge circuit of input terminal connection of second H-bridge circuit；
One primary side LC resonance circuit, the output end of the second H-bridge circuit described in the input terminal of the primary side LC resonance circuit；
One magnetizing inductance, the magnetizing inductance are series on the primary side LC resonance circuit；
One primary side winding, the primary side winding are in parallel with the magnetizing inductance；
One secondary side LC resonance circuit；
One vice-side winding, the vice-side winding are series at the secondary side LC resonance circuit；
One third H-bridge circuit, the input terminal of the third H-bridge circuit connect the output end of the secondary side LC resonance circuit；
With
One first capacitor, the first capacitor are connected between two output ends of the third H-bridge circuit.
Preferably, the primary side LC resonance circuit and the secondary side LC resonance circuit respectively include the resonance being connected in series
Capacitor and a resonant inductance.
Preferably, second H-bridge circuit and the H-bridge circuit are made of four IGBT respectively.
Preferably, the output-stage circuit includes：Three three-phase inverter bridge circuits and a LC filter circuit, the LC filtering
The input terminal of circuit connects the output end of each three-phase inverter bridge circuit；The output end of each third H-bridge circuit connects
Connect the input terminal of a three-phase inverter bridge circuit；One load of output end connection of the LC filter circuit.
Preferably, the LC filter circuit includes that three LC filter sub-circuit, the input terminal point of each LC filtering sub-circuit
An out of phase output end for each three-phase inverter bridge circuit, the output end phase of each LC filtering sub-circuit are not connected
Even, each LC filtering sub-circuit includes the filter inductance and a filter capacitor being connected in series；Three inputs of the load
End is connected between the filter inductance and the filter capacitor of each LC filtering sub-circuit.
Preferably, the three-phase inverter bridge circuit is made of six IGBT respectively.
The present invention makes it have following beneficial effect due to using above technical scheme：
Input stage circuit includes the first H-bridge circuit, can be realized to press and flow, reduces the receiving voltage of single rectifier bridge；
First H-bridge circuit stable module internal direct current capacitance voltage, rear class the first H-bridge circuit stable DC busbar voltage are conducive to subtract
The receiving voltage of small single rectifier bridge, while reducing the loss of switching device.It is aided with DC capacitor realization again and filters out harmonic wave
Function.Meanwhile the use of IGBT is so that the utility model is more economical.Successively cascade structure plays first H-bridge circuit
The purpose of pressure, so that more convenient accurate when measurement voltage.Isolation level sub-circuit include primary side LC resonance circuit, magnetizing inductance and
Secondary side LC resonance circuit has and inhibits harmonic wave well and realize that zero-voltage current cut-offs function, solves traditional DC/DC transformation
The serious problem of device harmonic oscillation, and operational efficiency is high, and performance is stablized.Primary side LC resonance circuit and secondary side LC resonance circuit can
To filter out high-frequency harmonic well, the compensation of reactive power can also be carried out, there is the spy of high conversion efficiency, high power density
Point, and energy can flexible bi-directional, while having fully considered influence of the magnetizing inductance to system of high frequency transformer.It is defeated
Grade circuit includes three-phase inverter bridge circuit and LC filter circuit out, can cope with the imbalance of voltage and load well, disappear
Influence except nonlinear load to voltage on line side reduces voltage harmonic.Three-phase inverter bridge circuit is made of six IGBT respectively,
Can be well by DC inverter at the alternating current of constant pressure, constant frequency, while can quickly be rung in voltage and laod unbalance
It answers.LC filter circuit is used to filter out harmonic wave and eliminate the influence of nonlinear load.
Detailed description of the invention
Fig. 1 is the integrated circuit structural schematic diagram of the novel electric power electric transformer topological structure of the embodiment of the present invention；
Fig. 2 is the structural representation of the input stage circuit of the novel electric power electric transformer topological structure of the embodiment of the present invention
Figure；
Fig. 3 is the structural representation of the isolation level circuit of the novel electric power electric transformer topological structure of the embodiment of the present invention
Figure；
Fig. 4 is the structural representation of the output-stage circuit of the novel electric power electric transformer topological structure of the embodiment of the present invention
Figure.
Specific embodiment
Below according to attached FIG. 1 to FIG. 4, presently preferred embodiments of the present invention is provided, and is described in detail, is enabled more preferable geographical
Solve function of the invention, feature.
Please referring to Fig. 1 and Fig. 2, the embodiment of the present invention provides a kind of novel electric power electric transformer topological structure, including according to
An input stage circuit 1, an isolation level circuit 2 and an output-stage circuit 3 for secondary connection, input stage circuit 1 include three the first H bridges
Circuit 11 and three DC capacitor C1, the first H-bridge circuit 11 successively cascade, between two output ends of every one first H-bridge circuit 11
It is connected with a DC capacitor C1；First H-bridge circuit 11 is made of four IGBTQ.
A kind of novel electric power electric transformer topological structure of the embodiment of the present invention, input stage circuit 1 include the first H bridge
Circuit 11 can be realized to press and flow, and reduce the receiving voltage of single rectifier bridge；In 11 stable module of the first H-bridge circuit of prime
Portion's DC capacitor voltage, 11 stable DC busbar voltage of the first H-bridge circuit of rear class are conducive to the receiving electricity for reducing single rectifier bridge
Pressure, while reducing the loss of switching device.It is aided with DC capacitor C1 again and realizes the function of filtering out harmonic wave.Meanwhile IGBTQ is adopted
With making the utility model more economical.Successively cascade structure plays the purpose pressed to first H-bridge circuit 11, so that measurement
It is more convenient accurate when voltage.
FIG. 1 to FIG. 3 is please referred to, isolation level circuit 2 includes three isolation level sub-circuits 21, and every one first H-bridge circuit 11 connects
An isolation level sub-circuit 21 is connect, each isolation level sub-circuit 21 includes：One second H-bridge circuit 211, a primary side LC resonance circuit,
The secondary side LC resonance circuit of one magnetizing inductance Lm, a primary side winding 212, one, a vice-side winding 213,214 and of a third H-bridge circuit
One first capacitor C2；Wherein, the input terminal of the second H-bridge circuit 211 connects the output end of corresponding first H-bridge circuit 11；Primary side LC
The output end of the second H-bridge circuit of input terminal 211 of resonance circuit；Magnetizing inductance Lm is series on primary side LC resonance circuit；Primary side
Winding 212 is in parallel with magnetizing inductance Lm；Vice-side winding 213 is series at secondary side LC resonance circuit；The input of third H-bridge circuit 214
Hold the output end of auxiliary connection side LC resonance circuit；First capacitor C2 is connected between two output ends of third H-bridge circuit 214.It is former
In LC resonance circuit and pair, LC resonance circuit respectively includes the resonant capacitance C3 and a resonant inductance L1 that are connected in series.This reality
It applies in example, the second H-bridge circuit 211 and H-bridge circuit are made of four IGBTQ respectively.
Isolation level sub-circuit 21 includes primary side LC resonance circuit, magnetizing inductance Lm and secondary side LC resonance circuit, that is, is used
The two-way DC/DC translation circuit of LLC mode of resonance has and inhibits harmonic wave well and realize that zero-voltage current cut-offs function, solves
The serious problem of traditional DC/DC converter harmonic oscillation, and operational efficiency is high, and performance is stablized.The master of isolation level sub-circuit 21
Acting on is that DC voltage is modulated into high-frequency ac voltage in high frequency transformer primary side, behind the transformer coupled side to pair, then
It is reduced into DC voltage.Primary side LC resonance circuit and secondary side LC resonance circuit can filter out high-frequency harmonic well, can also be into
The compensation of row reactive power, there is the characteristics of high conversion efficiency, high power density, and energy can flexible bi-directional, together
When fully considered influence of the magnetizing inductance Lm of high frequency transformer to system.
FIG. 1 to FIG. 4 is please referred to, output-stage circuit 3 includes：Three three-phase inverter bridge circuits 31 and a LC filter circuit 32,
The input terminal of LC filter circuit 32 connects the output end of each three-phase inverter bridge circuit 31；The output of each third H-bridge circuit 214
The input terminal of one three-phase inverter bridge circuit 31 of end connection；One load 4 of output end connection of LC filter circuit 32.
Wherein, LC filter circuit 32 includes that three LC filter sub-circuit, and the input terminal of each LC filtering sub-circuit is separately connected respectively
The output end of an out of phase output end for three-phase inverter bridge circuit 31, each LC filtering sub-circuit is connected, every LC filtering
Circuit includes the filter inductance L2 and a filter capacitor C4 being connected in series；Three input terminals of load 4 are connected to each LC filter
Between the filter inductance L2 and filter capacitor C4 of marble circuit.In the present embodiment, three-phase inverter bridge circuit 31 is respectively by six
IGBTQ composition.
Output-stage circuit 3 include three-phase inverter bridge circuit 31 and LC filter circuit 32, can cope with well voltage and
The imbalance of load eliminates influence of the nonlinear load to voltage on line side, reduces voltage harmonic.Three-phase inverter bridge circuit 31 divides
It is not made of six IGBTQ, it can be well by DC inverter at the alternating current of constant pressure, constant frequency, while in voltage and load
It is enable to respond quickly when uneven.LC filter circuit 32 is used to filter out harmonic wave and eliminate the influence of nonlinear load.
The embodiment of the present invention provides a kind of novel electric power electric transformer topological structure, with traditional electric power electric transformer
It is more excellent compared in terms of pressing stream, inhibition；For there is the case where laod unbalance, it is enable to respond quickly, surely
Determine system, and is avoided that the damage of the mutation distortion and device of the electrical quantity such as voltage and current.
The present invention has been described in detail with reference to the accompanying drawings, those skilled in the art can be according to upper
It states and bright many variations example is made to the present invention.Thus, certain details in embodiment should not constitute limitation of the invention, this
Invention will be using the range that the appended claims define as protection scope of the present invention.
Claims (7)
1. a kind of novel electric power electric transformer topological structure, which is characterized in that including a sequentially connected input stage circuit, one
Isolation level circuit and an output-stage circuit, the input stage circuit include three the first H-bridge circuits and three the first DC capacitors,
First H-bridge circuit successively cascades, and first direct current is connected between two output ends of each first H-bridge circuit
Capacitor；First H-bridge circuit is made of four IGBT.
2. novel electric power electric transformer topological structure according to claim 1, which is characterized in that the isolation level circuit
Including three isolation level sub-circuits, each first H-bridge circuit connects an isolation level sub-circuit, each isolation level
Sub-circuit includes：
One second H-bridge circuit, the output end of corresponding first H-bridge circuit of input terminal connection of second H-bridge circuit；
One primary side LC resonance circuit, the output end of the second H-bridge circuit described in the input terminal of the primary side LC resonance circuit；
One magnetizing inductance, the magnetizing inductance are series on the primary side LC resonance circuit；
One primary side winding, the primary side winding are in parallel with the magnetizing inductance；
One secondary side LC resonance circuit；
One vice-side winding, the vice-side winding are series at the secondary side LC resonance circuit；
One third H-bridge circuit, the input terminal of the third H-bridge circuit connect the output end of the secondary side LC resonance circuit；With
One first capacitor, the first capacitor are connected between two output ends of the third H-bridge circuit.
3. novel electric power electric transformer topological structure according to claim 2, which is characterized in that the primary side LC resonance
Circuit and the secondary side LC resonance circuit respectively include the resonant capacitance and a resonant inductance that are connected in series.
4. novel electric power electric transformer topological structure according to claim 3, which is characterized in that the 2nd H bridge electricity
Road and the H-bridge circuit are made of four IGBT respectively.
5. novel electric power electric transformer topological structure according to claim 4, which is characterized in that the output-stage circuit
Including：The input terminal of three three-phase inverter bridge circuits and a LC filter circuit, the LC filter circuit connects each three-phase bridge
The output end of formula inverter circuit；The output end of each third H-bridge circuit connects the defeated of a three-phase inverter bridge circuit
Enter end；One load of output end connection of the LC filter circuit.
6. novel electric power electric transformer topological structure according to claim 5, which is characterized in that the LC filter circuit
Sub-circuit is filtered including three LC, the input terminal of each LC filtering sub-circuit is separately connected each three-phase inverter bridge circuit
The output end of an out of phase output end, each LC filtering sub-circuit is connected, and each LC filtering sub-circuit includes series connection
A connected filter inductance and a filter capacitor；Three input terminals of the load are connected to each LC filtering sub-circuit
Between the filter inductance and the filter capacitor.
7. novel electric power electric transformer topological structure according to claim 6, which is characterized in that the three-phase bridge is inverse
Power transformation road is made of six IGBT respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810635345.2A CN108847775A (en) | 2018-06-20 | 2018-06-20 | Novel electric power electric transformer topological structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810635345.2A CN108847775A (en) | 2018-06-20 | 2018-06-20 | Novel electric power electric transformer topological structure |
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| CN108847775A true CN108847775A (en) | 2018-11-20 |
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| CN201810635345.2A Pending CN108847775A (en) | 2018-06-20 | 2018-06-20 | Novel electric power electric transformer topological structure |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109921653A (en) * | 2019-03-21 | 2019-06-21 | 中南大学 | A kind of Monophase electric power electronic transformer topological structure and its control method |
| CN110254266A (en) * | 2019-07-10 | 2019-09-20 | 上海交通大学 | A kind of electric car charge-discharge system based on electric energy router |
| CN110890845A (en) * | 2019-12-06 | 2020-03-17 | 中车大连电力牵引研发中心有限公司 | Cascade output current-sharing control method for power electronic transformer of high-speed rail train |
| CN111510007A (en) * | 2020-04-21 | 2020-08-07 | 中国科学院电工研究所 | Hybrid isolation type single-phase power electronic transformer |
| CN111711347A (en) * | 2020-05-22 | 2020-09-25 | 国网江苏省电力有限公司电力科学研究院 | Hybrid isolation type power electronic transformer |
| CN112953254A (en) * | 2021-03-29 | 2021-06-11 | 山东电工电气集团有限公司 | Three-phase power electronic transformer topology and control method thereof |
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| CN104836456A (en) * | 2015-05-26 | 2015-08-12 | 苏州优电电气技术有限公司 | Power electron transformer topology composition based on cascade multilevel |
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| CN104836456A (en) * | 2015-05-26 | 2015-08-12 | 苏州优电电气技术有限公司 | Power electron transformer topology composition based on cascade multilevel |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109921653A (en) * | 2019-03-21 | 2019-06-21 | 中南大学 | A kind of Monophase electric power electronic transformer topological structure and its control method |
| CN110254266A (en) * | 2019-07-10 | 2019-09-20 | 上海交通大学 | A kind of electric car charge-discharge system based on electric energy router |
| CN110890845A (en) * | 2019-12-06 | 2020-03-17 | 中车大连电力牵引研发中心有限公司 | Cascade output current-sharing control method for power electronic transformer of high-speed rail train |
| CN110890845B (en) * | 2019-12-06 | 2022-05-20 | 中车大连电力牵引研发中心有限公司 | Cascade output current-sharing control method for power electronic transformer of high-speed rail train |
| CN111510007A (en) * | 2020-04-21 | 2020-08-07 | 中国科学院电工研究所 | Hybrid isolation type single-phase power electronic transformer |
| CN111711347A (en) * | 2020-05-22 | 2020-09-25 | 国网江苏省电力有限公司电力科学研究院 | Hybrid isolation type power electronic transformer |
| CN112953254A (en) * | 2021-03-29 | 2021-06-11 | 山东电工电气集团有限公司 | Three-phase power electronic transformer topology and control method thereof |
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Application publication date: 20181120 |