CN108494265A - One kind is based on common mode reactor multiple-variable flow device wired in parallel topology - Google Patents
One kind is based on common mode reactor multiple-variable flow device wired in parallel topology Download PDFInfo
- Publication number
- CN108494265A CN108494265A CN201810424095.8A CN201810424095A CN108494265A CN 108494265 A CN108494265 A CN 108494265A CN 201810424095 A CN201810424095 A CN 201810424095A CN 108494265 A CN108494265 A CN 108494265A
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- CN
- China
- Prior art keywords
- common mode
- inductance
- filter
- pwm
- variable flow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
-
- 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
- H02M1/126—Arrangements for reducing harmonics from ac input or output using passive filters
-
- 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
- H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
- Rectifiers (AREA)
Abstract
The present invention provides one kind based on common mode reactor multiple-variable flow device wired in parallel topology, including several sets converter module in parallel, include PWM rectifier and PWM inverter in the converter module, and the filter of the filter and PWM inverter output end of PWM rectifier front end, each converter module PWM inverter output inductor uses three-phase common mode inductance, the ac input end of several set converter modules is directly linked together while being connected to grid side, the ac output end of several set converter modules is directly linked together while being connected to motor side.The present invention enables to effectively to realize AC-DC-AC converter simple system and quickly in parallel, to effectively extend power system capacity, while being conducive to modularized production.
Description
Technical field
The invention belongs to circuit topology technical fields, and common mode reactor multiple-variable flow device module is based on simultaneously more particularly, to one kind
Connection topology.
Background technology
Due to the development reasons of semiconductor devices, the device of single large capacity does not come out, and causes to need in the market big
Power converter can not directly be designed by the device of large capacity.The current transformer of large capacity currently on the market is designed with
Several thinkings below：1) large capacity device is gone out by the semiconductor switch device parallel connection of low capacity；2) partly leading by low capacity
Body device designs the inverter of low capacity, then is formed in parallel by the mode of inverter common bus；3) partly leading by low capacity
Body device by after isolating transformer using forming high-power converter in parallel or in series.
For in thinking mentioned above, the first is direct by the semiconductor switch device of low capacity and is unified into large capacity
Device, due to parallel-connection structure, the reasons such as stray inductance are unable to reach the capacity requirement of satisfaction；Pass through inverter common bus second
In parallel form, control is relatively difficult due to the circulation circuit of inverter is shorter etc., although the side of shared PWM may be used
Formula solves, but is the increase in system parallel connection difficulty；The third forms great power conversion circuit in parallel or in series by way of isolation
Device cost is higher, and system complexity increases after increasing isolation.
What the technical program proposed the problems in can effectively take into account above-mentioned advantage, while solve said program.
Invention content
In view of this, the present invention is directed to propose a kind of being based on common mode reactor multiple-variable flow device wired in parallel topology, to solve
The problem of being mentioned in above-mentioned background technology inhibits circulation.
In order to achieve the above objectives, the technical proposal of the invention is realized in this way：
One kind including the converter module of several set parallel connections, institute based on common mode reactor multiple-variable flow device wired in parallel topology
The filter and PWM inverter stated comprising PWM rectifier and PWM inverter and PWM rectifier front end in converter module are defeated
The filter of outlet, each converter module PWM inverter output inductor use three-phase common mode inductance, several sets to become
The ac input end of stream device module is directly linked together while being connected to grid side, the exchange of several set converter modules
Output end is directly linked together while being connected to motor side.
Further, the PWM inverter output end filter inductance of each converter module uses common mode inductance, common mode inductance
In include two parts parameter, common mode inductance and differential mode leakage inductance, wherein common mode inductance for zero-sequence current generate impedance, differential mode leakage inductance
Part is inverter output inductor parameter.
Further, each converter module independent detection electric current, information of voltage, and complete independently PWM rectifier and
The control of PWM inverter.
Further, each converter module is directly linked together by the filter exchange input of PWM rectifier.
Further, the exchange end of the output filter of the PWM inverter links together.
Compared with the existing technology, of the present invention a kind of based on independent busbar AC-DC-AC converter wired in parallel topology tool
There is following advantage：
The present invention enables to effectively to realize AC-DC-AC converter simple system and quickly in parallel, to effectively extend
Power system capacity, while being conducive to modularized production；
The present invention is logical due to the zero sequence impedance of PWM inverter output filter in circuit, so the zero sequence in circuit
Circulation is effectively inhibited.
Description of the drawings
The attached drawing for constituting the part of the present invention is used to provide further understanding of the present invention, schematic reality of the invention
Example and its explanation are applied for explaining the present invention, is not constituted improper limitations of the present invention.In the accompanying drawings：
Fig. 1 is the topological schematic diagram in parallel of the multiple-variable flow device described in the embodiment of the present invention；
Fig. 2 is the three-phase common-mode filter schematic diagram described in the embodiment of the present invention；
Fig. 3 is the closed loop flow path schematic diagram described in the embodiment of the present invention.
Specific implementation mode
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
In the description of the present invention, it is to be understood that, term "center", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description of the present invention and simplification of the description, rather than instruction or dark
Show that signified device or element must have a particular orientation, with specific azimuth configuration and operation, therefore should not be understood as pair
The limitation of the present invention.In addition, term " first ", " second " etc. are used for description purposes only, it is not understood to indicate or imply phase
To importance or implicitly indicate the quantity of indicated technical characteristic.The feature for defining " first ", " second " etc. as a result, can
To express or implicitly include one or more this feature.In the description of the present invention, unless otherwise indicated, " multiple "
It is meant that two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
Can also be electrical connection to be mechanical connection；It can be directly connected, can also indirectly connected through an intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood by concrete condition
Concrete meaning in the present invention.
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
Include PWM rectifier in converter module as shown in Figure 1, including multiple AC-DC-AC converter modules in this topology
And the filter of the filter and PWM inverter output end of PWM inverter and PWM rectifier front end.Each hand over straight alternating flow
Device module PWM inverter output inductor uses three-phase common mode inductance；
The DC side of multiple AC-DC-AC converter modules is independent of each other, and the ac input end of PWM rectifier is straight
It is connected together in succession, the ac output end of PWM inverter is also to be directly linked together.
Every AC-DC-AC converter module has oneself completely self-contained current control, independent DC bus-bar voltage control
System and completely self-contained output power etc..
Every sub- converter module independent detection electric current, the information such as voltage, and complete independently PWM rectifier and PWM are inverse
Become the control of device；
Each sub- converter module in the technical program is connected directly between by the filter exchange input of PWM rectifier
Together, the exchange end of the output filter of PWM inverter links together, and the DC side of each sub- converter module is mutually solely
Vertical.
As shown in Fig. 2, the PWM inverter output end filter inductance of each sub- converter module in the technical program uses
Common mode inductance, includes two parts parameter, common mode inductance and differential mode leakage inductance in common mode inductance, and wherein common mode inductance is directed to zero-sequence current
Impedance is generated, differential mode leakage inductance part is inverter output inductor parameter.
As shown in figure 3, since DC bus is independent from each other in the technical program, so the circulation of converter module is logical
Road is all filters needed by two estrade converter modules, due to the zero sequence of PWM inverter output filter in circuit
Impedance reason, so the zero sequence circulation in circuit is effectively inhibited.
It enables to effectively realize that AC-DC-AC converter module is simple and quickly in parallel in a manner of upper topology, to effectively
Extend power system capacity, while being conducive to modularized production.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (5)
1. one kind is based on common mode reactor multiple-variable flow device wired in parallel topology, it is characterised in that：Including several sets unsteady flow in parallel
Device module, in the converter module comprising PWM rectifier and the filter of PWM inverter and PWM rectifier front end and
The filter of PWM inverter output end, each converter module PWM inverter output inductor use three-phase common mode inductance,
The ac input end of several set converter modules is directly linked together while being connected to grid side, several set unsteady flows
The ac output end of device module is directly linked together while being connected to motor side.
2. according to claim 1 a kind of based on common mode reactor multiple-variable flow device wired in parallel topology, it is characterised in that：Often
The PWM inverter output end filter inductance of a converter module uses common mode inductance, includes two parts parameter in common mode inductance, altogether
Mould inductance and differential mode leakage inductance, wherein common mode inductance generate impedance for zero-sequence current, and differential mode leakage inductance part is inverter output filter
Wave inductance parameters.
3. according to claim 1 a kind of based on common mode reactor multiple-variable flow device wired in parallel topology, it is characterised in that：Often
A converter module independent detection electric current, information of voltage, and the control of complete independently PWM rectifier and PWM inverter.
4. according to claim 1 a kind of based on common mode reactor multiple-variable flow device wired in parallel topology, it is characterised in that：Respectively
A converter module is directly linked together by the filter exchange input of PWM rectifier.
5. according to claim 1 a kind of based on common mode reactor multiple-variable flow device wired in parallel topology, it is characterised in that：Institute
The exchange end for stating the output filter of PWM inverter links together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810424095.8A CN108494265A (en) | 2018-05-07 | 2018-05-07 | One kind is based on common mode reactor multiple-variable flow device wired in parallel topology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810424095.8A CN108494265A (en) | 2018-05-07 | 2018-05-07 | One kind is based on common mode reactor multiple-variable flow device wired in parallel topology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108494265A true CN108494265A (en) | 2018-09-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201810424095.8A Pending CN108494265A (en) | 2018-05-07 | 2018-05-07 | One kind is based on common mode reactor multiple-variable flow device wired in parallel topology |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101621208A (en) * | 2008-06-30 | 2010-01-06 | 通用电气公司 | Wind turbine with parallel converters utilizing a plurality of isolated generator windings |
| CN101924374A (en) * | 2009-06-12 | 2010-12-22 | 通用电气公司 | Be used to operate the method and system of wind turbine power converter |
| CN203398998U (en) * | 2013-05-13 | 2014-01-15 | 大连普传科技股份有限公司 | Vector frequency converter |
-
2018
- 2018-05-07 CN CN201810424095.8A patent/CN108494265A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101621208A (en) * | 2008-06-30 | 2010-01-06 | 通用电气公司 | Wind turbine with parallel converters utilizing a plurality of isolated generator windings |
| CN101924374A (en) * | 2009-06-12 | 2010-12-22 | 通用电气公司 | Be used to operate the method and system of wind turbine power converter |
| CN203398998U (en) * | 2013-05-13 | 2014-01-15 | 大连普传科技股份有限公司 | Vector frequency converter |
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Application publication date: 20180904 |