CN207869010U - A kind of T-type inverter and photovoltaic parallel in system - Google Patents
A kind of T-type inverter and photovoltaic parallel in system Download PDFInfo
- Publication number
- CN207869010U CN207869010U CN201820161697.4U CN201820161697U CN207869010U CN 207869010 U CN207869010 U CN 207869010U CN 201820161697 U CN201820161697 U CN 201820161697U CN 207869010 U CN207869010 U CN 207869010U
- Authority
- CN
- China
- Prior art keywords
- branch
- redundancy
- igbt
- type
- type inverter
- 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.)
- Expired - Fee Related
Links
- 238000001514 detection method Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 6
- 239000013598 vector Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
Classifications
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
Landscapes
- Inverter Devices (AREA)
Abstract
This application discloses a kind of T-type inverters, including：First capacitance, the second capacitance, three T-type bridge arms and the redundancy branch for replacing fault branch in the T-type bridge arm.When the branch of the corresponding T-type bridge arm of redundancy branch breaks down, stops branch work and disconnected branches switch, redundancy branch is accessed in operating circuit to the branch for replacing failure, makes T-type inverter that can still work normally.The utility model switches over fault branch, has ensured that inverter and entire photovoltaic parallel in system can be run to normal table, and alternative highly effective, and inverter and photovoltaic parallel in system is made to have high reliability and high security.Disclosed herein as well is a kind of photovoltaic parallel in system with corresponding advantageous effect.
Description
Technical field
The utility model is related to field of photovoltaic power generation, more particularly to a kind of T-type inverter and photovoltaic parallel in system.
Background technology
Solar energy is a kind of sustainable free of contamination green clean energy resource, and people have developed various photovoltaic generations
System realizes the collection and utilization to solar energy.Due to the fragile delicate characteristic of electronic device so that inverter becomes photovoltaic
The weak link to break down is easier in system.Once inverter breaks down, entire photovoltaic system can lose normal work energy
Power causes power supply system unstable, brings the inconvenience of life production.Therefore the fault-toleranr technique and redundancy of inverter are studied
Design, avoids the photovoltaic system caused by failure out of service for a long time, has important practical significance.
For the prior art mainly to three level diode clamp bit-types, also known as NPC types inverter carries out Redundancy Design.First study
The missing of vector can occur for the redundancy in terms of vector, when a failure occurs it, NPC types inverter, need with other Vector modulations
The vector of missing, included redundant vectors itself can also directly utilize redundant vectors.Then utilize redundancy bridge arm to failure bridge
Arm switches over.
As technology develops, NPC types inverter is substituted by novel T-type inverter step by step.T-type inverter
Structural topology figure is shown in Figure 1, generally comprises the first capacitance C1, the second capacitance C2 and three T-type bridge arms, each T-type bridge arm
Include the first branch, the second branch and third branch, the first branch and third branch include that an IGBT is managed, the second branch
Including the opposite series IGBT pipe of two current directions.Wherein, three T-type bridge arms are respectively the first bridge arm, the second bridge arm and
Three bridge arms；On first bridge arm, the first branch includes IGBT pipe Sa1, and the second branch includes IGBT pipe Sa2 and Sa3, third branch packet
IGBT pipe Sa4 are included, branch common point draws A phase voltages；On second bridge arm, the first branch includes IGBT pipe Sb1, the second branch packet
IGBT pipe Sb2 and Sb3 are included, third branch includes IGBT pipe Sb4, and branch common point draws B phase voltages；On third bridge arm, first
Branch includes IGBT pipe Sc1, and the second branch includes IGBT pipe Sc2 and Sc3, and third branch includes IGBT pipe Sc4, branch common point
Draw C phase voltages.
Connection circuit in wherein each T-type bridge arm is as follows：
The first end of the first branch and the first end of the first capacitance C1 are connected to the first common point；The first end of the second branch
It is connected to the second common point with the second end of the first capacitance C1, the first end of the second capacitance C2；The first end of third branch and the
The second end of two capacitance C2 is connected to third common point；The second end of the first branch, the second end of the second branch and third branch
Second end be connected to where T-type bridge arm branch common point.
Currently, for the T-type inverter newly risen, there are no relevant Redundancy Designs.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of T-type inverter with Redundancy Design and a kind of light
Lie prostrate grid-connected system.Its concrete scheme is as follows：
A kind of T-type inverter, including：First capacitance, the second capacitance, three T-type bridge arms and for replacing the T-type bridge arm
The redundancy branch of middle fault branch.
Preferably, the redundancy branch includes switch and IGBT units corresponding with the switch.
Preferably, the redundancy branch includes the IGBT unit that multiple switches and multiple switches share.
Preferably, the T-type inverter includes multiple redundancy branches.
Preferably, multiple redundancy branches include：
Any number of first redundancy branch and/or any number of second redundancy branch and/or any number of third
Redundancy branch；
Wherein, the structure of the first redundancy branch corresponds to the first branch of the T-type bridge arm, the second redundancy branch
Structure correspond to the second branch of the T-type bridge arm, the structure of the third redundancy branch corresponds to the third branch of the T-type bridge arm
Road.
Preferably, the first branch includes concatenated branch switch and IGBT pipes, and the first redundancy branch includes the
One redundancy IGBT units and three the first Redundanter schalters, the first redundancy IGBT units include an IGBT pipe, wherein：
The first end of the first redundancy IGBT units is connected with the first common point of the T-type inverter, and described first
The second end of redundancy IGBT units is connected with the first end of three first Redundanter schalters respectively, and three first redundancies are opened
The second end of pass is connected one by one respectively with the branch common point of three T-type bridge arms.
Preferably, the second branch includes that concatenated branch switch, the first IGBT pipes and the 2nd IGBT are managed, and described second
Redundancy branch includes the second redundancy IGBT units and three the second Redundanter schalters, and the 2nd IGBT redundancy units include two strings
The IGBT of connection is managed, wherein：
The first end of the second redundancy IGBT units is connected with the second common point of the T-type inverter, and described second
The second end of redundancy IGBT units is connected with the first end of three second Redundanter schalters respectively, and three second redundancies are opened
The second end of pass is connected one by one respectively with the branch common point of three T-type bridge arms.
Preferably, the third branch includes concatenated branch switch and IGBT pipes, and the third redundancy branch includes the
Triple redundance IGBT units and three third Redundanter schalters, the third redundancy IGBT units include an IGBT pipe, wherein：
The first end of the third redundancy IGBT units is connected with the third common point of the T-type inverter, the third
The second end of redundancy IGBT units is connected with the first end of three third Redundanter schalters respectively, and three third redundancies are opened
The second end of pass is connected one by one respectively with the branch common point of three T-type bridge arms.
Preferably, the T-type inverter further includes the fault detection circuit for detecting three T-type bridge arms.
Correspondingly, the invention also discloses a kind of photovoltaic parallel in system, including T-type inverter as noted before.
The utility model discloses a kind of T-type inverters, including：First capacitance, the second capacitance, three T-type bridge arms and use
In the redundancy branch for replacing fault branch in the T-type bridge arm.When the branch of the corresponding T-type bridge arm of redundancy branch breaks down
When, stop branch work and disconnected branches switch, redundancy branch is accessed in operating circuit to the branch for replacing failure, makes T-type
Inverter can still work normally.The utility model switches over fault branch, has ensured inverter and entire grid-connected
System can be run to normal table, and alternative highly effective, so that inverter and photovoltaic parallel in system is had highly reliable
Property and high security.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is the embodiments of the present invention, for those of ordinary skill in the art, without creative efforts, also
Other attached drawings can be obtained according to the attached drawing of offer.
Fig. 1 is the structural topology figure of T-type inverter in the prior art；
Fig. 2 is a kind of exemplary construction topological diagram of redundancy branch in the utility model embodiment；
Fig. 3 is the exemplary construction topological diagram of another redundancy branch in the utility model embodiment；
Fig. 4 is a kind of structural topology figure of specific T-type inverter in the utility model embodiment；
Fig. 5 a are a kind of work structuring topological diagram of T-type inverter in the utility model embodiment；
Fig. 5 b are a kind of work structuring topological diagram of T-type inverter in the utility model embodiment；
Fig. 5 c are a kind of work structuring topological diagram of T-type inverter in the utility model embodiment.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
The utility model embodiment discloses a kind of T-type inverter, including：First capacitance, the second capacitance, three T-type bridges
Arm and redundancy branch for replacing fault branch in the T-type bridge arm.
It is understood that when certain branch of the corresponding T-type bridge arm of redundancy branch breaks down, which is disconnected,
Access redundancy branch makes T-type inverter that can still work normally, so in redundancy branch and corresponding interchangeable fault branch,
All there is identical work IGBT units and the switch for cutting off, accessing circuit.Once specifically, the branch event of T-type bridge arm
Barrier, disconnects the switch of fault branch, the IGBT units of fault branch is made to be stopped, and closes the switch of redundancy branch, makes redundancy
The IGBT units of branch replace the IGBT cell operations of fault branch.Wherein, IGBT units here refer to the of T-type bridge arm
The IGBT switch sections of one branch, the second branch or third branch.Specifically, using the work step and failure branch of redundancy branch
The original step in road is identical.
The corresponding fault branch of one redundancy branch can be a certain branch of a certain T-type bridge arm, such as setting redundancy branch
Road is only used for replacing in first T-type bridge arm first branch failure, circuit structure and the first branch phase of this redundancy branch
Together, and redundancy branch is in parallel with the first branch, referring to Fig. 2；Can also be the same class branch of N number of T-type bridge arm, N is 2 or 3,
The first end of i.e. N number of first branch, the second branch or third branch, this N number of branch is all connected to same common point, the common point
Second end for the first common point, the second common point or third common point, this N number of branch is connected to respectively affiliated T-type bridge
It can be replaced on the branch common point of arm, such as in three T-type bridge arms of setting when the first branch failure of any bridge arm superfluous
Remaining branch, or the redundancy branch that can be replaced when the second branch failure of any bridge arm in certain two T-type bridge arm is set.
Specifically, for fault branch be N number of T-type bridge arm same class branch the case where, redundancy branch there are two types of design
Thinking：
It is a kind of similar for a certain a certain branch of T-type bridge arm with fault branch, it can also regard N number of superfluous in a thinking as
The superposition of remaining branch.Redundancy branch includes N branch circuit, connected on every branch circuit a Redundanter schalter and one it is superfluous
The first end of remaining IGBT units, every branch circuit is all connected to the first end of fault branch, the second end point of N branch circuit
It is not connected one by one with the branch common point of above-mentioned N number of T-type bridge arm, shown in Figure 3, Fig. 3 is two after being replaced in this thinking
The schematic diagram of the redundancy branch of the first branch of a T-type bridge arm；
Another redundancy branch is total separation structure, and redundancy branch includes one that N number of Redundanter schalter and N number of Redundanter schalter share
A redundancy IGBT units；The first end of redundancy IGBT units is connected to the common common point of fault branch, second end and above-mentioned N
The first end of a Redundanter schalter is connected, the second end of the above-mentioned N number of Redundanter schalter branch common point one with N number of T-type bridge arm respectively
One is connected.Shown in Figure 4, Fig. 4 is the signal of the redundancy branch for the third branch that three T-type bridge arms can be replaced in this thinking
Figure.As can be seen that compared with a upper thinking, the redundancy IGBT units used in this thinking significantly reduce, and reduce making for element
With cost, there is higher practicability.
It is understood that the citing of the above-mentioned fault branch used when illustrating idea and method, not to this method reality
The limitation of example is applied, this field staff can be according to actual conditions and equipment component parameters come the default branch that may be broken down
Corresponding redundancy branch is further designed on road.
Further, above-mentioned T-type inverter may include multiple redundancy branches.
Specifically, multiple redundancy branches here can correspond to the same branch of the same T-type bridge arm, can also correspond to more
The same class branch of a T-type bridge arm can also correspond to the inhomogeneity branch of multiple T-type bridge arms.
Preferably, multiple redundancy branches include：
Any number of first redundancy branch and/or any number of second redundancy branch and/or any number of third
Redundancy branch；
Wherein, the structure of the first redundancy branch corresponds to the first branch of the T-type bridge arm, the second redundancy branch
Structure correspond to the second branch of the T-type bridge arm, the structure of the third redundancy branch corresponds to the third branch of the T-type bridge arm
Road.
It is understood that the design of redundancy branch is to ensure T-type inverter functional reliability and safety, it is different
The quantity of redundancy branch determined by the extent of deterioration and actual parameter of each class component of T-type inverter internal.
Further, the T-type inverter further includes the fault detection circuit for detecting three T-type bridge arms.
It is understood that obtaining fault message by fault detection circuit, system is according to the fault message, failure judgement
Position, and carry out corresponding failure removal and access the measure of redundancy branch.
The utility model embodiment discloses a kind of T-type inverter, including：First capacitance, the second capacitance, three T-type bridges
Arm and redundancy branch for replacing fault branch in the T-type bridge arm.When the branch of the corresponding T-type bridge arm of redundancy branch occurs
When failure, stops branch work and disconnected branches switch, redundancy branch is accessed in operating circuit to the branch for replacing failure, is made
T-type inverter can still work normally.The utility model switches over fault branch, has ensured inverter and entire photovoltaic simultaneously
Net system can be run to normal table, and alternative highly effective, and inverter and photovoltaic parallel in system is made to have height can
By property and high security.
The utility model embodiment discloses a kind of specific T-type inverter, relative to a upper embodiment, the present embodiment pair
Technical solution has made further instruction and optimization.Shown in Fig. 4, including the first capacitance C1, the second capacitance C2, three
A T-type bridge arm, these three T-type bridge arms are respectively the first bridge arm, the second bridge arm and third bridge arm.
Multiple redundancy branches in the present embodiment are total separation structure, and multiple redundancy branches include a first redundancy branch
Road, a second redundancy branch and a third redundancy branch.
Specifically, the first branch includes concatenated branch switch and IGBT pipes, the first branch of three T-type bridge arms
In, branch switch is respectively sa1, sb1 and sc1, and IGBT pipes are respectively va1, vb1 and vc1, and the first redundancy branch includes the
One redundancy IGBT units and three first Redundanter schalters wa1, wb1 and wc1, the first redundancy IGBT units include an IGBT
Pipe vd1, wherein：
The first end of the first redundancy IGBT units is connected with the first common point of the T-type inverter, and described first
The second end of redundancy IGBT units is connected with the first end of three first Redundanter schalters, three first Redundanter schalters
Second end is connected one by one respectively with the branch common point of three T-type bridge arms.
It should be noted that concatenated branch switch and IGBT manage no specific sequencing in the first branch, hereafter
Middle the second branch and third branch do not limit internal series element sequence equally.
Similar, the second branch includes concatenated branch switch, the first IGBT pipes and the 2nd IGBT pipes, three T-types
In the second branch of bridge arm, branch switch is respectively that branch switch is respectively sa2, sb2 and sc2, and the first IGBT pipes are respectively
Va2, vb2 and vc2, the 2nd IGBT pipes are respectively va3, vb3 and vc3, and the second redundancy branch includes the second redundancy IGBT mono-
Member and three second Redundanter schalters wa2, wb2 and wc2, the 2nd IGBT redundancy units include two concatenated IGBT pipes vd2
And vd3, wherein：
The first end of the second redundancy IGBT units is connected with the second common point of the T-type inverter, and described second
The second end of redundancy IGBT units is connected with the first end of three second Redundanter schalters, three second Redundanter schalters
Second end is connected one by one respectively with the branch common point of three T-type bridge arms.
The particular order of concatenated two IGBT pipes is not required limitation in the 2nd IGBT redundancy units.
In addition, for the second redundancy branch, after can the second redundancy IGBT units being split into two IGBT pipes, certain is had altogether
IGBT pipes replace with three IGBT being connected on Redundanter schalter pipes.Certainly, the extension of redundancy branch change is required to
It is carried out on the basis of component parameters are supported and actual cost meets.
Similar, the third branch includes concatenated branch switch and IGBT pipes, the third branch of three T-type bridge arms
In, branch switch is respectively sa3, sb3 and sc3, and IGBT pipes are respectively va4, vb4 and vc4, and the third redundancy branch includes the
Triple redundance IGBT units and three third Redundanter schalters wa3, wb3 and wc3, the third redundancy IGBT units include an IGBT
Pipe vd4, wherein：
The first end of the third redundancy IGBT units is connected with the third common point of the T-type inverter, the third
The second end of redundancy IGBT units is connected with the first end of three third Redundanter schalters, three third Redundanter schalters
Second end is connected one by one respectively with the branch common point of three T-type bridge arms.
In the present embodiment, any element of T-type inverter breaks down, and can be switched to its corresponding fault branch can
The redundancy branch of normal work, protection is very comprehensive, and the IGBT pipes used in the present embodiment are few, is ensureing that inverter is steady
Device cost is greatly saved while qualitative；The present embodiment can also replace the faulty component of inhomogeneity branch, example simultaneously
Such as some first branch and some the second branch simultaneous faults, the present embodiment can meet the replacement of two fault branches and normal
Operation.
Specifically, by taking the first bridge arm as an example, different failures is switched over.
When detecting IGBT pipe va1 failures, switch sa1 is disconnected, va1 is isolated, vd1 is accessed T-type inversion by closure switch wa1
Replace the IGBT pipes va1 of failure, the work structuring figure of replaced T-type inverter as shown in Figure 5 a in device.
When detecting IGBT pipe va2 or va3 failures, switch sa2 is disconnected, isolation va2 and va3, closure switch wa2 are by vd2
The IGBT pipe va2 or va3 that replace failure is accessed with vd3 in T-type inverter, and the work structuring figure of replaced T-type inverter is such as
Shown in Fig. 5 b.
When detecting IGBT pipe va4 failures, switch sa3 is disconnected, va4 is isolated, vd4 is accessed T-type inversion by closure switch wa3
Replace the IGBT pipes va4 of failure, the work structuring figure of replaced T-type inverter as shown in Figure 5 c in device.
But the present embodiment can not protect the scene of same class branch trouble on multiple bridge arms, such as va1 and vb1 are simultaneously
When failure, vd1 can only substitute one in va1 and vb1, and entire T-type inverter cannot be made to work normally.As preferred implementation
Example can be directed to the weak part of inverter, the redundancy branch of same type in parallel, to ensure same class branch trouble on more bridge arms
The case where.
Correspondingly, the utility model embodiment also discloses a kind of photovoltaic parallel in system, including T-type as noted before is inverse
Become device.
Wherein, the detail in relation to photovoltaic parallel in system can refer to the embodiment description of above T-type inverter, this
Place repeats no more.
It is understood that above-mentioned photovoltaic parallel in system has advantageous effect identical with T-type inverter.
The foregoing description of the disclosed embodiments enables those skilled in the art to realize or use the utility model.
Various modifications to these embodiments will be apparent for a person skilled in the art, general original as defined herein
Reason can be realized in other embodiments without departing from the spirit or scope of the present utility model.Therefore, this practicality is new
Type is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase
Consistent widest range.
Claims (10)
1. a kind of T-type inverter, which is characterized in that including：First capacitance, the second capacitance, three T-type bridge arms and for replacing
State the redundancy branch of fault branch in T-type bridge arm.
2. T-type inverter according to claim 1, which is characterized in that the redundancy branch include switch and with the switch
Corresponding IGBT units.
3. T-type inverter according to claim 2, which is characterized in that the redundancy branch include it is multiple it is described switch and it is more
A shared IGBT unit of a switch.
4. T-type inverter according to claim 3, which is characterized in that including multiple redundancy branches.
5. T-type inverter according to claim 4, which is characterized in that multiple redundancy branches include：
Any number of first redundancy branch and/or any number of second redundancy branch and/or any number of third redundancy
Branch；
Wherein, the structure of the first redundancy branch corresponds to the first branch of the T-type bridge arm, the knot of the second redundancy branch
Structure corresponds to the second branch of the T-type bridge arm, and the structure of the third redundancy branch corresponds to the third branch of the T-type bridge arm.
6. T-type inverter according to claim 5, which is characterized in that the first branch include concatenated branch switch and
IGBT is managed, and the first redundancy branch includes the first redundancy IGBT units and three the first Redundanter schalters, first redundancy
IGBT units include an IGBT pipe, wherein：
The first end of the first redundancy IGBT units is connected with the first common point of the T-type inverter, first redundancy
The second end of IGBT units is connected with the first end of three first Redundanter schalters respectively, three first Redundanter schalters
Second end is connected one by one respectively with the branch common point of three T-type bridge arms.
7. T-type inverter according to claim 5, which is characterized in that the second branch includes concatenated branch switch,
One IGBT is managed and the 2nd IGBT pipes, the second redundancy branch include the second redundancy IGBT units and three the second Redundanter schalters,
The 2nd IGBT redundancy units include two concatenated IGBT pipes, wherein：
The first end of the second redundancy IGBT units is connected with the second common point of the T-type inverter, second redundancy
The second end of IGBT units is connected with the first end of three second Redundanter schalters respectively, three second Redundanter schalters
Second end is connected one by one respectively with the branch common point of three T-type bridge arms.
8. T-type inverter according to claim 5, which is characterized in that the third branch include concatenated branch switch and
IGBT is managed, and the third redundancy branch includes third redundancy IGBT units and three third Redundanter schalters, the third redundancy
IGBT units include an IGBT pipe, wherein：
The first end of the third redundancy IGBT units is connected with the third common point of the T-type inverter, the third redundancy
The second end of IGBT units is connected with the first end of three third Redundanter schalters respectively, three third Redundanter schalters
Second end is connected one by one respectively with the branch common point of three T-type bridge arms.
9. according to any one of claim 1 to the 8 T-type inverter, which is characterized in that further include for detecting three T
The fault detection circuit of type bridge arm.
10. a kind of photovoltaic parallel in system, which is characterized in that including the T-type inverter as described in any one of claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820161697.4U CN207869010U (en) | 2018-01-30 | 2018-01-30 | A kind of T-type inverter and photovoltaic parallel in system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820161697.4U CN207869010U (en) | 2018-01-30 | 2018-01-30 | A kind of T-type inverter and photovoltaic parallel in system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207869010U true CN207869010U (en) | 2018-09-14 |
Family
ID=63459538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820161697.4U Expired - Fee Related CN207869010U (en) | 2018-01-30 | 2018-01-30 | A kind of T-type inverter and photovoltaic parallel in system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207869010U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114726244A (en) * | 2022-06-08 | 2022-07-08 | 锦浪科技股份有限公司 | Three-level system with fault tolerance function and control method |
-
2018
- 2018-01-30 CN CN201820161697.4U patent/CN207869010U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114726244A (en) * | 2022-06-08 | 2022-07-08 | 锦浪科技股份有限公司 | Three-level system with fault tolerance function and control method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102237672B (en) | System and method for protection of a multilevel converter | |
| CN102484430B (en) | Fault current limitation in DC transmission system | |
| CN103107689A (en) | Cascading transducer and power unit and bypass module of power unit | |
| CN103986342B (en) | A kind of power electronics inverter that can remove bi-directional failure electric current and control method | |
| CN105656198B (en) | A kind of acquisition methods of powerline network redundant path strategy | |
| CN106569015B (en) | AC load detection circuit | |
| CN106130056B (en) | Flexible HVDC transmission system based on combined modular Multilevel Inverters | |
| CN102353896A (en) | Switching device failure detection system and method for multilevel converters | |
| WO2018052067A1 (en) | Dc power transmission system | |
| CN107508481B (en) | A kind of fault-tolerant inversion system of two-phase and its control method | |
| CN105680409A (en) | Bridge circuit, direct current disjunction device and control method thereof | |
| CN108599099B (en) | A kind of multi-line dc circuit breaker and cutoff method | |
| CN105140894A (en) | Phase difference principle based power distribution network differential protection method | |
| CN107359644A (en) | A kind of microgrid interface topology apparatus | |
| CN104901410A (en) | UPS circuit | |
| CN106841899B (en) | The device open-circuit fault diagnostic method and device of the synchronous series compensator of chain static | |
| CN207869010U (en) | A kind of T-type inverter and photovoltaic parallel in system | |
| WO2021159873A1 (en) | Bidirectional energy balance converter chain, electric energy router, and control method | |
| CN107910886A (en) | A kind of submodule topological structure and method for flexible direct current transmission converter valve | |
| CN109581085A (en) | A kind of collection electric wire and fault of interconnected transmission line discriminating direction method | |
| CN108471108B (en) | Micro-capacitance sensor determination method based on positive sequence fault component electric current | |
| CN109039132A (en) | A kind of close power amplifier circuit of seven bridge arms, the five phase output with failure tolerance | |
| US20230421076A1 (en) | Fault-tolerant dc-ac electric power conversion device | |
| CN205647264U (en) | Three level submodule pieces of MMC with direct current short -circuit current is from scavenging ability | |
| CN107749615B (en) | It is a kind of based on the dc circuit breaker for sealing in capacitor and its DC Line Fault processing strategie |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180914 |