CN209593007U - A kind of topological structure of the isolated power inverter of distribution of driving AC load - Google Patents
A kind of topological structure of the isolated power inverter of distribution of driving AC load Download PDFInfo
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- CN209593007U CN209593007U CN201920512501.6U CN201920512501U CN209593007U CN 209593007 U CN209593007 U CN 209593007U CN 201920512501 U CN201920512501 U CN 201920512501U CN 209593007 U CN209593007 U CN 209593007U
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Abstract
The utility model discloses a kind of topological structures of the isolated power inverter of distribution of driving AC load, the DC/AC direct-current-alternating-current converter powered including one by higher level's DC power supply, one isolated transformer and more than one AC/AC alternating current matrix converter, the output end of the DC/AC direct-current-alternating-current converter is connect with the primary side winding of isolated transformer, and the input terminal of each AC/AC alternating current matrix converter is connected with the vice-side winding of an isolated transformer, the output of each AC/AC alternating current matrix converter is connected with an independent AC load, realize that direct current energy first passes through DC/AC direct-current-alternating-current converter and is converted into alternating current, realize that alternating current is distributed to different AC/AC in a distributed manner to be handed over using isolated transformer Stream exchanges the topological structure that matrix converter is adjusted with is finally individually powered for each AC load after control.The utility model structure is simple, and isolation control securely and reliably is implemented separately to load, improves safety.
Description
Technical field
The utility model relates to a kind of technical field of electronic power converter, specially a kind of driving AC load
The isolated power inverter of distribution topological structure.
Background technique
Converters have in fields such as aviation, automobile, industry to be widely applied.It is mostly negative in traditional DC DC driven
In the system of load, the DC-AC(DC-AC of each AC load) power inverter is all commonly connected to same set of DC bus
On, a kind of this topological structure mainly has following disadvantage:
1, safety is lower, the power inverter of any load or any load break down (short circuit, burn) can lead to
Whole system burns, failure；
2, harmonic wave caused by the power inverter of system harmonics, any load or any load can be reacted in whole system
In, system harmonics are caused, while the harmonic wave of different loads can also be overlapped mutually under the efficiency for causing whole system with system harmonics
Drop；
3, when any load energy is fed back (such as motor brake generating state), the electric energy of feedback acts directly on DC bus
On, the power inverter of power supply and other loads is caused to impact, causes the damage of power supply and system；
4, pressure regulation is difficult, any load if desired voltage power supply different grades of with busbar voltage when, need to additionally increase tune
Volt circuit.
Summary of the invention
The purpose of this utility model is to provide a kind of topologys of the isolated power inverter of distribution of driving AC load
Structure, structure is simple, and safe and reliable novel electric power electric power converter topologies structure makes multi-load electric and electronic power
Changer system is safer in the application of the professional domains such as aviation, reliably.
To achieve the above object, the utility model provides the following technical solutions: a kind of distribution isolation driving AC load
The topological structure of formula power inverter, including a DC/AC direct-current-alternating-current converter powered by higher level's DC power supply, one
Isolated transformer and more than one AC/AC alternating current matrix converter, the DC/AC direct-current-alternating-current converter
Output end is connect with the primary side winding of isolated transformer, and the input terminal of each AC/AC alternating current matrix converter with
The output of one vice-side winding of the isolated transformer connects, the output of each AC/AC alternating current matrix converter
It is connected with an independent AC load, realizes that direct current energy first passes through DC/AC direct-current-alternating-current converter and is converted into alternating current,
Realize that alternating current is distributed to different AC/AC alternating current matrix converters in a distributed manner to carry out using isolated transformer
The topological structure for adjusting and after control, being finally individually powered for each AC load.
Preferably, the number of turns of each vice-side winding can be adjusted as needed.
Preferably, the DC/AC direct-current-alternating-current converter includes 6 power tubes, and the switch control of power tube is by upper
Layer control circuit provides.
Preferably, the power tube is IGBT or Mosfet or silicon carbide or gallium nitride power device.
Preferably, the AC/AC alternating current matrix converter includes 9 matrix dots, each matrix dot is by two
Power tube, which forms and connects two lines, realizes on or off.
Compared with prior art, the utility model by using be distributed isolated converters topological structure into
The transmission of row energy adjustment, finally has the advantage that
1, it respectively loads between subsystem and son load is mutually isolated with system power supply, when any load system breaks down
Other sub- load systems and system power supply may continue to work, and security of system improves；
2, since load subsystem and system power supply are mutually isolated, the harmonic wave generated in each sub- load system work will not be made
For its whole system, system power supply Quality advance system loss harmonic wave is reduced；
3, in sub- load system energy feedback, there is stronger regulatory function and robustness；
4, sub- load system voltage is adjustable, strong flexibility, the load suitable for different voltages grade.
Detailed description of the invention:
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 some embodiments of the present invention, for those of ordinary skill in the art, without creative efforts, also
Other drawings may be obtained according to these drawings without any creative labor.
Fig. 1 is whole for the topological structure for being distributed isolated power inverter for driving AC load a kind of in the present embodiment 1
Body structure principle chart；
Fig. 2 is the circuit diagram of DC/AC direct-current-alternating-current converter in the present embodiment 1；
Fig. 3 is the circuit diagram of AC/AC alternating current matrix converter and other peripheral circuits in the present embodiment 1.
In figure: DC/AC direct-current-alternating-current converter 1, primary side winding 1-1, vice-side winding 1-2, isolated transformer 2, AC/
AC alternating current matrix converter 3, AC load 4, power tube 7, ac input end 8, input filter 9, output filter 10,
Output loading 11.
Specific embodiment:
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
Every other embodiment obtained, fall within the protection scope of the utility model.
Fig. 1-3 is please referred to, the utility model is further described:
Embodiment 1:
As shown in Figure 1, a kind of topology of the isolated power inverter of distribution of driving AC load provided in this embodiment
Structure, 1, the isolated transformer 2 of DC/AC direct-current-alternating-current converter powered including one by higher level's DC power supply and
More than one AC/AC alternating current matrix converter 3, the output end of the DC/AC direct-current-alternating-current converter 1 with it is isolated
The primary side winding 1-1 connection of transformer 2, and the input terminal of each AC/AC alternating current matrix converter 3 with it is described isolated
The output of one vice-side winding 1-2 of transformer 2 connects, and the output of each AC/AC alternating current matrix converter 3 is connected with
One independent AC load 4 is realized that direct current energy first passes through DC/AC direct-current-alternating-current converter 1 and is converted into alternating current, then is passed through
It crosses isolated transformer 2 and realizes that alternating current is distributed to different AC/AC alternating current matrix converters 3 in a distributed manner to be adjusted
Section and the topological structure after control, being finally individually powered for each AC load 4.
Preferably, the number of turns of each vice-side winding 1-2 can be adjusted as needed.
As shown in Fig. 2, preferably, the DC/AC direct-current-alternating-current converter 1 includes 6 power tubes 7, and power tube 7
Switch control provided by top level control circuit.Preferably, the power tube 7 is IGBT or Mosfet or silicon carbide or nitrogen
Change gallium power device.The power tube 7 uses IGBT in the present embodiment.
As shown in figure 3, preferably, the AC/AC alternating current matrix converter 3 includes 9 matrix dots, Mei Geju
Lattice point, which is made of two power tubes 7 and connects two lines, realizes on or off, and the AC/AC exchange is handed in the present embodiment
It is one for connecting isolated transformer 2 that the input terminal of stream matrix converter 3, which connects ac input end 8 by input filter 9,
The output end of vice-side winding 1-2, the AC/AC alternating current matrix converter 3 are negative by the connection output of output filter 10
Carry 11 i.e. AC load 4；The AC/AC alternating current matrix converter 3, DC/AC DC-AC conversion in the present embodiment
The physical circuit of device 1 belongs to the ordinary skill in the art, so not specifically describing.
When work, DC current first passes through DC/AC direct-current-alternating-current converter 1 and is converted into suitable alternating current, then passes through
Isolated transformer 2 carry out it is distributed after signal isolation be sent to different vice-side winding 1-2, then by independent secondary side around
Group 1-2 give corresponding AC/AC alternating current matrix converter 3, carries out pair by AC/AC alternating current matrix converter 3
The alternating current of side winding 1-2 output is conveyed to the process of the alternating voltage of the needs of AC load 4 after being converted, therefore by upper
State structure design realize between each 4 subsystem of AC load and son load and system input power between carry out mutually every
From, it is ensured that other sub- load systems and system power supply can still work on when any 4 system jam of AC load,
Guarantee that the safety is improved for whole system, while the voltage of sub- load system can individually be adjusted, and finally guarantee flexibility
By force, the load suitable for different voltages grade.The son load described in the present embodiment is each independent AC load
4, the system power supply is the input power for inputting DC/AC direct-current-alternating-current converter 1.Described in the present embodiment is defeated
Enter filter 9, the physical circuit of output filter 10 is routine so not specifically describing.
The AC load 4 described in the present embodiment be assumed to be 2 or more multi-rotor unmanned aerial vehicle or more driving motors
Or compressor of air conditioner；Each multi-rotor unmanned aerial vehicle or driving motor or compressor of air conditioner are exchanged with each AC/AC at this time
The output end connection of matrix converter 3 is exchanged, and in order to be filtered to current signal, each multi-rotor unmanned aerial vehicle or driving
Connect the output filter 10 between motor or compressor of air conditioner and AC/AC alternating current matrix converter 3, when work,
There is provided using higher level's DC power supply by battery, be converted into alternating current first with DC/AC direct-current-alternating-current converter 1, then utilize every
After being isolated from formula transformer 2 to by AC/AC alternating current matrix converter 3 converted after to rotor more than each without
Man-machine or driving motor or compressor of air conditioner carry out independently-powered.
Embodiment 2:
The AC load 4 is assumed to be the new energy such as more electrically-driven compressors or steering engine actuating system in the present embodiment
Source automobile；The new-energy automobiles such as each electrically-driven compressors or steering engine actuating system are exchanged with each AC/AC at this time
The output end connection of matrix converter 3 is flowed, and in order to be filtered to current signal, each electrically-driven compressors or steering engine are made
Dynamic system etc. connects the output filter 10, work between new-energy automobiles and AC/AC alternating current matrix converter 3
When, higher level's DC power supply is provided by DC bus, is converted into alternating current first with DC/AC direct-current-alternating-current converter 1, then sharp
It is driven to after being converted by AC/AC alternating current matrix converter 3 to each electricity after being isolated with isolated transformer 2
The dynamic new-energy automobiles such as compressor or steering engine actuating system carry out independently-powered.
Compared with prior art, the present embodiment is carried out by using isolated converters topological structure is distributed
Energy adjustment transmission, finally has the advantage that
1, it respectively loads between subsystem and son load is mutually isolated with system power supply, when any load system breaks down
Other sub- load systems and system power supply may continue to work, and security of system improves；
2, since load subsystem and system power supply are mutually isolated, the harmonic wave generated in each sub- load system work will not be made
For its whole system, system power supply Quality advance system loss harmonic wave is reduced；
3, in sub- load system energy feedback, there is stronger regulatory function and robustness；
4, sub- load system voltage is adjustable, strong flexibility, the load suitable for different voltages grade.
Claims (6)
1. a kind of topological structure of the isolated power inverter of distribution of driving AC load, including one by higher level's DC power supply
The DC/AC direct-current-alternating-current converter (1) of power supply, an isolated transformer (2) and more than one AC/AC alternating current
Matrix converter (3), it is characterised in that: the output end of the DC/AC direct-current-alternating-current converter (1) and isolated transformer (2)
Primary side winding (1-1) connection, and the input terminal of each AC/AC alternating current matrix converter (3) and the isolated change
The output of one vice-side winding (1-2) of depressor (2) connects, and the output of each AC/AC alternating current matrix converter (3) connects
It is connected to an independent AC load (4), realizes that direct current energy first passes through DC/AC direct-current-alternating-current converter (1) and is converted into exchanging
Electricity is realized using isolated transformer (2) and alternating current is distributed to different AC/AC alternating current matrixings in a distributed manner
Device (3) be adjusted with after control, the topological structure that is finally individually powered for each AC load (4).
2. a kind of topological structure of the isolated power inverter of distribution of driving AC load according to claim 1,
It is characterized in that, the number of turns of each vice-side winding (1-2) can be adjusted as needed.
3. a kind of topological structure of the isolated power inverter of distribution of driving AC load according to claim 1 or 2,
It is characterized in that, the DC/AC direct-current-alternating-current converter (1) includes 6 power tubes (7), and the switch control of power tube (7)
It is provided by top level control circuit.
4. a kind of topological structure of the isolated power inverter of distribution of driving AC load according to claim 3,
It is characterized in that, the power tube (7) is IGBT or Mosfet or silicon carbide or gallium nitride power device.
5. a kind of topological structure of the isolated power inverter of distribution of driving AC load according to claim 1 or 2,
It is characterized in that, the AC/AC alternating current matrix converter (3) includes 9 matrix dots, each matrix dot is by two power
Pipe, which forms and connects two lines, realizes on or off.
6. a kind of topological structure of the isolated power inverter of distribution of driving AC load according to claim 1 or 2,
It is characterized in that, the AC/AC alternating current matrix converter (3) includes 9 matrix dots, each matrix dot is by two power
Pipe, which forms and connects two lines, realizes on or off.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920512501.6U CN209593007U (en) | 2019-04-16 | 2019-04-16 | A kind of topological structure of the isolated power inverter of distribution of driving AC load |
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| CN201920512501.6U CN209593007U (en) | 2019-04-16 | 2019-04-16 | A kind of topological structure of the isolated power inverter of distribution of driving AC load |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109950937A (en) * | 2019-04-16 | 2019-06-28 | 诺丁汉(余姚)智能电气化研究院有限公司 | A kind of topological structure of the isolated power inverter of distribution of driving AC load |
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- 2019-04-16 CN CN201920512501.6U patent/CN209593007U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109950937A (en) * | 2019-04-16 | 2019-06-28 | 诺丁汉(余姚)智能电气化研究院有限公司 | A kind of topological structure of the isolated power inverter of distribution of driving AC load |
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