CN209448659U - A kind of more DC port inverters - Google Patents
A kind of more DC port inverters Download PDFInfo
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- CN209448659U CN209448659U CN201920212759.4U CN201920212759U CN209448659U CN 209448659 U CN209448659 U CN 209448659U CN 201920212759 U CN201920212759 U CN 201920212759U CN 209448659 U CN209448659 U CN 209448659U
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Abstract
The utility model discloses a kind of more DC port inverters, the inverter includes a multiwinding transformer and M unidirectional current changer modules and N number of bi-directional inverter module, the multiwinding transformer includes a primary side winding and M+N vice-side winding, unidirectional current changer module connects one to one with the side that exchanges of bi-directional inverter module with vice-side winding, the DC side of N number of bi-directional inverter module cascades, its two ends constitutes low-voltage direct port, DC side of the low-voltage direct port again with M unidirectional current changer modules cascades, its two ends constitutes high voltage direct current port.The more DC port inverters of the utility model can provide multiple DC ports, constitute DC bus, connect DC load and DC power supply, have redundancy feature, high reliablity, cost performance height.
Description
Technical field
The utility model relates to a kind of more DC port inverters, belong to High Power Electronic Converter Technology field.
Background technique
DC distribution net demand in recent years it is continuous increase and power electronic technique it is increasingly mature, distributed power generation exists
Will be used wider and wider in power grid is general, such as new energy distributed power generation, distributed generation resource, load and energy storage device structure
At microgrid, the type of numerous distributed generation resources, load and energy storage device is different, includes direct current or exchange, voltage class, capacity
Also not identical, how by said units economy, efficiently access, carry out unified management be more scabrous problem；Currently, existing
DC distribution net access architecture it is complex, it usually needs a high voltage ac/dc converter, such as the friendship of modular multilevel
DC transformer and multiple DC/DC converters are constituted, and cost of implementation and realization difficulty are relatively high, as shown in Fig. 2, including two
High pressure AC/DC converter and multiple DC/DC converters are covered, the solution direct current distribution that the utility model provides a kind of low cost is high
More DC port inverters of low pressure access.
Summary of the invention
To solve the above-mentioned problems, the utility model proposes a kind of more DC port inverters, only a set of inverter can
The DC port of multiple and different voltage class is provided, multiple groups DC bus can be connected, without increasing additional investment, cost performance
It is high.
Specific scheme is as follows:
A kind of more DC port inverters, more DC port inverters include that a multiwinding transformer and M are single
To current changer module and N number of bi-directional inverter module, M is that integer, the N more than or equal to 2 are the integer more than or equal to 1, described more
Winding transformer includes a primary side winding and M+N vice-side winding, unidirectional current changer module and bi-directional inverter module
Exchange side connects one to one with vice-side winding, the DC output side cascade of N number of bi-directional inverter module, and cascade head end is fixed
Justice is low-voltage direct port anode, and cascade tail end is defined as low-voltage direct port cathode；The low-voltage direct port is single with M again
It is cascaded to the DC output side of current changer module, cascade head end is defined as high voltage direct current port anode, and cascade tail end is defined as height
Straightening flow port cathode.
Further, the unidirectional current changer module is constituted by not controlling type or half control type power semiconductor.
Further, the bi-directional inverter module is made of full-control type power semiconductor.
Further, N number of bi-directional inverter module is located at all current changer modules in more DC port inverters
Middle position.
Further, the low-voltage direct port is connect with high voltage direct current port by DC/DC converter, the DC/DC
Converter connects the direct current of different amplitudes, and realizes the two-way flow of energy.
Further, more DC port inverters further include K DC port, and K is more than or equal to 2 and to be less than or equal to
(M+N) integer；Arbitrarily take K a continuous in M unidirectional current changer modules and the block coupled in series chain of N number of bi-directional inverter module
Module, drawing port close to the module anode of high voltage direct current port anode is K DC port anode, close high voltage direct current end
It is K DC port cathode that the module negative of mouth cathode, which draws port,.
Further, the low-voltage direct port is connect with K DC port by DC/DC converter.
Further, the N is even number more than or equal to 2, from low-voltage direct port anode to low-voltage direct port cathode
The cathode of direction number, the N/2 bi-directional inverter module is drawn and is grounded.
Further, the DC output side of any two or multiple bi-directional inverter modules is connected in parallel, i.e., arbitrarily
The anode of the DC output side of two or more two-way modules is connected, and the cathode of corresponding DC output side is connected.
Further, the DC output side of any two or multiple unidirectional current changer modules is connected in parallel, i.e., arbitrarily
The anode of the DC output side of two or more unidirectional modules is connected, and the cathode of corresponding DC output side is connected.
Further, the unidirectional current changer module is bypassed with the DC output side of bi-directional inverter module one also in parallel
Switch.
Further, the unidirectional current changer module and the DC output side of bi-directional inverter module are also connected an electric power
Electronic unit.
Further, the power electronics unit quickly disjunction can export DC current, can bypass current changer module
DC output side, output voltage can be adjusted.
Further, the power electronics unit is by two full-control type power semiconductor IGBT half-bridge module structures
At just extremely the collector of upper tube IGBT, the input side cathode of power electronics unit are down tube to the input side of power electronics unit
The power generation pole of IGBT, half-bridge mid point, which is drawn, is used as output cathode, and output negative pole is with defeated as cathode is connect.
Further, the power electronics unit is the full-bridge modules structure by four full-control type power semiconductor IGBT
At.
Further, the power electronics unit is made of half-bridge module, inductance and DC capacitor, power electronics unit
Input side connects half-bridge module both ends, and the midpoint connection inductance of half-bridge module is as power electronics unit outlet side, and outlet side is simultaneously
Join DC capacitor.
Further, the power electronics unit is made of half-bridge module, inductance and DC capacitor, power electronics unit
Input side anode is connect through inductance with half-bridge module midpoint, and half-bridge module both ends parallel connection direct capacitor is defeated as power electronics unit
Side out.18, a kind of more DC port inverters as described in claim 1, it is characterised in that: the unidirectional current changer module with
Bi-directional inverter module exchanges alternating-current switch of connecting between side and the vice-side winding of multiwinding transformer.
Further, the phase phase difference certain angle between the vice-side winding of the multiwinding transformer, to eliminate primary side
Harmonic wave.
Further, the unidirectional current changer module include the AC/DC convertor being made of diode or thyristor and
DC capacitor, DC side and the DC capacitor of AC/DC convertor are connected in parallel, the exchange side of AC/DC convertor and Multiple coil
The secondary side of transformer connects.
Further, the bi-directional inverter module includes the ac-dc conversion being made of full-control type power semiconductor
Device, DC capacitor and filter unit, DC side and the DC capacitor of AC/DC convertor are connected in parallel, AC/DC convertor
After exchange side is connect with filter unit, then it connect with the secondary side of multiwinding transformer.
The utility model has the beneficial effects that
1, cascade by multiple change of current module DC capacitors the utility model proposes a kind of more DC port inverters
Mode constructs multiple groups DC port, wherein the low-voltage direct port of two-way change of current module composition can realize to and fro flow of power, fits
For the access of power supply or load, the high voltage direct current port of unidirectional change of current module composition is suitble to the access of load, the utility model
Further including two-way DC/DC converter between high voltage direct current port and low-voltage direct port can when inverse probability occurs in load side
Inverse probability is transferred to another port by two-way DC/DC converter, or it is transferred to transformer primary side, DC terminal more than one
Mouth inverter can provide high voltage direct current and low-voltage direct port simultaneously, while can handle inverse probability.Facilitate connecing for direct current distribution
Enter.Scheme is at low cost, and cost performance is high.
2, the secondary side of the unidirectional current changer module of the utility model and bi-directional inverter module and multiwinding transformer connects, and leads to
It is mutually isolated to cross vice-side winding, while being provided with power electronics unit and alternating-current switch, it may be convenient to according to actual need
Ask, adjust the quantity of the current changer module of investment, or change the series-parallel system of current changer module outlet side, when need voltage compared with
Gao Shi, can be in parallel by module outlet side when needing electric current larger using concatenated schemes, improves the flexibility of scheme, together
When, when module failure, malfunctioning module can also be cut off rapidly, greatly improve the reliability of scheme.
Detailed description of the invention
Fig. 1 is more DC port inverter theory of constitution figures of the utility model；
Fig. 2 is direct current distribution exemplary topology diagram in the prior art；
Fig. 3 is the first embodiment of power electronics unit；
Fig. 4 is the second embodiment of power electronics unit；
Fig. 5 is the 3rd embodiment of power electronics unit；
Fig. 6 is the fourth embodiment of power electronics unit；
Fig. 7 is the second embodiment of more DC port inverters of the utility model；
Fig. 8 is the 3rd embodiment of more DC port inverters of the utility model；
Fig. 9 is the fourth embodiment of more DC port inverters of the utility model；
Figure label title: 1, multiwinding transformer；2, unidirectional current changer module；3, bi-directional inverter module；4, high pressure
DC port anode；5, high voltage direct current port cathode；6, low-voltage direct port anode；7, low-voltage direct port cathode；8, it exchanges
Switch；9, power electronics unit；10, DC/DC converter；11, by-pass switch.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing.
As shown in Figure 1, the more DC port inverters of the utility model include that a multiwinding transformer 1 and M unidirectionally change
Flow device module 2 and N number of bi-directional inverter module 3, M is that integer, the N more than or equal to 2 are integer more than or equal to 1, it is described mostly around
Group transformer includes a primary side winding and M+N vice-side winding, the friendship of unidirectional current changer module and bi-directional inverter module
Stream side connects one to one with vice-side winding, the DC output side cascade of N number of bi-directional inverter module, cascade head end definition
For low-voltage direct port anode 6, cascades tail end and be defined as low-voltage direct port cathode 7；The low-voltage direct port is single with M again
It is cascaded to the DC output side of current changer module, cascade head end is defined as high voltage direct current port anode 4, and cascade tail end is defined as height
Straightening flow port cathode 5；The unidirectional current changer module is constituted by not controlling type or half control type power semiconductor, described two-way
Current changer module is made of full-control type power semiconductor.
Wherein, in the present embodiment, N number of bi-directional inverter module is located at all changes of current in more DC port inverters
The middle position of device module.As shown in Figure 1, respectively including the identical unidirectional change of current of quantity above and below bi-directional inverter module
Device module.
Wherein, the low-voltage direct port is connect with high voltage direct current port by DC/DC converter 10, and the DC/DC becomes
Parallel operation connects the direct current of different amplitudes, and realizes the two-way flow of energy.
More DC port inverters further include K DC port, and K is more than or equal to 2 and whole less than or equal to (M+N)
Number；K continuous modules are arbitrarily taken in M unidirectional current changer modules and the block coupled in series chain of N number of bi-directional inverter module, are leaned on
It is K DC port anode that the module anode of nearly high voltage direct current port anode, which draws port, close to high voltage direct current port cathode
Module negative draw port be K DC port cathode.Any a continuous module composition in the utility model embodiment
Serial chain port can be drawn.
Wherein, the low-voltage direct port is connect with K DC port by DC/DC converter.
Wherein, the N is even number more than or equal to 2, from low-voltage direct port anode to low-voltage direct port cathode direction
Number, the cathode of the N/2 bi-directional inverter module are drawn and are grounded.As shown in fig. 7, as N=2, two bi-directional inverter moulds
The cathode at the midpoint of block, i.e., the 1st bi-directional inverter module is drawn and is grounded, and true bipolar DC system is constituted.
Wherein, the DC output side of any two or multiple bi-directional inverter modules can be connected in parallel, i.e., each
The anode of the DC output side of two-way modules is connected, and the cathode of corresponding DC output side is connected.
Wherein, the DC output side of any two or multiple unidirectional current changer modules also can be connected in parallel, i.e., respectively
The anode of the DC output side of a unidirectional module is connected, and the cathode of corresponding DC output side is connected.As shown in figure 8, every two
After single-phase module parallel connection constitutes one group, then cascade.
Wherein, the unidirectional current changer module and the DC output side of a bi-directional inverter module by-pass switch also in parallel
11。
Wherein, the unidirectional current changer module and the DC output side of bi-directional inverter module are also connected a power electronics
Unit 9.
Wherein, the power electronics unit quickly disjunction can export DC current, can bypass the straight of current changer module
Outlet side is flowed, output voltage can be adjusted.
As shown in figure 3, being the first embodiment of power electronics unit, power electronics unit is by two full-control type power half
Conductor device IGBT half-bridge module is constituted, and just extremely the collector of upper tube IGBT, input side cathode are down tube IGBT's to input side
Generate electricity pole, and half-bridge mid point, which is drawn, is used as output cathode, and output negative pole is with defeated as cathode is connect.When operating normally, upper tube IGBT
Conducting, down tube IGBT shutdown, when needing disjunction, upper tube IGBT is turned off, down tube IGBT is held off.When needing to bypass,
Upper tube IGBT shutdown, down tube IGBT conducting.As shown in figure 4, being the second embodiment of power electronics unit, power electronics unit is
It is made of the full-bridge modules of four full-control type power semiconductor IGBT.Fig. 5 and Fig. 6 is that the third with voltage regulation function is implemented
Example and fourth embodiment, by half-bridge module, inductance and capacitor are constituted, and the input side of Fig. 5 power electronics unit connects half-bridge module
Both ends, the midpoint connection inductance of half-bridge module is as power electronics unit outlet side, outlet side parallel connection direct capacitor；Fig. 6 electric power
The input side anode of electronic unit is connect through inductance with half-bridge module midpoint, and half-bridge module both ends parallel connection direct capacitor is as electric power
Electronic unit outlet side.
Wherein, the unidirectional current changer module exchanges the vice-side winding of side and multiwinding transformer with bi-directional inverter module
Between also connect an alternating-current switch 8.
Wherein, the phase phase difference certain angle between the vice-side winding of the multiwinding transformer, to eliminate primary side harmonic wave.
Wherein, the unidirectional current changer module includes the AC/DC convertor and direct current being made of diode or thyristor
Capacitor, DC side and the DC capacitor of AC/DC convertor are connected in parallel, the exchange side of AC/DC convertor and Multiple coil transformation
The secondary side of device connects.
Wherein, the bi-directional inverter module include the AC/DC convertor being made of full-control type power semiconductor,
DC capacitor and filter unit, DC side and the DC capacitor of AC/DC convertor are connected in parallel, the friendship of AC/DC convertor
After stream side is connect with filter unit, then it connect with the secondary side of multiwinding transformer.
It is exemplified below application and control method that an application scenarios further illustrate the utility model, this is practical
Novel more DC port inverters can be applied to DC distribution net occasion, as shown in Figure 9.
Wherein, N number of bi-directional inverter module is located at the middle positions of all modules in the inverter.In the application
Middle M=10, N=2, it is centrally located that the present embodiment summarizes 2 bi-directional inverter modules, the top of bi-directional inverter module and
Lower section respectively includes 5 unidirectional current changer modules, and wherein bi-directional inverter module exports rated direct voltage ± 375V, and 10 unidirectional
Current changer module output voltage is 1.925kV, and direct voltage is superimposed after series connection, and total nominal voltage is ± 10kV, high voltage direct current
Port is connect with load bus, and load bus is ± 10kV direct current.The interface as direct current distribution is drawn in low-voltage direct port, leads to
DC/DC converter is crossed by energy-storage system or photovoltaic system access or DC load.
(1) when more DC port inverters start:
Step 1: the closure single, double alternating-current switch to current changer module；
Step 2: the electrification of multiwinding transformer primary side, it is single, double to enter charged state to the DC capacitor of current changer module；
Step 3: after the completion of to be charged, DC capacitor voltage is stablized, and starts bi-directional inverter module, power semiconductor
Unlock adjusts bi-directional inverter module output DC voltage and reaches target value.
(2) when more DC port inverters need to adjust the DC voltage of high voltage direct current port, following two kinds be can be used
One of control method:
Method 1: adjusting the DC voltage of low-voltage direct port, and the DC voltage of high voltage direct current port changes therewith；
Method 2: according to set target value, the quantity of unidirectional current changer module, utilizes unidirectional current changer module needed for calculating
In power electronics unit or by-pass switch, a certain number of unidirectional current changer modules are bypassed.
Such as output voltage is adjusted in this application occasion and arrives ± 10.5kV, method 1 can be used, by adjusting the two-way change of current
Low-voltage direct port voltage is adjusted and arrives ± 400V by the output DC voltage of device module.
Such as output voltage is adjusted and arrives ± 8kV, method 2 can be used, utilize the power electronics list in unidirectional current changer module
2 unidirectional current changer modules are bypassed, can bypass each module up and down by member, realize that output voltage is adjusted.
Method 3: half control type device, such as thyristor, the bridge-type electricity that thyristor is constituted can be used in above-mentioned single-phase inverters module
Road has output DC voltage regulation function.
Method 4: circuit as shown in Figure 5 can be used in above-mentioned power electronics unit, which is typical reduction regulation circuit,
Module can be exported DC voltage to turn down, adjust and arrive ± 8kV.
(3) when the load emergent power on low-voltage direct port is sent, one of following two kinds of control methods can be used:
Method 1: detecting that low-voltage direct port voltage increases, and bi-directional inverter module is passed by transformer secondary to primary side
Defeated remaining energy；
Method 2: detecting that low-voltage direct port voltage increases, surplus to high voltage direct current port transmission by DC/DC converter
Remaining energy.
In this application occasion, if low-voltage direct photovoltaic generation unit output power is greater than DC load, occur
It send, is selected in two methods, when high voltage direct current port needs this portion of energy, optional selection method 2, also optional selection method 1, is incited somebody to action
Superfluous energy sends power grid back to.
(4) when the load emergent power on high voltage direct current port is sent, one of following two kinds of control methods can be used:
Method 1: detecting that high voltage direct current port voltage increases, surplus to low-voltage direct port transmission by DC/DC converter
Remaining energy.
Method 2: part energy is transferred to load by low-voltage direct port, when detect low-voltage direct port voltage increase
When, bi-directional inverter module transmits remaining energy to primary side by transformer secondary；
In this application occasion, when the load emergent power on high voltage direct current port is sent, selected in two methods,
When low-voltage direct port can dissolve this portion of energy, optional selection method 1 transmits energy to low-voltage direct port；If energy
Excessive, method 1 can not completely consume, also optional selection method 2, and the energy of another part surplus is logical by bi-directional inverter module
It crosses transformer and sends power grid back to.
Above embodiments are merely to illustrate the technical solution of the utility model rather than its limitations, referring to above-described embodiment into
Capable various forms modification or change both are within the protection scope of the present invention.
Claims (21)
1. a kind of more DC port inverters, which is characterized in that more DC port inverters include a Multiple coil transformation
Device and M unidirectional current changer modules and N number of bi-directional inverter module, it is whole more than or equal to 1 that M, which is more than or equal to 2 integer, N,
Number, the multiwinding transformer include a primary side winding and M+N vice-side winding, unidirectional current changer module and the two-way change of current
Exchange side and the vice-side winding of device module connect one to one, the DC output side cascade of N number of bi-directional inverter module, grade
Connection head end is defined as low-voltage direct port anode, and cascade tail end is defined as low-voltage direct port cathode；The low-voltage direct port
The DC output side with M unidirectional current changer modules cascades again, and cascade head end is defined as high voltage direct current port anode, cascades tail end
It is defined as high voltage direct current port cathode.
2. a kind of more DC port inverters as described in claim 1, it is characterised in that: the unidirectional current changer module is not by
Control type or half control type power semiconductor are constituted.
3. a kind of more DC port inverters as described in claim 1, it is characterised in that: the bi-directional inverter module is by complete
Control type power semiconductor is constituted.
4. a kind of more DC port inverters as described in claim 1, it is characterised in that: in more DC port inverters
N number of bi-directional inverter module is located at the middle position of all current changer modules.
5. a kind of more DC port inverters as described in claim 1, it is characterised in that: the low-voltage direct port and high pressure
DC port is connected by DC/DC converter, and the DC/DC converter connects the direct current of different amplitudes, and realizes energy
Two-way flow.
6. a kind of more DC port inverters as described in claim 1, it is characterised in that: more DC port inverters are also
Including K DC port, K is the integer more than or equal to 2 and less than or equal to (M+N)；In M unidirectional current changer modules and N number of pair
K continuous modules are arbitrarily taken into the block coupled in series chain of current changer module, close to the module anode of high voltage direct current port anode
Drawing port is K DC port anode, and drawing port close to the module negative of high voltage direct current port cathode is K DC port
Cathode.
7. a kind of more DC port inverters as claimed in claim 6, it is characterised in that: the low-voltage direct port and K
DC port is connected by DC/DC converter.
8. a kind of more DC port inverters as claimed in claim 4, it is characterised in that: the N is the idol more than or equal to 2
Number, from low-voltage direct port anode to low-voltage direct port cathode direction number, the cathode of the N/2 bi-directional inverter module is drawn
And it is grounded.
9. a kind of more DC port inverters as described in claim 1, it is characterised in that: any two are multiple two-way
The DC output side of current changer module is connected in parallel, i.e. the positive phase of the DC output side of any two or multiple two-way modules
Even, the cathode of corresponding DC output side is connected.
10. a kind of more DC port inverters as described in claim 1, it is characterised in that: any two or multiple lists
It is connected in parallel to the DC output side of current changer module, i.e. the positive phase of the DC output side of any two or multiple unidirectional modules
Even, the cathode of corresponding DC output side is connected.
11. a kind of more DC port inverters as described in claim 1, it is characterised in that: the unidirectional current changer module with
The DC output side of a bi-directional inverter module by-pass switch also in parallel.
12. a kind of more DC port inverters as described in claim 1, it is characterised in that: the unidirectional current changer module with
The DC output side of bi-directional inverter module is also connected a power electronics unit.
13. a kind of more DC port inverters as claimed in claim 12, it is characterised in that: the power electronics unit can
Quick disjunction exports DC current, can bypass the DC output side of current changer module, can adjust output voltage.
14. a kind of more DC port inverters as claimed in claim 12, it is characterised in that: the power electronics unit is served as reasons
Two full-control type power semiconductor IGBT half-bridge modules are constituted, the input side of power electronics unit just extremely upper tube IGBT's
Collector, the input side cathode of power electronics unit are the power generation pole of down tube IGBT, and half-bridge mid point, which is drawn, is used as output cathode, defeated
Cathode is with defeated as cathode is connect out.
15. a kind of more DC port inverters as claimed in claim 12, it is characterised in that: the power electronics unit is served as reasons
The full-bridge modules of four full-control type power semiconductor IGBT are constituted.
16. a kind of more DC port inverters as claimed in claim 12, it is characterised in that: the power electronics unit is by half
Bridge module, inductance and DC capacitor are constituted, and the input side of power electronics unit connects half-bridge module both ends, the midpoint of half-bridge module
Inductance is connected as power electronics unit outlet side, outlet side parallel connection direct capacitor.
17. a kind of more DC port inverters as claimed in claim 12, it is characterised in that: the power electronics unit is by half
Bridge module, inductance and DC capacitor are constituted, and the input side anode of power electronics unit is connect through inductance with half-bridge module midpoint, and half
Bridge module both ends parallel connection direct capacitor is as power electronics unit outlet side.
18. a kind of more DC port inverters as described in claim 1, it is characterised in that: the unidirectional current changer module with
Bi-directional inverter module exchanges alternating-current switch of connecting between side and the vice-side winding of multiwinding transformer.
19. a kind of more DC port inverters as described in claim 1, it is characterised in that: the pair of the multiwinding transformer
Phase phase difference certain angle between the winding of side, to eliminate primary side harmonic wave.
20. a kind of more DC port inverters as described in claim 1, it is characterised in that: the unidirectional current changer module packet
Include the AC/DC convertor and DC capacitor being made of diode or thyristor, the DC side and direct current of AC/DC convertor
Appearance is connected in parallel, and the exchange side of AC/DC convertor and the secondary side of multiwinding transformer connect.
21. a kind of more DC port inverters as described in claim 1, it is characterised in that: the bi-directional inverter module packet
Include AC/DC convertor, DC capacitor and the filter unit being made of full-control type power semiconductor, AC/DC convertor
DC side be connected in parallel with DC capacitor, after the exchange side of AC/DC convertor is connect with filter unit, then with Multiple coil become
The secondary side of depressor connects.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109873568A (en) * | 2019-02-19 | 2019-06-11 | 南京南瑞继保电气有限公司 | A kind of more DC port inverters and control method |
| CN112217407A (en) * | 2020-09-30 | 2021-01-12 | 阳光电源股份有限公司 | Cascaded multi-port converter and three-phase medium-voltage input system |
| CN113162414A (en) * | 2021-05-06 | 2021-07-23 | 天津大学 | Base unit for electric energy converter, electric energy converter and universal power interface |
| US11817701B2 (en) | 2021-01-29 | 2023-11-14 | Eaton Intelligent Power Limited | Multi-port split-phase power system |
-
2019
- 2019-02-19 CN CN201920212759.4U patent/CN209448659U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109873568A (en) * | 2019-02-19 | 2019-06-11 | 南京南瑞继保电气有限公司 | A kind of more DC port inverters and control method |
| CN112217407A (en) * | 2020-09-30 | 2021-01-12 | 阳光电源股份有限公司 | Cascaded multi-port converter and three-phase medium-voltage input system |
| US11817701B2 (en) | 2021-01-29 | 2023-11-14 | Eaton Intelligent Power Limited | Multi-port split-phase power system |
| CN113162414A (en) * | 2021-05-06 | 2021-07-23 | 天津大学 | Base unit for electric energy converter, electric energy converter and universal power interface |
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