CN109768729A - Single-phase high frequency isolated form variable topology AC-DC converter - Google Patents
Single-phase high frequency isolated form variable topology AC-DC converter Download PDFInfo
- Publication number
- CN109768729A CN109768729A CN201910229821.5A CN201910229821A CN109768729A CN 109768729 A CN109768729 A CN 109768729A CN 201910229821 A CN201910229821 A CN 201910229821A CN 109768729 A CN109768729 A CN 109768729A
- Authority
- CN
- China
- Prior art keywords
- power switch
- converter
- capacitor
- bridge converter
- inductance
- 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.)
- Pending
Links
Landscapes
- Inverter Devices (AREA)
Abstract
Single-phase high frequency isolated form variable topology AC-DC converter, belongs to transformation of electrical energy technical field, and the present invention is to solve the problems, such as that existing single-phase AC/DC convertor body product is big, at high cost, apparent energy utilization rate is low.Two output ends that the present invention exchanges side LC filter are separately connected two input terminals of matrix converter, and two output ends of matrix converter are separately connected the both ends of the first winding of high-frequency isolation transformer；First bridge converter and the second bridge converter structure are identical, two input terminals of the first bridge converter are separately connected the both ends of the second winding of high-frequency isolation transformer, two input terminals of the second bridge converter are separately connected the both ends of the tertiary winding of high-frequency isolation transformer, output end after first bridge converter and the second bridge converter serial or parallel connection is connected with the input terminal of DC side LC filter, the DC voltage after DC side LC filter output transform.The present invention is used for single-phase AC/DC convertor.
Description
Technical field
The present invention relates to a kind of single-phase high frequency isolated form variable topology AC-DC converters, belong to transformation of electrical energy technical field.
Background technique
It is the energy-storage system of representative in necks such as distributed type renewable power generation micro-capacitance sensor, electric vehicles using battery and super capacitor
Domain is applied widely.In above-mentioned energy-storage system, it usually needs the ac-dc conversion device with bidirectional power transfer function
Charge and discharge are carried out to energy-storage travelling wave tube.In addition, to eliminate leakage current and improving security of system, it is desirable that the ac-dc conversion utensil
There is electrical isolation function.
In the existing ac-dc conversion device applied to energy-storage system, a kind of electrical isolation scheme taken include with
Under it is several:
The first scheme is that power frequency isolation transformer is added between exchange side and power grid, although this scheme can be realized
Electrical isolation between converter and AC network, but since power frequency isolation transformer works in mains frequency, volume is larger,
Simultaneously because its power is identical with the inverter power connected, increased costs and power consumption is caused to increase.
It is using the DC-DC converter combination DC- with high-frequency isolation transformer that another kind, which obtains widely applied scheme,
The two-stage type structure of AC converter, this configuration eliminates Industrial Frequency Transformers, so that the volume of whole system is significantly reduced, but
Be this structure number of devices it is more, cause cost and larger, and big capacitance electricity used in link among it be lost
Solution capacitor service life is shorter, and the service life for also resulting in whole system is limited.
The third scheme is the single stage type structure using AC-DC direct converter, and this configuration eliminates intermediate DC-DC
Transform part, without the big capacitance electrolytic capacitor for using DC link, to also significantly be mentioned while volume is greatly reduced
The high service life of whole system.Just because of above-mentioned advantage, so that this structure has wide hair in energy-storage system
Exhibition prospect.
By the working characteristics of battery and super capacitor it is found that its end voltage can be big with the variation of storage inside energy
Amplitude variation, and in order to maintain invariable power charge-discharge characteristic, it needs to maintain larger operating current when holding voltage lower, and in end electricity
Smaller operating current is only needed when pressing higher.The rated capacity for being currently used for the power device of the converter of energy-storage system is both needed to
It is chosen according to the maximum working voltage of energy-storage system and electric current, causing the apparent energy of whole system, there are larger wastes, and
And system cost, volume and loss dramatically increase.
Summary of the invention
The invention aims to solve, existing single-phase AC/DC convertor body product is big, at high cost, apparent energy is sharp
With the low problem of rate, a kind of single-phase high frequency isolated form variable topology AC-DC converter is provided.
Single-phase high frequency isolated form variable topology AC-DC converter of the present invention, it includes exchange side LC filter, two-way
Matrix converter, high-frequency isolation transformer, the first bridge converter, the second bridge converter and the DC side that power switch is constituted
LC filter；
Two output ends of exchange side LC filter are separately connected two input terminals of matrix converter, matrix converter
Two output ends are separately connected the both ends of the first winding of high-frequency isolation transformer；
First bridge converter and the second bridge converter structure are identical, two input terminals difference of the first bridge converter
The both ends of the second winding of high-frequency isolation transformer are connected, two input terminals of the second bridge converter are separately connected high-frequency isolation
Output end after the both ends of the tertiary winding of transformer, the first bridge converter and the second bridge converter serial or parallel connection and straight
The input terminal for flowing side LC filter is connected, the DC voltage after DC side LC filter output transform.
Preferably, it further includes two single-pole double-throw switch (SPDT)s, and the first bridge converter and the second bridge converter pass through two
A single-pole double-throw switch (SPDT) realization is connected in series or in parallel.
Preferably, exchange side LC filter includes inductance LgWith capacitor Cg, inductance LgOne end and capacitor CgOne end difference
Connect power grid, inductance LgThe other end and capacitor CgThe other end be connected, capacitor CgBoth ends as exchange side LC filter two
A output end.
Preferably, matrix converter includes two-way power switch Q1, Q2, Q3 and Q4, one end of two-way power switch Q1 and
One end of two-way power switch Q3 is connected, an input terminal of the points of common connection as matrix converter, two-way power switch Q2
One end be connected with one end of two-way power switch Q4, another input terminal of points of common connection as matrix converter is two-way
The other end of power switch Q1 is connected with the other end of two-way power switch Q2, one as matrix converter of public connecting end
Output end connects the Same Name of Ends of the first winding of high-frequency isolation transformer, the other end and bidirectional power of two-way power switch Q3
The other end of switch Q4 is connected, another output of the public connecting end as matrix converter, connects high-frequency isolation transformer
The first winding different name end；
Two-way power switch Q1, Q2, Q3 are identical with the structure of Q4, are reversely connected in series to form by two power switch.
Preferably, the first bridge converter includes inductance L1, power switch S1, power switch S2, power switch S3, power
Switch S4 and capacitor C1；An input terminal of the one end of inductance L1 as the first bridge converter connects high-frequency isolation transformer
The second winding Same Name of Ends, the other end of inductance L1 connects one end of power switch S1 and one end of power switch S2 simultaneously,
One end of power switch S3 is connected with one end of power switch S4, public connecting end as the first bridge converter another is defeated
Enter end, connect the different name end of the second winding of high-frequency isolation transformer, the other end of power switch S1 connects power switch simultaneously
The other end of S3 and one end of capacitor C1, an output end of the public connecting end as the first bridge converter, power switch S2
The other end simultaneously connect the other end of power switch S4 and the other end of capacitor C1, public connecting end is converted as the first bridge-type
The another output of device connects the pin 1 of the first single-pole double-throw switch (SPDT) J1.
Preferably, the second bridge converter includes inductance L2, inductance L3, power switch S5, power switch S6, power switch
S7, power switch S8 and capacitor C2；An input terminal of the one end of inductance L2 as the second bridge converter connects high-frequency isolation
The Same Name of Ends of the tertiary winding of transformer, the other end of inductance L2 simultaneously connect one end and the power switch S6 of power switch S5
One end of one end, power switch S7 is connected with one end of power switch S8, and public connecting end is another as the second bridge converter
One input terminal, connects the different name end of the tertiary winding of high-frequency isolation transformer, and the other end of power switch S5 connects function simultaneously
The other end of rate switch S7, one end of capacitor C2 and inductance L3 one end, the other end of inductance L3 is as the second bridge converter
An output end, connect the pin 1 of the second single-pole double-throw switch (SPDT) J2, the other end of power switch S6 connects power switch simultaneously
The other end of S8 and the other end of capacitor C2, another output of the public connecting end as the second bridge converter.
Preferably, DC side LC filter includes inductance L0 and capacitor C0；
An input terminal of the one end of inductance L0 as DC side LC filter connects power switch S1 and power switch S3
Public connecting end, the other end of inductance L0 connects one end of capacitor C0 and the pin 3 of the second single-pole double-throw switch (SPDT) J2 simultaneously, electricity
Hold another input terminal of the other end of C0 as DC side LC filter, connection power switch S7's and power switch S8 is public
Connecting pin, while the pin 3 of the first single-pole double-throw switch (SPDT) J1 is connected, the connection of pin 2 second of the first single-pole double-throw switch (SPDT) J1 is single
Direct-flow positive pole output end of the public connecting end of the pin 2 of double-pole double throw switch J2, inductance L0 and capacitor C0 as converter, capacitor
Direct current negative input of the other end of C0 as converter.
Advantages of the present invention:
1, using high-frequency isolation transformer and single stage type structure, Industrial Frequency Transformer and big capacitance electrolytic capacitor are eliminated, is had
Have the advantages that small in size, light-weight, high-efficient, the service life is long；
2, by the switching of topological structure, making full use of for power device rated capacity is realized, system is significantly reduced
Cost improves system effectiveness.
Detailed description of the invention
Fig. 1 is the schematic diagram of single-phase high frequency isolated form variable topology AC-DC converter of the present invention；
Fig. 2 is the schematic diagram of two-way power switch；
Simplification circuit structure schematic diagram when Fig. 3 is the first bridge converter and the output series connection of the second bridge converter；
Simplification circuit structure schematic diagram when Fig. 4 is the first bridge converter and the second bridge converter output-parallel.
Specific embodiment
Specific embodiment 1: illustrating present embodiment, single-phase high frequency described in present embodiment below with reference to Fig. 1 and Fig. 2
Isolated form variable topology AC-DC converter, it include exchange side LC filter, two-way power switch constitute matrix converter,
High-frequency isolation transformer, the first bridge converter, the second bridge converter and DC side LC filter；
Two output ends of exchange side LC filter are separately connected two input terminals of matrix converter, matrix converter
Two output ends are separately connected the both ends of the first winding of high-frequency isolation transformer；
First bridge converter and the second bridge converter structure are identical, two input terminals difference of the first bridge converter
The both ends of the second winding of high-frequency isolation transformer are connected, two input terminals of the second bridge converter are separately connected high-frequency isolation
Output end after the both ends of the tertiary winding of transformer, the first bridge converter and the second bridge converter serial or parallel connection and straight
The input terminal for flowing side LC filter is connected, the DC voltage after DC side LC filter output transform.
In present embodiment, the first winding is primary coil, and the second winding and the tertiary winding are secondary coil.
In present embodiment, by controlling the connection type of two single-pole double-throw switch (SPDT)s, two H bridging parallel operations may be implemented
It the series connection of outlet side and is connected in parallel, to realize wide output voltage and current range by low pressure, low current power device.
It further includes that two single-pole double-throw switch (SPDT)s, the first bridge converter and the second bridge converter are double by two hilted broadswords
Throw switch realization is connected in series or in parallel.
Exchanging side LC filter includes inductance LgWith capacitor Cg, inductance LgOne end and capacitor CgOne end be separately connected electricity
Net, inductance LgThe other end and capacitor CgThe other end be connected, capacitor CgBoth ends as two of side LC filter outputs of exchange
End.
Matrix converter includes two-way power switch Q1, Q2, Q3 and Q4, one end of two-way power switch Q1 and bidirectional power
One end of switch Q3 is connected, an input terminal of the points of common connection as matrix converter, one end of two-way power switch Q2 with
One end of two-way power switch Q4 is connected, another input terminal of points of common connection as matrix converter, two-way power switch
The other end of Q1 is connected with the other end of two-way power switch Q2, an output end of the public connecting end as matrix converter,
Connect the Same Name of Ends of the first winding of high-frequency isolation transformer, the other end of two-way power switch Q3 and two-way power switch Q4's
The other end is connected, another output of the public connecting end as matrix converter, connect the first of high-frequency isolation transformer around
The different name end of group；
Two-way power switch Q1, Q2, Q3 are identical with the structure of Q4, are reversely connected in series to form by two power switch.
In present embodiment, two-way power switch Q1, Q2, Q3 and Q4 are all made of two power switch differential concatenation compositions,
As shown in Figure 2.The power device work inside the two-way power switch under respective direction is controlled according to the polarity of network voltage vg,
To guarantee that matrix converter exports correct polarity of voltage.
First bridge converter includes inductance L1, power switch S1, power switch S2, power switch S3, power switch S4
With capacitor C1；An input terminal of the one end of inductance L1 as the first bridge converter, connects the second of high-frequency isolation transformer
The other end of the Same Name of Ends of winding, inductance L1 connects one end of power switch S1 and one end of power switch S2 simultaneously, and power is opened
The one end for closing S3 is connected with one end of power switch S4, another input terminal of public connecting end as the first bridge converter,
The different name end of the second winding of high-frequency isolation transformer is connected, the other end of power switch S1 connects the another of power switch S3 simultaneously
One end of one end and capacitor C1, an output end of the public connecting end as the first bridge converter, power switch S2's is another
It holds while connecting the other end of power switch S4 and the other end of capacitor C1, public connecting end is another as the first bridge converter
One output end connects the pin 1 of the first single-pole double-throw switch (SPDT) J1.
Second bridge converter includes inductance L2, inductance L3, power switch S5, power switch S6, power switch S7, power
Switch S8 and capacitor C2；An input terminal of the one end of inductance L2 as the second bridge converter connects high-frequency isolation transformer
The tertiary winding Same Name of Ends, the other end of inductance L2 connects one end of power switch S5 and one end of power switch S6 simultaneously,
One end of power switch S7 is connected with one end of power switch S8, public connecting end as the second bridge converter another is defeated
Enter end, connect the different name end of the tertiary winding of high-frequency isolation transformer, the other end of power switch S5 connects power switch simultaneously
The other end of S7, one end of capacitor C2 and inductance L3 one end, one as the second bridge converter of the other end of inductance L3
Output end, connects the pin 1 of the second single-pole double-throw switch (SPDT) J2, and the other end of power switch S6 connects the another of power switch S8 simultaneously
The other end of one end and capacitor C2, another output of the public connecting end as the second bridge converter.
DC side LC filter includes inductance L0 and capacitor C0；One as DC side LC filter of one end of inductance L0
Input terminal, connects the public connecting end of power switch S1 and power switch S3, and the other end of inductance L0 connects capacitor C0's simultaneously
The pin 3 of one end and the second single-pole double-throw switch (SPDT) J2, another input of the other end of capacitor C0 as DC side LC filter
End connects the public connecting end of power switch S7 and power switch S8, while connecting the pin 3 of the first single-pole double-throw switch (SPDT) J1,
The pin 2 of first single-pole double-throw switch (SPDT) J1 connects the pin 2 of the second single-pole double-throw switch (SPDT) J2, the public company of inductance L0 and capacitor C0
Connect the direct-flow positive pole output end held as converter, direct current negative input of the other end of capacitor C0 as converter.
Below with reference to Fig. 3 and Fig. 4, illustrate specific works mistake of the invention so that power is from exchange effluent to DC side as an example
Journey.1 foot and 2 feet in the battery or higher super-capacitor voltage that DC side is connected, in the first single-pole double-throw switch (SPDT) J1
It is connected, 1 foot and 2 feet in the second single-pole double-throw switch (SPDT) J2 are also connected, so that the first bridge converter and the second bridge-type be made to convert
Passing through DC side LC filter after the output end series connection of device jointly is battery or the super capacitor charging connected, due to output
Voltage is higher, therefore lesser charging current can be used, invariable power charging can be realized.In the battery that DC side is connected
Or super-capacitor voltage it is lower when, 1 foot and 3 feet in the first single-pole double-throw switch (SPDT) J1 are connected, in the second single-pole double-throw switch (SPDT) J2
1 foot and 3 feet be also connected, thus jointly by straight after keeping the output end of the first bridge converter and the second bridge converter in parallel
Stream side LC filter charges for the battery or super capacitor connected, since output voltage is lower, it is therefore desirable to larger charging
Electric current, and since the first bridge converter and the second bridge converter are parallel relationship, charging current is by the two average mark
Match, therefore the output electric current of each bridge converter is the half of required total current.
By the working principle of above-mentioned single-phase high frequency isolated form variable topology AC-DC converter it is found that for whole system
Set maximum charging voltage and charging current, the voltage rating and electric current of each power device in each bridge converter
The only half of default value, so that the preliminary examination cost of investment of system is significantly reduced, and its smaller voltage rating
The power loss and system bulk being significantly reduced with electric current in use process.
Claims (7)
1. single-phase high frequency isolated form variable topology AC-DC converter, which is characterized in that it includes exchange side LC filter, two-way
Matrix converter, high-frequency isolation transformer, the first bridge converter, the second bridge converter and the DC side that power switch is constituted
LC filter；
Two output ends of exchange side LC filter are separately connected two input terminals of matrix converter, and two of matrix converter
Output end is separately connected the both ends of the first winding of high-frequency isolation transformer；
First bridge converter and the second bridge converter structure are identical, and two input terminals of the first bridge converter are separately connected
Two input terminals at the both ends of the second winding of high-frequency isolation transformer, the second bridge converter are separately connected high-frequency isolation transformation
Output end and DC side after the both ends of the tertiary winding of device, the first bridge converter and the second bridge converter serial or parallel connection
The input terminal of LC filter is connected, the DC voltage after DC side LC filter output transform.
2. single-phase high frequency isolated form variable topology AC-DC converter according to claim 1, which is characterized in that it is also wrapped
It includes two single-pole double-throw switch (SPDT)s, the first bridge converter and the second bridge converter and realizes series connection by two single-pole double-throw switch (SPDT)s
Or it is connected in parallel.
3. single-phase high frequency isolated form variable topology AC-DC converter according to claim 1, which is characterized in that exchange side
LC filter includes inductance LgWith capacitor Cg, inductance LgOne end and capacitor CgOne end be separately connected power grid, inductance LgIt is another
End and capacitor CgThe other end be connected, capacitor CgBoth ends as exchange side LC filter two output ends.
4. single-phase high frequency isolated form variable topology AC-DC converter according to claim 1, which is characterized in that matrix becomes
Parallel operation includes two-way power switch Q1, Q2, Q3 and Q4, one end of two-way power switch Q1 and one end phase of two-way power switch Q3
Even, an input terminal of the points of common connection as matrix converter, one end of two-way power switch Q2 and two-way power switch Q4
One end be connected, another input terminal of points of common connection as matrix converter, the other end of two-way power switch Q1 and pair
It is connected to the other end of power switch Q2, an output end of the public connecting end as matrix converter, connection high-frequency isolation becomes
The other end of the Same Name of Ends of first winding of depressor, two-way power switch Q3 is connected with the other end of two-way power switch Q4, public
Another output of the connecting pin as matrix converter altogether, connects the different name end of the first winding of high-frequency isolation transformer；
Two-way power switch Q1, Q2, Q3 are identical with the structure of Q4, are reversely connected in series to form by two power switch.
5. single-phase high frequency isolated form variable topology AC-DC converter according to claim 2, which is characterized in that the first bridge
Formula converter includes inductance L1, power switch S1, power switch S2, power switch S3, power switch S4 and capacitor C1；Inductance L1
An input terminal of the one end as the first bridge converter, connect the Same Name of Ends of the second winding of high-frequency isolation transformer, electricity
The other end for feeling L1 connects one end of power switch S1 and one end of power switch S2, one end of power switch S3 and power simultaneously
One end of switch S4 is connected, another input terminal of public connecting end as the first bridge converter, connects high-frequency isolation transformation
The different name end of second winding of device, the other end of power switch S1 connect simultaneously power switch S3 the other end and capacitor C1 one
End, an output end of the public connecting end as the first bridge converter, the other end of power switch S2 connect power simultaneously and open
Close the other end of S4 and the other end of capacitor C1, another output of the public connecting end as the first bridge converter, connection
The pin 1 of first single-pole double-throw switch (SPDT) J1.
6. single-phase high frequency isolated form variable topology AC-DC converter according to claim 2, which is characterized in that the second bridge
Formula converter includes inductance L2, inductance L3, power switch S5, power switch S6, power switch S7, power switch S8 and capacitor
C2；An input terminal of the one end of inductance L2 as the second bridge converter, connects the tertiary winding of high-frequency isolation transformer
The other end of Same Name of Ends, inductance L2 connects one end of power switch S5 and one end of power switch S6 simultaneously, power switch S7's
One end is connected with one end of power switch S8, another input terminal of public connecting end as the second bridge converter, and connection is high
The different name end of the tertiary winding of frequency isolating transformer, the other end of power switch S5 connect simultaneously power switch S7 the other end,
One end of capacitor C2 and one end of inductance L3, an output end of the other end of inductance L3 as the second bridge converter, connection
The pin 1 of second single-pole double-throw switch (SPDT) J2, the other end of power switch S6 connect the other end and capacitor of power switch S8 simultaneously
The other end of C2, another output of the public connecting end as the second bridge converter.
7. single-phase high frequency isolated form variable topology AC-DC converter according to claim 2, which is characterized in that DC side
LC filter includes inductance L0 and capacitor C0；
An input terminal of the one end of inductance L0 as DC side LC filter connects the public affairs of power switch S1 and power switch S3
The other end of connecting pin altogether, inductance L0 connects one end of capacitor C0 and the pin 3 of the second single-pole double-throw switch (SPDT) J2, capacitor C0 simultaneously
Another input terminal as DC side LC filter of the other end, connection power switch S7's and power switch S8 is commonly connected
End, while the pin 3 of the first single-pole double-throw switch (SPDT) J1 is connected, it is double that the pin 2 of the first single-pole double-throw switch (SPDT) J1 connects the second hilted broadsword
Direct-flow positive pole output end of the public connecting end of the pin 2 of throw switch J2, inductance L0 and capacitor C0 as converter, capacitor C0's
Direct current negative input of the other end as converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910229821.5A CN109768729A (en) | 2019-03-25 | 2019-03-25 | Single-phase high frequency isolated form variable topology AC-DC converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910229821.5A CN109768729A (en) | 2019-03-25 | 2019-03-25 | Single-phase high frequency isolated form variable topology AC-DC converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109768729A true CN109768729A (en) | 2019-05-17 |
Family
ID=66459825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910229821.5A Pending CN109768729A (en) | 2019-03-25 | 2019-03-25 | Single-phase high frequency isolated form variable topology AC-DC converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109768729A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113141010A (en) * | 2021-04-20 | 2021-07-20 | 中国船舶重工集团公司第七一一研究所 | Bipolar DC power supply circuit |
| CN113141121A (en) * | 2021-04-22 | 2021-07-20 | 东南大学 | Current source type high-frequency isolation matrix type cascade converter and control method |
| WO2022241774A1 (en) * | 2021-05-21 | 2022-11-24 | 华为技术有限公司 | Alternating current/direct current power conversion system |
| EP4336718A1 (en) * | 2022-09-09 | 2024-03-13 | Infineon Technologies Austria AG | Switching converter using partial power processing |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008199808A (en) * | 2007-02-14 | 2008-08-28 | Matsushita Electric Ind Co Ltd | System-interconnected inverter arrangement |
| CN102185496A (en) * | 2011-05-20 | 2011-09-14 | 上海交通大学 | AC-DC converter with bidirectional energy flow |
| CN102739056A (en) * | 2012-06-20 | 2012-10-17 | 东南大学 | Asymmetric bidirectional direct-current converter appropriate for high voltage situation |
| CN204205964U (en) * | 2014-09-19 | 2015-03-11 | 广州天逸电子有限公司 | A kind of power supply change-over device of audio-frequency power amplifier |
| CN207664889U (en) * | 2017-12-20 | 2018-07-27 | 浙江联洋机电科技有限公司 | A kind of digitlization inverter for arc welder |
-
2019
- 2019-03-25 CN CN201910229821.5A patent/CN109768729A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008199808A (en) * | 2007-02-14 | 2008-08-28 | Matsushita Electric Ind Co Ltd | System-interconnected inverter arrangement |
| CN102185496A (en) * | 2011-05-20 | 2011-09-14 | 上海交通大学 | AC-DC converter with bidirectional energy flow |
| CN102739056A (en) * | 2012-06-20 | 2012-10-17 | 东南大学 | Asymmetric bidirectional direct-current converter appropriate for high voltage situation |
| CN204205964U (en) * | 2014-09-19 | 2015-03-11 | 广州天逸电子有限公司 | A kind of power supply change-over device of audio-frequency power amplifier |
| CN207664889U (en) * | 2017-12-20 | 2018-07-27 | 浙江联洋机电科技有限公司 | A kind of digitlization inverter for arc welder |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113141010A (en) * | 2021-04-20 | 2021-07-20 | 中国船舶重工集团公司第七一一研究所 | Bipolar DC power supply circuit |
| CN113141121A (en) * | 2021-04-22 | 2021-07-20 | 东南大学 | Current source type high-frequency isolation matrix type cascade converter and control method |
| WO2022241774A1 (en) * | 2021-05-21 | 2022-11-24 | 华为技术有限公司 | Alternating current/direct current power conversion system |
| EP4336718A1 (en) * | 2022-09-09 | 2024-03-13 | Infineon Technologies Austria AG | Switching converter using partial power processing |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109768729A (en) | Single-phase high frequency isolated form variable topology AC-DC converter | |
| CN204391761U (en) | Flexible medium-voltage direct-current power distribution system | |
| CN104702114B (en) | High-frequency-chain bidirectional direct-current transformer with switched capacitor access and control method thereof | |
| CN105305855B (en) | Three-phase isolation type bidirectional AC-DC converter and its control method | |
| CN101521386B (en) | Traction power supply direct hanging type high voltage comprehensive compensation device | |
| CN207184330U (en) | A kind of wide scope Sofe Switch DC transfer circuit | |
| CN110086355B (en) | High-frequency control compensation type controllable alternating current distribution transformer | |
| CN108092371A (en) | Charge and discharge device | |
| CN109861546A (en) | A kind of electric power electric transformer and application control with true bipolarity direct current output ability | |
| CN103208929A (en) | Electronic power transformer based on multi-media card (MMC) | |
| CN105846696B (en) | A kind of two-stage type AC-DC converter and its control method | |
| CN100541993C (en) | Superconducting energy storage bidirectional three-level soft switch DC/DC | |
| CN107786099A (en) | A kind of highly reliable commutator transformer system of segmentation more and its control method | |
| CN102013685A (en) | Transformerless STATCOM (Static Compensator) topological structure based on MMC (Modular Multilevel Converter) | |
| CN108847775A (en) | Novel electric power electric transformer topological structure | |
| CN206117480U (en) | High -low pressure switching circuit of LLC transform output | |
| CN110266194A (en) | A kind of bidirectional DC-DC converter of symmetric resonator | |
| CN107546983B (en) | A kind of high-power high no-load voltage ratio modularization two-way DC converter of isolated form | |
| CN110401352A (en) | A kind of two-way resonance converter | |
| CN204145305U (en) | A kind of novel DC-AC-DC converter being applied to high voltage direct current transmission | |
| CN106849663A (en) | A kind of three level power electronic transformer circuit structures | |
| CN107819403A (en) | A kind of bipolar soft-switching commutator transformer | |
| CN100571006C (en) | Superconducting energy storage bidirectional three-level soft switch DC/DC converter and control method thereof | |
| CN207368884U (en) | A kind of two-way Sofe Switch DC transfer circuit of wide scope | |
| CN105186900A (en) | Five-level transformerless inverter circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190517 |
|
| RJ01 | Rejection of invention patent application after publication |