CN108696144A - The modulation compensated circuit of interleaving inverse excitation type DC/DC hardware - Google Patents
The modulation compensated circuit of interleaving inverse excitation type DC/DC hardware Download PDFInfo
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- CN108696144A CN108696144A CN201810830241.7A CN201810830241A CN108696144A CN 108696144 A CN108696144 A CN 108696144A CN 201810830241 A CN201810830241 A CN 201810830241A CN 108696144 A CN108696144 A CN 108696144A
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- 230000005284 excitation Effects 0.000 title claims abstract description 69
- 239000003990 capacitor Substances 0.000 claims abstract description 9
- 230000003139 buffering effect Effects 0.000 claims description 8
- 238000013139 quantization Methods 0.000 claims description 6
- 238000000465 moulding Methods 0.000 claims description 2
- 238000011217 control strategy Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 210000004709 eyebrow Anatomy 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33538—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only of the forward type
- H02M3/33546—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only of the forward type with automatic control of the output voltage or current
- H02M3/33553—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only of the forward type with automatic control of the output voltage or current with galvanic isolation between input and output of both the power stage and the feedback loop
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/24—Arrangements for preventing or reducing oscillations of power in networks
-
- H02J3/383—
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0016—Control circuits providing compensation of output voltage deviations using feedforward of disturbance parameters
-
- 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
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
- Inverter Devices (AREA)
Abstract
The present invention relates to a kind of modulation compensated circuits of interleaving inverse excitation type DC/DC hardware, including photovoltaic panel, DC bus capacitor, interleaving inverse excitation type DC/DC converters, inverter bridge, output filter, power grid and hardware compensating module;The present invention's has the function of that input side and outlet side are dielectrically separated from, it is big by electromagnetic interference that circuit in practice can be coped with, it is wide to be applicable in voltage range for the situation that circuit components have differences, broad application temperature range improves existing interleaving inverse excitation type converter switching tube and works inconsistent present situation;The present invention is only the increase in a modulated signal compensation circuit, will not increase the volume of existing topological structure, ensures that converter output waveform is more stablized, more smooth voltage is provided for rear class inverter circuit, moreover it is possible to effectively reduce the fluctuation of output power.
Description
Technical field
The present invention relates to solar energy generation technology fields, especially in the design of the photovoltaic parallel in system of two-stage type, propose
A kind of modulation compensated circuit of interleaving inverse excitation type DC/DC hardware.
Background technology
Solar energy is widely used in power industry as a kind of clean energy resource, in two-stage type small-power photovoltaic generating system
In research, often using interleaving inverse excitation type converter (interleaved flyback inverter) as primary DC/DC circuit liters
Laminate section, and the output voltage of interleaving inverse excitation type DC/DC circuits fluctuates situation, directly affects efficiency and the change of rear class inverter circuit
Transsexual energy, so being one of the difficult point of system design to the control of interleaving inverse excitation type circuit.Common interleaving inverse excitation type converter
Control strategy is related to its operating mode, and the control of DCM patterns depends on MPPT link, the grid current obtained by MPPT
Compared with triangular carrier, you can obtain SPWM drive signals, this control strategy is simple, but is only limitted to DCM patterns;BCM moulds
The control of formula is controlled using current spike, but this control is more complicated compared to the control strategy of DCM patterns, is unfavorable for promoting.
Document T.Lodh, N.Pragallapati and V.Agarwal ,s "An improved control scheme
for interleaved flyback converter based micro-inverter to achieve high
efficiency,"2016 IEEE 1st International Conference on Power Electronics,
Intelligent Control and Energy Systems (ICPEICES), Delhi, 2016, pp.1-6. propose one kind
Declined the optimal control policy of inverter based on alternating expression flyback, which is the suitable operation of various instantaneous powers matching
Pattern, to improve the working efficiency of circuit, but requirement of this control strategy to the processor speed of service is quite high, improves
The cost of detection circuit, and control method is more complicated, be unfavorable for using on a large scale.
Invention content
The present invention proposes a kind of modulation compensated circuit of interleaving inverse excitation type DC/DC hardware, solves prior art interleaving inverse excitation type
The problem of output voltage is uneven, output-power fluctuation.
In order to achieve the above object, technical scheme is as follows:
The modulation compensated circuit of interleaving inverse excitation type DC/DC hardware, it is characterised in that:Including photovoltaic panel, DC bus capacitor, interlock
Inverse-excitation type DC/DC converters, inverter bridge, output filter, power grid and hardware compensating module;
The photovoltaic panel is in parallel with DC bus capacitor, interleaving inverse excitation type DC/DC converters;
The interleaving inverse excitation type DC/DC converters include the first inverse excitation type converters that two independent, parameter is consistent and
Second inverse excitation type converter;First inverse excitation type converter includes transformer T1, the master power switch SW11 of transformer T1 primary sides,
With the antiparallel body diode D11 of master power switch SW11, rectifier diode D1, the buffering capacitance C1 of transformer T1 secondary sides;
Second inverse excitation type converter includes transformer T2, the master power switch SW21 of transformer T2 primary sides and master power switch SW21
Antiparallel body diode D21, rectifier diode D2, the buffering capacitance C2 of transformer T2 secondary sides;
The inverter bridge includes single-phase full bridge formula inverter circuit, the input side and interleaving inverse excitation of single-phase full bridge formula inverter circuit
The output connection of formula DC/DC converters, output are connect with output filter, power grid;
The hardware compensating module includes two close cycles return circuit module, electric current rectification module, the shared compensating module of load and letter
Number modulation module;The input of electric current rectification module is the electric current of interleaving inverse excitation type DC/DC converters, the output connection of electric current rectification module
Compensating module input is shared in load, loads shared compensating module output and two close cycles circuit output connection signal modulation module is defeated
Enter, signal modulation module output is the final duty ratio for controlling switching tube.
Further, the two close cycles return circuit module includes current compensation link and electric voltage feed forward link, current compensation ring
Section input is connect with current collection circuit, and the input of electric voltage feed forward link is connect with voltage collection circuit.
Further, it includes filter module and compensation quantization modules that compensating module is shared in the load, and filter module is defeated
Enter side to connect with electric current rectification module, outlet side is connect with compensation quantization modules.
Further, the external electric parameter acquisition module of the modulation compensated circuit of interleaving inverse excitation type DC/DC hardware, protection
Circuit, alarm module and microprocessor;
The electric parameter acquisition module includes input voltage and input current acquisition module, output voltage and output current
Acquisition module, network voltage and power network current acquisition module, electric parameter acquisition module are separately connected photovoltaic panel input, interlock instead
Excitation type converter exports and grid side;
The protection circuit includes relay and electromagnetic drive, and relay is for connecting filter circuit and power grid, relay
When device is closed, system grid connection, when relay disconnects, system off-network;Electromagnetic drive is connect with microprocessor.The present invention's is beneficial
Effect:
1. the present invention interleaving inverse excitation type DC/DC hardware modulation compensated circuit itself have input side and outlet side insulation every
From effect, it is big by electromagnetic interference to cope with circuit in practice, the situation that circuit components have differences, and is applicable in voltage model
Enclose width, broad application temperature range improves existing interleaving inverse excitation type converter switching tube and works inconsistent present situation.
2. the modulation compensated circuit of interleaving inverse excitation type DC/DC hardware of the present invention is only the increase in a modulated signal compensation electricity
Road will not increase the volume of existing topological structure, ensure that converter output waveform is more stablized, provided more for rear class inverter circuit
Add smooth voltage, moreover it is possible to effectively reduce the fluctuation of output power.
Description of the drawings
Fig. 1 is the photovoltaic parallel in system block diagram with the modulation compensated circuit of interleaving inverse excitation type DC/DC hardware of the present invention;
Fig. 2 is that the photovoltaic parallel in system main circuit with the modulation compensated circuit of interleaving inverse excitation type DC/DC hardware of the present invention is former
Reason figure;
Fig. 3 is the schematic diagram of the modulation compensated circuit of interleaving inverse excitation type DC/DC hardware of the present invention;
Fig. 4 is the photovoltaic parallel in system circuit theory with the modulation compensated circuit of interleaving inverse excitation type DC/DC hardware of the present invention
Figure;
Specific implementation mode
Below by specific implementation mode combination attached drawing, invention is further described in detail.Wherein different embodiments
Middle similar component uses associated similar element numbers.In the following embodiments, many datail descriptions be in order to
The application is better understood.However, those skilled in the art can be without lifting an eyebrow recognize, which part feature
It is dispensed, or can be substituted by other elements, material, method in varied situations.In some cases, this Shen
Please it is relevant some operation there is no in the description show or describe, this is the core in order to avoid the application by mistake
More descriptions are flooded, and to those skilled in the art, these relevant operations, which are described in detail, not to be necessary, they
It can completely understand relevant operation according to the general technology knowledge of description and this field in specification.
Each designation is as follows in Fig. 2, Fig. 3, Fig. 4:
Vpv --- photovoltaic panel output voltage;
Cdc --- DC bus capacitor;
T1, T2 --- the first inverse excitation type converter and the corresponding transformer of the second inverse excitation type converter;
SW11, SW21 --- the first inverse excitation type converter and the corresponding main power tube of the second inverse excitation type converter;
SW12, SW22 --- the first inverse excitation type converter and the corresponding auxiliary power pipe of the second inverse excitation type converter;
D11, D21 --- with the antiparallel body diode of main power tube;
D12, D22 --- with the antiparallel body diode of auxiliary power pipe;
D1, D2 --- the rectifier diode on transformer T1, T2 pair side;
C1, C2 --- the buffering capacitance on transformer T1, T2 pair side;
S1, S2, S3, S4 --- converter bridge switching parts pipe;
Lac, Cac --- exchange side filter inductance, exchange side filter capacitor;
Vo --- interleaving inverse excitation type passes through the output voltage of buffering capacitance;
D, △ d --- inverse-excitation type main switch duty ratio a reference value, duty ratio compensation rate;
D1, d2 --- inverse-excitation type 1, the corresponding duty ratio of 2 main power tube of inverse-excitation type;
Im1, im2 --- flow through the electric current of inductance in converter;
Ipv1, ipv2 --- branch current is inputted after correction;
△ ipv, △ ipvref --- error, reference error between input current;
The present invention is further detailed below in conjunction with the accompanying drawings, shown in Fig. 1-Fig. 4, interleaving inverse excitation type DC/DC
The modulation compensated circuit of hardware, including photovoltaic panel, DC bus capacitor, interleaving inverse excitation type DC/DC converters, inverter bridge, output filtering
Device, power grid (or load) and hardware compensating module;
The photovoltaic panel makees entire circuit input, in parallel with DC bus capacitor, interleaving inverse excitation type DC/DC converters;
The interleaving inverse excitation type DC/DC converters include the first inverse excitation type converters that two independent, parameter is consistent and
Second inverse excitation type converter;First inverse excitation type converter includes transformer T1, the master power switch SW11 of transformer T1 primary sides,
With the antiparallel body diode D11 of master power switch SW11, rectifier diode D1, the buffering capacitance C1 of transformer T1 secondary sides;
Second inverse excitation type converter includes transformer T2, the master power switch SW21 of transformer T2 primary sides and master power switch SW21
Antiparallel body diode D21, rectifier diode D2, the buffering capacitance C2 of transformer T2 secondary sides;
Inverter bridge includes single-phase full bridge formula inverter circuit, the input side and interleaving inverse excitation type of single-phase full bridge formula inverter circuit
The output connection of DC/DC converters, output are connect with output filter, power grid, realize simultaneously net operation;
Hardware compensating module includes two close cycles return circuit module, electric current rectification module, the shared compensating module of load and signal tune
Molding block;The input of electric current rectification module is the electric current of interleaving inverse excitation type DC/DC converters, the output connection load of electric current rectification module
Shared compensating module input loads and shares compensating module output and two close cycles circuit output connection signal modulation module input, letter
The output of number modulation module for final control switching tube duty ratio.
Two close cycles return circuit module includes current compensation link and electric voltage feed forward link, and the input of current compensation link is adopted with electric current
Collector connects, and the input of electric voltage feed forward link is connect with voltage collection circuit;Current compensation link and electric voltage feed forward link are common
Determining modulation signal, control switching tube conducting, reaches output waveform requirement.
Electric current rectification module is that the electric current during interleaving inverse excitation type DC/DC converter switches pipes are connected does signal period
The current detecting of average treatment, interleaving inverse excitation type DC/DC converters is connect with input current rectification module.
It includes filter module and compensation quantization modules that compensating module is shared in load, and filter module input side corrects mould with electric current
Block connects, and outlet side is connect with quantization modules are compensated, using the error of two branch input currents to the tune of each branch switch pipe
Signal processed compensates, and ensures the consistency of input switch pipe turn-on time, stabilization transform device output voltage.
Signal modulation module is a modulation circuit, is compensated to duty ratio a reference value using duty ratio compensation rate, most
New modulated signal, control interleaving inverse excitation type variator work are exported eventually.
The also external electric parameter acquisition module of the modulation compensated circuit of interleaving inverse excitation type DC/DC hardware, protection circuit, alarm mould
Block and microprocessor;Electric parameter acquisition module includes input voltage and input current acquisition module, output voltage and output
Current acquisition module, network voltage and power network current acquisition module, electric parameter acquisition module are separately connected photovoltaic panel input, hand over
Wrong inverse excitation type converter output and grid side;
The protection circuit includes relay and electromagnetic drive, and relay is for connecting filter circuit and power grid, relay
When device is closed, system is in and net state, and when relay disconnects, system is in off-network state;Electromagnetic drive and microprocessor
Connection.
The modulation compensated circuit diagram of hardware of the present invention as shown in Figure 3, current compensation and electric voltage feed forward are accounted for for generating
Sky than a reference value, electric current rectifier according to flowing through the electric current of inductance and corresponding duty ratio in two single-end flyback converters,
Input branch current is recalculated, the error and reference error between input current obtain a duty by load compensator
Than compensation rate, in conjunction with duty ratio base value, signal modulation module output is the final duty ratio for controlling switching tube.
The course of work of the present invention is described below:
The present invention realizes the compensation to interleaving inverse excitation type converter switching tube Continuity signal, keeps output voltage fluctuation small.
Current compensation circuit and electric voltage feed forward circuit evolving duty ratio a reference value d first;Its primary current rectifier is according to flowing through converter
Electric current im1, im2 and duty ratio d1, d2 of middle inductance, to input branch current recalculate, obtain ipv1, ipv2, by ipv1,
Error delta ipv and reference error △ ipvref between ipv2 input currents obtain a duty ratio compensation by load compensator
Measure △ d;Finally, in conjunction with duty ratio base value d and compensation rate △ d, microcontroller can export inverse excitation type converter duty ratio d11,
d12,d21,d22;When having overvoltage, overcurrent condition in circuit, microcontroller exports electromagnetism cut-off signal, no longer carries out grid-connected behaviour
Make, protects power grid operation.
The compensation rate state of 1 different situations of table
As can be seen from Table 1, the magnitude relationship between ipv1 and ipv2 determines the change direction of compensation rate, therefore worked
Cheng Wei:
Electric current ipv1> after correction;Ipv2 then has △ ipv>0, after being calculated with reference error value △ ipvref, △ ipv 's <
0, it loads and shares compensator according to the value of △ ipv ', calculate suitable compensation rate △ d, and have △ d<0, illustrate inverse-excitation type at this time
The output voltage of 2 converter of 1 converter and inverse-excitation type differs greatly, and in switching, output voltage fluctuation increases, therefore answers
Reduce the conducting of 1 converter of inverse-excitation type, the conducting for increasing by 2 converter of inverse-excitation type enables d11 reduce in conjunction with a reference value d, and d21 increases
Add;
2) the electric current ipv1=ipv2 after correcting, then have △ ipv=0, after being calculated with reference error value △ ipvref, △
Ipv '=0, compensation rate △ d=0 illustrate that inverse excitation type converter output voltage fluctuation at this time is small, should keep current switch states, enable
D11, d21 are remained unchanged;
3) the electric current ipv1< after correcting;Ipv2 then has △ ipv<0, after being calculated with reference error value △ ipvref, △ ipv '
>0, it loads and shares compensator according to the value of △ ipv ', calculate suitable compensation rate △ d, and have △ d>0, by 1) can similarly obtain,
The output difference of 2 converter of inverse-excitation type 1 and inverse-excitation type is big at this time, and when switching switchs, output voltage fluctuation increases, and should reduce flyback
The shutdown of 1 converter of formula, the shutdown for increasing by 2 converter of inverse-excitation type enable d11 reduce in conjunction with a reference value d, and d21 increases.
Use above specific case is illustrated the present invention, is merely used to help understand the present invention, not limiting
The system present invention.For those skilled in the art, according to the thought of the present invention, can also make several simple
It deduces, deform or replaces.
Claims (4)
1. the modulation compensated circuit of interleaving inverse excitation type DC/DC hardware, it is characterised in that:Including photovoltaic panel, DC bus capacitor, interlock instead
Swash formula DC/DC converters, inverter bridge, output filter, power grid and hardware compensating module;
The photovoltaic panel is in parallel with DC bus capacitor, interleaving inverse excitation type DC/DC converters;
The interleaving inverse excitation type DC/DC converters include two the first inverse excitation type converters and second independent, parameter is consistent
Inverse excitation type converter;First inverse excitation type converter includes transformer T1, the master power switch SW11 of transformer T1 primary sides and master
The antiparallel body diode D11 of power switch SW11, rectifier diode D1, the buffering capacitance C1 of transformer T1 secondary sides;Second
Inverse excitation type converter includes transformer T2, the master power switch SW21 of transformer T2 primary sides, with master power switch SW21 instead simultaneously
The body diode D21 of connection, rectifier diode D2, the buffering capacitance C2 of transformer T2 secondary sides;
The inverter bridge includes single-phase full bridge formula inverter circuit, the input side and interleaving inverse excitation type of single-phase full bridge formula inverter circuit
The output connection of DC/DC converters, output are connect with output filter, power grid;
The hardware compensating module includes two close cycles return circuit module, electric current rectification module, the shared compensating module of load and signal tune
Molding block;The input of electric current rectification module is the electric current of interleaving inverse excitation type DC/DC converters, the output connection load of electric current rectification module
Shared compensating module input loads and shares compensating module output and two close cycles circuit output connection signal modulation module input, letter
The output of number modulation module for final control switching tube duty ratio.
2. the modulation compensated circuit of interleaving inverse excitation type DC/DC hardware according to claim 1, which is characterized in that described pair is closed
Loop back path module includes current compensation link and electric voltage feed forward link, and the input of current compensation link is connect with current collection circuit,
The input of electric voltage feed forward link is connect with voltage collection circuit.
3. the modulation compensated circuit of interleaving inverse excitation type DC/DC hardware according to claim 2, it is characterised in that:The load
Shared compensating module includes filter module and compensation quantization modules, and filter module input side is connect with electric current rectification module, is exported
Side is connect with compensation quantization modules.
4. a kind of modulation compensated circuit of interleaving inverse excitation type DC/DC hardware according to claim 1, it is characterised in that:It is described
The external electric parameter acquisition module of the modulation compensated circuit of interleaving inverse excitation type DC/DC hardware, protection circuit, alarm module and miniature place
Manage device;
The electric parameter acquisition module includes input voltage and input current acquisition module, output voltage and output current acquisition
Module, network voltage and power network current acquisition module, electric parameter acquisition module are separately connected photovoltaic panel input, interleaving inverse excitation type
Converter exports and grid side;
The protection circuit includes relay and electromagnetic drive, and for connecting filter circuit and power grid, relay closes relay
When conjunction, system grid connection, when relay disconnects, system off-network;Electromagnetic drive is connect with microprocessor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810830241.7A CN108696144B (en) | 2018-07-24 | 2018-07-24 | Interleaved flyback DC/DC hardware modulation compensation circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810830241.7A CN108696144B (en) | 2018-07-24 | 2018-07-24 | Interleaved flyback DC/DC hardware modulation compensation circuit |
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| CN108696144A true CN108696144A (en) | 2018-10-23 |
| CN108696144B CN108696144B (en) | 2023-11-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111869086A (en) * | 2018-12-29 | 2020-10-30 | 华为技术有限公司 | Inverter |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20140004379A (en) * | 2012-07-02 | 2014-01-13 | 전남대학교산학협력단 | Interleaved flyback converter for led constant-current control |
| CN106787911A (en) * | 2017-02-14 | 2017-05-31 | 苏州大学 | A kind of miniature photovoltaic grid-connected inverter and control method |
| WO2018120483A1 (en) * | 2016-12-27 | 2018-07-05 | 广东百事泰电子商务股份有限公司 | Pfc interleaved flyback full bridge based intelligent sine-wave voltage conversion circuit |
| CN208461700U (en) * | 2018-07-24 | 2019-02-01 | 西安工业大学 | A kind of hardware modulation compensated circuit in photovoltaic parallel in system |
-
2018
- 2018-07-24 CN CN201810830241.7A patent/CN108696144B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20140004379A (en) * | 2012-07-02 | 2014-01-13 | 전남대학교산학협력단 | Interleaved flyback converter for led constant-current control |
| WO2018120483A1 (en) * | 2016-12-27 | 2018-07-05 | 广东百事泰电子商务股份有限公司 | Pfc interleaved flyback full bridge based intelligent sine-wave voltage conversion circuit |
| CN106787911A (en) * | 2017-02-14 | 2017-05-31 | 苏州大学 | A kind of miniature photovoltaic grid-connected inverter and control method |
| CN208461700U (en) * | 2018-07-24 | 2019-02-01 | 西安工业大学 | A kind of hardware modulation compensated circuit in photovoltaic parallel in system |
Non-Patent Citations (1)
| Title |
|---|
| 张凤阁等: "交错反激式光伏并网微逆变器的控制器实现", 电工技术学报, no. 05 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111869086A (en) * | 2018-12-29 | 2020-10-30 | 华为技术有限公司 | Inverter |
| CN111869086B (en) * | 2018-12-29 | 2022-07-12 | 华为数字能源技术有限公司 | Inverter |
| US11637431B2 (en) | 2018-12-29 | 2023-04-25 | Huawei Digital Power Technologies Co., Ltd. | Inverter |
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| Publication number | Publication date |
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| CN108696144B (en) | 2023-11-28 |
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