CN108988656A - A kind of broad stopband high-frequency high-power density inverse method and its system - Google Patents
A kind of broad stopband high-frequency high-power density inverse method and its system Download PDFInfo
- Publication number
- CN108988656A CN108988656A CN201710420639.9A CN201710420639A CN108988656A CN 108988656 A CN108988656 A CN 108988656A CN 201710420639 A CN201710420639 A CN 201710420639A CN 108988656 A CN108988656 A CN 108988656A
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- China
- Prior art keywords
- power density
- broad stopband
- frequency
- inverse method
- power
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- 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.)
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Classifications
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- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/003—Constructional details, e.g. physical layout, assembly, wiring or busbar connections
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- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
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- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/10—Photovoltaic [PV]
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
- Dc-Dc Converters (AREA)
Abstract
The present invention is a kind of broad stopband high-frequency high-power density inverse method and a broad stopband photovoltaic miniature inverter product.It organically blends by the way that broad stopband high-frequency high-power density inversion transformation technique, double buck high frequency topological transformation technologies, OFDM monitoring for power line carrier technology, cloud intelligent Fault Diagnosis Technique etc. are multi-disciplinary, develops a kind of broad stopband high-frequency high-power density inverse method and product of the features such as realizing high power density, low cost, broad stopband application, intelligent monitoring.Through the invention, it can be by photovoltaic miniature inverter product on the basis of current cost, decline 50%, substantially close to the string type inverter price of the market mainstream, the characteristics of once this product completes volume production, there is very big market competition advantage, be particularly suitable for our domestic distributed photovoltaic markets at present, forceful impacts will be formed to traditional type inverter, and change the pattern of current China's Miniature inverter in the market.
Description
Technical field
The present invention relates to a kind of broad stopband high-frequency high-power density inverse method and its systems.
Background technique
Double buck high-frequency inversion technologies have pertinent literature report to realize electric energy inversion in the fuel cell system before this,
3kw power realizes 99% transfer efficiency under 250kHz switching frequency.
Non-isolated grid-connected inverter needs to eliminate by addition additional circuit there are the essential defect of common mode leakage current
Leakage current, such as H5 bridge topology, Heric is topological, H6 bridge is topological and various variant structures, since external photovoltaic enterprise is to some topologys
Patent protection causes domestic enterprise that can only solve common mode leakage current using some more complex circuit structures.
Double buck inversion transformation techniques solve common mode leakage current, and power bridge freewheel current on the basis of not increasing circuit
Not by anti-paralleled diode, can be used silicon carbide diode solve it is reversed extensive in original power device anti-paralleled diode
Multiple problem is suitble to non-isolation type, the HF switch feature of inverter.
Summary of the invention
The present invention is the micro- inversion products of the photovoltaic based on broad stopband device of a complete novelty, using 200KHz high frequency
Two-level configuration, the features such as keeping the original high power density of Miniature inverter, independent control, component level monitoring, intelligent O&M
On the basis of, use for reference traditional group string inverter topology simply, component number is few, advantage at low cost, and it is micro- to complete high performance-price ratio
Type inverter product development.
1) realization of high efficiency transformation of electrical energy
As power device switching frequency improves, switching loss is also increased accordingly, and to realize the complete machine effect of this project 96%
Rate, there are larger difficulty for routine techniques.Silicon carbide, gallium nitride wide-bandgap power devices have switching speed is fast, conducting resistance is small,
The features such as zero reverse recovery time, has been applied in special occasions such as military project, high-temperature high-frequency special power supplies.The present invention uses
Silicon carbide diode and gallium nitride Mosfet substitute traditional Si power device, by driving and protection circuit, mounting process, be
System parameter is designed, to meet the requirement of wide-bandgap power devices；Simultaneously in order to further enhance system effectiveness, prime
Boost booster circuit uses quasi-resonance soft switch technology, the natural resonance formed using Mosfet parasitic capacitance and boost inductance,
It realizes that power device no-voltage is open-minded by capture voltage over zero signal, reduces devices switch loss.
2) solution of common mode drain current suppressing problem
Inevitably there is common mode current leakage due to circuit essence defect in conventional non-isolated string type inverter,
Each producer inhibits leakage current in order to solve this problem, by increasing additional control circuit, causes system complexity to increase, cost
Increase.The present invention is using double buck inversion transformation techniques, on the basis of not increasing additional circuit, inhibits common mode electricity by control technology
Pressure, to solve current leakage.
Detailed description of the invention
Fig. 1 is control panel outside drawing of the invention
Specific embodiment
1) for the first time using double buck high-frequency convertor technologies, in order to realize high power density, the present invention in inverter product
Switching frequency is increased to 200kHz or so from traditional group string inverter 20kHz, reduces grid-connected end passive device volume；Using
The novel silicon device such as cool mosfet can be realized the switching frequency of 200kHz or so, but mosfet power tube parasitism is anti-
A series of problems, such as parallel diode reverse characteristic is poor, causes EMC interference, low efficiency, false triggering, therefore traditional string type is inverse
Become device H bridge structure to be no longer applicable in this project.The present invention uses novel double buck high-frequency inversion technologies, then gathers silicon carbide function
Rate device realizes high power density, high efficiency Miniature inverter design requirement.It is inverse to have evaded non-isolation type photovoltaic for the program simultaneously
Become device current leakage, the simply non-isolated scheme of circuit can be used in prime.
2) prime booster circuit still uses Boost structure, and switching frequency is increased to 200kHz or so from 20kHz, reduces
The volume and cost of energy storage inductor, capacitor, with the raising of frequency, conversion efficiency will be continued to decline, and the present invention uses quasi-resonance
Soft switch technique realizes the Sofe Switch of power switch using the resonance of distribution capacity on the basis of additionally not increasing component,
By using novel gallium nitride power device, further raising efficiency.
3) optimization design high-gradient magnetism element needs to meet system high-frequency, high power density design object from magnetism
Device material, manufacture craft optimize, and the present invention uses planar transformer technology, sufficiently reduce passive device volume.
Claims (4)
1. a kind of broad stopband high-frequency high-power density inverse method, which is characterized in that used for the first time in Miniature inverter product
Double buck high-frequency convertor technologies.
2. a kind of broad stopband high-frequency high-power density inverse method according to claim 1, which is characterized in that using carbonization
Silicon diode and gallium nitride Mosfet substitute traditional Si power device.
3. a kind of broad stopband high-frequency high-power density inverse method according to claim 1, which is characterized in that prime boosting
Circuit still uses Boost structure, utilizes distribution on the basis of additionally not increasing component with quasi-resonance soft switch technology
The resonance of capacitor realizes the Sofe Switch of power switch, by using novel gallium nitride power device, further raising efficiency.
4. a kind of broad stopband high-frequency high-power density inverse method according to claim 1, which is characterized in that the present invention adopts
With planar transformer technology, sufficiently reduce passive device volume.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710420639.9A CN108988656A (en) | 2017-05-31 | 2017-05-31 | A kind of broad stopband high-frequency high-power density inverse method and its system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710420639.9A CN108988656A (en) | 2017-05-31 | 2017-05-31 | A kind of broad stopband high-frequency high-power density inverse method and its system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108988656A true CN108988656A (en) | 2018-12-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710420639.9A Pending CN108988656A (en) | 2017-05-31 | 2017-05-31 | A kind of broad stopband high-frequency high-power density inverse method and its system |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102710133A (en) * | 2012-06-12 | 2012-10-03 | 阳光电源股份有限公司 | Seven-level circuit, a grid-connected inverter and modulation method and device of seven-level circuit |
| CN102868174A (en) * | 2012-08-31 | 2013-01-09 | 天津理工大学 | Photovoltaic grid-connected system for restraining chaos based on DSP (Digital Signal Processor) as well as working method thereof |
| CN103001524A (en) * | 2011-09-09 | 2013-03-27 | 阳光电源股份有限公司 | Single-phase inverter |
| CN203896538U (en) * | 2014-03-20 | 2014-10-22 | 浙江駻捷新能源科技有限公司 | LED driving power source employing single switch tube and two Buck-Boost circuits in cascade connection |
| US20150162834A1 (en) * | 2013-12-05 | 2015-06-11 | Fairchild Semiconductor Corporation | Dual-Mode Voltage Doubling Buck Converter With Smooth Mode Transition |
| CN104937680A (en) * | 2012-10-19 | 2015-09-23 | 三菱电机株式会社 | Inverter device, transformer, and transformer manufacturing method |
| CN106549594A (en) * | 2017-01-20 | 2017-03-29 | 福州大学 | A kind of integrated three bridge arms dual Buck inverter of aspergillus ficuum magnetic and its control method |
-
2017
- 2017-05-31 CN CN201710420639.9A patent/CN108988656A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103001524A (en) * | 2011-09-09 | 2013-03-27 | 阳光电源股份有限公司 | Single-phase inverter |
| CN102710133A (en) * | 2012-06-12 | 2012-10-03 | 阳光电源股份有限公司 | Seven-level circuit, a grid-connected inverter and modulation method and device of seven-level circuit |
| CN102868174A (en) * | 2012-08-31 | 2013-01-09 | 天津理工大学 | Photovoltaic grid-connected system for restraining chaos based on DSP (Digital Signal Processor) as well as working method thereof |
| CN104937680A (en) * | 2012-10-19 | 2015-09-23 | 三菱电机株式会社 | Inverter device, transformer, and transformer manufacturing method |
| US20150162834A1 (en) * | 2013-12-05 | 2015-06-11 | Fairchild Semiconductor Corporation | Dual-Mode Voltage Doubling Buck Converter With Smooth Mode Transition |
| CN203896538U (en) * | 2014-03-20 | 2014-10-22 | 浙江駻捷新能源科技有限公司 | LED driving power source employing single switch tube and two Buck-Boost circuits in cascade connection |
| CN106549594A (en) * | 2017-01-20 | 2017-03-29 | 福州大学 | A kind of integrated three bridge arms dual Buck inverter of aspergillus ficuum magnetic and its control method |
Non-Patent Citations (1)
| Title |
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| 闫琪: "《基于GaN的双Buck并网逆变器的损耗分析及共模电流抑制研究》", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》 * |
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Addressee: Nanjing poly Kun Networking Technology Co. Ltd. Document name: Notification of Publication and of Entering the Substantive Examination Stage of the Application for Invention |
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