CN103580525A - Minitype grid-connected inverter of active LC absorption network - Google Patents
Minitype grid-connected inverter of active LC absorption network Download PDFInfo
- Publication number
- CN103580525A CN103580525A CN201210284469.3A CN201210284469A CN103580525A CN 103580525 A CN103580525 A CN 103580525A CN 201210284469 A CN201210284469 A CN 201210284469A CN 103580525 A CN103580525 A CN 103580525A
- Authority
- CN
- China
- Prior art keywords
- active
- network
- absorbs
- excitation type
- inverse excitation
- 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
Images
Classifications
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/14—District level solutions, i.e. local energy networks
Landscapes
- Inverter Devices (AREA)
Abstract
The invention discloses a minitype grid-connected inverter of an active LC absorption network and belongs to the technical field of new energy resources. The minitype grid-connected inverter is composed of three main parts which are an active LC absorption network part, a DC transformer part and an H-bridge inverter circuit part.
Description
Technical field
What the present invention relates to is the miniature grid-connected inverter that a kind of active LC absorbs network, belongs to technical field of new energies, the particularly miniature inversion transformation technique in parallel network power generation field.
Background technology
Parallel network power generation technology refer to the delivery of electrical energy that utilizes solar power generation and by photovoltaic combining inverter, solar energy is sent on electrical network for the technology of load.Grid-connected photovoltaic system comprises distributed photovoltaic power generation system and centralized photovoltaic generating system.Centralized photovoltaic generation, first by being connected in parallel after solar photovoltaic assembly series connection, so that higher voltage and power to be provided, arrives electric energy concentration of transmissions by combining inverter the mode of electrical network again; Distributed photovoltaic power generation is for centralized photovoltaic generation, distributed photovoltaic power generation refers to that every inverter possesses maximal power tracing function simultaneously into each solar photovoltaic assembly is equipped with separately the directly mode to electrical network by delivery of electrical energy of a combining inverter.With respect to centralized fashion, distributed photovoltaic power generation has that system extension is flexible, reliability is high, generating efficiency advantages of higher.
Photovoltaic combining inverter is as the interface arrangement of photovoltaic module and electrical network, convert the electric energy of photovoltaic cell to AC energy and be transferred on electrical network, in grid-connected photovoltaic system, playing vital effect, is the core of grid-connected type photovoltaic system power conversion and control.The height of its efficiency, the quality of reliability will directly affect performance and the investment of whole photovoltaic system.Miniature inverter is applied to photovoltaic parallel in system, corresponding every photovoltaic module is installed a Miniature inverter, allow like this one of every photovoltaic module Corresponding matching there is independently straight/alternating current transformation function and MPPT function, thereby effectively overcome the defect of centralized photovoltaic combining inverter, and it has advantages of ownly unique, become direction and the focus of photovoltaic combining inverter research and development.
The main circuit of Miniature inverter can be consulted the thesis for the doctorate of the Kjaer publishing for 2005, pp.51-52,4.3.2 & 4.3.3 " Flyback converter with LF DC-AC inverter ".United States Patent (USP) " Self-latching H-bridge system and apparatus " (Patent No.6,617,913, Unisys, 2001) has proposed to be applied to the mixing H bridge (output is connected with direct current machine) of DC MOTOR CONTROL.The United States Patent (USP) 7 of 2009, the topology of the Miniature inverter that 796,412 " Method and apparatus for converting direct current to alternating current " have proposed a kind of " absorption of active clamp leakage inductance energy, flyback topology, H bridge circuit ".This patent, by the output that mixes H bridge is directly connected with electrical network, adopts " reduction voltage circuit leakage inductance energy absorbs, flyback is topological, mix H bridge circuit ", has realized the further lifting of the security performance of Miniature inverter.
Summary of the invention
One object of the present invention, is to provide the miniature grid-connected inverter that a kind of active LC absorbs network, and this miniature grid-connected inverter is comprised of three parts:
1. active LC absorbs network portion;
2. DC converter part;
3.H bridge inverter circuit part.
Accompanying drawing explanation
Accompanying drawing 1 is the circuit diagram that a kind of active LC of the present invention absorbs the miniature grid-connected inverter of network
Reference numeral
The active LC of 10-absorbs network; 20-first via inverse excitation type converter; 30-the second road inverse excitation type converter; 40-mixing H bridge circuit; 50-electrical network; PV-photovoltaic module; C
m-input capacitance; L
a-active LC absorbs network inductance; S
a-active LC absorbs network switching tube; D
a-active LC absorbs network fly-wheel diode; C
a-active LC absorbs network clamping capacitance; D
a1-first via energy feedback diode; D
a2the-the second road energy feedback diode; T
r1-first via inverse excitation type converter transformer; S
3-first via inverse excitation type converter switching tube; D
1-first via inverse excitation type converter rectifier diode; T
r2the-the second road inverse excitation type converter transformer; S
4the-the second road inverse excitation type converter switching tube; D
2the-the second road inverse excitation type converter rectifier diode; C
o-output capacitance; T
1-mixing H bridge the first thyristor; T
2-mixing H bridge the second thyristor; S
1-mixing H bridge the first switching tube; S
2-mixing H bridge second switch pipe; L
1, L
2-mixing H bridge inductance.
Embodiment
Accompanying drawing 1 is the circuit diagram that a kind of active LC absorbs the miniature grid-connected inverter of network.In accompanying drawing 1, the positive termination input capacitance C of photovoltaic module PV
inone end, active LC absorb network inductance L
aone end, first via inverse excitation type converter transformer T
r1former limit N
p1same Name of Ends and the second road inverse excitation type converter transformer T
r2former limit N
p2same Name of Ends; First via inverse excitation type converter transformer T
r1former limit N
p1non-same polarity meet inverse excitation type converter switching tube S
3one end and first via energy feedback diode D
a1one end; The second road inverse excitation type converter transformer T
r2former limit N
p2non-same polarity meet inverse excitation type converter switching tube S
4one end and the second road energy feedback diode D
a2one end; First via energy feedback diode D
a1the other end and the second road energy feedback diode D
a2the other end be connected to source LC and absorb network switching tube S
aone end and active LC absorb network clamping capacitance C
aone end; Active LC absorbs network switching tube S
athe other end be connected to source LC and absorb network inductance L
athe other end and active LC absorb network sustained diode
aone end; Active LC absorbs network sustained diode
aanother termination input capacitance C
inthe other end, active LC absorb network clamping capacitance C
athe other end, first via inverse excitation type converter switching tube S
3the other end, the second road inverse excitation type converter switching tube S
4the other end and the negative terminal of photovoltaic module PV.
First via inverse excitation type converter transformer T
r1secondary N
s1non-same polarity by inverse excitation type converter rectifier diode D
1meet output capacitance C
oone end; The second road inverse excitation type converter transformer T
r2secondary N
s2non-same polarity by inverse excitation type converter rectifier diode D
1meet output capacitance C
oone end; Output capacitance C
othe other end and first via inverse excitation type converter transformer T
r1secondary N
s1same Name of Ends be connected; Output capacitance C
othe other end and the second road inverse excitation type converter transformer T
r2secondary N
s2same Name of Ends be connected; Output capacitance C
oin parallel with the input that mixes H bridge inverter circuit (40).
Mix H bridge inverter circuit (40) and comprise the first brachium pontis and the second brachium pontis being connected in parallel, wherein the first brachium pontis comprises the first thyristor T being connected in series
1and first power switch tube S
1, correspondingly, the second brachium pontis comprises the second thyristor T being connected in series
2and second power switch tube S
2; The first thyristor T
1with the first power switch tube S
1sequentially be connected in series; The second thyristor T
2with the second power switch tube S
2sequentially be connected in series.Particularly, in the first brachium pontis, the first thyristor T
1negative electrode and the first switching tube S
1drain electrode be connected; In the second brachium pontis, the second thyristor T
2negative electrode and second switch pipe S
2drain electrode be connected; Being connected in parallel of the first brachium pontis and the second brachium pontis is by the first thyristor T
1with the second thyristor T
2the connection of each anode and the first switching tube S
1with second switch pipe S
2the connection of each source electrode realizes; The first thyristor T
1negative electrode and the second thyristor T
2negative electrode be also the first switching tube S
1drain electrode and second switch pipe S
2drain electrode respectively by mixing H bridge inductance L
1, L
2access electrical network 50.
Claims (6)
1. an active LC absorbs the miniature grid-connected inverter of network, by active LC, absorbing network, DC converter and H bridge inverter circuit three parts forms, it is characterized in that, it is the leakage inductance energy that absorbs flyback transformer in inverse excitation type converter that described active LC absorbs the main effect of network, then leakage inductance energy is fed back to the DC bus on the former limit of flyback transformer.
2. DC converter is two-way interleaving inverse excitation type DC converter according to claim 1.
3. active LC absorbs network according to claim 1, and its essence is a DC-DC translation circuit, and drain electrode controlled via or that uncontrollable switch is responsible for inverse excitation type converter is connected, and this controlled or uncontrollable switch, can be diode, thyristor.
4. H bridge inverter circuit is mixing H bridge inverter circuit according to claim 1.
5. DC-DC translation circuit according to claim 3, can be Buck (step-down) or Flyback (flyback) circuit;
6. mix according to claim 4 H bridge inverter circuit and comprise the first brachium pontis and the second brachium pontis being connected in parallel, wherein said the first brachium pontis comprises the first thyristor and the first power switch pipe being connected in series, and described the second brachium pontis comprises the second thyristor and the second power switch pipe being connected in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210284469.3A CN103580525A (en) | 2012-08-10 | 2012-08-10 | Minitype grid-connected inverter of active LC absorption network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210284469.3A CN103580525A (en) | 2012-08-10 | 2012-08-10 | Minitype grid-connected inverter of active LC absorption network |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103580525A true CN103580525A (en) | 2014-02-12 |
Family
ID=50051628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210284469.3A Pending CN103580525A (en) | 2012-08-10 | 2012-08-10 | Minitype grid-connected inverter of active LC absorption network |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103580525A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104796029A (en) * | 2015-01-27 | 2015-07-22 | 南通睿觅新能源科技有限公司 | Micro inverter applied to photovoltaic solar |
| CN105375770A (en) * | 2014-09-01 | 2016-03-02 | 株洲中达特科电子科技有限公司 | Diode-type bias magnet suppression and energy feedback device applied to full-controllable converter |
| CN105375766A (en) * | 2014-09-01 | 2016-03-02 | 株洲中达特科电子科技有限公司 | Thyristor-type bias magnet suppression and energy feedback device applied to full-controllable converter |
| CN105375769A (en) * | 2014-09-01 | 2016-03-02 | 株洲中达特科电子科技有限公司 | Single-phase full-bridge bias magnet suppression and energy feedback device applied to full-controllable converter |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6617913B1 (en) * | 2001-08-27 | 2003-09-09 | Unisys Corporation | Self-latching H-bridge system and apparatus |
| CN102522766A (en) * | 2011-11-04 | 2012-06-27 | 浙江大学 | Flyback type miniature photovoltaic grid connected inverter with power decoupling circuit and control method thereof |
-
2012
- 2012-08-10 CN CN201210284469.3A patent/CN103580525A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6617913B1 (en) * | 2001-08-27 | 2003-09-09 | Unisys Corporation | Self-latching H-bridge system and apparatus |
| CN102522766A (en) * | 2011-11-04 | 2012-06-27 | 浙江大学 | Flyback type miniature photovoltaic grid connected inverter with power decoupling circuit and control method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 古俊银等: "软开关交错反激光伏并网逆变器", 《中国电机工程学报》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105375770A (en) * | 2014-09-01 | 2016-03-02 | 株洲中达特科电子科技有限公司 | Diode-type bias magnet suppression and energy feedback device applied to full-controllable converter |
| CN105375766A (en) * | 2014-09-01 | 2016-03-02 | 株洲中达特科电子科技有限公司 | Thyristor-type bias magnet suppression and energy feedback device applied to full-controllable converter |
| CN105375769A (en) * | 2014-09-01 | 2016-03-02 | 株洲中达特科电子科技有限公司 | Single-phase full-bridge bias magnet suppression and energy feedback device applied to full-controllable converter |
| CN104796029A (en) * | 2015-01-27 | 2015-07-22 | 南通睿觅新能源科技有限公司 | Micro inverter applied to photovoltaic solar |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Mazumder et al. | Primary-side-converter-assisted soft-switching scheme for an AC/AC converter in a cycloconverter-type high-frequency-link inverter | |
| CN202444440U (en) | Bridgeless inverter circuit and solar bridgeless inverter | |
| CN102005957B (en) | Single-power supply cascade multi-level converter | |
| CN103904905A (en) | Isolated type three-port two-way DC/DC converter | |
| CN103532411A (en) | Micro inverter topology | |
| CN103023362A (en) | Bridgeless inverter circuit and solar bridgeless inverter | |
| CN202535290U (en) | Photovoltaic inverter circuit | |
| CN203423631U (en) | Solar energy no-bridge inverter comprising high boosted circuit | |
| CN102157955A (en) | Single-phase non-isolation type photovoltaic grid-connected inverter and control method | |
| CN103684214A (en) | Multi-mode wind-and-solar electricity generation system | |
| EP2541721A3 (en) | Grid-connected power conversion device | |
| CN103915856A (en) | Base station grid connected-charging photovoltaic micro-inverter system and control method thereof | |
| CN103326606A (en) | One-phase five-level inverter | |
| CN101667793B (en) | Grid-connected inverter | |
| CN104201927B (en) | Single-stage coupling inductance ZETA reactive power inverter | |
| CN202004681U (en) | Topological structure of photovoltaic grid-connected inverter | |
| CN105429177A (en) | Modularized photovoltaic energy storage system | |
| CN103580525A (en) | Minitype grid-connected inverter of active LC absorption network | |
| Dharmasena et al. | Bidirectional ac/dc converter topologies: A review | |
| CN103986185A (en) | Photovoltaic grid-connected inverter with active power decoupling function | |
| CN101527517A (en) | Twin-stage type matrix converter with direct-current excitation regulation and voltage frequency transformation | |
| CN103107723A (en) | Micro grid-connected inverter of passive soft buffer | |
| CN101552569B (en) | Synchronization inverter main circuit topology | |
| CN105553271A (en) | Control method of three-phase DC converter | |
| CN103269174B (en) | A kind of single-phase photovoltaic grid-connected inverter of low common-mode voltage |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140212 |