CN203301357U - Inverter load impedance match circuit structure - Google Patents
Inverter load impedance match circuit structure Download PDFInfo
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- CN203301357U CN203301357U CN2013203746058U CN201320374605U CN203301357U CN 203301357 U CN203301357 U CN 203301357U CN 2013203746058 U CN2013203746058 U CN 2013203746058U CN 201320374605 U CN201320374605 U CN 201320374605U CN 203301357 U CN203301357 U CN 203301357U
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- inverter
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- relay
- relay switch
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Abstract
The utility model relates to an inverter load impedance match circuit structure. Impedance diodes are in series with an output terminal of an inverter, each pair of the impedance diodes are in parallel with each other in a reverse direction. The inverter load impedance match circuit structure is characterized in that a pair of impedance diodes which are in parallel in a reverse direction is in parallel with a relay switch, a relay solenoid controlling the relay switch obtains power under control of an inverter load identification controller, to enable the inverter to switch on the relay switch when the load of the relay is less than half load and switch of the relay switch when the load of the relay is not less than half load. When the inverter is no-load, the needed AC impedance is comparatively big, two pairs of impedance diodes are connected in in series, and when the load is not less than half load and the needed AC impedance is comparatively small, the relay is switch on, only one pair of impedance diodes is connected in in series. And inverter module efficiency is raised, and the requirement for parallel operation of the inverter module in various states is satisfied.
Description
Technical field
The utility model relates to inverter circuit, is a kind of inverter load impedance match circuit structure specifically.
Background technology
Because the inverter output voltage waveform has small inconsistently, while making the module parallel operation, exist and instead fill with voltage, thereby make the module can't parallel operation or not current-sharing of parallel operation.In order to address this problem, prior art is the impedance diode at 2 pairs of reverse parallel connections of output series connection of inverter, but the power consumption that produces on diode under large electric current can affect module efficiency.Impedance to the reverse parallel connection diode of series connection 2 forms the AC impedance of 1.4V, in order to reduce output voltage waveforms because of the small inconsistent anti-filling voltage that causes, but the impedance meeting that increases reduces efficiency, the AC impedance that needs when the zero load because of module is larger, less in semi-load and the AC impedance that needs when above, so there is this defect in prior art.
Summary of the invention
Technical problem to be solved in the utility model is to address the aforementioned drawbacks, a kind of inverter load impedance match circuit structure is provided, make inverter all the AC impedance that adapts can be arranged, the anti-filling current problems while solving simultaneously the module parallel operation when unloaded and semi-load.
Described inverter load impedance match circuit structure, two pairs of impedance diodes of output series connection at inverter, the mutual reverse parallel connection of every a pair of impedance diode connects, it is characterized in that: wherein the impedance diodes in parallel of a pair of reverse parallel connection connection connects a relay switch, controlling the relay line bag of this relay switch controls electricly by inverter load identification controller, make described inverter attracting electric relay switch when loading less than semi-load, relay switch when semi-load and above load.
Inverter needs when zero load AC impedance is larger, seal in 2 pairs of impedance diodes, the AC impedance that needs when semi-load and above load hour, attracting electric relay, only seal in 1 pair of impedance diode, improve inverter module efficiency, can meet the requirement of inverter module energy parallel operation under various states simultaneously.
The accompanying drawing explanation
Fig. 1 is the utility model electrical block diagram.
In figure: 1-impedance diode, 2-relay switch, 3-relay line bag, 4-inverter load identification controller, 5-current transformer.
Embodiment
below in conjunction with drawings and Examples, the utility model is further illustrated: as shown in fig. 1, described inverter load impedance match circuit structure, two pairs of impedance diodes 1 of output series connection at inverter, the mutual reverse parallel connection of every a pair of impedance diode connects, the impedance diode 1 that connects of a pair of reverse parallel connection relay switch 2 that is connected in parallel wherein, controlling the relay line bag 3 of this relay switch 2 controls electricly by inverter load identification controller 4, make described inverter attracting electric relay switch 2 when loading less than semi-load, when semi-load and above load, relay switch 2.
Can be by current transformer 5 samplings on outlet line, after current sampling signal is differentiated, by inverter, load identification controller 4 control relay line bags 3 must electric or dead electricity, thereby control the attracting state of described relay switch 2, regulate described inverter attracting electric relay switch 2 when loading less than semi-load, when semi-load and above load, relay switch 2.
Inverter needs when zero load AC impedance is larger, seal in 2 pairs of impedance diodes, the AC impedance that needs when semi-load and above load hour, attracting electric relay, only seal in 1 pair of impedance diode, improve inverter module efficiency, can meet the requirement of inverter module energy parallel operation under various states simultaneously.
Claims (1)
1. inverter load impedance match circuit structure, output series connection two pairs of impedance diodes (1) at inverter, the mutual reverse parallel connection of every a pair of impedance diode connects, it is characterized in that: the impedance diode (1) that connects of a pair of reverse parallel connection relay switch (2) that is connected in parallel wherein, controlling the relay line bag (3) of this relay switch (2) controls electricly by inverter load identification controller (4), make described inverter attracting electric relay switch (2) when loading less than semi-load, relay switch when semi-load and above load (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203746058U CN203301357U (en) | 2013-06-27 | 2013-06-27 | Inverter load impedance match circuit structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203746058U CN203301357U (en) | 2013-06-27 | 2013-06-27 | Inverter load impedance match circuit structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203301357U true CN203301357U (en) | 2013-11-20 |
Family
ID=49577339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203746058U Expired - Fee Related CN203301357U (en) | 2013-06-27 | 2013-06-27 | Inverter load impedance match circuit structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203301357U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105635904A (en) * | 2014-11-24 | 2016-06-01 | 天地融科技股份有限公司 | Universal audio adaption apparatus and electronic devices |
-
2013
- 2013-06-27 CN CN2013203746058U patent/CN203301357U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105635904A (en) * | 2014-11-24 | 2016-06-01 | 天地融科技股份有限公司 | Universal audio adaption apparatus and electronic devices |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131120 Termination date: 20150627 |
|
| EXPY | Termination of patent right or utility model |