CN204156541U - A kind of microcomputer controlled photovoltaic synchronization inverter system - Google Patents
A kind of microcomputer controlled photovoltaic synchronization inverter system Download PDFInfo
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- CN204156541U CN204156541U CN201420699596.4U CN201420699596U CN204156541U CN 204156541 U CN204156541 U CN 204156541U CN 201420699596 U CN201420699596 U CN 201420699596U CN 204156541 U CN204156541 U CN 204156541U
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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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Abstract
The utility model discloses a kind of microcomputer controlled photovoltaic synchronization inverter system, comprise solar panel, DC-DC converter, single-chip computer control system, DC-AC converter, DSP control system, protective circuit and electrical network; DC-DC converter connects solar panel, single-chip computer control system and DC-AC converter respectively, and DC-AC converter also connects DSP control system and protective circuit respectively, and protective circuit also connects electrical network.The topology of the DC/DC controller of the utility model system adopts push-pull type structure, simplify system configuration, reduce power consumption, main control chip is SG3525, this circuit effectively prevent magnetic bias, DC/AC inverter is full bridge inverter, is controlled by TMS320 type DSP, because the arithmetic speed of DSP is higher, therefore the output current of inverter can follow the tracks of grid voltage waveform well, keeps the stability of output voltage.
Description
Technical field
The utility model relates to a kind of inverter system, the microcomputer controlled photovoltaic synchronization inverter system of specifically simple, the stable performance of a kind of structure.
Background technology
In recent years, solar photovoltaic industry development is advanced by leaps and bounds, especially the technology of photovoltaic generation is utilized, at present, photovoltaic generation has been applied to various industrial production and daily life, and to generate electricity by way of merging two or more grid systems be a kind of generation mode in photovoltaic generation and important, inverter changes the direct current energy of solar cell into vitals that industrial-frequency alternating current transfers to electrical network, domestic common inverter many uses semibridge system or full-bridge type structure, complex structure, therefore present inverter has inefficiency, consume energy high, unstable properties and DC-DC transformation time easily there is magnetically saturated shortcoming.
Utility model content
The purpose of this utility model is to provide the novel solar energy wireless charger circuit that a kind of volume is little, structure is simple, stability is strong, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of microcomputer controlled photovoltaic synchronization inverter system, comprises solar panel, DC-DC converter, single-chip computer control system, DC-AC converter, DSP control system, protective circuit and electrical network; Described DC-DC converter connects solar panel, single-chip computer control system and DC-AC converter respectively, and described DC-AC converter also connects DSP control system and protective circuit respectively, and described protective circuit also connects electrical network.
As preferred version of the present utility model: described DC-DC converter comprises push-pull inverter, voltage processing circuitry, testing circuit and PWM drive circuit, push-pull inverter connects voltage processing circuitry and PWM drive circuit respectively, voltage processing circuitry is connection detection circuit also, testing circuit also connects single-chip computer control system, and monolithic control system also connects PWM drive circuit; Testing circuit comprises magnetic saturation detection, voltage detecting and current detecting, and voltage processing circuitry comprises high frequency transforming circuit, rectification circuit and filter circuit.
As preferred version of the present utility model: described DC-AC converter comprises inverter circuit, filter circuit, testing circuit, DSP control system and pulse driving circuit; inverter circuit connects filter circuit, testing circuit and pulse driving circuit respectively; filter circuit also connects protective circuit; testing circuit also connects protective circuit and DSP control system respectively; DSP control system also connects pulse driving circuit, and testing circuit comprises output electric current measure and synchronization signal detection.
As preferred version of the present utility model: the main control singlechip model of described single-chip computer control system is SG3525.
As preferred version of the present utility model: described DSP control system is TMS320F2812 type digital signal processor.
As preferred version of the present utility model: described signal acquisition circuit comprises voltage collection circuit and current collection circuit.
Compared with prior art, the beneficial effects of the utility model are: the topological structure of the DC/DC controller of system adopts push-pull circuit, simplify system configuration, reduce power consumption, main control chip is SG3525, this circuit have also been devised magnetic saturation testing circuit, effectively prevent magnetic bias, DC/AC inverter is full bridge inverter, controlled by TMS320 type DSP, because the arithmetic speed of DSP is higher, therefore the output current of inverter can follow the tracks of grid voltage waveform well, keeps the stability of output voltage.
Accompanying drawing explanation
Fig. 1 is a kind of theory diagram of microcomputer controlled photovoltaic synchronization inverter system;
Fig. 2 is the control block diagram of DC-DC converter;
Fig. 3 is the control block diagram of DC-AC converter.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1 ~ 3, in the utility model embodiment, a kind of microcomputer controlled photovoltaic synchronization inverter system, comprises solar panel, DC-DC converter, single-chip computer control system, DC-AC converter, DSP control system, protective circuit and electrical network; Described DC-DC converter connects solar panel, single-chip computer control system and DC-AC converter respectively, and described DC-AC converter also connects DSP control system and protective circuit respectively, and described protective circuit also connects electrical network.
As preferred version of the present utility model: described DC-DC converter comprises push-pull inverter, voltage processing circuitry, testing circuit and PWM drive circuit, push-pull inverter connects voltage processing circuitry and PWM drive circuit respectively, voltage processing circuitry is connection detection circuit also, testing circuit also connects single-chip computer control system, and monolithic control system also connects PWM drive circuit; Testing circuit comprises magnetic saturation detection, voltage detecting and current detecting, and voltage processing circuitry comprises high frequency transforming circuit, rectification circuit and filter circuit.
DC-AC converter comprises inverter circuit, filter circuit, testing circuit, DSP control system and pulse driving circuit; inverter circuit connects filter circuit, testing circuit and pulse driving circuit respectively; filter circuit also connects protective circuit; testing circuit also connects protective circuit and DSP control system respectively; DSP control system also connects pulse driving circuit, and testing circuit comprises output electric current measure and synchronization signal detection.
The main control singlechip model of single-chip computer control system is SG3525, and DSP control system is TMS320F2812 type digital signal processor, and signal acquisition circuit comprises voltage collection circuit and current collection circuit.
Operation principle of the present utility model is: solar panel by transform light energy be delivery of electrical energy to DC-DC converter, the duty ratio of the push-pull inverter control single chip computer SG3525 output drive signal in DC-DC converter.This control circuit also has the defencive function of restriction output overcurrent overvoltage, and when detecting that DC/DC converter output current is excessive, single-chip microcomputer SG3525 will reduce the width of gate pulse, reduces output voltage, and then reduces output current.When the output voltage is too high, the work of DC/DC transformer can be stopped.Because push-pull circuit is easily because D.C. magnetic biasing causes transformer saturated, therefore have also been devised magnetic saturation testing circuit in circuit, when two branch currents flowing through push-pull circuit are unbalance, the soft start function of SG3525 will be started, DC/DC converter is restarted, transformer is resetted, when combining inverter is connected with solar cell, combining inverter can be equivalent to the load resistance of solar cell, when the voltage of solar cell raises, signal acquisition circuit by Signal transmissions to DSP control system, magnitude of voltage compares by DSP control system, export PWM modulation signal, the power output of solar cell can be increased, otherwise just reduce its power output.
Claims (5)
1. a microcomputer controlled photovoltaic synchronization inverter system, comprises solar panel, DC-DC converter, single-chip computer control system, DC-AC converter, DSP control system, protective circuit and electrical network; It is characterized in that, described DC-DC converter connects solar panel, single-chip computer control system and DC-AC converter respectively, and described DC-AC converter also connects DSP control system and protective circuit respectively, and described protective circuit also connects electrical network.
2. a kind of microcomputer controlled photovoltaic synchronization inverter system according to claim 1, it is characterized in that, described DC-DC converter comprises push-pull inverter, voltage processing circuitry, testing circuit and PWM drive circuit, push-pull inverter connects voltage processing circuitry and PWM drive circuit respectively, voltage processing circuitry is connection detection circuit also, testing circuit also connects single-chip computer control system, and monolithic control system also connects PWM drive circuit; Testing circuit comprises magnetic saturation detection, voltage detecting and current detecting, and voltage processing circuitry comprises high frequency transforming circuit, rectification circuit and filter circuit.
3. a kind of microcomputer controlled photovoltaic synchronization inverter system according to claim 1; it is characterized in that; described DC-AC converter comprises inverter circuit, filter circuit, testing circuit, DSP control system and pulse driving circuit; inverter circuit connects filter circuit, testing circuit and pulse driving circuit respectively; filter circuit also connects protective circuit; testing circuit also connects protective circuit and DSP control system respectively; DSP control system also connects pulse driving circuit, and testing circuit comprises output electric current measure and synchronization signal detection.
4. a kind of microcomputer controlled photovoltaic synchronization inverter system according to claim 1, is characterized in that, the main control singlechip model of described single-chip computer control system is SG3525.
5. a kind of microcomputer controlled photovoltaic synchronization inverter system according to claim 1, is characterized in that, described DSP control system is TMS320F2812 type digital signal processor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420699596.4U CN204156541U (en) | 2014-11-20 | 2014-11-20 | A kind of microcomputer controlled photovoltaic synchronization inverter system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420699596.4U CN204156541U (en) | 2014-11-20 | 2014-11-20 | A kind of microcomputer controlled photovoltaic synchronization inverter system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204156541U true CN204156541U (en) | 2015-02-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420699596.4U Expired - Fee Related CN204156541U (en) | 2014-11-20 | 2014-11-20 | A kind of microcomputer controlled photovoltaic synchronization inverter system |
Country Status (1)
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| CN (1) | CN204156541U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105137792A (en) * | 2015-08-31 | 2015-12-09 | 成都科创城科技有限公司 | Hybrid energy power supply video collection device for smart home system |
| CN110557041A (en) * | 2019-10-11 | 2019-12-10 | 徐州核润光能有限公司 | Photovoltaic inverter control method |
-
2014
- 2014-11-20 CN CN201420699596.4U patent/CN204156541U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105137792A (en) * | 2015-08-31 | 2015-12-09 | 成都科创城科技有限公司 | Hybrid energy power supply video collection device for smart home system |
| CN110557041A (en) * | 2019-10-11 | 2019-12-10 | 徐州核润光能有限公司 | Photovoltaic inverter control method |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150211 Termination date: 20161120 |