CN204179943U - A kind of photovoltaic generating system bidirectional DC-DC converter based on DSP - Google Patents
A kind of photovoltaic generating system bidirectional DC-DC converter based on DSP Download PDFInfo
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- CN204179943U CN204179943U CN201420699623.8U CN201420699623U CN204179943U CN 204179943 U CN204179943 U CN 204179943U CN 201420699623 U CN201420699623 U CN 201420699623U CN 204179943 U CN204179943 U CN 204179943U
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- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 17
- 230000001681 protective effect Effects 0.000 claims abstract description 11
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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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 photovoltaic generating system bidirectional DC-DC converter based on DSP, comprise power supply, signal acquisition circuit, DSP control system, protective circuit, bi-directional DC-DC main circuit and other circuit; It is characterized in that, described DSP control circuit connects power supply, signal acquisition circuit, protective circuit, bi-directional DC-DC main circuit and other circuit respectively, described bi-directional DC-DC main circuit also connection signal Acquisition Circuit.The utility model system adopts the bidirectional DC-DC converter topological structure of non-isolated to be inverter main circuit, simplify circuit structure, and the size of solar cell terminal voltage can be identified, automatically switch charge and discharge pattern rapidly, use dsp system as signal processing unit, add the conversion speed of system, whole system is had low in energy consumption, superior performance, integrated level is high, greatly, signal changes more accurately advantage fast for data and program memory space.
Description
Technical field
The utility model relates to a kind of DC-DC converter, and specifically simple, the stable performance of a kind of structure, uses DSP as the photovoltaic generating system bidirectional DC-DC converter of main control unit.
Background technology
Solar energy power generating is the main trend that future source of energy utilizes, now be used widely gradually, bidirectional DC-DC converter is as power conversion unit important in photovoltaic generating system, more and more cause the concern of domestic and international researcher, bi-directional power conversion is a complicated MIMO nonlinear systems, and it is many that traditional bidirectional DC-DC converter exists number of switches, controls complicated, the relatively low inferior shortcoming of efficiency, can not meet present application demand.
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:
Based on a photovoltaic generating system bidirectional DC-DC converter of DSP, comprise power supply, signal acquisition circuit, DSP control system, protective circuit, bi-directional DC-DC main circuit and other circuit; Described DSP control circuit connects power supply, signal acquisition circuit, protective circuit, bi-directional DC-DC main circuit and other circuit respectively, described bi-directional DC-DC main circuit also connection signal Acquisition Circuit.
As preferred version of the present utility model: described bi-directional DC-DC main circuit comprises power switch pipe VT1, power switch pipe VT2, electric capacity C2, diode T1, one end of diode T2 and diode T3, electric capacity C1 connects inductance L 1 and batteries, and the other end of electric capacity C1 connects the positive pole of diode T4, the emitter of power switch pipe VT1, electric capacity C2, electric capacity C4, electric capacity C5, the other end of batteries and solar panels, the negative pole of diode T4 connects inductance L 5, the positive pole of diode T7 and the other end of electric capacity C5, the other end of inductance L 1 connects the positive pole of diode T1, the positive pole of diode T2, the positive pole of diode T5, inductance L 4, the collector electrode of power switch pipe VT1 and the emitter of power switch pipe VT2, the base stage of power switch pipe VT1 connects DSP control system, and the negative pole of diode T1 connects inductance L 2, and the other end of inductance L 2 connects inductance L 3, the other end of electric capacity C4, the collector electrode of power switch pipe VT2 and the other end of solar panels, the negative pole of diode T2 connects the positive pole of diode T3 and the other end of electric capacity C2, the other end of diode T3 connects the other end of inductance L 3, the base stage of power switch pipe VT2 connects DSP control system, the other end of inductance L 4 connects negative pole, the negative pole of the cathode connecting diode T7 of diode T6 and the other end of electric capacity C3 of diode T6.
As preferred version of the present utility model: described protective circuit comprises software protection and hardware protection two parts
As preferred version of the present utility model: other circuit described comprise telecommunication circuit, clock chip circuit, button and display circuit.
As preferred version of the present utility model: described DSP control system is TMS320F28335 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: system adopts the bidirectional DC-DC converter topological structure of non-isolated to be inverter main circuit, simplify circuit structure, and the size of solar cell terminal voltage can be identified, automatically charge and discharge pattern is switched rapidly, use dsp system as signal processing unit, add the conversion speed of system, whole system is had low in energy consumption, superior performance, integrated level is high, and greatly, signal changes more accurately advantage fast for data and program memory space.
Accompanying drawing explanation
Fig. 1 is a kind of theory diagram of the photovoltaic generating system bidirectional DC-DC converter based on DSP.
Fig. 2 is the circuit diagram of bi-directional DC-DC main circuit.
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 ~ 2, in the utility model embodiment, a kind of photovoltaic generating system bidirectional DC-DC converter based on DSP, comprises power supply, signal acquisition circuit, DSP control system, protective circuit, bi-directional DC-DC main circuit and other circuit; Described DSP control circuit connects power supply, signal acquisition circuit, protective circuit, bi-directional DC-DC main circuit and other circuit respectively, and bi-directional DC-DC main circuit is connection signal Acquisition Circuit also.
Bi-directional DC-DC main circuit comprises power switch pipe VT1, power switch pipe VT2, electric capacity C2, diode T1, one end of diode T2 and diode T3, electric capacity C1 connects inductance L 1 and batteries, and the other end of electric capacity C1 connects the positive pole of diode T4, the emitter of power switch pipe VT1, electric capacity C2, electric capacity C4, electric capacity C5, the other end of batteries and solar panels, the negative pole of diode T4 connects inductance L 5, the positive pole of diode T7 and the other end of electric capacity C5, the other end of inductance L 1 connects the positive pole of diode T1, the positive pole of diode T2, the positive pole of diode T5, inductance L 4, the collector electrode of power switch pipe VT1 and the emitter of power switch pipe VT2, the base stage of power switch pipe VT1 connects DSP control system, and the negative pole of diode T1 connects inductance L 2, and the other end of inductance L 2 connects inductance L 3, the other end of electric capacity C4, the collector electrode of power switch pipe VT2 and the other end of solar panels, the negative pole of diode T2 connects the positive pole of diode T3 and the other end of electric capacity C2, the other end of diode T3 connects the other end of inductance L 3, the base stage of power switch pipe VT2 connects DSP control system, the other end of inductance L 4 connects negative pole, the negative pole of the cathode connecting diode T7 of diode T6 and the other end of electric capacity C3 of diode T6.
Protective circuit comprises software protection and hardware protection two parts; other circuit comprise telecommunication circuit, clock chip circuit, button and display circuit; DSP control system is TMS320F28335 type digital signal processor, and signal acquisition circuit comprises voltage collection circuit and current collection circuit.
Operation principle of the present utility model is: voltage, current collection circuit gathers voltage from main circuit, current signal, delivered in the inner integrated transducer of TMS320F28335 type digital signal processor again, the base stage of power switch pipe VT1 and VT2 in bi-directional DC-DC main circuit is outputted to after power amplification, when power switch pipe VT1 conducting, electric current is through inductance L 1 and power switch pipe VT1, internal inductance L stored energy at this moment, load end provides energy by electric capacity C4, when power switch pipe VT1 ends, batteries and inductance L 1 release energy, there is provided charging current to filter capacitor C4 and provide output current to load, the reverse current of inductance L 2 twin zener dioder T1, the cut-off realizing power switch pipe VT1 transfers to opens with diode T1 by the reliable change of current being conducting to cut-off generation, by diode T2, diode T3, electric capacity C2 and inductance L 3 suppress power switch pipe VT1 to turn off peak voltage, achieve power switch pipe VT1 open turn cut-off and diode T1 by cut-off transfer to turn on process generation the reliable change of current, the electric energy stored in electric capacity C2 discharges into load by diode T3 and inductance L 3, achieve the soft commutation of circuit, therefore the constant voltage of the control realization of DSP to storage battery is passed through, constant current reliably controls, make output voltage electric current Static and dynamic performance good.
Claims (6)
1., based on a photovoltaic generating system bidirectional DC-DC converter of DSP, comprise power supply, signal acquisition circuit, DSP control system, protective circuit, bi-directional DC-DC main circuit and other circuit; It is characterized in that, described DSP control circuit connects power supply, signal acquisition circuit, protective circuit, bi-directional DC-DC main circuit and other circuit respectively, described bi-directional DC-DC main circuit also connection signal Acquisition Circuit.
2. a kind of photovoltaic generating system bidirectional DC-DC converter based on DSP according to claim 1, it is characterized in that, described bi-directional DC-DC main circuit comprises power switch pipe VT1, power switch pipe VT2, electric capacity C2, diode T1, one end of diode T2 and diode T3, electric capacity C1 connects inductance L 1 and batteries, and the other end of electric capacity C1 connects the positive pole of diode T4, the emitter of power switch pipe VT1, electric capacity C2, electric capacity C4, electric capacity C5, the other end of batteries and solar panels, the negative pole of diode T4 connects inductance L 5, the positive pole of diode T7 and the other end of electric capacity C5, the other end of inductance L 1 connects the positive pole of diode T1, the positive pole of diode T2, the positive pole of diode T5, inductance L 4, the collector electrode of power switch pipe VT1 and the emitter of power switch pipe VT2, the base stage of power switch pipe VT1 connects DSP control system, and the negative pole of diode T1 connects inductance L 2, and the other end of inductance L 2 connects inductance L 3, the other end of electric capacity C4, the collector electrode of power switch pipe VT2 and the other end of solar panels, the negative pole of diode T2 connects the positive pole of diode T3 and the other end of electric capacity C2, the other end of diode T3 connects the other end of inductance L 3, the base stage of power switch pipe VT2 connects DSP control system, the other end of inductance L 4 connects negative pole, the negative pole of the cathode connecting diode T7 of diode T6 and the other end of electric capacity C3 of diode T6.
3. a kind of photovoltaic generating system bidirectional DC-DC converter based on DSP according to claim 1, is characterized in that, described protective circuit comprises software protection and hardware protection two parts.
4. a kind of photovoltaic generating system bidirectional DC-DC converter based on DSP according to claim 1, it is characterized in that, other circuit described comprise telecommunication circuit, clock chip circuit, button and display circuit.
5. a kind of photovoltaic generating system bidirectional DC-DC converter based on DSP according to claim 1, is characterized in that, described DSP control system is TMS320F28335 type digital signal processor.
6. a kind of photovoltaic generating system bidirectional DC-DC converter based on DSP according to claim 1, it is characterized in that, described signal acquisition circuit comprises voltage collection circuit and current collection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420699623.8U CN204179943U (en) | 2014-11-20 | 2014-11-20 | A kind of photovoltaic generating system bidirectional DC-DC converter based on DSP |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420699623.8U CN204179943U (en) | 2014-11-20 | 2014-11-20 | A kind of photovoltaic generating system bidirectional DC-DC converter based on DSP |
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| CN204179943U true CN204179943U (en) | 2015-02-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420699623.8U Expired - Fee Related CN204179943U (en) | 2014-11-20 | 2014-11-20 | A kind of photovoltaic generating system bidirectional DC-DC converter based on DSP |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107331337A (en) * | 2017-07-31 | 2017-11-07 | 京东方科技集团股份有限公司 | Array base palte and its test device, method and display device |
| CN113525106A (en) * | 2020-04-13 | 2021-10-22 | 广州汽车集团股份有限公司 | DC/DC converter and control method thereof |
-
2014
- 2014-11-20 CN CN201420699623.8U patent/CN204179943U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107331337A (en) * | 2017-07-31 | 2017-11-07 | 京东方科技集团股份有限公司 | Array base palte and its test device, method and display device |
| CN113525106A (en) * | 2020-04-13 | 2021-10-22 | 广州汽车集团股份有限公司 | DC/DC converter and control method thereof |
| CN113525106B (en) * | 2020-04-13 | 2023-11-17 | 广州汽车集团股份有限公司 | DC/DC converter and control method thereof |
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| 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: 20150225 Termination date: 20161120 |
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| CF01 | Termination of patent right due to non-payment of annual fee |