CN205509925U - Photovoltaic power generation system based on relay control circuit - Google Patents
Photovoltaic power generation system based on relay control circuit Download PDFInfo
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- CN205509925U CN205509925U CN201620337588.4U CN201620337588U CN205509925U CN 205509925 U CN205509925 U CN 205509925U CN 201620337588 U CN201620337588 U CN 201620337588U CN 205509925 U CN205509925 U CN 205509925U
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- Prior art keywords
- relay
- rly1
- type triode
- circuit
- schottky diode
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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
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Abstract
The utility model discloses a photovoltaic power generation system based on relay control circuit belongs to generation of electricity by new energy and smart power grids technical field, including photovoltaic array, boost circuit, relay control circuit, contravariant bridge and three -phase load, relay control circuit is a voltage of controlling the relay coil both ends through the DSP timer, control switch K1's closure, and including the RLY1 relay, darlington array pipe U1, schottky diode D1, D2, quick diode D3, triode Q1, Q2, RELAY relay, resistance R1, R2, R3, is the RLY1 relay by RLY1 DRV and RLY1 DRVPOWER constitutes. The utility model discloses fall to 6V with coil voltage by 12V, reduce the loss that the temperature rise brought, improve relay efficiency and life -span, avoid existing reverse impact voltage, arouse the electric current saltus step, produce a reversion's heavy current, played the effect of protection circuit.
Description
Technical field
This utility model relates to a kind of photovoltaic generating system, particularly relates to a kind of photovoltaic generating system based on control relay circuit, belongs to generation of electricity by new energy and intelligent power grid technology field.
Background technology
Photovoltaic generating system (PV System) is the electricity generation system utilizing solaode directly to convert solar energy into electric energy, and utilization is photovoltaic effect, including photovoltaic module and matching component (BOS).Photovoltaic generating system is divided into individual solar photovoltaic generating system, grid-connected solar photovoltaic generation system and distributed solar energy photovoltaic generating system.Its critical piece is solaode, accumulator, controller and inverter.Be characterized in reliability height, length in service life, free from environmental pollution, can Independent Power Generation can be incorporated into the power networks again, the favor organized by every industry or trade, there is vast potential for future development.Consulting statistics is ground: global photovoltaic generation in 2012 adds up installation and reaches 97GW according to intelligence, the newly-increased installation in whole world 30GW in 2012, the newly-increased installation of China accounts for more than the 16% of whole world total amount, and along with clean energy resource industry is vigorously supported by country, China's photovoltaic generating system industry will welcome development peak period.At present, use the photovoltaic generating system of control relay circuit, relay in fully loaded work time, temperature is the highest, is unfavorable for relay work, therefore relay efficiency and life-span are reduced, due to the existence of the self induction electromotive force of coil, an instantaneous reverse surge voltage can be caused, cause current-jump, producing a reverse big electric current, circuit can be played destruction by transient high-current.
Utility model content
Main purpose of the present utility model is to solve photovoltaic generating system above shortcomings in prior art, it is provided that a kind of photovoltaic generating system based on control relay circuit.
The purpose of this utility model can reach by adopting the following technical scheme that:
A kind of photovoltaic generating system based on control relay circuit, including photovoltaic array, booster circuit, control relay circuit, inverter bridge and threephase load, described photovoltaic array, described booster circuit, described control relay circuit, described inverter bridge, described threephase load are sequentially connected electrically；Described control relay circuit is the voltage being controlled relay coil two ends by DSP intervalometer, control the Guan Bi of switch K1, including RLY1 relay, darlington array pipe U1, Schottky diode D1, Schottky diode D2, fast diode D3, PNP type triode Q1, NPN type triode Q2, RELAY relay, resistance R1, resistance R2 and resistance R3；RLY1 relay electrically connects with darlington array pipe U1, darlington array pipe U1 electrically connects with fast diode D3, RELAY relay, fast diode D3 and RELAY relay is in parallel, PNP type triode Q1 and a power supply connect, resistance R1 electrically connects with resistance R2, resistance R2 electrically connects with NPN type triode Q2, PNP type triode Q1 electrically connects with RELAY relay, RLY1 relay is made up of RLY1-DRV and RLY1-DRVPOWER, RLY1-DRV and RLY1-DRVPOWER is all to be controlled by DSP intervalometer.
Further, described switch K1 is connected with described relay coil, described relay coil and power supply electrical connection.
Further, described relay coil is electrically connected with described power supply by Schottky diode D1, Schottky diode D2.
Further, when described RLY1-DRV is low level, becoming high level, described relay coil no power through darlington array pipe U1, switch K1 disconnects.
Further, when described RLY1-DRV is high level, becoming low level through darlington array pipe U1, RLY1-DRVPOWER is high level, the base voltage of PNP type triode Q1 is 12*R2/(R1+R2), NPN type triode Q2 turns on, and output voltage 12V, Schottky diode D1 and Schottky diode D2 reversely end, described relay coil is energized, switch K1 Guan Bi, described control relay circuit works, and described relay coil supply voltage is 12V；By using DSP intervalometer timing 1min, the level of RLY1-DRV keeps constant, RLY1-DRVPOWER is low level, PNP type triode Q1 and the cut-off of NPN type triode Q2,6V power supply is powered to described relay coil through Schottky diode D1 and Schottky diode D2, described relay coil supply voltage becomes 6V, switch K1 Guan Bi.
Advantageous Effects of the present utility model: a kind of based on control relay circuit the photovoltaic generating system of this utility model design, coil voltage is dropped to 6V by 12V, relay needs big voltage, large driven current density, and have only to small voltage, small area analysis after stable and K1 just can be kept to close, the loss that temperature rise brings can be reduced, avoid the relay the highest problem being unfavorable for relay work of the temperature when fully loaded work, reduce its running voltage and electric current can improve relay efficiency and life-span；When RLY1-DRV becomes low level again; stop relay coil being powered; the unilateral conduction of fast diode D3; carrying-off transient high-current; the existence avoiding the self induction electromotive force due to coil causes an instantaneous reverse surge voltage; cause current-jump, produce a reverse big electric current, serve the effect of protection circuit.
Accompanying drawing explanation
Fig. 1 is this utility model photovoltaic generating system schematic diagram；
Fig. 2 is this utility model control relay circuit figure.
In figure, ULQ2003AD be darlington array pipe U1, D3 be fast diode, D1, D2 are Schottky diode, and Q1 is PNP type triode, and Q2 is NPN type triode, and RELAY is relay, and R1, R2, R3 are resistance, K1 for switch.
Detailed description of the invention
For making those skilled in the art more clear and clear and definite the technical solution of the utility model, below in conjunction with embodiment and accompanying drawing, this utility model is described in further detail, but embodiment of the present utility model is not limited to this.
As depicted in figs. 1 and 2, a kind of photovoltaic generating system based on control relay circuit, including photovoltaic array, booster circuit, control relay circuit, inverter bridge and threephase load, described photovoltaic array, described booster circuit, described control relay circuit, described inverter bridge, described threephase load are sequentially connected electrically；Described control relay circuit is the voltage being controlled relay coil two ends by DSP intervalometer, control the Guan Bi of switch K1, including RLY1 relay, darlington array pipe U1, Schottky diode D1, Schottky diode D2, fast diode D3, PNP type triode Q1, NPN type triode Q2, RELAY relay, resistance R1, resistance R2 and resistance R3；RLY1 relay electrically connects with darlington array pipe U1, darlington array pipe U1 electrically connects with fast diode D3, RELAY relay, fast diode D3 and RELAY relay is in parallel, PNP type triode Q1 and a power supply connect, resistance R1 electrically connects with resistance R2, resistance R2 electrically connects with NPN type triode Q2, PNP type triode Q1 electrically connects with RELAY relay, RLY1 relay is made up of RLY1-DRV and RLY1-DRVPOWER, RLY1-DRV and RLY1-DRVPOWER is all to be controlled by DSP intervalometer.
In the present embodiment, owing to R1 can not make the emitter forward of Q1, therefore can not provide base current for Q1, Q1 can not be operated in amplification region；R2 can not provide base current for Q2, and therefore, Q2 can not be operated in amplification region.
Further, as in figure 2 it is shown, described switch K1 is connected with described relay coil, described relay coil and power supply electrical connection, described relay coil is electrically connected with described power supply by Schottky diode D1, Schottky diode D2.
Further, as in figure 2 it is shown, when described RLY1-DRV is low level, become high level, described relay coil no power through darlington array pipe U1, switch K1 disconnects.
Further, as in figure 2 it is shown, when described RLY1-DRV is high level, low level is become through darlington array pipe U1, RLY1-DRVPOWER is high level, and the base voltage of PNP type triode Q1 is 12*R2/(R1+R2), NPN type triode Q2 turns on, output voltage 12V, Schottky diode D1 and Schottky diode D2 reversely ends, and described relay coil is energized, switch K1 Guan Bi, described control relay circuit works, and described relay coil supply voltage is 12V；By using DSP intervalometer timing 1min, the level of RLY1-DRV keeps constant, RLY1-DRVPOWER is low level, PNP type triode Q1 and the cut-off of NPN type triode Q2,6V power supply is powered to described relay coil through Schottky diode D1 and Schottky diode D2, described relay coil supply voltage becomes 6V, switch K1 Guan Bi.
In sum, coil voltage is dropped to 6V by 12V, relay needs big voltage, large driven current density, and have only to small voltage, small area analysis after stable and K1 just can be kept to close, the loss that temperature rise brings can be reduced, avoid the relay the highest problem being unfavorable for relay work of the temperature when fully loaded work, reduce its running voltage and electric current can improve relay efficiency and life-span；When RLY1-DRV becomes low level again; stop relay coil being powered; the unilateral conduction of fast diode D3; carrying-off transient high-current; the existence avoiding the self induction electromotive force due to coil causes an instantaneous reverse surge voltage; cause current-jump, produce a reverse big electric current, serve the effect of protection circuit.
The above; it is only this utility model preferred embodiment; but protection domain of the present utility model is not limited thereto; any those familiar with the art is in scope disclosed in the utility model; according to the technical solution of the utility model and conceive equivalent or change in addition, broadly fall into protection domain of the present utility model.
Claims (5)
1. a photovoltaic generating system based on control relay circuit, including photovoltaic array, booster circuit, control relay circuit, inverter bridge and threephase load, it is characterised in that: described photovoltaic array, described booster circuit, described control relay circuit, described inverter bridge, described threephase load are sequentially connected electrically；Described control relay circuit is the voltage being controlled relay coil two ends by DSP intervalometer, control the Guan Bi of switch K1, including RLY1 relay, darlington array pipe U1, Schottky diode D1, Schottky diode D2, fast diode D3, PNP type triode Q1, NPN type triode Q2, RELAY relay, resistance R1, resistance R2 and resistance R3；RLY1 relay electrically connects with darlington array pipe U1, darlington array pipe U1 electrically connects with fast diode D3, RELAY relay, fast diode D3 and RELAY relay is in parallel, PNP type triode Q1 and a power supply connect, resistance R1 electrically connects with resistance R2, resistance R2 electrically connects with NPN type triode Q2, PNP type triode Q1 electrically connects with RELAY relay, RLY1 relay is made up of RLY1-DRV and RLY1-DRVPOWER, RLY1-DRV and RLY1-DRVPOWER is all to be controlled by DSP intervalometer.
A kind of photovoltaic generating system based on control relay circuit the most according to claim 1, it is characterised in that: described switch K1 is connected with described relay coil, described relay coil and power supply electrical connection.
A kind of photovoltaic generating system based on control relay circuit the most according to claim 2, it is characterised in that: described relay coil is electrically connected with described power supply by Schottky diode D1, Schottky diode D2.
A kind of photovoltaic generating system based on control relay circuit the most according to claim 1, it is characterised in that: when described RLY1-DRV is low level, becoming high level, described relay coil no power through darlington array pipe U1, switch K1 disconnects.
A kind of photovoltaic generating system based on control relay circuit the most according to claim 1, it is characterized in that: when described RLY1-DRV is high level, low level is become through darlington array pipe U1, RLY1-DRVPOWER is high level, the base voltage of PNP type triode Q1 is 12*R2/(R1+R2), NPN type triode Q2 turns on, output voltage 12V, Schottky diode D1 and Schottky diode D2 reversely ends, described relay coil is energized, switch K1 Guan Bi, described control relay circuit works, and described relay coil supply voltage is 12V；By using DSP intervalometer timing 1min, the level of RLY1-DRV keeps constant, RLY1-DRVPOWER is low level, PNP type triode Q1 and the cut-off of NPN type triode Q2,6V power supply is powered to described relay coil through Schottky diode D1 and Schottky diode D2, described relay coil supply voltage becomes 6V, switch K1 Guan Bi.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620337588.4U CN205509925U (en) | 2016-04-21 | 2016-04-21 | Photovoltaic power generation system based on relay control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620337588.4U CN205509925U (en) | 2016-04-21 | 2016-04-21 | Photovoltaic power generation system based on relay control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205509925U true CN205509925U (en) | 2016-08-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620337588.4U Expired - Fee Related CN205509925U (en) | 2016-04-21 | 2016-04-21 | Photovoltaic power generation system based on relay control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205509925U (en) |
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2016
- 2016-04-21 CN CN201620337588.4U patent/CN205509925U/en not_active Expired - Fee Related
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| 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: 20160824 |