CN206977310U - A kind of auxiliary power supply of photovoltaic inverter start-up circuit - Google Patents
A kind of auxiliary power supply of photovoltaic inverter start-up circuit Download PDFInfo
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- CN206977310U CN206977310U CN201720501832.0U CN201720501832U CN206977310U CN 206977310 U CN206977310 U CN 206977310U CN 201720501832 U CN201720501832 U CN 201720501832U CN 206977310 U CN206977310 U CN 206977310U
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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
A kind of auxiliary power supply of photovoltaic inverter start-up circuit, including resistance R1, resistance R2, resistance R3, resistance R4, electric capacity C1, triode Q1, triode Q2, counnter attack diode D1, counnter attack diode D2, voltage-stabiliser tube ZD1, the emitter stage of the triode Q2 is connected with bus BUS, the base stage of the triode Q2 is connected by resistance R2 with bus BUS+, the colelctor electrode of the triode Q1 is connected with triode Q2 base stage, the emitter stage of the triode Q1 is connected with bus BUS, the base stage of the triode Q1 passes through voltage-stabiliser tube ZD1, resistance R1 is connected with bus BUS+, the base stage of the triode Q1 is also connected by resistance R3 with bus BUS.The utility model incorporates voltage decision circuit and start-up circuit in primary circuit, reduces the resistance quantity in circuit for current limliting and loss, when avoiding the low pressure input from starting Switching Power Supply constantly hiccup restart or under-voltage operation.
Description
Technical field
Auxiliary power start circuit field is the utility model is related to, espespecially a kind of auxiliary power supply of photovoltaic inverter starts electricity
Road.
Background technology
Photovoltaic generation is one kind of solar energy generation technology, is the electric energy according to caused by photovoltaic effect principle, is utilized
Solar energy is converted into electric energy by solar cell.Whether independent to use or generate electricity by way of merging two or more grid systems, photovoltaic generating system is main
It is made up of solar panel (component), controller and inverter three parts, they are mainly made up of electronic component, are not related to
Mechanical part, so photovoltaic power generation equipment extremely refines, reliable and stable long lifespan, installation easy maintenance.
Existing auxiliary power supply of photovoltaic inverter start-up circuit, mainly for using the HF switch electricity for starting resistance starting
Source, feature are controllable by start-up circuit complete machine auxiliary power start voltage range, but startup minimum voltage can be by temperature
Either other specification inconsistent the problem of causing different running temperatures or different machines to start voltage difference on circuit is spent, and
When low pressure is inputted and started, Switching Power Supply, which can constantly have the hiccups, restarts or under-voltage operation.
The content of the invention
To solve the above problems, the utility model provides a kind of auxiliary power supply of photovoltaic inverter start-up circuit, merge former electricity
Voltage decision circuit and start-up circuit in road, reduce start-up circuit cost, and reduce the resistance for being used for current limliting in circuit
Quantity and loss, and by this start-up circuit Switching Power Supply smoothly across the electrical voltage point of minimum startup, and provide startup
The hysteresis window of voltage and shutdown voltage, when avoiding the low pressure input from starting Switching Power Supply constantly hiccup restart or under-voltage operation.
To achieve the above object, the technical solution adopted in the utility model is：A kind of auxiliary power supply of photovoltaic inverter starts
Circuit, including it is resistance R1, resistance R2, resistance R3, resistance R4, electric capacity C1, triode Q1, triode Q2, counnter attack diode D1, anti-
Anti- diode D2, voltage-stabiliser tube ZD1, the triode Q2 colelctor electrode pass through the enabled of the external Master control chips of counnter attack diode D1
SPS_EN is held, the colelctor electrode of the triode Q2 takes over control anti-diode D2 positive pole, the counnter attack diode D2 by resistance R4
Negative pole meet power supply SPS_VCC, the emitter stage of the triode Q2 is connected with bus BUS-, and the base stage of the triode Q2 passes through
Resistance R2 is connected with bus BUS+, and the colelctor electrode of the triode Q1 is connected with triode Q2 base stage, the triode Q1's
Emitter stage is connected with bus BUS-, and the base stage of the triode Q1 is connected by voltage-stabiliser tube ZD1, resistance R1 with bus BUS+, institute
The base stage for stating triode Q1 is also connected by resistance R3 with bus BUS-, and the positive pole of the electric capacity C1 is connected with power supply SPS_VCC,
Negative pole is connected with bus BUS-.
Specifically, the counnter attack diode D1 negative poles are connected with triode Q2 colelctor electrodes, and positive pole and Master control chip make
Can end SPS_EN connections, the voltage-stabiliser tube ZD1 positive poles are connected with triode Q1 base stages, negative pole respectively with resistance R1, the pole of counnter attack two
Pipe D2 positive poles connect.
Specifically, the triode Q1, triode Q2 are NPN type triode.
The beneficial effects of the utility model are：The utility model mainly includes resistance R1, resistance R2, resistance R3, resistance
R4, electric capacity C1, triode Q1, triode Q2, counnter attack diode D1, counnter attack diode D2 and voltage-stabiliser tube ZD1, incorporate primary circuit
In voltage decision circuit and start-up circuit, reduce the resistance quantity in circuit for current limliting and loss, while reduce and open
The cost of dynamic circuit, the input direct voltage and minimum voltage of Switching Power Supply start-up operation are judged by the circuit of low cost.This
Outside, this start-up circuit make it that Switching Power Supply smoothly crosses over the electrical voltage point of minimum startup, and provides and start voltage and shutdown voltage
Hysteresis window, when avoiding the low pressure input from starting Switching Power Supply constantly hiccup restart or under-voltage operation.
Brief description of the drawings
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
Refer to shown in Fig. 1, the utility model is on a kind of auxiliary power supply of photovoltaic inverter start-up circuit, including resistance
It is R1, resistance R2, resistance R3, resistance R4, electric capacity C1, triode Q1, triode Q2, counnter attack diode D1, counnter attack diode D2, steady
Pressure pipe ZD1, the triode Q2 colelctor electrode are described by the Enable Pin SPS_EN of the external Master control chips of counnter attack diode D1
Triode Q2 colelctor electrode takes over control anti-diode D2 positive pole by resistance R4, and the negative pole of the counnter attack diode D2 connects power supply
SPS_VCC, the emitter stage of the triode Q2 are connected with bus BUS-, and the base stage of the triode Q2 passes through resistance R2 and bus
BUS+ connections, the colelctor electrode of the triode Q1 are connected with triode Q2 base stage, the emitter stage and bus of the triode Q1
BUS- connections, the base stage of the triode Q1 are connected by voltage-stabiliser tube ZD1, resistance R1 with bus BUS+, the triode Q1's
Base stage is also connected by resistance R3 with bus BUS-, and the positive pole of the electric capacity C1 is connected with power supply SPS_VCC, negative pole and bus
BUS- connections.
Specifically, the counnter attack diode D1 negative poles are connected with triode Q2 colelctor electrodes, and positive pole and Master control chip make
Can end SPS_EN connections, the voltage-stabiliser tube ZD1 positive poles are connected with triode Q1 base stages, negative pole respectively with resistance R1, the pole of counnter attack two
Pipe D2 positive poles connect.
Specifically, the triode Q1, triode Q2 are NPN type triode.
In this specific embodiment, resistance R1 serves Switching Power Supply and starts shared buffer resistance and triode Q1 drive
The effect of dynamic current-limiting resistance；Resistance Q2 serves the effect of triode Q2 driving limiting resistance；Resistance R3 is served for opening
The startup in powered-down source, the judgement regulation for closing voltage；Resistance R4 is used for stagnant between Switching Power Supply startup voltage and closing voltage
Return the regulation of voltage window；Working power Support Capacitors of the C1 as Switching Power Supply Master control chip；Power supply SPS_VCC is switch
Main power control chip, which provides, starts required voltage and electric current, and the Enable Pin SPS_EN of Master control chip enables for PWM
Or dutycycle output is enabled.Wherein, the rated voltage of the voltage-stabiliser tube ZD1 in this specific embodiment is 18V, no more than switch electricity
The maximum operating voltage of source Master control chip.
For this specific embodiment mainly for using the high frequency switch power for starting resistance starting, feature is to pass through start-up circuit
So that complete machine auxiliary power start voltage range is controllable, starting minimum voltage will not be by other specification in temperature or circuit not
Unanimously cause different operating ambient temperatures or different machines to open the problem of electromechanical pressure is different, electricity is started by this specific embodiment
Road make it that Switching Power Supply smoothly crosses over the electrical voltage point of minimum startup, and provides the hysteresis window for starting voltage and shutdown voltage,
Switching Power Supply constantly hiccup is restarted or under-voltage operation when avoiding the low pressure input from starting.And start the judgement of voltage by merging
The start-up circuit of circuit and accessory power supply Master control chip, reduce the quantity of resistance used in start-up circuit, improve switch electricity
The area for the PCB that source takes, the power density of Switching Power Supply being improved, starting ohmically damage during by reducing normal work
Consumption, so as to improve the efficiency of Switching Power Supply.
Embodiment of above is only that preferred embodiment of the present utility model is described, not to the utility model
Scope be defined, on the premise of the utility model design spirit is not departed from, this area ordinary skill technical staff to this
The various modifications and improvement that the technical scheme of utility model is made, the guarantor that claims of the present utility model determine all should be fallen into
In the range of shield.
Claims (3)
- A kind of 1. auxiliary power supply of photovoltaic inverter start-up circuit, it is characterised in that：Including resistance R1, resistance R2, resistance R3, resistance R4, electric capacity C1, triode Q1, triode Q2, counnter attack diode D1, counnter attack diode D2, voltage-stabiliser tube ZD1, the triode Q2 Colelctor electrode passed through by the Enable Pin SPS_EN of the external Master control chips of counnter attack diode D1, the colelctor electrode of the triode Q2 Resistance R4 takes over control anti-diode D2 positive pole, and the negative pole of the counnter attack diode D2 meets power supply SPS_VCC, the triode Q2's Emitter stage is connected with bus BUS-, and the base stage of the triode Q2 is connected by resistance R2 with bus BUS+, the triode Q1 Colelctor electrode be connected with triode Q2 base stage, the emitter stage of the triode Q1 is connected with bus BUS-, the triode Q1 Base stage be connected by voltage-stabiliser tube ZD1, resistance R1 with bus BUS+, the base stage of the triode Q1 also passes through resistance R3 and bus BUS- connections, the positive pole of the electric capacity C1 are connected with power supply SPS_VCC, and negative pole is connected with bus BUS-.
- A kind of 2. auxiliary power supply of photovoltaic inverter start-up circuit according to claim 1, it is characterised in that：The counnter attack two Pole pipe D1 negative poles are connected with triode Q2 colelctor electrodes, the Enable Pin SPS_EN connections of positive pole and Master control chip, the voltage-stabiliser tube ZD1 positive poles are connected with triode Q1 base stages, and negative pole is connected with resistance R1, counnter attack diode D2 positive poles respectively.
- A kind of 3. auxiliary power supply of photovoltaic inverter start-up circuit according to claim 1, it is characterised in that：The triode Q1, triode Q2 are NPN type triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720501832.0U CN206977310U (en) | 2017-05-08 | 2017-05-08 | A kind of auxiliary power supply of photovoltaic inverter start-up circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720501832.0U CN206977310U (en) | 2017-05-08 | 2017-05-08 | A kind of auxiliary power supply of photovoltaic inverter start-up circuit |
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| Publication Number | Publication Date |
|---|---|
| CN206977310U true CN206977310U (en) | 2018-02-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720501832.0U Active CN206977310U (en) | 2017-05-08 | 2017-05-08 | A kind of auxiliary power supply of photovoltaic inverter start-up circuit |
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| CN (1) | CN206977310U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113690974A (en) * | 2021-08-19 | 2021-11-23 | 深圳诺倍能电子技术有限公司 | Undervoltage protection and slow start circuit |
-
2017
- 2017-05-08 CN CN201720501832.0U patent/CN206977310U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113690974A (en) * | 2021-08-19 | 2021-11-23 | 深圳诺倍能电子技术有限公司 | Undervoltage protection and slow start circuit |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200528 Address after: Shenzhen Nanshan District City, Guangdong province 518000 Pine Industrial Park outside the small Thai Bai Lu Bai mang mulberry Patentee after: MOSO POWER SUPPLY TECHNOLOGY Co.,Ltd. Address before: 518000 area a, floor 1 - area a, floor 7, building 1, No. 1061, xisongbai Road, Nanshan District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN MOSO ELECTRIC Co.,Ltd. |
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| TR01 | Transfer of patent right |