CN102368666A - Inverter and auxiliary power supply thereof - Google Patents
Inverter and auxiliary power supply thereof Download PDFInfo
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- CN102368666A CN102368666A CN2011103393615A CN201110339361A CN102368666A CN 102368666 A CN102368666 A CN 102368666A CN 2011103393615 A CN2011103393615 A CN 2011103393615A CN 201110339361 A CN201110339361 A CN 201110339361A CN 102368666 A CN102368666 A CN 102368666A
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- 230000006641 stabilisation Effects 0.000 claims description 6
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- 238000010586 diagram Methods 0.000 description 15
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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
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- 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 invention discloses an inverter and an auxiliary power supply thereof. The auxiliary power supply comprises an input interface module and an output module, wherein the output module comprises at least one forward conversion unit; each forward conversion unit comprises a switching power supply control chip; and the input interface module acquires power from the power grid voltage and processes the power grid voltage to provide the first DC (direct current) voltage to the DC bus of the forward conversion unit and provide the second DC voltage to the switching power supply control chip respectively. Through the technical scheme of the invention, as a self-powered loop is not required for the switching power supply control chip, loss is prevented even if the auxiliary power supply of the inverter inputs voltage in a wide range and the first DC voltage provided for the DC bus is excessively high, and the output efficiency of the entire system is improved. In addition, as the output module adopts the forward conversion unit, the auxiliary power supply meets the requirement for the increasing power level of the inverter.
Description
Technical field
The present invention relates to the voltage transformation field, relate in particular to a kind of inverter and accessory power supply thereof.
Background technology
The accessory power supply of inverter main circuit topology commonly used is single-ended reverse exciting conversion and double tube positive exciting conversion; But these two kinds of topologys all respectively have shortcoming: adopt the power volume of single-ended reverse exciting transformation topology little; The self-powered loss is little, and output current ripple is bigger, is applicable to small-power output occasion; Adopt the power volume of double tube positive exciting transformation topology bigger, the self-powered loss also raises along with input voltage and increases, and output current ripple is less, is applicable to high-power output occasion.
Stress down the double tube positive exciting transformation topology below; Circuit diagram in conjunction with traditional double tube positive exciting transformation topology shown in Figure 1; Switching Power Supply control chip U1 can select the UC284X family chip for use, is the kernel control chip of whole switching power circuit, and Switching Power Supply control chip U1 needs the continuous power supply of galvanic current pressure holding to work; And the function of the auxiliary power circuit of inverter itself is to the next stage circuit supply, so accessory power supply need design the self-powered loop.As shown in Figure 1; This double tube positive exciting topology course of work is: direct voltage Vdc gives capacitor C 1, C2 charging through resistance R 1; After capacitor C 1, C2 voltage reach the starting resistor of Switching Power Supply control chip U1; Switching Power Supply control chip U1 opens initial spike starts working switching tube G1, G2; At this moment transformer secondary winding begins to work on power, and the self-powered secondary winding of this transformer provides galvanic current to press Vcc to make Switching Power Supply control chip U1 steady operation, thereby makes entire circuit supply with the next stage circuit by regulated output voltage Vout.To make start-up circuit be that Switching Power Supply control chip U1 provides an initial starting resistor for resistance R 1, capacitor C 1 in the circuit; Diode D1 is a rectifier diode; Inductance L 1, capacitor C 2 are filter circuits; Resistance R 2 is used to unload with voltage stabilizing didoe D2 puts unnecessary energy, thereby makes the voltage of capacitor C 2 be stabilized in the voltage of voltage stabilizing didoe D2, and protection switch power supply control chip U1 is unlikely to overvoltage to be damaged.In Fig. 1, when direct voltage Vdc was low, the loss of resistance R 2, voltage stabilizing didoe D2, resistance R 1 was less.But when direct voltage Vdc increased, their loss also increased thereupon.The direct voltage Vdc of inverter accessory power supply is a wide region input, when input voltage Vdc is big, can reduce the delivery efficiency of whole system.
Along with improving constantly of inverter power grade; The accessory power supply power demand is also constantly increased; The single-ended reverse exciting transformation topology can not satisfy the design requirement of high-power accessory power supply, and the accessory power supply wide region input voltage of inverter also makes the self-powered loss of double tube positive exciting transformation topology very big.
Summary of the invention
The technical problem that the present invention will solve is; Accessory power supply to the above-mentioned inverter of prior art can not satisfy powerful requirement; Or when the wide region input voltage the big defective of self-powered loss; A kind of accessory power supply of inverter is provided, can satisfies powerful requirement, can when the wide region input voltage, reduce the self-powered loss again.
The technical solution adopted for the present invention to solve the technical problems is: the accessory power supply of constructing a kind of inverter; Said accessory power supply comprises input interface module and output module; Wherein, Said output module comprises at least one forward conversion unit, and each forward conversion unit comprises the Switching Power Supply control chip; Said input interface module is from the line voltage power taking, and line voltage is handled, and the dc bus that is respectively said forward conversion unit provides first direct voltage, and for said Switching Power Supply control chip second direct voltage is provided.
In accessory power supply of the present invention; Said input interface module comprises first rectification unit and the single-ended reverse exciting converter unit that links to each other successively; Said first rectification unit converts line voltage to first direct voltage; And exporting said dc bus to, said single-ended reverse exciting converter unit converts first direct voltage to second direct voltage, and is said Switching Power Supply control chip power supply.
In accessory power supply of the present invention; Said input interface module comprises first rectification unit and the BUCK converter unit that links to each other successively; Said first rectification unit converts line voltage to first direct voltage; And exporting said dc bus to, said BUCK converter unit converts first direct voltage to second direct voltage, and is said Switching Power Supply control chip power supply.
In accessory power supply of the present invention; Said input interface module comprises first rectification unit and the BUCK/BOOST converter unit that links to each other successively; Said first rectification unit converts line voltage to first direct voltage; And exporting said dc bus to, said BUCK/BOOST converter unit converts first direct voltage to second direct voltage, and is said Switching Power Supply control chip power supply.
In accessory power supply of the present invention; Said input interface module comprises first rectification unit that links to each other successively and recommends converter unit; Said first rectification unit converts line voltage to first direct voltage; And exporting said dc bus to, the said converter unit of recommending converts first direct voltage to second direct voltage, and is said Switching Power Supply control chip power supply.
In accessory power supply of the present invention; Said input interface module comprises first rectification unit and the linear voltage stabilization unit that links to each other successively; Said first rectification unit converts line voltage to first direct voltage; And exporting said dc bus to, said linear voltage stabilization unit converts first direct voltage to second direct voltage, and is said Switching Power Supply control chip power supply.
In accessory power supply of the present invention; Said input interface module comprises first rectification unit and second rectification unit; Said first rectification unit converts line voltage to first direct voltage; And exporting said dc bus to, said second rectification unit converts line voltage to second direct voltage, and is said Switching Power Supply control chip power supply.
In accessory power supply of the present invention, said first rectification unit is full-bridge rectification unit or half-bridge rectification unit.
The present invention also constructs a kind of inverter, comprises above-described accessory power supply.
In inverter of the present invention, said inverter is photovoltaic DC-to-AC converter or battery energy storage inverter.
The technical scheme of embodiment of the present invention; Line voltage is processed into the different direct voltage of two-way; One the tunnel is that the dc bus of a plurality of forward conversions unit in the output module provides first direct voltage; Another road is that the Switching Power Supply control chip of a plurality of forward conversions unit in the output module provides second direct voltage, like this, the Switching Power Supply control chip just can be under the continued power of the second stable direct voltage operate as normal; Thereby make entire circuit supply with the next stage circuit by regulated output voltage, realize the function of this accessory power supply.In this technical scheme; Owing to need not be Switching Power Supply control chip and design self-powered loop; Even so under the situation of the accessory power supply wide region input voltage of inverter; Provide to first direct voltage of dc bus when excessive, also can not produce loss, improved the delivery efficiency of whole system.In addition, because output module has adopted the forward conversion unit, also make this accessory power supply satisfy the requirement that the inverter power grade improves constantly.
Description of drawings
To combine accompanying drawing and embodiment that the present invention is described further below, in the accompanying drawing:
Fig. 1 is the circuit diagram of forward conversion unit of the accessory power supply of inverter in the prior art;
Fig. 2 is the building-block of logic of the accessory power supply embodiment one of inverter of the present invention;
Fig. 3 is the circuit diagram of forward conversion unit among Fig. 2;
Fig. 4 is the circuit diagram of input interface module embodiment one among Fig. 2;
Fig. 5 is the logic diagram of input interface module embodiment two among Fig. 2;
Fig. 6 is the logic diagram of input interface module embodiment three among Fig. 2;
Fig. 7 is the logic diagram of input interface module embodiment four among Fig. 2;
Fig. 8 is the logic diagram of input interface module embodiment five among Fig. 2;
Fig. 9 is the logic diagram of input interface module embodiment six among Fig. 2.
Embodiment
As shown in Figure 2; In the building-block of logic of the accessory power supply embodiment one of inverter of the present invention, this accessory power supply comprises continuous input interface module 100 and output module 200, wherein; Output module 200 comprise at least one forward conversion unit 210,220 ..., 230; And each forward conversion unit comprises the Switching Power Supply control chip, and in conjunction with forward conversion unit shown in Figure 3, this forward conversion unit comprises Switching Power Supply control control chip U1.Input interface module 100 is from the line voltage power taking, and line voltage is handled, and the dc bus that is respectively the forward conversion unit provides the first direct voltage Vdc, and for Switching Power Supply control chip U1 the second direct voltage Vcc is provided.
Implement the technical scheme of this embodiment; Line voltage is processed into the different direct voltage of two-way, and one the tunnel is that the dc bus of a plurality of forward conversions unit in the output module provides the first direct voltage Vdc, and another road is that the Switching Power Supply control chip U1 of a plurality of forward conversions unit in the output module provides the second direct voltage Vcc; Like this; Switching Power Supply control chip U1 just can be under the continued power of the second stable direct voltage operate as normal, it sends out ripple through control to switching tube G1, G2, and the secondary winding of transformer is worked on power; Thereby make entire circuit supply with the next stage circuit by regulated output voltage Vout, realize the function of this accessory power supply.In this embodiment, owing to need not be Switching Power Supply control chip U1 design self-powered loop, so, improved the delivery efficiency of whole system even, can not produce loss providing to first direct voltage of dc bus when excessive yet.In addition, because output module has adopted the forward conversion unit, also make this accessory power supply satisfy the requirement that the inverter power grade improves constantly.
Fig. 4 is the circuit diagram of input interface module embodiment one in the foregoing description one, and this input interface module comprises first rectification unit 111 and single-ended reverse exciting converter unit 121 that links to each other successively.Wherein, first rectification unit converts line voltage to first direct voltage Vdc, and exports dc bus to.Single-ended reverse exciting converter unit 121 converts the first direct voltage Vdc to second direct voltage Vcc, and is the Switching Power Supply control chip power supply of a plurality of forward conversions unit in the output module.
Fig. 5 is the logic diagram of input interface module embodiment two in the foregoing description one, and this input interface module comprises first rectification unit 111 and BUCK converter unit 122 that links to each other successively.First rectification unit 111 converts line voltage to first direct voltage Vdc, and exports dc bus to.BUCK converter unit 122 converts the first direct voltage Vdc to second direct voltage Vcc, and is the Switching Power Supply control chip power supply of a plurality of forward conversions unit in the output module.
Fig. 6 is the logic diagram of input interface module embodiment three in the foregoing description one, and this input interface module comprises first rectification unit 111 and BUCK/BOOST converter unit 123 that links to each other successively.First rectification unit 111 converts line voltage to first direct voltage Vdc, and exports dc bus to.BUCK/BOOST converter unit 123 converts the first direct voltage Vdc to second direct voltage Vcc, and is the Switching Power Supply control chip power supply of a plurality of forward conversions unit in the output module.
Fig. 7 is the logic diagram of input interface module embodiment four in the foregoing description one, and this input interface module comprises first rectification unit 111 that links to each other successively and recommends converter unit 124.First rectification unit 111 converts line voltage to first direct voltage Vdc, and exports dc bus to.Recommend converter unit 124 and convert the first direct voltage Vdc to second direct voltage Vcc, and be the Switching Power Supply control chip power supply of a plurality of forward conversions unit in the output module.
Fig. 8 is the logic diagram of input interface module embodiment five in the foregoing description one, and this input interface module comprises first rectification unit 111 and linear voltage stabilization unit 125 that links to each other successively.First rectification unit 111 converts line voltage to first direct voltage Vdc, and exports said dc bus to.Linear voltage stabilization unit 125 converts the first direct voltage Vdc to second direct voltage Vcc, and is the Switching Power Supply control chip power supply of a plurality of forward conversions unit in the output module.
Fig. 9 is the logic diagram of input interface module embodiment six in the foregoing description one, and this input interface module comprises first rectification unit 111 and second rectification unit 126.First rectification unit 111 converts line voltage to first direct voltage Vdc, and exports said dc bus to.Second rectification unit 126 converts line voltage to second direct voltage Vcc, and is the Switching Power Supply control chip power supply of a plurality of forward conversions unit in the output module.Preferably, second rectification unit 126 among this embodiment can be full-bridge rectification unit or half-bridge rectification unit.
Preferably, first rectification unit 111 among above-mentioned arbitrary embodiment can be full-bridge rectification unit or half-bridge rectification unit.
The present invention also constructs a kind of inverter, comprises the described accessory power supply of above arbitrary embodiment, and this inverter can be photovoltaic DC-to-AC converter or battery energy storage inverter.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the claim scope of the present invention.
Claims (10)
1. the accessory power supply of an inverter is characterized in that, said accessory power supply comprises input interface module and output module, and wherein, said output module comprises at least one forward conversion unit, and each forward conversion unit comprises the Switching Power Supply control chip; Said input interface module is from the line voltage power taking, and line voltage is handled, and the dc bus that is respectively said forward conversion unit provides first direct voltage, and for said Switching Power Supply control chip second direct voltage is provided.
2. accessory power supply according to claim 1; It is characterized in that; Said input interface module comprises first rectification unit and the single-ended reverse exciting converter unit that links to each other successively, and said first rectification unit converts line voltage to first direct voltage, and exports said dc bus to; Said single-ended reverse exciting converter unit converts first direct voltage to second direct voltage, and is said Switching Power Supply control chip power supply.
3. accessory power supply according to claim 1; It is characterized in that; Said input interface module comprises first rectification unit and the BUCK converter unit that links to each other successively, and said first rectification unit converts line voltage to first direct voltage, and exports said dc bus to; Said BUCK converter unit converts first direct voltage to second direct voltage, and is said Switching Power Supply control chip power supply.
4. accessory power supply according to claim 1; It is characterized in that; Said input interface module comprises first rectification unit and the BUCK/BOOST converter unit that links to each other successively, and said first rectification unit converts line voltage to first direct voltage, and exports said dc bus to; Said BUCK/BOOST converter unit converts first direct voltage to second direct voltage, and is said Switching Power Supply control chip power supply.
5. accessory power supply according to claim 1; It is characterized in that; Said input interface module comprises first rectification unit that links to each other successively and recommends converter unit that said first rectification unit converts line voltage to first direct voltage, and exports said dc bus to; The said converter unit of recommending converts first direct voltage to second direct voltage, and is said Switching Power Supply control chip power supply.
6. accessory power supply according to claim 1; It is characterized in that; Said input interface module comprises first rectification unit and the linear voltage stabilization unit that links to each other successively, and said first rectification unit converts line voltage to first direct voltage, and exports said dc bus to; Said linear voltage stabilization unit converts first direct voltage to second direct voltage, and is said Switching Power Supply control chip power supply.
7. accessory power supply according to claim 1; It is characterized in that; Said input interface module comprises first rectification unit and second rectification unit, and said first rectification unit converts line voltage to first direct voltage, and exports said dc bus to; Said second rectification unit converts line voltage to second direct voltage, and is said Switching Power Supply control chip power supply.
8. according to each described accessory power supply of claim 1-7, it is characterized in that said first rectification unit is full-bridge rectification unit or half-bridge rectification unit.
9. an inverter is characterized in that, comprises each described accessory power supply of claim 1-8.
10. inverter according to claim 9 is characterized in that, said inverter is photovoltaic DC-to-AC converter or battery energy storage inverter.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011103393615A CN102368666A (en) | 2011-11-01 | 2011-11-01 | Inverter and auxiliary power supply thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011103393615A CN102368666A (en) | 2011-11-01 | 2011-11-01 | Inverter and auxiliary power supply thereof |
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| CN102368666A true CN102368666A (en) | 2012-03-07 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104685779A (en) * | 2012-09-20 | 2015-06-03 | 依必安派特穆尔芬根有限两合公司 | Thermodynamic cycle process system |
| CN109861547A (en) * | 2019-03-14 | 2019-06-07 | 南京邮电大学 | A four-way output flyback switching power supply |
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| CN1114435A (en) * | 1995-06-23 | 1996-01-03 | 李建国 | Full-built-in in-line type uninterrupted power supply and switch power supply system for microcomputer |
| CN2678241Y (en) * | 2004-01-17 | 2005-02-09 | 缪耀东 | Electronic DC driver for high-voltage sodium lamp |
| CN1689217A (en) * | 2002-08-29 | 2005-10-26 | 松下电器产业株式会社 | Switching power supply |
| CN101651426A (en) * | 2009-09-10 | 2010-02-17 | 广州金升阳科技有限公司 | Self-starting control power converter of output terminal |
| CN201735932U (en) * | 2010-09-21 | 2011-02-09 | 深圳市华意隆实业发展有限公司 | Inverter type arc-welding machine with anti-sticking function and sticking arc lifting function |
-
2011
- 2011-11-01 CN CN2011103393615A patent/CN102368666A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1114435A (en) * | 1995-06-23 | 1996-01-03 | 李建国 | Full-built-in in-line type uninterrupted power supply and switch power supply system for microcomputer |
| CN1689217A (en) * | 2002-08-29 | 2005-10-26 | 松下电器产业株式会社 | Switching power supply |
| CN2678241Y (en) * | 2004-01-17 | 2005-02-09 | 缪耀东 | Electronic DC driver for high-voltage sodium lamp |
| CN101651426A (en) * | 2009-09-10 | 2010-02-17 | 广州金升阳科技有限公司 | Self-starting control power converter of output terminal |
| CN201735932U (en) * | 2010-09-21 | 2011-02-09 | 深圳市华意隆实业发展有限公司 | Inverter type arc-welding machine with anti-sticking function and sticking arc lifting function |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104685779A (en) * | 2012-09-20 | 2015-06-03 | 依必安派特穆尔芬根有限两合公司 | Thermodynamic cycle process system |
| CN104685779B (en) * | 2012-09-20 | 2017-05-03 | 依必安派特穆尔芬根有限两合公司 | Thermodynamic cycle process system |
| CN109861547A (en) * | 2019-03-14 | 2019-06-07 | 南京邮电大学 | A four-way output flyback switching power supply |
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Address after: 518055 Guangdong city in Shenzhen Province, Nanshan District, Xili Town Dragon Village Second Industrial Zone 5 Applicant after: Shenzhen's standing grain hopes electric limited company Address before: 518055 Guangdong city in Shenzhen Province, Nanshan District, Xili Town Dragon Village Second Industrial Zone 5 Applicant before: Shenzhen Hewang Electric Co., Ltd. |
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Address after: 518055 Guangdong city of Shenzhen province Nanshan District Xili town village official Liuzhou Industrial Zone No. 5 Building second layer 1-3 Applicant after: Shenzhen's standing grain hopes electric limited company Address before: 518055 Guangdong city in Shenzhen Province, Nanshan District, Xili Town Dragon Village Second Industrial Zone 5 Applicant before: Shenzhen's standing grain hopes electric limited company |
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Application publication date: 20120307 |