CN100340046C - Multifunctional power supply system of solar energy - Google Patents
Multifunctional power supply system of solar energy Download PDFInfo
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- CN100340046C CN100340046C CNB2003101082547A CN200310108254A CN100340046C CN 100340046 C CN100340046 C CN 100340046C CN B2003101082547 A CNB2003101082547 A CN B2003101082547A CN 200310108254 A CN200310108254 A CN 200310108254A CN 100340046 C CN100340046 C CN 100340046C
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Abstract
The present invention discloses a multifunctional solar power supply system which adopts a high-frequency chain inverter, a high-frequency AC transducer and a high-frequency AC / DC transducer. When a power network has a power cut, the present invention can transduce solar energy stored in a storage battery into AC power energy which is supplied to the power network or a load to keep the continuity of power supply; when the power network supplies power, the present invention can simultaneously supply power to the load and store the power energy of the power network in the storage battery; when the voltage of the power network is high or low, the present invention can supply stable AC voltage. The present invention only needs single-stage power transformation and has high efficiency; the present invention can transmit energy in two directions and can solve the technical problem that the conventional solar power supply system has low efficiency, one-way energy transmission, etc.; meanwhile, the present invention supplies continuous and stable power supply under the condition of abnormal power supply or power cut of the power network.
Description
Technical field
The present invention relates to electric power system, specifically a kind of multifuctional solar electric power system.
Background technology
As shown in Figure 1, be traditional solar electric power supply system.Solar cell is a direct current energy with solar energy converting, and be stored in the storage battery, high-frequency inverter is reverse into high-frequency ac voltage with direct current energy, realize electrical isolation and electric energy transmitting by high frequency transformer, high-frequency ac voltage after hf rectifier will be isolated is rectified into direct voltage, again through the line commutation inverter to electrical network or electric.
Traditional solar electric power supply system has following weak point:
1) power need pass through the two stage power conversion, and the on-state loss of system is bigger, and efficient is low;
2) system can only the one-way transmission energy, and promptly energy can only be from storage battery to electrical network or load transmission, and electrical network or load can not transmit energy to storage battery.
In many new application scenarios,, often need system to have the bidirectional energy transmittability such as new solar power system and electrical network cleaning system.Therefore, traditional solar electric power supply system can not adapt to new requirement.
Summary of the invention
Technical problem such as low and energy one-way transmission the object of the present invention is to provide a kind of multifuctional solar electric power system for the efficient that solves traditional solar electric power supply system.When grid cut-off, the solar energy converting that can will be stored in the storage battery becomes AC energy to supply with electrical network or load, keeps the continuity of power supply; When mains supply, when can power to the load with the power storage of electrical network in storage battery; When line voltage is higher or on the low side, can provide stable alternating voltage to load.
In order to achieve the above object, the technical solution used in the present invention is: it comprises solar cell, storage battery, high-frequency isolation transformer, eight field-effect transistors, eight diodes, two electric capacity and switch; Two inputs of described multifuctional solar electric power system directly link to each other with electrical network, and an input of the end of the same name of the first former limit winding of an end of first electric capacity, high-frequency isolation transformer and first plug-in strip of switch is connected in two inputs of described multifuctional solar electric power system; The input of second plug-in strip of the drain electrode of the other end of first electric capacity, first field-effect transistor, the negative electrode of first diode and switch is connected in another in two inputs of described multifuctional solar electric power system; The anode of first, second diode directly links to each other with the source electrode of first, second field-effect transistor; The negative electrode of the drain electrode of second field-effect transistor and second diode joins afterwards and the different name end of the first former limit winding of high-frequency isolation transformer joins; First output of described multifuctional solar electric power system directly links to each other with load with second output, one end of second electric capacity, the output of the different name end of the secondary winding of high-frequency isolation transformer and first plug-in strip of switch is connected in first output of described multifuctional solar electric power system; The other end of second electric capacity, the drain electrode of the 4th field-effect transistor, the output of the negative electrode of the 4th diode and second plug-in strip of switch is connected in second output of described multifuctional solar electric power system; Three, the source electrode of the anode and the 3rd of the 4th diode, the 4th field-effect transistor directly links to each other; The negative electrode of the drain electrode of the 3rd field-effect transistor and the 3rd diode joins afterwards and the end of the same name of the secondary winding of high-frequency isolation transformer joins; The positive pole of solar cell and storage battery, the negative electrode of five, the drain electrode of the 7th field-effect transistor and the 5th, the 7th diode is connected in first point jointly, the negative pole of solar cell and storage battery, the anode of the source electrode of the 6th, the 8th field-effect transistor and the 6th, the 8th diode is connected in second point jointly; The different name end of the second former limit winding of high-frequency isolation transformer and the drain electrode of the 6th field-effect transistor, the source electrode of the 7th field-effect transistor and the 6th diode cathode, the anode of the 7th diode is connected in thirdly jointly; The end of the same name of the second former limit winding of high-frequency isolation transformer, the source electrode of the 5th field-effect transistor, the anode of the drain electrode of the 8th field-effect transistor and the 5th diode, the negative electrode of the 8th diode is connected in the 4th point jointly.
Said switch is the semiconductor device that double-pole single throw or single-pole single-throw switch (SPST) maybe can turn-off.
Said field-effect transistor can replace with the transistor of other type.
The present invention compares with background technology; the useful effect that has is: it only needs single-stage power conversion, efficient height; and energy transmitted in both directions energy; can solve technical problems such as the low and energy one-way transmission of the efficient of traditional solar electric power supply system, and provide continuous, stable power supply under the situation of undesired at mains supply simultaneously or outage.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is traditional solar electric power supply system block diagram;
Fig. 2 is first embodiment of multifuctional solar electric power system of the present invention;
Fig. 3 is second embodiment of multifuctional solar electric power system of the present invention;
Fig. 4 is the 3rd embodiment of multifuctional solar electric power system of the present invention.
Embodiment
Embodiment 1
Embodiments of the invention 1 comprise solar cell as shown in Figure 2, storage battery, high-frequency isolation transformer T1, field-effect transistor Q1-Q8, diode D1-D8, capacitor C 1 and C2 and double-pole single throw S0, wherein high-frequency isolation transformer T1 is by three winding NP1, and NP2 and NS1 form.
The input A of the embodiment of the invention 1 directly links to each other with electrical network with B, an end of capacitor C 1, and the end of the same name (marking with stain among the figure) of the winding NP1 of high frequency transformer and the input 1 of double-pole single throw S0 are connected in input A; The other end of capacitor C 1, the drain electrode of field-effect transistor Q1, the input 2 of the negative electrode of diode D1 and double-pole single throw S0 is connected in input B; Diode D1, the anode of D2 and field-effect transistor Q1, the source electrode of Q2 directly link to each other; Different name end with winding NP1 after the negative electrode of the drain electrode of field-effect transistor Q2 and diode D2 joins joins; Output C directly links to each other with load with D, an end of capacitor C 2, and the different name end of the winding NS1 of high frequency transformer and the input 3 of double-pole single throw S0 are connected in output C; The other end of capacitor C 2, the drain electrode of field-effect transistor Q4, the input 4 of the negative electrode of diode D4 and double-pole single throw S0 is connected in output D; Diode D3, the anode of D4 and field-effect transistor Q3, the source electrode of Q4 directly link to each other; End of the same name (marking with stain among the figure) with winding NS1 after the negative electrode of the drain electrode of field-effect transistor Q3 and diode D3 joins joins; The positive pole of solar cell and storage battery, field-effect transistor Q5, the drain electrode of Q7 and diode D5, the negative electrode of D7 directly is connected in G point, the negative pole of solar cell and storage battery, field-effect transistor Q6, the source electrode of Q8 and diode D6, the anode of D8 directly are connected in the H point; The different name end of the winding NP2 of high frequency transformer T1 and the drain electrode of field-effect transistor Q6, the negative electrode of the source electrode of Q7 and diode D6, the anode of D7 are connected in the F point jointly; The end of the same name (marking with stain among the figure) of the second former limit winding NP2 and the source electrode of field-effect transistor Q5, the anode of the drain electrode of Q8 and diode D5, the negative electrode of D8 are connected in the E point jointly.
Embodiments of the invention 1 can will be stored in electricity of accumulator and convert AC energy supply electrical network or load to when grid cut-off, keep the continuity of power supply; Can be in powering load when mains supply with the power storage of electrical network in storage battery; When line voltage is higher or on the low side, can provide stable alternating voltage to load.
1) under the mains supply normal condition, field-effect transistor Q3, Q4 turn-offs, double-pole single throw S0 closure, electrical network directly powers to the load.Solar cell can become direct current energy to charge in batteries solar energy converting.If under the insufficient situation of solar energy, electrical network also can pass through by field-effect transistor Q1, Q2, diode D1, and D2, D5, D6, D7, D8, capacitor C 1, high-frequency ac/DC converter that the winding NP1 of high frequency transformer and NP2 form is to charge in batteries.
2) under the situation of grid cut-off, field-effect transistor Q1, Q2 turn-offs, double-pole single throw S0 closure is by field-effect transistor Q3, Q4, Q5, Q6, Q7, Q8, diode D3, D4, D5, D6, D7, the high-frequency chain inverter that winding NP2, the NS1 of D8, high frequency transformer and capacitor C 2 formed converts the direct current energy that solar cell and storage battery provide to required alternating voltage to electrical network or electric after isolating.
3) under the abnormal situation of mains supply, higher or on the low side such as line voltage, double-pole single throw S0 disconnects, by field-effect transistor Q1, Q2, Q3, Q4, diode D1, D2, D3, D4, winding NP1, the NS1 of high frequency transformer and capacitor C 1, the high-frequency ac converter that C2 forms can be transformed into stable alternating voltage with unsettled line voltage and offer load.Electrical network also can pass through by field-effect transistor Q1 simultaneously, Q2, diode D1, and D2, D5, D6, D7, the AC-dc converter that the winding NP1 of D8, high frequency transformer and NP2 form is to charge in batteries.
Embodiments of the invention 1 have adopted high-frequency chain inverter, high-frequency ac converter and high-frequency ac/DC converter; only need single-stage power conversion, efficient height; and function with transmitted in both directions energy; can solve technical problems such as the low and energy one-way transmission of the efficient of traditional solar electric power supply system, and provide continuous, stable power supply under the situation of undesired at mains supply simultaneously or outage.
Embodiments of the invention 2 comprise solar cell as shown in Figure 3, storage battery, high-frequency isolation transformer T1, field-effect transistor Q1-Q8, diode D1-D8, capacitor C 1 and C2 and single-pole single-throw switch (SPST) S0, wherein high-frequency isolation transformer T1 is by three winding NP1, and NP2 and NS1 form.
The input A of the embodiment of the invention 2 directly links to each other with electrical network with B, and the end of the same name (marking with stain among the figure) of an end of capacitor C 1 and the winding NP1 of high frequency transformer is connected in input A, and input A directly links to each other with output C; The other end of capacitor C 1, the drain electrode of field-effect transistor Q1, the input 1 of the negative electrode of diode D1 and single-pole single-throw switch (SPST) S0 is connected in input B; Diode D1, the anode of D2 and field-effect transistor Q1, the source electrode of Q2 directly link to each other; Different name end with winding NP1 after the negative electrode of the drain electrode of field-effect transistor Q2 and diode D2 joins joins; Output C directly links to each other with load with D, and the different name end of an end of capacitor C 2 and the winding NS1 of high frequency transformer is connected in output C; The other end of capacitor C 2, the drain electrode of field-effect transistor Q4, the input 2 of the negative electrode of diode D4 and single-pole single-throw switch (SPST) S0 is connected in output D; Diode D3, the anode of D4 and field-effect transistor Q3, the source electrode of Q4 directly link to each other; End of the same name (marking with stain among the figure) with winding NS1 after the negative electrode of the drain electrode of field-effect transistor Q3 and diode D3 joins joins; The positive pole of solar cell and storage battery, field-effect transistor Q5, the drain electrode of Q7 and diode D5, the negative electrode of D7 directly is connected in G point, the negative pole of solar cell and storage battery, field-effect transistor Q6, the source electrode of Q8 and diode D6, the anode of D8 directly are connected in the H point; The different name end of the second former limit winding NP2 of high frequency transformer T1 and the drain electrode of field-effect transistor Q6, the negative electrode of the source electrode of Q7 and diode D6, the anode of D7 are connected in the F point jointly; The end of the same name (marking with stain among the figure) of the second former limit winding NP2 and the source electrode of field-effect transistor Q5, the anode of the drain electrode of Q8 and diode D5, the negative electrode of D8 are connected in the E point.
Described single-pole single-throw switch (SPST) S0 can replace with the semiconductor device that can turn-off.
The operation principle of embodiments of the invention 2 is identical with embodiments of the invention 1, and difference is that the kind of switch S 0 is different with connected mode.
Embodiments of the invention 3 comprise solar cell as shown in Figure 4, storage battery, high-frequency isolation transformer T1, field-effect transistor Q1-Q8, diode D1-D8, capacitor C 1 and C2 and single-pole single-throw switch (SPST) S0, wherein high-frequency isolation transformer T1 is by three winding NP1, and NP2 and NS1 form.
The input A of the embodiment of the invention 3 directly links to each other with electrical network with B, an end of capacitor C 1, and the end of the same name (marking with stain among the figure) of the winding NP1 of high frequency transformer and the input 1 of single-pole single-throw switch (SPST) S0 are connected in input A; The other end of capacitor C 1, the negative electrode of the drain electrode of field-effect transistor Q1 and diode D1 is connected in input B, and input B directly links to each other with output D; Diode D1, the anode of D2 and field-effect transistor Q1, the source electrode of Q2 directly link to each other; Different name end with winding NP1 after the negative electrode of the drain electrode of field-effect transistor Q2 and diode D2 joins joins; Output C directly links to each other with load with D, an end of capacitor C 2, and the different name end of the winding NS1 of high frequency transformer and the input 2 of single-pole single-throw switch (SPST) S0 are connected in output C; The other end of capacitor C 2, the drain electrode of field-effect transistor Q4, the negative electrode of diode D4 is connected in output D; Diode D3, the anode of D4 and field-effect transistor Q3, the source electrode of Q4 directly link to each other; End of the same name (marking with stain among the figure) with winding NS1 after the negative electrode of the drain electrode of field-effect transistor Q3 and diode D3 joins joins; The positive pole of solar cell and storage battery, field-effect transistor Q5, the drain electrode of Q7 and diode D5, the negative electrode of D7 directly is connected in G point, the negative pole of solar cell and storage battery, field-effect transistor Q6, the source electrode of Q8 and diode D6, the anode of D8 directly are connected in the H point; The different name end of the second former limit winding NP2 of high frequency transformer T1 and the drain electrode of field-effect transistor Q6, the negative electrode of the source electrode of Q7 and diode D6, the anode of D7 are connected in the F point; The end of the same name (marking with stain among the figure) of the second former limit winding NP2 and the source electrode of field-effect transistor Q5, the anode of the drain electrode of Q8 and diode D5, the negative electrode of D8 are connected in the E point.
Described single-pole single-throw switch (SPST) S0 can replace with the semiconductor device that can turn-off.
The operation principle of embodiments of the invention 3 is identical with embodiments of the invention 1, and difference is with the kind of switch S 0 different with connected mode.
Claims (1)
1, a kind of multifuctional solar electric power system is characterized in that it comprises solar cell (BS1), storage battery (BT1), high-frequency isolation transformer (T1), eight field-effect transistors (Q1-Q8), eight diodes (D1-D8), two electric capacity (C1, C2) and switch (S0); Two inputs of described multifuctional solar electric power system (A, B) directly link to each other with electrical network, and an input (1) of the end of the same name of the first former limit winding (NP1) of an end of first electric capacity (C1), high-frequency isolation transformer and first plug-in strip of switch (S0) is connected in (A) in two inputs of described multifuctional solar electric power system; The input (2) of second plug-in strip of negative electrode of the drain electrode of the other end of first electric capacity (C1), first field-effect transistor (Q1), first diode (D1) and switch (S0) is connected in another (B) in two inputs of described multifuctional solar electric power system; (Q1, source electrode Q2) directly link to each other for the anode of first, second diode (D1, D2) and first, second field-effect transistor; The negative electrode of the drain electrode of second field-effect transistor (Q2) and second diode (D2) joins afterwards and the different name end of the first former limit winding (NP1) of high-frequency isolation transformer (T1) joins; First output of described multifuctional solar electric power system directly links to each other with load with second output (C, D), one end of second electric capacity (C2), the output (3) of the different name end of the secondary winding (NS1) of high-frequency isolation transformer (T1) and first plug-in strip of switch (S0) is connected in first output (C) of described multifuctional solar electric power system; The other end of second electric capacity (C2), the drain electrode of the 4th field-effect transistor (Q4), the output (4) of second plug-in strip of the negative electrode of the 4th diode (D4) and switch (S0) is connected in second output (D) of described multifuctional solar electric power system; Three, the 4th diode (D3, (Q3, source electrode Q4) directly link to each other for anode D4) and the 3rd, the 4th field-effect transistor; The negative electrode of the drain electrode of the 3rd field-effect transistor (Q3) and the 3rd diode (D3) joins afterwards and the end of the same name of the secondary winding (NS1) of high-frequency isolation transformer (T1) joins; The positive pole of solar cell (BS1) and storage battery (BT1), five, the 7th field-effect transistor (Q5, Q7) drain electrode and the 5th, the 7th diode (D5, D7) negative electrode is connected in first point jointly, the negative pole of solar cell and storage battery, six, the 8th field-effect transistor (Q6, source electrode Q8) and the 6th, (D6, anode D8) are connected in second point to the 8th diode jointly; The different name end of the second former limit winding (NP2) of high-frequency isolation transformer (T1) and the drain electrode of the 6th field-effect transistor (Q6), the negative electrode of the source electrode of the 7th field-effect transistor (Q7) and the 6th diode (D6), the anode of the 7th diode (D7) is connected in thirdly jointly; The end of the same name of the second former limit winding (NP2) of high-frequency isolation transformer (T1), the source electrode of the 5th field-effect transistor (Q5), the anode of the drain electrode of the 8th field-effect transistor (Q8) and the 5th diode (D5), the negative electrode of the 8th diode (D8) is connected in the 4th point jointly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CNB2003101082547A CN100340046C (en) | 2003-10-28 | 2003-10-28 | Multifunctional power supply system of solar energy |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2003101082547A CN100340046C (en) | 2003-10-28 | 2003-10-28 | Multifunctional power supply system of solar energy |
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| CN1540835A CN1540835A (en) | 2004-10-27 |
| CN100340046C true CN100340046C (en) | 2007-09-26 |
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| CNB2003101082547A Expired - Fee Related CN100340046C (en) | 2003-10-28 | 2003-10-28 | Multifunctional power supply system of solar energy |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102195525A (en) * | 2011-05-19 | 2011-09-21 | 南京航空航天大学 | Power supply system for photovoltaic (PV) building |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100411275C (en) * | 2006-10-30 | 2008-08-13 | 天津七所信息技术有限公司 | Solar energy intelligent controller |
| JP4643695B2 (en) * | 2008-09-02 | 2011-03-02 | 日立コンピュータ機器株式会社 | Bidirectional DC-DC converter and control method thereof |
| CN103460550B (en) * | 2011-03-24 | 2016-11-16 | 丰田自动车株式会社 | The charging system of power conversion apparatus, electric vehicle and electric vehicle |
| CN102842731B (en) * | 2012-08-23 | 2015-04-15 | 深圳市高斯宝电气技术有限公司 | Battery capacity grading and forming system |
| CN115497521B (en) * | 2022-11-08 | 2023-02-17 | 长鑫存储技术有限公司 | Power supply circuit, memory and electronic equipment |
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| CN2330097Y (en) * | 1998-06-01 | 1999-07-21 | 北京天力神光科技有限公司 | Full-automatic uninterrupted solar power supply machine |
| US6058035A (en) * | 1998-03-30 | 2000-05-02 | Sanyo Electric Co., Ltd. | Method and apparatus for supplying AC power to commercial power line by using sunlight |
| JP2000324720A (en) * | 1999-05-14 | 2000-11-24 | Nihon Protector Co Ltd | Uniterruptible dual power supply |
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2003
- 2003-10-28 CN CNB2003101082547A patent/CN100340046C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6058035A (en) * | 1998-03-30 | 2000-05-02 | Sanyo Electric Co., Ltd. | Method and apparatus for supplying AC power to commercial power line by using sunlight |
| CN2330097Y (en) * | 1998-06-01 | 1999-07-21 | 北京天力神光科技有限公司 | Full-automatic uninterrupted solar power supply machine |
| JP2000324720A (en) * | 1999-05-14 | 2000-11-24 | Nihon Protector Co Ltd | Uniterruptible dual power supply |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102195525A (en) * | 2011-05-19 | 2011-09-21 | 南京航空航天大学 | Power supply system for photovoltaic (PV) building |
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| CN1540835A (en) | 2004-10-27 |
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Assignee: Weifang Shengde New Energy Technology Co., Ltd. Assignor: Huang Minchao Contract record no.: 2010370000344 Denomination of invention: Multifunctional power supply system of solar energy Granted publication date: 20070926 License type: Exclusive License Open date: 20041027 Record date: 20100625 |
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Granted publication date: 20070926 Termination date: 20161028 |