CN100517159C - Solar power generating device - Google Patents
Solar power generating device Download PDFInfo
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- CN100517159C CN100517159C CNB2006100568392A CN200610056839A CN100517159C CN 100517159 C CN100517159 C CN 100517159C CN B2006100568392 A CNB2006100568392 A CN B2006100568392A CN 200610056839 A CN200610056839 A CN 200610056839A CN 100517159 C CN100517159 C CN 100517159C
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/66—Regulating electric power
- G05F1/67—Regulating electric power to the maximum power available from a generator, e.g. from solar cell
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
- A61J1/00—Containers specially adapted for medical or pharmaceutical purposes
- A61J1/14—Details; Accessories therefor
- A61J1/1412—Containers with closing means, e.g. caps
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Abstract
The invention relates to a solar energy generator, which can reduce the cost and avoid the effect of MPPT control of inverter at the initial of increase circuit, wherein the controller sets the maximum value Vmax of standard input voltage as 0; reading the present standard input voltage Vs detected by voltage sensor, to judge if the increase circuit is stopped; when it is stopped, reading Vmax to be compared with Vs; and when the standard input voltage Vs is lower than Vmax, judging if Vs is lower than the value that decreasing initial judging voltage Vn from Vmax; when it is lower, the timer starts to time; when said low-state is longer than the initial judging time Tn of inverter, the controller starts the increase circuit.
Description
Technical field
The present invention relates to a kind of solar power generating device, the output by the solar cell generating is provided.Specifically, relate to and a kind of the direct current power that is sent by solar cell is boosted, is transformed to alternating electromotive force and the solar power generating device that provides.
Background technology
As existing this solar power generating device, known have a following solar power generating device: the direct current power that is boosted and sent by solar cell by booster circuit, direct current power after will being boosted by inverter circuit is transformed to alternating electromotive force, by the alternating electromotive force after the control device control change, regenerate by in the source power supply system (for example, with reference to patent documentation 1).
And, characteristic as the solar cell that in above-mentioned solar power generating device, uses, the output voltage of solar cell from Vmax (no-load voltage) to maximum power point Pm till, output power increases gradually, surpass maximum power point Pm and voltage when descending, output voltage reduces gradually from maximum power point Pm.Therefore, as the control that obtains peak power from solar cell, known: by inverter circuit make the operating point of solar cell follow the tracks of maximum power point Pm all the time and the control of the MPPT maximum power point tracking that changes (Maximun PowerPoint Tracking (below, be called " MPPT control ")) (for example, with reference to patent documentation 2).
Patent documentation 1: TOHKEMY 2003-9398 communique
Patent documentation 2: Japanese kokai publication hei 11-282553 communique
Summary of the invention
; according to above-mentioned patent documentation 2 disclosed technology; a kind of solar power generating device; the solar panel of regulation sheet number is connected in series; can send specified; the standard solar cell that is the direct current power of standard is connected on the inverter circuit; and; pass through booster circuit; the solar panel polyphone that the sheet number is less than afore mentioned rules sheet number connect and the electric power that sends less than the direct current power of above-mentioned standard; the voltage of this direct current power is connected on the inverter circuit less than the end solar cell of the voltage of above-mentioned standard direct current power; in this solar power generating device; for example; when solar radiation sooner or later or during inclement weather is few; because the generated energy deficiency of solar cell makes inverter circuit become the intermittent running state; before entering continuous operating condition, under the situation of booster circuit entry into service, bring harmful effect may for the MPPT control of inverter circuit.
Therefore, need be under the state that can confirm the continuous working order of inverter circuit, the running of beginning booster circuit.At this moment, can by with the control of inverter circuit with communicating by letter between microcomputer, whether confirm in continuous running, and can voltage, current sensor be set, thereby measure the continuous running that electric power is confirmed inverter circuit at input part from the solar cell circuit of above-mentioned standard.
Yet, under the former situation, the inverter circuit that is suitable for communicating by letter, the problem that can not connect the inverter circuit that is unsuitable for communicating by letter appear being merely able to connect, in addition,, the problem that the parts number of packages increases, cost rises is arranged the latter.
So the present invention a little is a purpose to address the above problem, it had both been kept versatility, had avoided the rising of cost, can prevent from again to bring harmful effect to the MPPT control of inverter circuit when the booster circuit entry into service.
Therefore, first invention is a kind of solar power generating device, possesses: first solar cell, send the electric power of the DC voltage of assigned voltage; Second solar cell sends the electric power of the DC voltage lower than this first solar cell voltage; Booster circuit, the voltage of the electric power that sends by this second solar cell of boosting; Inverter circuit, electric power after will being boosted by this booster circuit and the direct current power that is sent by first solar cell are transformed to alternating electromotive force, and carry out MPPT maximum power point tracking control, this solar power generating device is characterised in that, possess: voltage sensor, detect the voltage of the direct current power that is sent by above-mentioned first solar cell; Timer begins to generate electricity and starting that the detection voltage of above-mentioned voltage sensor deducts above-mentioned booster circuit smaller or equal to the maximum output voltage from above-mentioned first solar cell is judged and carried out timing the continuous time of the state of the resulting voltage of voltage to above-mentioned first solar cell and second solar cell; Control device is controlled, make this timer timing the starting of above-mentioned inverter circuit begin the running of above-mentioned booster circuit when judging the time.
In addition, second invention is a kind of solar power generating device, possesses: first solar cell, send the electric power of the DC voltage of assigned voltage; Second solar cell sends the electric power of the DC voltage lower than this first solar cell voltage; Booster circuit, the voltage of the electric power that sends by this second solar cell of boosting; Inverter circuit, electric power after will being boosted by this booster circuit and the direct current power that is sent by first solar cell are transformed to alternating electromotive force, and carry out MPPT maximum power point tracking control, this solar power generating device is characterised in that, possess: voltage sensor, detect the voltage of the direct current power that is sent by above-mentioned first solar cell; Timer begins to generate electricity to above-mentioned first solar cell and second solar cell and carries out continuous time that the detection voltage of above-mentioned voltage sensor deducts the state of the voltage that predefined voltage obtains smaller or equal to the maximum output voltage from above-mentioned first solar cell timing; Control device is controlled, and begins the running of above-mentioned booster circuit during stipulated time that made this timer timing.
According to the present invention, neither need to make inverter circuit be suitable for communicating by letter and keep versatility, avoid the rising of cost, when the booster circuit entry into service, can avoid again bringing harmful effect to the MPPT control of inverter circuit.
Description of drawings
Fig. 1 is the system diagram of the total system of solar power generating device.
Fig. 2 is the circuit diagram of the built-in coupling arrangement of booster circuit.
The process flow diagram of the control when Fig. 3 is the starting of explanation booster circuit.
Symbol description
1,2,3: solar cell (first solar cell); 4,5: end solar cell (second solar cell); 6: coupling arrangement; 7: power governor; 8: inverter circuit; 16A, 16B: booster circuit; 23: the four voltage sensors; 24: control device; 25: timer.
Embodiment
Below, embodiments of the present invention are described with reference to the accompanying drawings.Fig. 1 is the system diagram of the total system of expression solar power generating device.In Fig. 1,1～3rd, the solar cell of following standard (first solar cell), sheet number, 5 solar panels for example of the regulation that promptly is connected in series, can send specified, be the direct current power of standard; 4 and 5 is following end solar cells (second solar cell), promptly be connected in series and be less than the sheet number of regulation sheet number, 3 solar panels for example, the direct current power that sends is less than the direct current power of above-mentioned standard, and the voltage of this direct current power is less than the voltage of the direct current power of above-mentioned standard.
In addition, the 6th, booster circuit described later (DC/DC converter) is built in the coupling arrangement among the casing 6A, the 7th, be connected to this coupling arrangement 6 and possess the power governor of inverter circuit 8, this power governor 7 is connected in the commercial power system.And, power governor 7 is in order to obtain peak power from solar cell, carries out following the tracks of maximum power point all the time and the MPPT control (Maximun Power Point Tracking control) of the MPPT maximum power point tracking control that changes as the operating point that makes solar cell.
Below, describe above-mentioned coupling arrangement 6 in detail according to Fig. 2.10A, 10B, 10C are connected standard input circuit on the solar cell 1,2,3 of standard by terminal 11A, 11B, 11C respectively, and to be set to number identical with connected solar cell.In addition, 12A, 12B, 12C be connected standard input circuit 10A, 10B, 10C outgoing side prevent the diode that adverse current is used.
16A, 16B are booster circuit (DC/DC converters), and booster circuit 16A, 16B are connected on the end solar cell 4,5 by terminal 17A, 17B and first, second voltage sensor 18A, 18B.The 22nd, detect the tertiary voltage sensor of the output voltage of booster circuit 16A, 16B, the 23rd, the 4th voltage sensor of the output voltage of examination criteria input circuit 10A, 10B, 10C (below, be called " standard input voltage ").At this, the control power supply of booster circuit 16A, 16B is obtained from end solar cell 4,5, therefore, can not become the load of solar cell 1,2,3.
The 24th, as the control device of microcomputer, this control device 24 possesses not shown CPU (CPU (central processing unit)), RAM (random access memory), ROM (ROM (read-only memory)) and timer 25, also has input voltage test section 26 and output voltage test section 27.In addition, (pulse width modulation: pulse-length modulation) control circuit (pulse width modulation control circuit) 28 outputs to booster circuit 16A, 16B with control signal to control device 24 by PWM.And above-mentioned coupling arrangement 6 is connected on the power governor 7 by outgoing side terminal 30.
Below, according to process flow diagram shown in Figure 3, the action of solar power generating device is described, the action when particularly starting.At first, control device 24 is made as 0 (being reset to zero) with the maximal value Vmax of standard input voltage, reads in the 4th voltage sensor 23 detected Current Standard input voltage Vs.Then, control device 24 judges whether booster circuit 16A, 16B stop, and when stopping, reading in the standard input voltage maximal value Vmax that preestablishes and be stored among the above-mentioned RAM, compares with above-mentioned Current Standard input voltage Vs.
And, as this Current Standard input voltage Vs during, judge whether this Current Standard input voltage Vs is lower than from standard input voltage maximal value Vmax to deduct value after voltage Vn is judged in the booster circuit starting that preestablishes and be stored in the above-mentioned RAM smaller or equal to standard input voltage maximal value Vmax.And, under situation about being lower than, timer 25 picks up counting, be longer than the starting of the inverter circuit 8 that is stored in advance among the RAM when this low state continuance and judge time (can be judged as the time that inverter circuit 8 turns round continuously) Tn, timer 25 timing starting judge time T n and overtime the time, the inverter circuit 8 that control device 24 is judged as power governor 7 has started, and initiating signal is outputed to booster circuit 16A, 16B, each booster circuit 16A, 16B entry into service.
Like this, according to standard input voltage Vs, voltage Vn is judged in standard input voltage maximal value Vmax and booster circuit starting, after the continuous running of timing judgement inverter circuit 8 by timer 25, each booster circuit 16A, the 16B entry into service, therefore, do not need to make the inverter circuit 8 that is arranged in the power governor 7 to be suitable for communication, thereby can either keep versatility, and need not at standard input circuit 10A, 10B, the 10C side is provided with current sensor etc. and avoids the rising of cost, again can be at booster circuit 16A, avoid during the 16B entry into service bringing harmful effect to the MPPT control of inverter circuit 8.
In addition, read in standard input voltage maximal value Vmax, when comparing with Current Standard input voltage Vs, when control device 24 is judged as this Current Standard input voltage Vs overgauge input voltage maximal value Vmax, make Current Standard input voltage Vs be maintained standard input voltage maximal value Vmax.In addition, under the situation of above-mentioned Current Standard input voltage Vs smaller or equal to standard input voltage maximal value Vmax, judge whether Current Standard input voltage Vs is lower than the value after standard input voltage maximal value Vmax deducts the booster circuit starting judgement voltage Vn that preestablishes and be stored in the above-mentioned RAM, when being judged to be when being not less than, same with the situation that is judged to be Vs＞Vmax, the timing time of above-mentioned timer 25 is made as 0 (being reset to zero), stops the running of booster circuit 16A, 16B.
In addition, above-mentioned Current Standard input voltage Vs is smaller or equal to standard input voltage maximal value Vmax and judge whether Current Standard input voltage Vs is lower than the value after standard input voltage maximal value Vmax deducts the booster circuit starting judgement voltage Vn that preestablishes and be stored in the above-mentioned RAM, when being judged to be under the situation about being lower than, timer 25 picks up counting, and also keeps the halted state of booster circuit 16A, 16B during till overtime.
In addition, start above-mentioned each booster circuit 16A, behind the 16B, according to by first, the second voltage sensor 18A, the detected end solar cell 4 of 18B, 5 output voltage, by tertiary voltage sensor 22 detected booster circuit 16A, the output voltage of 16B, and by the 4th voltage sensor 23 detected standard input circuit 10A, 10B, the output voltage of 10C, the input voltage test section 26 and the output voltage test section 27 of control device 24 move, control device 24 is by pwm control circuit 28 control booster circuit 16A, 16B, each booster circuit 16A, the output voltage of 16B and standard input circuit 10A, 10B, the output voltage of 10C remains identical, and the electric power of assigned voltage is provided from solar power generating device.
Embodiments of the present invention more than have been described, but according to the above description, can have been various replacement examples, revise or distortion, comprised above-mentioned various replacement example without departing from the spirit and scope of the present invention, revise or distortion.
Claims (4)
1. solar power generating device possesses: first solar cell, send the electric power of the DC voltage of assigned voltage; Second solar cell sends the electric power of the DC voltage lower than this first solar cell voltage; Booster circuit, the voltage of the electric power that sends by this second solar cell of boosting; Inverter circuit, electric power after will being boosted by this booster circuit and the direct current power that is sent by first solar cell are transformed to alternating electromotive force, and carry out MPPT maximum power point tracking control, it is characterized in that this solar power generating device possesses:
Voltage sensor detects the voltage of the direct current power that is sent by above-mentioned first solar cell; Timer begins to generate electricity and starting that the detection voltage of above-mentioned voltage sensor deducts above-mentioned booster circuit smaller or equal to the maximum output voltage from above-mentioned first solar cell is judged and carried out timing the continuous time of the state of the resulting voltage of voltage to above-mentioned first solar cell and second solar cell; Control device is controlled, make this timer timing the starting of above-mentioned inverter circuit begin the running of above-mentioned booster circuit when judging the time.
2. solar power generating device according to claim 1, it is characterized in that, when the detection voltage of above-mentioned voltage sensor deducts the resulting voltage of starting judgement voltage of above-mentioned booster circuit greater than the maximum output voltage from above-mentioned first solar cell, above-mentioned control device is controlled, above-mentioned timer is reset to zero and stop the running of above-mentioned booster circuit.
3. solar power generating device according to claim 1 and 2 is characterized in that, till above-mentioned timer has picked up counting up to timing starting judgement time of above-mentioned inverter circuit during in, the operating condition of above-mentioned booster circuit remains and stops.
4. solar power generating device according to claim 1 and 2 is characterized in that, also comprises pulse width modulation control circuit, and above-mentioned control device outputs to above-mentioned booster circuit by above-mentioned pulse width modulation control circuit with control signal.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005097643 | 2005-03-30 | ||
| JP2005097643A JP4794189B2 (en) | 2005-03-30 | 2005-03-30 | Solar power plant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1841254A CN1841254A (en) | 2006-10-04 |
| CN100517159C true CN100517159C (en) | 2009-07-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100568392A Expired - Fee Related CN100517159C (en) | 2005-03-30 | 2006-03-07 | Solar power generating device |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP1708070B1 (en) |
| JP (1) | JP4794189B2 (en) |
| KR (1) | KR100993652B1 (en) |
| CN (1) | CN100517159C (en) |
| AT (1) | ATE394727T1 (en) |
| DE (1) | DE602006001067D1 (en) |
| ES (1) | ES2306310T3 (en) |
| TW (1) | TWI400594B (en) |
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| KR100452967B1 (en) | 2002-04-24 | 2004-10-14 | 헥스파워시스템(주) | Apparatus and method for controlling power controller for solar power generation |
| JP2004146791A (en) * | 2002-07-31 | 2004-05-20 | Kyocera Corp | Solar power generation device |
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2005
- 2005-03-30 JP JP2005097643A patent/JP4794189B2/en active Active
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2006
- 2006-02-16 KR KR1020060014875A patent/KR100993652B1/en not_active IP Right Cessation
- 2006-03-07 CN CNB2006100568392A patent/CN100517159C/en not_active Expired - Fee Related
- 2006-03-13 TW TW095108349A patent/TWI400594B/en not_active IP Right Cessation
- 2006-03-14 ES ES06005204T patent/ES2306310T3/en active Active
- 2006-03-14 AT AT06005204T patent/ATE394727T1/en not_active IP Right Cessation
- 2006-03-14 EP EP06005204A patent/EP1708070B1/en not_active Not-in-force
- 2006-03-14 DE DE602006001067T patent/DE602006001067D1/en active Active
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| US5327071A (en) * | 1991-11-05 | 1994-07-05 | The United States Of America As Represented By The Administrator Of The National Aeronautics & Space Administration | Microprocessor control of multiple peak power tracking DC/DC converters for use with solar cell arrays |
| CN1230709A (en) * | 1998-03-30 | 1999-10-06 | 三洋电机株式会社 | Solar generating device |
| US20020149950A1 (en) * | 2001-04-13 | 2002-10-17 | Tsukasa Takebayashi | Power conditioner for solar power generation system |
| CN1337775A (en) * | 2001-06-29 | 2002-02-27 | 黎进华 | Solar power generator and its inversion step-up circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| TW200643678A (en) | 2006-12-16 |
| KR20060106646A (en) | 2006-10-12 |
| EP1708070A1 (en) | 2006-10-04 |
| KR100993652B1 (en) | 2010-11-10 |
| DE602006001067D1 (en) | 2008-06-19 |
| ES2306310T3 (en) | 2008-11-01 |
| CN1841254A (en) | 2006-10-04 |
| TWI400594B (en) | 2013-07-01 |
| ATE394727T1 (en) | 2008-05-15 |
| JP4794189B2 (en) | 2011-10-19 |
| JP2006278858A (en) | 2006-10-12 |
| EP1708070B1 (en) | 2008-05-07 |
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