JPS5840417B2 - solar power supply device - Google Patents
solar power supply deviceInfo
- Publication number
- JPS5840417B2 JPS5840417B2 JP49060744A JP6074474A JPS5840417B2 JP S5840417 B2 JPS5840417 B2 JP S5840417B2 JP 49060744 A JP49060744 A JP 49060744A JP 6074474 A JP6074474 A JP 6074474A JP S5840417 B2 JPS5840417 B2 JP S5840417B2
- Authority
- JP
- Japan
- Prior art keywords
- solar cell
- inverter
- load
- output
- power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- 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
Landscapes
- Photovoltaic Devices (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Inverter Devices (AREA)
Description
【発明の詳細な説明】 本発明は太陽電池電力供給装置に関する。[Detailed description of the invention] The present invention relates to a solar cell power supply device.
石油不足の問題から電力不足の問題が提起され、太陽光
エネルギーを実用化する計画が急速に進んできた。The problem of oil shortages has led to the problem of power shortages, and plans to put solar energy to practical use have rapidly progressed.
即ち太陽電池を電力源として電力消費ブロックに設置し
、負荷に電力を供給しようというものである。That is, a solar cell is installed as a power source in a power consumption block to supply power to a load.
電力消費ブロックとして各家庭や工場ビルなどがそれで
ある。Households, factory buildings, etc. are power consumption blocks.
ここで従来の太陽電池の使い方は、太陽電池を独立の電
力源とし、この独立電力源によって負荷を駆動するもの
であった。Here, the conventional way of using solar cells is to use the solar cells as an independent power source, and to drive a load with this independent power source.
しかるに例えば各家庭では太陽光発電の利用できる昼間
の時間は、夏季クーラー用電力需要が異常に大きくなる
以外は、一般には電力消費は極めて低い。However, for example, during the daytime hours when solar power generation is available in each household, electricity consumption is generally extremely low, except for an abnormally large demand for electricity for summer coolers.
従って太陽電池を電力源として電力消費ブロックに設置
することを考えた場合、一般家庭では夏季の一部の期間
を除きその要求はさほど大きくない。Therefore, when considering installing solar cells as a power source in a power consumption block, the demand for such solar cells is not so great in general households except during a part of the summer.
加えて太陽電池は高価なものである。従ってこれらの要
因から、太陽光エネルギーの実用化の計画が一般家庭を
対象とすることについて大きな期待をいだくことは困難
であった。Additionally, solar cells are expensive. Therefore, due to these factors, it was difficult to have high expectations that plans for practical application of solar energy would be targeted at ordinary households.
本発明は上記の点に鑑みてなされたもので、昼間の太陽
光の利用を効率よく行ない、もって経済性を大きく向上
させることによって一般家庭でも設置可能とし、今日の
石油不足からくる電力不足の問題を解決することを目的
とする。The present invention has been made in view of the above points, and it makes efficient use of daytime sunlight, greatly improving economic efficiency, making it possible to install it even in ordinary households, and solving the power shortage caused by today's oil shortage. The purpose is to solve problems.
即ち本発明は太陽電池をインバータを介して負荷に接続
すると共にこれと並列に商用電源を接続し、インバータ
出力と商用電源によって負荷を駆動することより、商用
電源、即ち系統電力線を二次電池と等価と考える得るよ
うにした電力供給装置である。That is, the present invention connects a solar cell to a load via an inverter, connects a commercial power source in parallel, and drives the load using the inverter output and the commercial power source, thereby converting the commercial power source, that is, the grid power line, into a secondary battery. This is a power supply device that can be considered equivalent.
さらに具体的に述べるならば、本発明は太陽電池出力を
インバータ例えば他制他励ＤＣ−ＡＣインバータによっ
て交流に変換し、この交流出力を負荷に供給すると共に
商用電源線も負荷に並列に接続し、太陽電池出力が負荷
の変動によらず常にほぼ一定になるようにインバータを
制御することを特徴とする太陽電池電力供給装置である
。More specifically, the present invention converts the solar cell output into AC using an inverter, such as a separately excited DC-AC inverter, supplies this AC output to the load, and connects the commercial power line in parallel to the load. , is a solar cell power supply device characterized by controlling an inverter so that the solar cell output is always substantially constant regardless of load fluctuations.
このように太陽電池出力が負荷の変動によらず一定にな
るように構成することにより、負荷が減少又は零になっ
た時は自動的に太陽電池で発生された電力は商用電源側
に戻され、電力を要求している他の場所例えばビルや工
場などで使用することができる。By configuring the system so that the solar cell output remains constant regardless of load fluctuations, when the load decreases or becomes zero, the power generated by the solar cells is automatically returned to the commercial power source. It can also be used in other places that require electricity, such as buildings and factories.
この時は積算電力計を逆流させる。一方夜間など電力が
必要で太陽電池による電力供給が望めない時には商用電
源から電力を得ることができる。At this time, reverse the current on the integrated wattmeter. On the other hand, when electricity is needed, such as at night, and solar cells cannot provide power, it is possible to obtain electricity from a commercial power source.
即ち、本発明によれば商用電源を二次電池と等価と考え
ることができ、昼夜を問わず効率よく電力供給ができる
。That is, according to the present invention, a commercial power source can be considered equivalent to a secondary battery, and power can be efficiently supplied regardless of day or night.
次に図面を参照して本発明の一実施例を説明する。Next, an embodiment of the present invention will be described with reference to the drawings.
第１図に示す如く太陽電池１の出力に他制他励のＤＣ−
ＡＣインバータ２を接続し、該インバータ２の出力に負
荷３を接続し、前記インバータ２の出力に商用電源４を
積算電力計５を介して接続する。As shown in Fig. 1, the output of the solar cell 1 is externally excited by DC-
An AC inverter 2 is connected, a load 3 is connected to the output of the inverter 2, and a commercial power source 4 is connected to the output of the inverter 2 via an integrating wattmeter 5.
さらに前記太陽電池１の出力電圧を検知しこれと基準電
圧源７から供給される基準電圧とを比較器１０で比較し
、比較した偏差が供給される如く増幅器６を接続する。Furthermore, the output voltage of the solar cell 1 is detected and compared with the reference voltage supplied from the reference voltage source 7 by a comparator 10, and the amplifier 6 is connected so that the compared deviation is supplied.
前記増幅器６の出力には移相器８を接続し、偏差信号の
大きさにより、すなわち増幅器６の出力により前記イン
バータ２の位相を制御する如く接続して太陽電池電力供
給装置を構成したものである。A phase shifter 8 is connected to the output of the amplifier 6, and connected so that the phase of the inverter 2 is controlled according to the magnitude of the deviation signal, that is, the output of the amplifier 6, thereby configuring a solar cell power supply device. be.
前記増幅器６、移相器８、基準電圧源Ｔから制御装置９
を構成する。The amplifier 6, phase shifter 8, reference voltage source T to the control device 9
Configure.
この太陽電池電力供給装置を家庭に設置する例について
説明する。An example of installing this solar cell power supply device in a home will be explained.
即ち、電灯線など商用電源４から例えば５０Ｈｚの電力
を供給すると仮定すると、インバータ２を経て得られる
太陽電池の出力も同一周波数の５０Ｈｚが得られる。That is, assuming that, for example, 50 Hz power is supplied from a commercial power source 4 such as a power line, the output of the solar cell obtained via the inverter 2 will also have the same frequency of 50 Hz.
インバータ２は商用電源から太陽電池への電力の逆流を
防止している。The inverter 2 prevents backflow of power from the commercial power source to the solar cells.
太陽電池１の出力は例えばＩＫＷＨの電力が得られるよ
うに例えば屋根などに１０ｍ２の面積に形成する。The solar cell 1 is formed in an area of 10 m2 on the roof, for example, so that the output of the solar cell 1 is, for example, IKWH power.
このように構成した太陽電池電力供給装置は次のように
動作する。The solar battery power supply device configured as described above operates as follows.
太陽光が照射している時太陽電池１によって光電変換さ
れて得られた直流電圧はインバータ２で交流に変換され
、５０Ｈｚの電力が家庭内の負荷３に供給される。When sunlight is shining, the DC voltage obtained by photoelectric conversion by the solar cell 1 is converted to AC by the inverter 2, and 50 Hz power is supplied to the load 3 in the home.
この時、太陽電池１の出力電圧を増幅器６により検出し
、この検出電圧と予め定めた基準電圧源７からの基準電
圧と比較して偏差電圧を得、この偏差電圧により移相器
８を介してインバータ２の制御進み角を制御して太陽電
池１の出力電圧を負荷の変動に関係なく一定になるよう
に制御装置９により制御する。At this time, the output voltage of the solar cell 1 is detected by the amplifier 6, and this detected voltage is compared with a reference voltage from a predetermined reference voltage source 7 to obtain a deviation voltage. The control device 9 controls the control advance angle of the inverter 2 so that the output voltage of the solar cell 1 is constant regardless of load fluctuations.
このように太陽電池１の出力電圧を一定に制御すること
は太陽電池１を常に最適動作特性で動作させることを意
味する。Controlling the output voltage of the solar cell 1 to be constant in this way means that the solar cell 1 is always operated with optimum operating characteristics.
即ち、太陽電池の特性は第２図に示すような特性である
。That is, the characteristics of the solar cell are as shown in FIG.
第２図は日照量の変化による太陽電池出力の電流−電圧
特性で、Ｌｌ ｔ Ｌ２ ｔ Ｌ３は夫々の入射光量を
示し、Ｐｌ、Ｐ２．Ｐ３は最適動作点を示し、ＲＬＩ
ｔ ＲＬ２ｔＲＬ３は最適負荷を示し、Ｖｌ、ｖ２．Ｖ
３は最適動作電圧を示す。FIG. 2 shows the current-voltage characteristics of the solar cell output due to changes in the amount of sunlight, where Ll t L2 t L3 represents the amount of incident light, Pl, P2 . P3 indicates the optimal operating point, RLI
tRL2tRL3 indicates the optimal load, Vl, v2. V
3 indicates the optimum operating voltage.
即ち電流は入射光量に比例するため太陽電池動作を最適
化するためにはその負荷抵抗を入射光量に応じて変えな
ければならないが、ここでは太陽電池１の出力電圧をＶ
ｌ、■２．Ｖ３で示す如くほぼ一定に制御することによ
り、太陽電池を常に最適動作条件で動作させるようにし
ている。In other words, the current is proportional to the amount of incident light, so in order to optimize the solar cell operation, the load resistance must be changed according to the amount of incident light.
l, ■2. As shown by V3, the solar cell is always operated under the optimum operating condition by controlling it to be almost constant.
このような制御を第１図回路では次のように行っている
。Such control is performed in the circuit shown in FIG. 1 as follows.
即ち家庭内負荷３の消費量が減少した時は、太陽電池１
からの電流が減少し、太陽電池１の出力電圧は増大しイ
ンバータ２を介して積算電力計５を逆流して電灯線の商
用電源４方向に供給する。In other words, when the consumption of household load 3 decreases, solar battery 1
The current from the solar cell 1 decreases, and the output voltage of the solar cell 1 increases, which flows backward through the integrated wattmeter 5 via the inverter 2 and is supplied to the commercial power source 4 of the power line.
この発明はローカルな負荷３が零又は小さい時は太陽電
池により得られた電力を商用電源４側に供給し、他の需
要者に供給する。In this invention, when the local load 3 is zero or small, the power obtained by the solar cell is supplied to the commercial power source 4 side, and is then supplied to other consumers.
そして曇りの日や雨の日そして夜などは太陽電池１の出
力電圧がなくなるので、この時には、商用電源４から積
算電力計５を介して家庭内負荷３は電力の供給を受ける
。Since the output voltage of the solar cell 1 disappears on cloudy days, rainy days, and at night, the household load 3 receives power from the commercial power source 4 via the integrating wattmeter 5 at this time.
さらにまた太陽光の照射時間中でも、家庭内負荷３の需
要量が多く、太陽電池１の出力だけでは足りない場合は
、太陽電池１の出力の足りない電力を商用電源４から積
算電力計５を介して補給して家庭内負荷３に供給する。Furthermore, even during the sunlight irradiation time, if the demand of the domestic load 3 is large and the output of the solar cell 1 is not enough, the insufficient power of the solar cell 1 is transferred from the commercial power source 4 to the integrated wattmeter 5. The household load 3 is supplied through the supply line.
このように作用する太陽電池電力供給装置は負荷での消
費がない時や残余のある時は積算電力計を逆流させて商
用電源側に供給する方式であるため、太陽電池設置者は
、逆流分だけ積算電力計のメータ指示値を差引きできる
。Solar battery power supply devices that operate in this manner reverse the integrated wattmeter and supply it to the commercial power source when there is no consumption by the load or when there is residual power, so the solar battery installer must can be subtracted from the meter reading of the integrated wattmeter.
従って太陽電池出力料を最期には償却できるばかりでな
く、日常の電力料金をより安価にできる。Therefore, not only can the solar cell output fee be amortized in the end, but also the daily electricity bill can be made cheaper.
さらに各家庭をはじめ、ビル、工場などの屋根などに設
置するならば発電所が国中に設置されたことになり、昼
間の家庭など電力消費のない所では電力消費しているビ
ル、工場などに供給でき、特に夏期などの電力枯渇期な
どには大きな電力源とすることができる。Furthermore, if power plants are installed on the roofs of each home, building, factory, etc., power plants will be installed all over the country. It can be used as a large power source, especially during periods of power depletion such as summer.
第１図において太陽電池の温度補償をするには例えば基
準電圧源７の基準電圧値を制御して補償すればよい。In FIG. 1, the temperature of the solar cell can be compensated by controlling the reference voltage value of the reference voltage source 7, for example.
さらにまた上記実施例では、太陽電池の出力電圧を該出
力電圧と予め定めた基準電圧との差電圧を検知しこの差
電圧によりインバータの位相を制御する制御装置により
、太陽電池出力電圧を一定にする場合について説明した
が、最適動作電圧の微少な変動をも補償するためには基
準電圧を入射光量、あるいは、太陽電池出力電流によっ
て適正に補正する回路をもうければさらによい結果が期
待できる。Furthermore, in the above embodiment, the output voltage of the solar cell is kept constant by a control device that detects the voltage difference between the output voltage and a predetermined reference voltage and controls the phase of the inverter based on this difference voltage. Although we have described the case where the optimum operating voltage is small, even better results can be expected if a circuit is provided that appropriately corrects the reference voltage depending on the amount of incident light or the output current of the solar cell in order to compensate for even minute fluctuations in the optimum operating voltage.
さらにまた上記実施例ではインバータとして他制他励Ｄ
Ｃ−ＡＣインバータを例に説明したが、周波数をあわせ
る操作が可能であればどのようなりＣ−ＡＣインバータ
であっても同一の効果が得られる。Furthermore, in the above embodiment, the inverter is externally excited D.
Although the description has been given using a C-AC inverter as an example, the same effect can be obtained with any C-AC inverter as long as the frequency can be adjusted.
以上説明したように本発明によれば太陽電池の出力にＤ
Ｃ−ＡＣインバータを接続して負荷に接続し、さらにイ
ンバータ出力に商用電源からの電灯線を並列接続した太
陽電池電力供給装置を得ることができるので、立地問題
なく、発電所を国中に設置が可能で、しかもその装置に
ついて償却が可能であり、電力料金の低価格にも寄与で
きるなどの効果を有、する。As explained above, according to the present invention, the output of the solar cell is
By connecting a C-AC inverter and connecting it to a load, you can also obtain a solar cell power supply system that connects the power lines from a commercial power source in parallel to the inverter output, so power plants can be installed all over the country without location problems. Moreover, the device can be depreciated, and it has the advantage of contributing to lower electricity rates.
第１図は本発明装置の一実施例を説明するための回路構
成図、第２図は第１図の太陽電池の日照量の変化による
電流電圧特性曲線図である。
１・・・・・・太陽電池、２・・・・・・ＤＣ−ＡＣイ
ンバータ、３・・・・・・負荷、４・・・・・・商用電
源、９・・・・・・制御回路。FIG. 1 is a circuit configuration diagram for explaining one embodiment of the device of the present invention, and FIG. 2 is a current-voltage characteristic curve diagram according to changes in the amount of sunlight of the solar cell shown in FIG. 1. 1... Solar cell, 2... DC-AC inverter, 3... Load, 4... Commercial power supply, 9... Control circuit .
Claims (1)
するためのＤＣ−ＡＣインバータと、このインバータの
出力に接続された負荷と、この負荷に対して前記インバ
ータと並列に接続された商用電源と、前記太陽電池出力
電圧の変動を検知して前記太陽電池の出力電圧が負荷の
変動によらずほぼ一定となるように前記インバータの位
相を制御する制御回路とを備えてなる太陽電池電力供給
装置。1. A solar cell, a DC-AC inverter for converting the DC output of this solar cell into alternating current, a load connected to the output of this inverter, and a commercial power source connected to this load in parallel with the inverter. and a control circuit that detects fluctuations in the solar cell output voltage and controls the phase of the inverter so that the output voltage of the solar cell remains approximately constant regardless of load fluctuations. Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP49060744A JPS5840417B2 (en) | 1974-05-31 | 1974-05-31 | solar power supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP49060744A JPS5840417B2 (en) | 1974-05-31 | 1974-05-31 | solar power supply device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS50153886A JPS50153886A (en) | 1975-12-11 |
| JPS5840417B2 true JPS5840417B2 (en) | 1983-09-06 |
Family
ID=13151065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP49060744A Expired JPS5840417B2 (en) | 1974-05-31 | 1974-05-31 | solar power supply device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5840417B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6171219A (en) * | 1984-09-14 | 1986-04-12 | Kinugawa Rubber Ind Co Ltd | Drainage device for car with quick disconnect sun roof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5875479A (en) * | 1981-10-30 | 1983-05-07 | Toshiba Corp | Control system of dc-ac converter |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5124690A (en) * | 1974-08-23 | 1976-02-28 | Teijin Ltd | Horiesuteruno seizoho |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4875113U (en) * | 1971-12-21 | 1973-09-18 |
-
1974
- 1974-05-31 JP JP49060744A patent/JPS5840417B2/en not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5124690A (en) * | 1974-08-23 | 1976-02-28 | Teijin Ltd | Horiesuteruno seizoho |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6171219A (en) * | 1984-09-14 | 1986-04-12 | Kinugawa Rubber Ind Co Ltd | Drainage device for car with quick disconnect sun roof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS50153886A (en) | 1975-12-11 |
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